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Commit 6f26ea81 authored by Rich Prohaska's avatar Rich Prohaska Committed by Yoni Fogel
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refs #5254 merge fast upserts to mainline. enabled on mysql 5.6 only for now. 

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@50363 c7de825b-a66e-492c-adef-691d508d4ae1
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storage/tokudb/Makefile.am deleted 100644 → 0
View file @ 8206e02a
#called from the top level Makefile
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-I$(top_srcdir)/include \
-I$(top_srcdir)/regex \
-I$(top_srcdir)/sql \
-I$(srcdir) \
-I$(TOKUFRACTALTREE)/include
LDADD =
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ha_tokudb_la_LIBADD = -L$(TOKUFRACTALTREE)/lib -l$(TOKUFRACTALTREE_LIBNAME) -l$(TOKUPORTABILITY_LIBNAME) -lz -lstdc++
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ha_tokudb_la_SOURCES = ha_tokudb.cc
EXTRA_LIBRARIES = libtokudb.a
noinst_LIBRARIES = @plugin_tokudb_static_target@
libtokudb_a_CXXFLAGS = $(AM_CXXFLAGS) -Wall
libtokudb_a_SOURCES = ha_tokudb.cc
EXTRA_DIST = CMakeLists.txt plug.in
# Don't update the files from bitkeeper
%::SCCS/s.%
storage/tokudb/Makefile.in deleted 100644 → 0
View file @ 8206e02a
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# Don't update the files from bitkeeper
%::SCCS/s.%
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:
storage/tokudb/Makefile.win deleted 100644 → 0
View file @ 8206e02a
TARGETS= CMakeLists.txt
.DELETE_ON_ERROR:
.PHONY: CMakeLists.txt #It depends on the contents of the TOKUDB_DIR variable, simpler to just make it phony then depend on that.
ifeq ($(TOKUDB_DIR),)
#error
CMakeLists.txt: CMakeLists.in
false #Need to define TOKUDB_DIR
else
CMakeLists.txt: CMakeLists.in
sed -e "s?TOKUDB_DIR_REPLACE_ME?$(TOKUDB_DIR)?g" \
-e "s?TOKUDB_OBJ_DIR_REPLACE_ME?$(TOKUDB_OBJ_DIR)?g" \
-e "s?TOKUDB_VERSION_REPLACE_ME?$(TOKUDB_VERSION)?g" < $< > $@
endif
clean:
rm -f $(TARGETS)
storage/tokudb/ha_tokudb.cc
View file @ 6f26ea81
......@@ -661,15 +661,14 @@ void set_key_filter(MY_BITMAP* key_filter, KEY* key, TABLE* table, bool get_offs
// key is only the first 3 characters, and we end up losing the last 7 bytes of the
// column
//
TOKU_TYPE toku_type;
toku_type = mysql_to_toku_type(field);
switch(toku_type) {
case(toku_type_blob):
TOKU_TYPE toku_type = mysql_to_toku_type(field);
switch (toku_type) {
case toku_type_blob:
break;
case(toku_type_varbinary):
case(toku_type_varstring):
case(toku_type_fixbinary):
case(toku_type_fixstring):
case toku_type_varbinary:
case toku_type_varstring:
case toku_type_fixbinary:
case toku_type_fixstring:
if (key->key_part[curr_key_index].length == field->field_length) {
bitmap_set_bit(key_filter,i);
}
......@@ -3829,7 +3828,7 @@ int ha_tokudb::write_row(uchar * record) {
else {
update_max_auto_inc(share->status_block, share->last_auto_increment);
}
}
}
pthread_mutex_unlock(&share->mutex);
}
......@@ -8017,8 +8016,13 @@ void ha_tokudb::set_dup_value_for_pk(DBT* key) {
// table admin
#include "ha_tokudb_admin.cc"
// alter table code for various mysql distros
// update functions
#include "ha_tokudb_update_fun.cc"
// fast updates
#include "ha_tokudb_update.cc"
// alter table code for various mysql distros
#include "ha_tokudb_alter_51.cc"
#include "ha_tokudb_alter_55.cc"
#include "ha_tokudb_alter_56.cc"
......
storage/tokudb/ha_tokudb.h
View file @ 6f26ea81
......@@ -669,6 +669,18 @@ private:
#if TOKU_INCLUDE_WRITE_FRM_DATA
int write_frm_data(const uchar *frm_data, size_t frm_len);
#endif
#if TOKU_INCLUDE_UPSERT
public:
bool fast_update(THD *thd, List<Item> &fields, List<Item> &values, Item *conds, int *error_ret);
private:
bool check_fast_update(THD *thd, List<Item> &fields, List<Item> &values, Item *conds);
int send_update_message(List<Item> &fields, List<Item> &values, Item *conds, DB_TXN *txn);
public:
bool upsert(THD *thd, uchar *record, List<Item> &update_fields, List<Item> &update_values, int *error_ret);
private:
bool check_upsert(THD *thd, List<Item> &update_fields, List<Item> &update_values);
int send_upsert_message(THD *thd, uchar *record, List<Item> &update_fields, List<Item> &update_values, DB_TXN *txn);
#endif
};
#if MYSQL_VERSION_ID >= 50506
......
storage/tokudb/ha_tokudb_alter_56.cc
View file @ 6f26ea81
......@@ -49,8 +49,7 @@ public:
};
// Debug function to print out an alter table operation
void
ha_tokudb::print_alter_info(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
void ha_tokudb::print_alter_info(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
printf("***are keys of two tables same? %d\n", tables_have_same_keys(table, altered_table, false, false));
if (ha_alter_info->handler_flags) {
printf("***alter flags set ***\n");
......@@ -103,8 +102,7 @@ ha_tokudb::print_alter_info(TABLE *altered_table, Alter_inplace_info *ha_alter_i
// Given two tables with equal number of fields, find all of the fields with different types
// and return the indexes of the different fields in the changed_fields array. This function ignores field
// name differences.
static int
find_changed_fields(TABLE *table_a, TABLE *table_b, Dynamic_array<uint> &changed_fields) {
static int find_changed_fields(TABLE *table_a, TABLE *table_b, Dynamic_array<uint> &changed_fields) {
for (uint i = 0; i < table_a->s->fields; i++) {
Field *field_a = table_a->field[i];
Field *field_b = table_b->field[i];
......@@ -119,8 +117,7 @@ static bool change_length_is_supported(TABLE *table, TABLE *altered_table, Alter
static bool change_type_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx);
// The ha_alter_info->handler_flags can not be trusted. This function maps the bogus handler flags to something we like.
static ulong
fix_handler_flags(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
static ulong fix_handler_flags(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
ulong handler_flags = ha_alter_info->handler_flags;
// workaround for fill_alter_inplace_info bug (#5193)
......@@ -151,8 +148,7 @@ fix_handler_flags(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alt
}
// Require that there is no intersection of add and drop names.
static bool
is_disjoint_add_drop(Alter_inplace_info *ha_alter_info) {
static bool is_disjoint_add_drop(Alter_inplace_info *ha_alter_info) {
for (uint d = 0; d < ha_alter_info->index_drop_count; d++) {
KEY *drop_key = ha_alter_info->index_drop_buffer[d];
for (uint a = 0; a < ha_alter_info->index_add_count; a++) {
......@@ -180,8 +176,7 @@ static bool only_flags(ulong bits, ulong mask) {
// must set WRITE_ALLOW_WRITE lock type in the external lock method to avoid deadlocks
// with the MDL lock and the table lock
// HA_ALTER_INPLACE_EXCLUSIVE_LOCK: the alter operation requires an exclusive MDL no concurrent reads, no writes
enum_alter_inplace_result
ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
enum_alter_inplace_result ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
TOKUDB_DBUG_ENTER("check_if_supported_alter");
if (tokudb_debug & TOKUDB_DEBUG_ALTER_TABLE_INFO) {
......@@ -334,8 +329,7 @@ ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_
}
// Prepare for the alter operations
bool
ha_tokudb::prepare_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
bool ha_tokudb::prepare_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
TOKUDB_DBUG_ENTER("prepare_inplace_alter_table");
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
assert(transaction); // transaction must exist after table is locked
......@@ -345,8 +339,7 @@ ha_tokudb::prepare_inplace_alter_table(TABLE *altered_table, Alter_inplace_info
}
// Execute the alter operations.
bool
ha_tokudb::inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
bool ha_tokudb::inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
TOKUDB_DBUG_ENTER("inplace_alter_table");
int error = 0;
......@@ -398,8 +391,7 @@ ha_tokudb::inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alte
DBUG_RETURN(result);
}
int
ha_tokudb::alter_table_add_index(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int ha_tokudb::alter_table_add_index(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
// sort keys in add index order
KEY *key_info = (KEY*) my_malloc(sizeof (KEY) * ha_alter_info->index_add_count, MYF(MY_WME));
......@@ -446,8 +438,7 @@ static bool find_index_of_key(const char *key_name, KEY *key_info, uint key_coun
return false;
}
int
ha_tokudb::alter_table_drop_index(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int ha_tokudb::alter_table_drop_index(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
KEY *key_info = table->key_info;
// translate key names to indexes into the key_info array
uint index_drop_offsets[ha_alter_info->index_drop_count];
......@@ -471,8 +462,7 @@ ha_tokudb::alter_table_drop_index(TABLE *altered_table, Alter_inplace_info *ha_a
return error;
}
int
ha_tokudb::alter_table_add_or_drop_column(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int ha_tokudb::alter_table_add_or_drop_column(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
int error;
uchar *column_extra = NULL;
......@@ -555,8 +545,7 @@ ha_tokudb::alter_table_add_or_drop_column(TABLE *altered_table, Alter_inplace_in
// Commit or abort the alter operations.
// If commit then write the new frm data to the status using the alter transaction.
// If abort then abort the alter transaction and try to rollback the non-transactional changes.
bool
ha_tokudb::commit_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info, bool commit) {
bool ha_tokudb::commit_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info, bool commit) {
TOKUDB_DBUG_ENTER("commit_inplace_alter_table");
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
......@@ -615,8 +604,7 @@ ha_tokudb::commit_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *
}
// Setup the altered table's key and col info.
int
ha_tokudb::setup_kc_info(TABLE *altered_table, KEY_AND_COL_INFO *altered_kc_info) {
int ha_tokudb::setup_kc_info(TABLE *altered_table, KEY_AND_COL_INFO *altered_kc_info) {
int error = allocate_key_and_col_info(altered_table->s, altered_kc_info);
if (error == 0)
error = initialize_key_and_col_info(altered_table->s, altered_table, altered_kc_info, hidden_primary_key, primary_key);
......@@ -624,8 +612,7 @@ ha_tokudb::setup_kc_info(TABLE *altered_table, KEY_AND_COL_INFO *altered_kc_info
}
// Expand the variable length fields offsets from 1 to 2 bytes.
int
ha_tokudb::alter_table_expand_varchar_offsets(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int ha_tokudb::alter_table_expand_varchar_offsets(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int error = 0;
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
......@@ -677,8 +664,7 @@ ha_tokudb::alter_table_expand_varchar_offsets(TABLE *altered_table, Alter_inplac
}
// Return true if a field is part of a key
static bool
field_in_key(KEY *key, Field *field) {
static bool field_in_key(KEY *key, Field *field) {
for (uint i = 0; i < key->key_parts; i++) {
KEY_PART_INFO *key_part = &key->key_part[i];
if (strcmp(key_part->field->field_name, field->field_name) == 0)
......@@ -688,8 +674,7 @@ field_in_key(KEY *key, Field *field) {
}
// Return true if a field is part of any key
static bool
field_in_key_of_table(TABLE *table, Field *field) {
static bool field_in_key_of_table(TABLE *table, Field *field) {
for (uint i = 0; i < table->s->keys; i++) {
if (field_in_key(&table->key_info[i], field))
return true;
......@@ -698,8 +683,7 @@ field_in_key_of_table(TABLE *table, Field *field) {
}
// Return true if all changed varchar/varbinary field lengths can be changed inplace, otherwise return false
static bool
change_varchar_length_is_supported(Field *old_field, Field *new_field, TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
static bool change_varchar_length_is_supported(Field *old_field, Field *new_field, TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
if (old_field->real_type() != MYSQL_TYPE_VARCHAR ||
new_field->real_type() != MYSQL_TYPE_VARCHAR ||
old_field->binary() != new_field->binary() ||
......@@ -714,8 +698,7 @@ change_varchar_length_is_supported(Field *old_field, Field *new_field, TABLE *ta
}
// Return true if all changed field lengths can be changed inplace, otherwise return false
static bool
change_length_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
static bool change_length_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
if (table->s->fields != altered_table->s->fields)
return false;
if (table->s->null_bytes != altered_table->s->null_bytes)
......@@ -740,8 +723,7 @@ change_length_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_inf
}
// Debug function that ensures that the array is sorted
static bool
is_sorted(Dynamic_array<uint> &a) {
static bool is_sorted(Dynamic_array<uint> &a) {
bool r = true;
if (a.elements() > 0) {
uint lastelement = a.at(0);
......@@ -752,8 +734,7 @@ is_sorted(Dynamic_array<uint> &a) {
return r;
}
int
ha_tokudb::alter_table_expand_columns(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int ha_tokudb::alter_table_expand_columns(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
int error = 0;
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
assert(is_sorted(ctx->changed_fields)); // since we build the changed_fields array in field order, it must be sorted
......@@ -765,9 +746,15 @@ ha_tokudb::alter_table_expand_columns(TABLE *altered_table, Alter_inplace_info *
return error;
}
// Return true if the field is an unsigned int
static bool is_unsigned(Field *f) {
return (f->flags & UNSIGNED_FLAG) != 0;
}
// Return the starting offset in the value for a particular index (selected by idx) of a
// particular field (selected by expand_field_num)
static uint32_t field_offset(uint32_t null_bytes, KEY_AND_COL_INFO *kc_info, int idx, int expand_field_num) {
// TODO: replace this?
static uint32_t alter_table_field_offset(uint32_t null_bytes, KEY_AND_COL_INFO *kc_info, int idx, int expand_field_num) {
uint32_t offset = null_bytes;
for (int i = 0; i < expand_field_num; i++) {
if (bitmap_is_set(&kc_info->key_filters[idx], i)) // skip key fields
......@@ -777,14 +764,8 @@ static uint32_t field_offset(uint32_t null_bytes, KEY_AND_COL_INFO *kc_info, int
return offset;
}
// Return true of the field is an unsigned int
static bool is_unsigned(Field *f) {
return (f->flags & UNSIGNED_FLAG) != 0;
}
// Send an expand message into all clustered indexes including the primary
int
ha_tokudb::alter_table_expand_one_column(TABLE *altered_table, Alter_inplace_info *ha_alter_info, int expand_field_num) {
int ha_tokudb::alter_table_expand_one_column(TABLE *altered_table, Alter_inplace_info *ha_alter_info, int expand_field_num) {
int error = 0;
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
......@@ -830,8 +811,8 @@ ha_tokudb::alter_table_expand_one_column(TABLE *altered_table, Alter_inplace_inf
// for all trees that have values, make an expand update message and broadcast it into the tree
if (i == primary_key || (table_share->key_info[i].flags & HA_CLUSTERING)) {
uint32_t old_offset = field_offset(table_share->null_bytes, ctx->table_kc_info, i, expand_field_num);
uint32_t new_offset = field_offset(table_share->null_bytes, ctx->altered_table_kc_info, i, expand_field_num);
uint32_t old_offset = alter_table_field_offset(table_share->null_bytes, ctx->table_kc_info, i, expand_field_num);
uint32_t new_offset = alter_table_field_offset(table_share->null_bytes, ctx->altered_table_kc_info, i, expand_field_num);
assert(old_offset <= new_offset);
uint32_t old_length = ctx->table_kc_info->field_lengths[expand_field_num];
......@@ -882,9 +863,20 @@ ha_tokudb::alter_table_expand_one_column(TABLE *altered_table, Alter_inplace_inf
return error;
}
// Return true if two fixed length fields can be changed inplace
static bool change_fixed_length_is_supported(TABLE *table, TABLE *altered_table, Field *old_field, Field *new_field, tokudb_alter_ctx *ctx) {
// no change in size is supported
if (old_field->pack_length() == new_field->pack_length())
return true;
// shrink is not supported
if (old_field->pack_length() > new_field->pack_length())
return false;
ctx->expand_fixed_update_needed = true;
return true;
}
// Return true if the MySQL type is an int or unsigned int type
static bool
is_int_type(enum_field_types t) {
static bool is_int_type(enum_field_types t) {
switch (t) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
......@@ -897,22 +889,8 @@ is_int_type(enum_field_types t) {
}
}
// Return true if two fixed length fields can be changed inplace
static bool
change_fixed_length_is_supported(TABLE *table, TABLE *altered_table, Field *old_field, Field *new_field, tokudb_alter_ctx *ctx) {
// no change in size is supported
if (old_field->pack_length() == new_field->pack_length())
return true;
// shrink is not supported
if (old_field->pack_length() > new_field->pack_length())
return false;
ctx->expand_fixed_update_needed = true;
return true;
}
// Return true if two field types can be changed inplace
static bool
change_field_type_is_supported(Field *old_field, Field *new_field, TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
static bool change_field_type_is_supported(Field *old_field, Field *new_field, TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
enum_field_types old_type = old_field->real_type();
enum_field_types new_type = new_field->real_type();
if (is_int_type(old_type)) {
......@@ -951,8 +929,7 @@ change_field_type_is_supported(Field *old_field, Field *new_field, TABLE *table,
}
// Return true if all changed field types can be changed inplace
static bool
change_type_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
static bool change_type_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, tokudb_alter_ctx *ctx) {
if (table->s->null_bytes != altered_table->s->null_bytes)
return false;
if (table->s->fields != altered_table->s->fields)
......@@ -974,8 +951,7 @@ change_type_is_supported(TABLE *table, TABLE *altered_table, Alter_inplace_info
// Allocate and initialize a new descriptor for a dictionary in the altered table identified with idx.
// Return the new descriptor in the row_descriptor DBT.
// Return non-zero on error.
int
ha_tokudb::new_row_descriptor(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, uint32_t idx, DBT *row_descriptor) {
int ha_tokudb::new_row_descriptor(TABLE *table, TABLE *altered_table, Alter_inplace_info *ha_alter_info, uint32_t idx, DBT *row_descriptor) {
int error = 0;
tokudb_alter_ctx *ctx = static_cast<tokudb_alter_ctx *>(ha_alter_info->handler_ctx);
row_descriptor->size = get_max_desc_size(ctx->altered_table_kc_info, altered_table);
......@@ -1006,5 +982,4 @@ ha_tokudb::new_row_descriptor(TABLE *table, TABLE *altered_table, Alter_inplace_
return error;
}
#endif
storage/tokudb/ha_tokudb_update.cc 0 → 100644
View file @ 6f26ea81
#if TOKU_INCLUDE_UPSERT
// Point updates and upserts
//
// Restrictions:
// No triggers
// No binary logging
// Primary key must be defined
// Simple and compound primary key
// Int, char and varchar primary key types
// No updates on fields that are part of any key
// No clustering keys
// Integer and char field updates
// Update expressions:
// x = constant
// x = x+constant
// x = x-constant
// x = if(x=0,0,x-1)
// Session variable enables fast updates and fast upserts
// Session variable disables slow updates and slow upserts
// Bugs:
// Does this work with hot indexing? Probably not.
// Future features:
// Support more primary key types
// Allow statement based binary logging
// Force statement logging for fast updates
// Support clustering keys using broadcast updates
// Support primary key ranges using multicast messages
// Support more complicated update expressions
// Replace field_offset
int tokudb_fast_update_debug = 0;
int tokudb_upsert_debug = 0;
// Debug function to dump an Item
static void dump_item(Item *item) {
fprintf(stderr, "%u", item->type());
switch (item->type()) {
case Item::FUNC_ITEM: {
Item_func *func = static_cast<Item_func*>(item);
uint n = func->argument_count();
Item **arguments = func->arguments();
fprintf(stderr, ":func=%u,%s,%u(", func->functype(), func->func_name(), n);
for (uint i = 0; i < n ; i++) {
dump_item(arguments[i]);
if (i < n-1)
fprintf(stderr,",");
}
fprintf(stderr, ")");
break;
}
case Item::INT_ITEM: {
Item_int *int_item = static_cast<Item_int*>(item);
fprintf(stderr, ":int=%lld", int_item->val_int());
break;
}
case Item::STRING_ITEM: {
Item_string *str_item = static_cast<Item_string*>(item);
fprintf(stderr, ":str=%s", str_item->val_str(NULL)->c_ptr());
break;
}
case Item::FIELD_ITEM: {
Item_field *field_item = static_cast<Item_field*>(item);
fprintf(stderr, ":field=%s.%s.%s", field_item->db_name, field_item->table_name, field_item->field_name);
break;
}
case Item::COND_ITEM: {
Item_cond *cond_item = static_cast<Item_cond*>(item);
fprintf(stderr, ":cond=%s(\n", cond_item->func_name());
List_iterator<Item> li(*cond_item->argument_list());
Item *list_item;
while ((list_item = li++)) {
dump_item(list_item);
fprintf(stderr, "\n");
}
fprintf(stderr, ")\n");
break;
}
default:
break;
}
}
// Debug function to dump an Item list
static void dump_item_list(const char *h, List<Item> &l) {
fprintf(stderr, "%s elements=%u\n", h, l.elements);
List_iterator<Item> li(l);
Item *item;
while ((item = li++) != NULL) {
dump_item(item);
fprintf(stderr, "\n");
}
}
// Find a Field by its Item name
static Field *find_field_by_name(TABLE *table, Item *item) {
if (item->type() != Item::FIELD_ITEM)
return NULL;
Item_field *field_item = static_cast<Item_field*>(item);
#if 0
if (strcmp(table->s->db.str, field_item->db_name) != 0 ||
strcmp(table->s->table_name.str, field_item->table_name) != 0)
return NULL;
// TODO: item->field may be a shortcut instead of this table lookup
Field *found_field = NULL;
for (uint i = 0; i < table->s->fields; i++) {
Field *test_field = table->s->field[i];
if (strcmp(field_item->field_name, test_field->field_name) == 0) {
found_field = test_field;
break;
}
}
return found_field;
#else
return field_item->field;
#endif
}
// Return the starting offset in the value for a particular index (selected by idx) of a
// particular field (selected by expand_field_num).
// This only works for fixed length fields
static uint32_t update_field_offset(uint32_t null_bytes, KEY_AND_COL_INFO *kc_info, int idx, int expand_field_num) {
uint32_t offset = null_bytes;
for (int i = 0; i < expand_field_num; i++) {
if (bitmap_is_set(&kc_info->key_filters[idx], i)) // skip key fields
continue;
offset += kc_info->field_lengths[i];
}
return offset;
}
// Determine if an update operation can be offloaded to the storage engine.
// The update operation consists of a list of update expressions (fields[i] = values[i]), and a list
// of where conditions (conds). The function returns true is the update is handled in the storage engine.
// Otherwise, false is returned.
bool ha_tokudb::fast_update(THD *thd, List<Item> &fields, List<Item> &values, Item *conds, int *error_ret) {
int error = 0;
if (tokudb_fast_update_debug) {
dump_item_list("fields", fields);
dump_item_list("values", values);
if (conds) {
fprintf(stderr, "conds\n"); dump_item(conds); fprintf(stderr, "\n");
}
}
if (fields.elements < 1 || fields.elements != values.elements)
return false; // something is fishy with the parameters
if (thd->is_strict_mode() || !transaction || !check_fast_update(thd, fields, values, conds)) {
error = 1;
} else {
error = send_update_message(fields, values, conds, transaction);
}
if (error == 0) {
error = -1; // success for mysql_update TODO: move this into the mysql code
} else {
if (get_disable_slow_update(thd))
error = HA_ERR_UNSUPPORTED;
else
return false;
print_error(error, MYF(0));
}
*error_ret = error;
return true;
}
// Return true if an expression is a simple int expression or a simple function of +- int expression.
static bool check_int_result(Item *item) {
Item::Type t = item->type();
if (t == Item::INT_ITEM)
return true;
else if (t == Item::FUNC_ITEM) {
Item_func *item_func = static_cast<Item_func*>(item);
if (strcmp(item_func->func_name(), "+") != 0 && strcmp(item_func->func_name(), "-") != 0)
return false;
if (item_func->argument_count() != 1)
return false;
Item **arguments = item_func->arguments();
if (arguments[0]->type() != Item::INT_ITEM)
return false;
return true;
} else
return false;
}
// Return true if an expression looks like field_name op constant.
static bool check_x_op_constant(const char *field_name, Item *item, const char *op, Item **item_constant) {
if (item->type() != Item::FUNC_ITEM)
return false;
Item_func *item_func = static_cast<Item_func*>(item);
if (strcmp(item_func->func_name(), op) != 0)
return false;
Item **arguments = item_func->arguments();
uint n = item_func->argument_count();
if (n != 2)
return false;
if (arguments[0]->type() != Item::FIELD_ITEM)
return false;
Item_field *arg0 = static_cast<Item_field*>(arguments[0]);
if (strcmp(field_name, arg0->field_name) != 0)
return false;
if (!check_int_result(arguments[1]))
return false;
*item_constant = arguments[1];
return true;
}
// Return true if an expression looks like field_name = constant
static bool check_x_equal_0(const char *field_name, Item *item) {
Item *item_constant;
if (!check_x_op_constant(field_name, item, "=", &item_constant))
return false;
if (item_constant->val_int() != 0)
return false;
return true;
}
// Return true if an expression looks like fieldname - 1
static bool check_x_minus_1(const char *field_name, Item *item) {
Item *item_constant;
if (!check_x_op_constant(field_name, item, "-", &item_constant))
return false;
if (item_constant->val_int() != 1)
return false;
return true;
}
// Return true if an expression looks like if(fieldname=0, 0, fieldname-1) and
// the field named by fieldname is an unsigned int.
static bool check_decr_floor_expression(Field *lhs_field, Item *item) {
if (item->type() != Item::FUNC_ITEM)
return false;
Item_func *item_func = static_cast<Item_func*>(item);
Item **arguments = item_func->arguments();
uint n = item_func->argument_count();
if (n != 3)
return false;
if (!check_x_equal_0(lhs_field->field_name, arguments[0]))
return false;
if (arguments[1]->type() != Item::INT_ITEM || arguments[1]->val_int() != 0)
return false;
if (!check_x_minus_1(lhs_field->field_name, arguments[2]))
return false;
if (!(lhs_field->flags & UNSIGNED_FLAG))
return false;
return true;
}
// Check if lhs = rhs expression is simple. Return true if it is.
static bool check_simple_update_expression(Item *lhs_item, Item *rhs_item, TABLE *table) {
Field *lhs_field = find_field_by_name(table, lhs_item);
if (lhs_field == NULL)
return false;
if (!lhs_field->part_of_key.is_clear_all())
return false;
enum_field_types lhs_type = lhs_field->type();
Item::Type rhs_type = rhs_item->type();
switch (lhs_type) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
if (check_int_result(rhs_item))
return true;
Item *item_constant;
if (check_x_op_constant(lhs_field->field_name, rhs_item, "+", &item_constant))
return true;
if (check_x_op_constant(lhs_field->field_name, rhs_item, "-", &item_constant))
return true;
if (check_decr_floor_expression(lhs_field, rhs_item))
return true;
break;
case MYSQL_TYPE_STRING:
if (rhs_type == Item::INT_ITEM || rhs_type == Item::STRING_ITEM)
return true;
break;
default:
break;
}
return false;
}
// Check that all update expressions are simple. Return true if they are.
static bool check_all_update_expressions(List<Item> &fields, List<Item> &values, TABLE *table) {
List_iterator<Item> lhs_i(fields);
List_iterator<Item> rhs_i(values);
while (1) {
Item *lhs_item = lhs_i++;
if (lhs_item == NULL)
break;
Item *rhs_item = rhs_i++;
if (rhs_item == NULL)
assert(0); // can not happen
if (!check_simple_update_expression(lhs_item, rhs_item, table))
return false;
}
return true;
}
#if 0
static bool field_name_in_primary_key(TABLE *table, const char *field_name) {
if (table->s->primary_key >= table->s->keys)
return false;
KEY *key = &table->s->key_info[table->s->primary_key];
if (key->key_parts != 1)
return false;
KEY_PART_INFO *key_part = &key->key_part[0];
if (key->key_length != key_part->store_length)
return false;
if (strcmp(field_name, key_part->field->field_name) != 0)
return false;
return true;
}
#endif
// Check that an expression looks like fieldname = constant, fieldname is part of the
// primary key, and the named field is an int, char or varchar type. Return true if it does.
static bool check_pk_field_equal_constant(Item *item, TABLE *table, MY_BITMAP &pk_fields) {
if (item->type() != Item::FUNC_ITEM)
return false;
Item_func *func = static_cast<Item_func*>(item);
if (strcmp(func->func_name(), "=") != 0)
return false;
uint n = func->argument_count();
if (n != 2)
return false;
Item **arguments = func->arguments();
Field *field = find_field_by_name(table, arguments[0]);
if (field == NULL)
return false;
if (!bitmap_test_and_clear(&pk_fields, field->field_index))
return false;
switch (field->type()) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_VARCHAR:
return arguments[1]->type() == Item::INT_ITEM || arguments[1]->type() == Item::STRING_ITEM;
default:
return false;
}
}
// Check that the where condition covers all of the primary key components with fieldname = constant
// expressions. Return true if it does.
static bool check_point_update(Item *conds, TABLE *table) {
bool result = false;
if (conds == NULL)
return false; // no where condition on the update
if (table->s->primary_key >= table->s->keys)
return false; // no primary key defined
// use a bitmap of the primary key fields to keep track of those fields that are covered
// by the where conditions
MY_BITMAP pk_fields;
if (bitmap_init(&pk_fields, NULL, table->s->fields, FALSE)) // 1 -> failure
return false;
KEY *key = &table->s->key_info[table->s->primary_key];
for (uint i = 0; i < key->key_parts; i++)
bitmap_set_bit(&pk_fields, key->key_part[i].field->field_index);
switch (conds->type()) {
case Item::FUNC_ITEM:
result = check_pk_field_equal_constant(conds, table, pk_fields);
break;
case Item::COND_ITEM: {
Item_cond *cond_item = static_cast<Item_cond*>(conds);
if (strcmp(cond_item->func_name(), "and") != 0)
break;
List_iterator<Item> li(*cond_item->argument_list());
Item *list_item;
result = true;
while (result == true && (list_item = li++)) {
result = check_pk_field_equal_constant(list_item, table, pk_fields);
}
break;
}
default:
break;
}
if (!bitmap_is_clear_all(&pk_fields))
result = false;
bitmap_free(&pk_fields);
return result;
}
// Return true if there are any clustering keys (except the primary).
// Precompute this when the table is opened.
static bool clustering_keys_exist(TABLE *table) {
for (uint i = 0; i < table->s->keys; i++)
if (i != table->s->primary_key && (table->s->key_info[i].flags & HA_CLUSTERING))
return true;
return false;
}
#include <binlog.h>
// Check if an update operation can be handled by this storage engine. Return true if it can.
bool ha_tokudb::check_fast_update(THD *thd, List<Item> &fields, List<Item> &values, Item *conds) {
// no triggers
if (table->triggers)
return false;
// no binlog
if (mysql_bin_log.is_open())
return false;
// no clustering keys (need to broadcast an increment into the clustering keys since we are selecting with the primary key)
if (clustering_keys_exist(table))
return false;
// fast updates enabled with session variable
if (!get_enable_fast_update(thd))
return false;
if (!check_all_update_expressions(fields, values, table))
return false;
if (!check_point_update(conds, table))
return false;
return true;
}
// Marshall a simple row descriptor to a buffer.
static void marshall_simple_descriptor(tokudb::buffer &b, TABLE *table, KEY_AND_COL_INFO &kc_info, uint key_num) {
Simple_row_descriptor sd;
sd.m_fixed_field_offset = table->s->null_bytes;
sd.m_var_field_offset = sd.m_fixed_field_offset + kc_info.mcp_info[key_num].fixed_field_size;
sd.m_var_offset_bytes = kc_info.mcp_info[key_num].len_of_offsets;
sd.m_num_var_fields = sd.m_var_offset_bytes == 0 ? 0 : kc_info.mcp_info[key_num].len_of_offsets / sd.m_var_offset_bytes;
sd.append(b);
}
static inline uint32_t get_null_bit_position(uint32_t null_bit);
// Marshall update operatins to a buffer.
static void marshall_simple_update(tokudb::buffer &b, Item *lhs_item, Item *rhs_item, TABLE *table, TOKUDB_SHARE *share) {
// figure out the update operation type (again)
Field *lhs_field = find_field_by_name(table, lhs_item);
assert(lhs_field); // we found it before, so this should work
// compute the update info
uint32_t field_type;
uint32_t field_num = lhs_field->field_index;
uint32_t field_null_num = 0;
if (lhs_field->real_maybe_null())
field_null_num = (1<<31) + (field_num/8)*8 + get_null_bit_position(lhs_field->null_bit);
uint32_t offset = update_field_offset(table->s->null_bytes, &share->kc_info, table->s->primary_key, lhs_field->field_index);
void *v_ptr = NULL;
uint32_t v_length;
uint32_t update_operation;
longlong v_ll;
String v_str;
switch (lhs_field->type()) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG: {
Field_num *lhs_num = static_cast<Field_num*>(lhs_field);
field_type = lhs_num->unsigned_flag ? UPDATE_TYPE_UINT : UPDATE_TYPE_INT;
switch (rhs_item->type()) {
case Item::INT_ITEM: {
update_operation = '=';
v_ll = rhs_item->val_int();
v_length = lhs_field->pack_length();
v_ptr = &v_ll;
break;
}
case Item::FUNC_ITEM: {
Item_func *rhs_func = static_cast<Item_func*>(rhs_item);
Item **arguments = rhs_func->arguments();
if (strcmp(rhs_func->func_name(), "if") == 0) {
update_operation = '-'; // we only support one if function for now, and it is a descrement with floor.
v_ll = 1;
} else if (rhs_func->argument_count() == 1) {
update_operation = '=';
v_ll = rhs_func->val_int();
} else {
update_operation = rhs_func->func_name()[0];
v_ll = arguments[1]->val_int();
}
v_length = lhs_field->pack_length();
v_ptr = &v_ll;
break;
}
default:
assert(0);
}
break;
}
case MYSQL_TYPE_STRING: {
update_operation = '=';
field_type = lhs_field->binary() ? UPDATE_TYPE_BINARY : UPDATE_TYPE_CHAR;
v_str = *rhs_item->val_str(&v_str);
v_length = v_str.length();
if (v_length >= lhs_field->pack_length()) {
v_length = lhs_field->pack_length();
v_str.length(v_length); // truncate
} else {
v_length = lhs_field->pack_length();
uchar pad_char = lhs_field->binary() ? 0 : lhs_field->charset()->pad_char;
v_str.fill(lhs_field->pack_length(), pad_char); // pad
}
v_ptr = v_str.c_ptr();
break;
}
default:
assert(0);
}
// marshall the update fields into the buffer
b.append(&update_operation, sizeof update_operation);
b.append(&field_type, sizeof field_type);
b.append(&field_num, sizeof field_num);
b.append(&field_null_num, sizeof field_null_num);
b.append(&offset, sizeof offset);
b.append(&v_length, sizeof v_length);
b.append(v_ptr, v_length);
}
// Save an item's value into the appropriate field. Return 0 if successful.
static int save_in_field(Item *item, TABLE *table) {
assert(item->type() == Item::FUNC_ITEM);
Item_func *func = static_cast<Item_func*>(item);
assert(strcmp(func->func_name(), "=") == 0);
uint n = func->argument_count();
assert(n == 2);
Item **arguments = func->arguments();
assert(arguments[0]->type() == Item::FIELD_ITEM);
Item_field *field_item = static_cast<Item_field*>(arguments[0]);
my_bitmap_map *old_map = dbug_tmp_use_all_columns(table, table->write_set);
int error = arguments[1]->save_in_field(field_item->field, 0);
dbug_tmp_restore_column_map(table->write_set, old_map);
return error;
}
// Generate an update message for an update operation and send it into the primary tree. Return 0 if successful.
int ha_tokudb::send_update_message(List<Item> &fields, List<Item> &values, Item *conds, DB_TXN *txn) {
int error;
// Save the primary key from the where conditions
Item::Type t = conds->type();
if (t == Item::FUNC_ITEM) {
error = save_in_field(conds, table);
} else if (t == Item::COND_ITEM) {
Item_cond *cond_item = static_cast<Item_cond*>(conds);
List_iterator<Item> li(*cond_item->argument_list());
Item *list_item;
for (error = 0; error == 0 && (list_item = li++); ) {
error = save_in_field(list_item, table);
}
} else
assert(0);
if (error)
return error;
// put the primary key into key_buff and wrap it with key_dbt
DBT key_dbt;
bool has_null;
create_dbt_key_from_table(&key_dbt, primary_key, key_buff, table->record[0], &has_null);
// construct the update message
tokudb::buffer update_message;
uchar operation = UPDATE_OP_SIMPLE_UPDATE;
update_message.append(&operation, sizeof operation);
uint32_t update_mode = 0;
update_message.append(&update_mode, sizeof update_mode);
// append the descriptor
marshall_simple_descriptor(update_message, table, share->kc_info, primary_key);
// append the updates
List_iterator<Item> lhs_i(fields);
List_iterator<Item> rhs_i(values);
while (error == 0) {
Item *lhs_item = lhs_i++;
if (lhs_item == NULL)
break;
Item *rhs_item = rhs_i++;
if (rhs_item == NULL)
assert(0); // can not happen
marshall_simple_update(update_message, lhs_item, rhs_item, table, share);
}
// send the message
DBT update_dbt; memset(&update_dbt, 0, sizeof update_dbt);
update_dbt.data = update_message.data();
update_dbt.size = update_message.size();
error = share->key_file[primary_key]->update(share->key_file[primary_key], txn, &key_dbt, &update_dbt, 0);
return error;
}
// Determine if an upsert operation can be offloaded to the storage engine.
// An upsert consists of a row and a list of update expressions (update_fields[i] = update_values[i]).
// The function returns true is the upsert is handled in the storage engine. Otherwise, false is returned.
bool ha_tokudb::upsert(THD *thd, uchar *record, List<Item> &update_fields, List<Item> &update_values, int *error_ret) {
int error = 0;
if (tokudb_upsert_debug) {
fprintf(stderr, "upsert\n");
dump_item_list("update_fields", update_fields);
dump_item_list("update_values", update_values);
}
if (update_fields.elements < 1 || update_fields.elements != update_values.elements)
return false; // not an upsert or something is fishy with the parameters
if (thd->is_strict_mode() || !transaction || !check_upsert(thd, update_fields, update_values)) {
if (get_disable_slow_upsert(thd))
error = HA_ERR_UNSUPPORTED;
else
return false;
}
if (error == 0)
error = send_upsert_message(thd, record, update_fields, update_values, transaction);
if (error != 0)
print_error(error, MYF(0));
*error_ret = error;
return true;
}
// Check if an upsert can be handled by this storage engine. Return trus if it can.
bool ha_tokudb::check_upsert(THD *thd, List<Item> &update_fields, List<Item> &update_values) {
// no triggers
if (table->triggers)
return false;
// no binlog
if (mysql_bin_log.is_open())
return false;
// primary key must exist
// no auto increment?
if (table->s->primary_key >= table->s->keys)
return false;
// no clustering keys (need to broadcast an increment into the clustering keys since we are selecting with the primary key)
if (clustering_keys_exist(table))
return false;
if (!get_enable_fast_upsert(thd))
return false;
if (!check_all_update_expressions(update_fields, update_values, table))
return false;
return true;
}
// Generate an upsert message and send it into the primary tree. Return 0 if successful.
int ha_tokudb::send_upsert_message(THD *thd, uchar *record, List<Item> &update_fields, List<Item> &update_values, DB_TXN *txn) {
int error = 0;
// generate primary key
DBT key_dbt;
bool has_null;
create_dbt_key_from_table(&key_dbt, primary_key, primary_key_buff, record, &has_null);
// generate packed row
DBT row;
error = pack_row(&row, (const uchar *) record, primary_key);
if (error)
return error;
tokudb::buffer update_message;
// append the operation
uchar operation = UPDATE_OP_SIMPLE_UPSERT;
update_message.append(&operation, sizeof operation);
uint32_t update_mode = 0;
update_message.append(&update_mode, sizeof update_mode);
// append the row
uint32_t row_length = row.size;
update_message.append(&row_length, sizeof row_length);
update_message.append(row.data, row_length);
// append the descriptor
marshall_simple_descriptor(update_message, table, share->kc_info, primary_key);
// append the update expressions
List_iterator<Item> lhs_i(update_fields);
List_iterator<Item> rhs_i(update_values);
while (1) {
Item *lhs_item = lhs_i++;
if (lhs_item == NULL)
break;
Item *rhs_item = rhs_i++;
if (rhs_item == NULL)
assert(0); // can not happen
marshall_simple_update(update_message, lhs_item, rhs_item, table, share);
}
// send the upsert message
DBT update_dbt; memset(&update_dbt, 0, sizeof update_dbt);
update_dbt.data = update_message.data();
update_dbt.size = update_message.size();
error = share->key_file[primary_key]->update(share->key_file[primary_key], txn, &key_dbt, &update_dbt, 0);
return error;
}
#endif
storage/tokudb/ha_tokudb_update_fun.cc
View file @ 6f26ea81
......@@ -4,13 +4,28 @@
// is expanded beyond 1 byte.
enum {
UPDATE_OP_COL_ADD_OR_DROP = 0,
UPDATE_OP_EXPAND_VARIABLE_OFFSETS = 1,
UPDATE_OP_EXPAND_INT = 2,
UPDATE_OP_EXPAND_UINT = 3,
UPDATE_OP_EXPAND_CHAR = 4,
UPDATE_OP_EXPAND_BINARY = 5,
UPDATE_OP_SIMPLE_UPDATE = 10,
UPDATE_OP_SIMPLE_UPSERT = 11,
};
// Field types used in the update messages
enum {
UPDATE_TYPE_UNKNOWN = 0,
UPDATE_TYPE_INT = 1,
UPDATE_TYPE_UINT = 2,
UPDATE_TYPE_CHAR = 3,
UPDATE_TYPE_BINARY = 4,
UPDATE_TYPE_VARCHAR = 5,
UPDATE_TYPE_VARBINARY = 6,
};
#define UP_COL_ADD_OR_DROP UPDATE_OP_COL_ADD_OR_DROP
// add or drop column sub-operations
......@@ -61,34 +76,68 @@ enum {
// So, upperbound is num_blobs(1+4+1+4) = num_columns*10
// The expand varchar offsets message is used to expand the size of an offset from 1 to 2 bytes.
// operation 1 == UPDATE_OP_EXPAND_VARIABLE_OFFSETS
// n_offsets 4 number of offsets
// offset_start 4 starting offset of the variable length field offsets
// operation 1 == UPDATE_OP_EXPAND_VARIABLE_OFFSETS
// n_offsets 4 number of offsets
// offset_start 4 starting offset of the variable length field offsets
// These expand messages are used to expand the size of a fixed length field.
// The field type is encoded in the operation code.
// operation 1 == UPDATE_OP_EXPAND_INT, UPDATE_OP_EXPAND_UINT, UPDATE_OP_EXPAND_CHAR, UPDATE_OP_EXPAND_BINARY
// offset 4 starting offset of the field in the row's value
// old length 4 the old length of the field's value
// new length 4 the new length of the field's value
// operation 1 == UPDATE_OP_EXPAND_CHAR, UPDATE_OP_EXPAND_BINARY
// offset 4 starting offset of the field in the row's value
// old length 4 the old length of the field's value
// new length 4 the new length of the field's value
// pad char 1
// The int add and sub update messages are used to add or subtract a constant to or from an integer field.
// operation 1 == UPDATE_OP_INT_ADD, UPDATE_OP_INT_SUB, UPDATE_OP_UINT_ADD, UPDATE_OP_UINT_SUB
// offset 4 starting offset of the int type field
// length 4 length of the int type field
// value 4 value to add or subtract (common use case is increment or decrement by 1)
// operation 1 == UPDATE_OP_EXPAND_INT/UINT/CHAR/BINARY
// offset 4 offset of the field
// old length 4 the old length of the field's value
// new length 4 the new length of the field's value
// operation 1 == UPDATE_OP_EXPAND_CHAR/BINARY
// offset 4 offset of the field
// old length 4 the old length of the field's value
// new length 4 the new length of the field's value
// pad char 1
// Simple row descriptor:
// fixed field offset 4
// var field offset 4
// var_offset_bytes 1
// num_var_fields 4
// Field descriptor:
// field type 4
// field num 4
// field null num 4
// field offset 4
// field length 4
// Simple update operation:
// update operation 4 == { '=', '+', '-' }
// x = k
// x = x + k
// x = x - k
// field descriptor
// optional value:
// value length 4 == N, length of the value
// value N value to add or subtract
// Simple update message:
// Operation 1 == UPDATE_OP_UPDATE_FIELD
// Update mode 4
// Simple row descriptor
// Simple update ops []
// Simple upsert message:
// Operation 1 == UPDATE_OP_UPSERT
// Update mode 4
// Insert row:
// length 4 == N
// data N
// Simple row descriptor
// Simple update ops []
#include "tokudb_buffer.h"
#include "tokudb_math.h"
//
// checks whether the bit at index pos in data is set or not
//
static inline bool
is_overall_null_position_set(uchar* data, uint32_t pos) {
static inline bool is_overall_null_position_set(uchar* data, uint32_t pos) {
uint32_t offset = pos/8;
uchar remainder = pos%8;
uchar null_bit = 1<<remainder;
......@@ -98,8 +147,7 @@ is_overall_null_position_set(uchar* data, uint32_t pos) {
//
// sets the bit at index pos in data to 1 if is_null, 0 otherwise
//
static inline void
set_overall_null_position(uchar* data, uint32_t pos, bool is_null) {
static inline void set_overall_null_position(uchar* data, uint32_t pos, bool is_null) {
uint32_t offset = pos/8;
uchar remainder = pos%8;
uchar null_bit = 1<<remainder;
......@@ -111,8 +159,7 @@ set_overall_null_position(uchar* data, uint32_t pos, bool is_null) {
}
}
static inline void
copy_null_bits(
static inline void copy_null_bits(
uint32_t start_old_pos,
uint32_t start_new_pos,
uint32_t num_bits,
......@@ -133,8 +180,7 @@ copy_null_bits(
}
}
static inline void
copy_var_fields(
static inline void copy_var_fields(
uint32_t start_old_num_var_field, //index of var fields that we should start writing
uint32_t num_var_fields, // number of var fields to copy
uchar* old_var_field_offset_ptr, //static ptr to where offset bytes begin in old row
......@@ -179,8 +225,7 @@ copy_var_fields(
*num_offset_bytes_written = (uint32_t)(curr_new_var_field_offset_ptr - start_new_var_field_offset_ptr);
}
static inline uint32_t
copy_toku_blob(uchar* to_ptr, uchar* from_ptr, uint32_t len_bytes, bool skip) {
static inline uint32_t copy_toku_blob(uchar* to_ptr, uchar* from_ptr, uint32_t len_bytes, bool skip) {
uint32_t length = 0;
if (!skip) {
memcpy(to_ptr, from_ptr, len_bytes);
......@@ -192,8 +237,7 @@ copy_toku_blob(uchar* to_ptr, uchar* from_ptr, uint32_t len_bytes, bool skip) {
return (length + len_bytes);
}
static int
tokudb_hcad_update_fun(
static int tokudb_hcad_update_fun(
DB* db,
const DBT *key,
const DBT *old_val,
......@@ -624,8 +668,7 @@ cleanup:
}
// Expand the variable offset array in the old row given the update mesage in the extra.
static int
tokudb_expand_variable_offsets(
static int tokudb_expand_variable_offsets(
DB* db,
const DBT *key,
const DBT *old_val,
......@@ -635,24 +678,22 @@ tokudb_expand_variable_offsets(
)
{
int error = 0;
uchar *extra_pos = (uchar *)extra->data;
tokudb::buffer extra_val(extra->data, 0, extra->size);
// decode the operation
uchar operation = extra_pos[0];
uchar operation;
extra_val.consume(&operation, sizeof operation);
assert(operation == UPDATE_OP_EXPAND_VARIABLE_OFFSETS);
extra_pos += sizeof operation;
// decode number of offsets
uint32_t number_of_offsets;
memcpy(&number_of_offsets, extra_pos, sizeof number_of_offsets);
extra_pos += sizeof number_of_offsets;
extra_val.consume(&number_of_offsets, sizeof number_of_offsets);
// decode the offset start
uint32_t offset_start;
memcpy(&offset_start, extra_pos, sizeof offset_start);
extra_pos += sizeof offset_start;
extra_val.consume(&offset_start, sizeof offset_start);
assert(extra_pos == (uchar *)extra->data + extra->size);
assert(extra_val.size() == extra_val.limit());
DBT new_val; memset(&new_val, 0, sizeof new_val);
......@@ -706,8 +747,7 @@ cleanup:
}
// Expand an int field in a old row given the expand message in the extra.
static int
tokudb_expand_int_field(
static int tokudb_expand_int_field(
DB* db,
const DBT *key,
const DBT *old_val,
......@@ -717,25 +757,19 @@ tokudb_expand_int_field(
)
{
int error = 0;
uchar *extra_pos = (uchar *)extra->data;
tokudb::buffer extra_val(extra->data, 0, extra->size);
uchar operation = extra_pos[0];
uchar operation;
extra_val.consume(&operation, sizeof operation);
assert(operation == UPDATE_OP_EXPAND_INT || operation == UPDATE_OP_EXPAND_UINT);
extra_pos += sizeof operation;
uint32_t the_offset;
memcpy(&the_offset, extra_pos, sizeof the_offset);
extra_pos += sizeof the_offset;
extra_val.consume(&the_offset, sizeof the_offset);
uint32_t old_length;
memcpy(&old_length, extra_pos, sizeof old_length);
extra_pos += sizeof old_length;
extra_val.consume(&old_length, sizeof old_length);
uint32_t new_length;
memcpy(&new_length, extra_pos, sizeof new_length);
extra_pos += sizeof new_length;
extra_val.consume(&new_length, sizeof new_length);
assert(extra_val.size() == extra_val.limit());
assert(extra_pos == (uchar *)extra->data + extra->size); // consumed the entire message
assert(new_length >= old_length); // expand only
DBT new_val; memset(&new_val, 0, sizeof new_val);
......@@ -801,8 +835,7 @@ cleanup:
}
// Expand a char field in a old row given the expand message in the extra.
static int
tokudb_expand_char_field(
static int tokudb_expand_char_field(
DB* db,
const DBT *key,
const DBT *old_val,
......@@ -812,29 +845,21 @@ tokudb_expand_char_field(
)
{
int error = 0;
uchar *extra_pos = (uchar *)extra->data;
tokudb::buffer extra_val(extra->data, 0, extra->size);
uchar operation = extra_pos[0];
uchar operation;
extra_val.consume(&operation, sizeof operation);
assert(operation == UPDATE_OP_EXPAND_CHAR || operation == UPDATE_OP_EXPAND_BINARY);
extra_pos += sizeof operation;
uint32_t the_offset;
memcpy(&the_offset, extra_pos, sizeof the_offset);
extra_pos += sizeof the_offset;
extra_val.consume(&the_offset, sizeof the_offset);
uint32_t old_length;
memcpy(&old_length, extra_pos, sizeof old_length);
extra_pos += sizeof old_length;
extra_val.consume(&old_length, sizeof old_length);
uint32_t new_length;
memcpy(&new_length, extra_pos, sizeof new_length);
extra_pos += sizeof new_length;
uchar pad_char = 0;
memcpy(&pad_char, extra_pos, sizeof pad_char);
extra_pos += sizeof pad_char;
extra_val.consume(&new_length, sizeof new_length);
uchar pad_char;
extra_val.consume(&pad_char, sizeof pad_char);
assert(extra_val.size() == extra_val.limit());
assert(extra_pos == (uchar *)extra->data + extra->size); // consumed the entire message
assert(new_length >= old_length); // expand only
DBT new_val; memset(&new_val, 0, sizeof new_val);
......@@ -892,8 +917,290 @@ cleanup:
return error;
}
int
tokudb_update_fun(
class Simple_row_descriptor {
public:
Simple_row_descriptor() : m_fixed_field_offset(0), m_var_field_offset(0), m_var_offset_bytes(0), m_num_var_fields(0) {
}
~Simple_row_descriptor() {
}
void consume(tokudb::buffer &b) {
b.consume(&m_fixed_field_offset, sizeof m_fixed_field_offset);
b.consume(&m_var_field_offset, sizeof m_var_field_offset);
b.consume(&m_var_offset_bytes, sizeof m_var_offset_bytes);
b.consume(&m_num_var_fields, sizeof m_num_var_fields);
}
void append(tokudb::buffer &b) {
b.append(&m_fixed_field_offset, sizeof m_fixed_field_offset);
b.append(&m_var_field_offset, sizeof m_var_field_offset);
b.append(&m_var_offset_bytes, sizeof m_var_offset_bytes);
b.append(&m_num_var_fields, sizeof m_num_var_fields);
}
public:
uint32_t m_fixed_field_offset;
uint32_t m_var_field_offset;
uint8_t m_var_offset_bytes;
uint32_t m_num_var_fields;
};
// Update a fixed field: new_val@offset = extra_val
static void set_fixed_field(uint32_t the_offset, uint32_t length, uint32_t field_num, uint32_t field_null_num,
tokudb::buffer &new_val, void *extra_val) {
assert(the_offset + length <= new_val.size());
new_val.replace(the_offset, length, extra_val, length);
if (field_null_num)
set_overall_null_position((uchar *) new_val.data(), field_null_num & ~(1<<31), false);
}
// Update an int field: signed newval@offset = old_val@offset OP extra_val
static void int_op(uint32_t operation, uint32_t update_mode, uint32_t the_offset, uint32_t length, uint32_t field_num, uint32_t field_null_num,
tokudb::buffer &new_val, tokudb::buffer &old_val, void *extra_val) {
assert(the_offset + length <= new_val.size());
assert(the_offset + length <= old_val.size());
assert(length == 1 || length == 2 || length == 3 || length == 4 || length == 8);
assert(update_mode == 0);
uchar *old_val_ptr = (uchar *) old_val.data();
bool field_is_null = false;
if (field_null_num)
field_is_null = is_overall_null_position_set(old_val_ptr, field_null_num & ~(1<<31));
int64_t v = 0;
memcpy(&v, old_val_ptr + the_offset, length);
v = tokudb::int_sign_extend(v, 8*length);
int64_t extra_v = 0;
memcpy(&extra_v, extra_val, length);
extra_v = tokudb::int_sign_extend(extra_v, 8*length);
switch (operation) {
case '+':
if (!field_is_null) {
bool over;
v = tokudb::int_add(v, extra_v, 8*length, over);
if (over) {
if (extra_v > 0)
v = tokudb::int_high_endpoint(8*length);
else
v = tokudb::int_low_endpoint(8*length);
over = false;
}
if (!over)
new_val.replace(the_offset, length, &v, length);
}
break;
case '-':
if (!field_is_null) {
bool over;
v = tokudb::int_sub(v, extra_v, 8*length, over);
if (over) {
if (extra_v > 0)
v = tokudb::int_low_endpoint(8*length);
else
v = tokudb::int_high_endpoint(8*length);
over = false;
}
if (!over)
new_val.replace(the_offset, length, &v, length);
}
break;
default:
assert(0);
}
}
// Update an unsigned field: unsigned newval@offset = old_val@offset OP extra_val
static void uint_op(uint32_t operation, uint32_t update_mode, uint32_t the_offset, uint32_t length, uint32_t field_num, uint32_t field_null_num,
tokudb::buffer &new_val, tokudb::buffer &old_val, void *extra_val) {
assert(the_offset + length <= new_val.size());
assert(the_offset + length <= old_val.size());
assert(length == 1 || length == 2 || length == 3 || length == 4 || length == 8);
assert(update_mode == 0);
uchar *old_val_ptr = (uchar *) old_val.data();
bool field_is_null = false;
if (field_null_num)
field_is_null = is_overall_null_position_set(old_val_ptr, field_null_num & ~(1<<31));
uint64_t v = 0;
memcpy(&v, old_val_ptr + the_offset, length);
uint64_t extra_v = 0;
memcpy(&extra_v, extra_val, length);
switch (operation) {
case '+':
if (!field_is_null) {
bool over;
v = tokudb::uint_add(v, extra_v, 8*length, over);
if (over) {
v = tokudb::uint_high_endpoint(8*length);
over = false;
}
if (!over)
new_val.replace(the_offset, length, &v, length);
}
break;
case '-':
if (!field_is_null) {
bool over;
v = tokudb::uint_sub(v, extra_v, 8*length, over);
if (over) {
v = tokudb::uint_low_endpoint(8*length);
over = false;
}
if (!over)
new_val.replace(the_offset, length, &v, length);
}
break;
default:
assert(0);
}
}
// Decode and apply a sequence of update operations defined in the extra to the old value and put the result
// in the new value.
static void apply_updates(tokudb::buffer &new_val, tokudb::buffer &old_val, tokudb::buffer &extra_val,
uint32_t update_mode, Simple_row_descriptor &sd) {
while (extra_val.size() < extra_val.limit()) {
// get the update operation
uint32_t update_operation;
extra_val.consume(&update_operation, sizeof update_operation);
uint32_t field_type;
extra_val.consume(&field_type, sizeof field_type);
uint32_t field_num;
extra_val.consume(&field_num, sizeof field_num);
uint32_t field_null_num;
extra_val.consume(&field_null_num, sizeof field_null_num);
uint32_t the_offset;
extra_val.consume(&the_offset, sizeof the_offset);
uint32_t length;
extra_val.consume(&length, sizeof length);
void *extra_val_ptr = extra_val.consume_ptr(length);
// apply the update
switch (field_type) {
case UPDATE_TYPE_INT:
if (update_operation == '=')
set_fixed_field(the_offset, length, field_num, field_null_num, new_val, extra_val_ptr);
else
int_op(update_operation, update_mode, the_offset, length, field_num, field_null_num, new_val, old_val, extra_val_ptr);
break;
case UPDATE_TYPE_UINT:
if (update_operation == '=')
set_fixed_field(the_offset, length, field_num, field_null_num, new_val, extra_val_ptr);
else
uint_op(update_operation, update_mode, the_offset, length, field_num, field_null_num, new_val, old_val, extra_val_ptr);
break;
case UPDATE_TYPE_CHAR:
case UPDATE_TYPE_BINARY:
if (update_operation == '=')
set_fixed_field(the_offset, length, field_num, field_null_num, new_val, extra_val_ptr);
else
assert(0);
break;
default:
assert(0);
break;
}
}
}
// Simple update handler. Decode the update message, apply the update operations to the old value, and set
// the new value.
static int tokudb_simple_update_fun(
DB* db,
const DBT *key_dbt,
const DBT *old_val_dbt,
const DBT *extra,
void (*set_val)(const DBT *new_val_dbt, void *set_extra),
void *set_extra
)
{
tokudb::buffer extra_val(extra->data, 0, extra->size);
uchar operation;
extra_val.consume(&operation, sizeof operation);
assert(operation == UPDATE_OP_SIMPLE_UPDATE);
uint32_t update_mode;
extra_val.consume(&update_mode, sizeof update_mode);
if (old_val_dbt != NULL) {
// get the simple descriptor
Simple_row_descriptor sd;
sd.consume(extra_val);
tokudb::buffer old_val(old_val_dbt->data, old_val_dbt->size, old_val_dbt->size);
// new val = old val
tokudb::buffer new_val;
new_val.append(old_val_dbt->data, old_val_dbt->size);
// apply updates to new val
apply_updates(new_val, old_val, extra_val, update_mode, sd);
// set the new val
DBT new_val_dbt; memset(&new_val_dbt, 0, sizeof new_val_dbt);
new_val_dbt.data = new_val.data();
new_val_dbt.size = new_val.size();
set_val(&new_val_dbt, set_extra);
}
return 0;
}
// Simple upsert handler. Decode the upsert message. If the key does not exist, then insert a new value from the extra.
// Otherwise, apply the update operations to the old value, and then set the new value.
static int tokudb_simple_upsert_fun(
DB* db,
const DBT *key_dbt,
const DBT *old_val_dbt,
const DBT *extra,
void (*set_val)(const DBT *new_val_dbt, void *set_extra),
void *set_extra
)
{
tokudb::buffer extra_val(extra->data, 0, extra->size);
uchar operation;
extra_val.consume(&operation, sizeof operation);
assert(operation == UPDATE_OP_SIMPLE_UPSERT);
uint32_t update_mode;
extra_val.consume(&update_mode, sizeof update_mode);
uint32_t insert_length;
extra_val.consume(&insert_length, sizeof insert_length);
void *insert_row = extra_val.consume_ptr(insert_length);
if (old_val_dbt == NULL) {
// insert a new row
DBT new_val_dbt; memset(&new_val_dbt, 0, sizeof new_val_dbt);
new_val_dbt.size = insert_length;
new_val_dbt.data = insert_row;
set_val(&new_val_dbt, set_extra);
} else {
// decode the simple descriptor
Simple_row_descriptor sd;
sd.consume(extra_val);
tokudb::buffer old_val(old_val_dbt->data, old_val_dbt->size, old_val_dbt->size);
// new val = old val
tokudb::buffer new_val;
new_val.append(old_val_dbt->data, old_val_dbt->size);
// apply updates to new val
apply_updates(new_val, old_val, extra_val, update_mode, sd);
// set the new val
DBT new_val_dbt; memset(&new_val_dbt, 0, sizeof new_val_dbt);
new_val_dbt.data = new_val.data();
new_val_dbt.size = new_val.size();
set_val(&new_val_dbt, set_extra);
}
return 0;
}
// This function is the update callback function that is registered with the YDB environment.
// It uses the first byte in the update message to identify the update message type and call
// the handler for that message.
int tokudb_update_fun(
DB* db,
const DBT *key,
const DBT *old_val,
......@@ -904,7 +1211,7 @@ tokudb_update_fun(
{
uchar *extra_pos = (uchar *)extra->data;
uchar operation = extra_pos[0];
int error = 0;
int error;
switch (operation) {
case UPDATE_OP_COL_ADD_OR_DROP:
error = tokudb_hcad_update_fun(db, key, old_val, extra, set_val, set_extra);
......@@ -920,6 +1227,12 @@ tokudb_update_fun(
case UPDATE_OP_EXPAND_BINARY:
error = tokudb_expand_char_field(db, key, old_val, extra, set_val, set_extra);
break;
case UPDATE_OP_SIMPLE_UPDATE:
error = tokudb_simple_update_fun(db, key, old_val, extra, set_val, set_extra);
break;
case UPDATE_OP_SIMPLE_UPSERT:
error = tokudb_simple_upsert_fun(db, key, old_val, extra, set_val, set_extra);
break;
default:
error = EINVAL;
break;
......
storage/tokudb/hatoku_defines.h
View file @ 6f26ea81
......@@ -43,6 +43,7 @@
#define TOKU_INCLUDE_XA 1
#define TOKU_PARTITION_WRITE_FRM_DATA 1
#define TOKU_INCLUDE_WRITE_FRM_DATA 1
#define TOKU_INCLUDE_UPSERT 1
#elif 50500 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 50599
#define TOKU_INCLUDE_ALTER_56 1
......
storage/tokudb/hatoku_hton.cc
View file @ 6f26ea81
......@@ -139,6 +139,36 @@ static MYSQL_THDVAR_UINT(read_buf_size,
1*1024*1024, // max
1 // blocksize???
);
#if TOKU_INCLUDE_UPSERT
static MYSQL_THDVAR_BOOL(enable_fast_update,
PLUGIN_VAR_THDLOCAL,
"enable fast update",
NULL, // check
NULL, // update
false // default
);
static MYSQL_THDVAR_BOOL(disable_slow_update,
PLUGIN_VAR_THDLOCAL,
"disable slow update",
NULL, // check
NULL, // update
false // default
);
static MYSQL_THDVAR_BOOL(enable_fast_upsert,
PLUGIN_VAR_THDLOCAL,
"enable fast upsert",
NULL, // check
NULL, // update
false // default
);
static MYSQL_THDVAR_BOOL(disable_slow_upsert,
PLUGIN_VAR_THDLOCAL,
"disable slow upsert",
NULL, // check
NULL, // update
false // default
);
#endif
static void tokudb_checkpoint_lock(THD * thd);
static void tokudb_checkpoint_unlock(THD * thd);
......@@ -707,6 +737,24 @@ uint get_tokudb_read_buf_size(THD* thd) {
return THDVAR(thd, read_buf_size);
}
#if TOKU_INCLUDE_UPSERT
bool get_enable_fast_update(THD* thd) {
return (THDVAR(thd, enable_fast_update) != 0);
}
bool get_disable_slow_update(THD* thd) {
return (THDVAR(thd, disable_slow_update) != 0);
}
bool get_enable_fast_upsert(THD* thd) {
return (THDVAR(thd, enable_fast_upsert) != 0);
}
bool get_disable_slow_upsert(THD* thd) {
return (THDVAR(thd, disable_slow_upsert) != 0);
}
#endif
typedef struct txn_progress_info {
char status[200];
THD* thd;
......@@ -1628,6 +1676,12 @@ static struct st_mysql_sys_var *tokudb_system_variables[] = {
MYSQL_SYSVAR(read_block_size),
MYSQL_SYSVAR(read_buf_size),
MYSQL_SYSVAR(row_format),
#if TOKU_INCLUDE_UPSERT
MYSQL_SYSVAR(enable_fast_update),
MYSQL_SYSVAR(disable_slow_update),
MYSQL_SYSVAR(enable_fast_upsert),
MYSQL_SYSVAR(disable_slow_upsert),
#endif
NULL
};
......
storage/tokudb/hatoku_hton.h
View file @ 6f26ea81
......@@ -33,6 +33,12 @@ uint get_tokudb_block_size(THD* thd);
uint get_tokudb_read_block_size(THD* thd);
uint get_tokudb_read_buf_size(THD* thd);
srv_row_format_t get_row_format(THD *thd);
#if TOKU_INCLUDE_UPSERT
bool get_enable_fast_update(THD *thd);
bool get_disable_slow_update(THD *thd);
bool get_enable_fast_upsert(THD *thd);
bool get_disable_slow_upsert(THD *thd);
#endif
extern HASH tokudb_open_tables;
extern pthread_mutex_t tokudb_mutex;
......
storage/tokudb/plug.in deleted 100644 → 0
View file @ 8206e02a
MYSQL_STORAGE_ENGINE(tokudb,,[TokuDB Storage Engine with Fractal Trees], [TokuDB Engine with Fractal Trees], [max,max-no-ndb])
MYSQL_PLUGIN_DIRECTORY(tokudb, [storage/tokudb])
MYSQL_PLUGIN_DYNAMIC(tokudb, [ha_tokudb.la])
storage/tokudb/tests/Makefile 0 → 100644
View file @ 6f26ea81
SRCS = $(wildcard *.cc)
TARGETS = $(patsubst %.cc,%,$(SRCS))
CHECKS = $(patsubst %,%.check,$(TARGETS))
CPPFLAGS = -I..
CXXFLAGS = -g
ifeq ($(GCOV),1)
CXXFLAGS += -fprofile-arcs -ftest-coverage
endif
all: $(TARGETS)
clean:
rm -rf $(TARGETS) *.gcov *.gcno *.gcda
check: $(CHECKS)
true
%.check: %
valgrind ./$<
storage/tokudb/tests/sint_test.cc 0 → 100644
View file @ 6f26ea81
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <tokudb_math.h>
using namespace tokudb;
static void test(int length_bits) {
int64_t max = (1ULL << (length_bits-1)) - 1;
for (int64_t x = -max-1; x <= max; x++) {
for (int64_t y = -max-1; y <= max; y++) {
bool over;
int64_t n = int_add(x, y, length_bits, over);
printf("%lld %lld %lld %u\n", x, y, n, over);
}
}
}
int main(int argc, char *argv[]) {
if (argc > 1) {
for (int i = 1; i < argc; i++) {
test(atoi(argv[i]));
}
}
return 0;
}
storage/tokudb/tests/tokudb_buffer_test.cc 0 → 100644
View file @ 6f26ea81
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <tokudb_buffer.h>
static void test_null() {
tokudb::buffer b;
assert(b.data() == NULL && b.size() == 0 && b.limit() == 0);
b.append(NULL, 0);
assert(b.data() == NULL && b.size() == 0 && b.limit() == 0);
}
static void append_az(tokudb::buffer &b) {
for (char c = 'a'; c <= 'z'; c++) {
b.append(&c, sizeof c);
}
}
static void assert_az(tokudb::buffer &b) {
char *bp = NULL;
for (int i = 0; i < b.size(); i++) {
bp = (char *) b.data() + i;
assert(*bp == 'a'+i);
}
assert(*bp == 'z');
}
static void assert_AZ(tokudb::buffer &b) {
char *bp = NULL;
for (int i = 0; i < b.size(); i++) {
bp = (char *) b.data() + i;
assert(*bp == 'A'+i);
}
assert(*bp == 'Z');
}
static void test_append() {
tokudb::buffer a;
a.append(NULL, 0);
append_az(a);
a.append(NULL, 0);
assert(a.size() == 'z'-'a'+1);
assert(a.size() <= a.limit());
assert_az(a);
tokudb::buffer b(a.data(), 0, a.size());
for (int i = 0; i < b.limit(); i++) {
assert(i <= a.size());
char *ap = (char *) a.data() + i;
assert(i <= b.limit());
char *bp = (char *) b.data() + i;
assert(*ap == *bp);
}
}
static void test_consume() {
tokudb::buffer a;
append_az(a);
tokudb::buffer b(a.data(), 0, a.size());
for (int i = 0; i < b.limit(); i++) {
char c;
b.consume(&c, 1);
assert(c == 'a'+i);
}
assert(b.size() == b.limit());
}
static void test_consume_ptr() {
tokudb::buffer a;
append_az(a);
tokudb::buffer b(a.data(), 0, a.size());
for (int i = 0; i < b.limit(); i++) {
void *p = b.consume_ptr(1);
char c = *(char *)p;
assert(c == 'a'+i);
}
assert(b.size() == b.limit());
assert(b.consume_ptr(1) == NULL);
}
static void test_replace() {
tokudb::buffer a;
append_az(a);
assert_az(a);
for (int i = 0; i < a.size(); i++) {
char newc[1] = { 'A' + i };
a.replace(i, 1, newc, 1);
}
assert_AZ(a);
}
static void test_replace_grow() {
tokudb::buffer a;
append_az(a);
assert_az(a);
// grow field
int s = a.size();
for (int i = 0; i < s; i++) {
char newc[2] = { 'a'+i, 'a'+i };
size_t s = a.size();
a.replace(2*i, 1, newc, 2);
assert(a.size() == s+1);
}
for (int i = 0; i < a.size()/2; i++) {
char *cp = (char *) a.data() + 2*i;
assert(cp[0] == 'a'+i && cp[1] == 'a'+i);
}
}
static void test_replace_shrink() {
tokudb::buffer a;
for (char c = 'a'; c <= 'z'; c++) {
a.append(&c, sizeof c);
a.append(&c, sizeof c);
}
// shrink field
for (int i = 0; i < a.size(); i++) {
char newc[1] = { 'a'+i };
size_t s = a.size();
a.replace(i, 2, newc, 1);
assert(a.size() == s-1);
}
assert_az(a);
}
static void test_replace_null() {
tokudb::buffer a;
append_az(a);
assert_az(a);
// insert between all
int n = a.size();
for (int i = 0; i < n; i++) {
char newc[1] = { 'a'+i };
a.replace(2*i, 0, newc, 1);
}
a.replace(a.size(), 0, (void *)"!", 1);
a.append((void *)"?", 1);
}
int main() {
test_null();
test_append();
test_consume();
test_consume_ptr();
test_replace();
test_replace_grow();
test_replace_shrink();
test_replace_null();
return 0;
}
storage/tokudb/tests/tokudb_math_test.cc 0 → 100644
View file @ 6f26ea81
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <tokudb_math.h>
using namespace tokudb;
static void test_uint_range(uint length_bits) {
assert(uint_low_endpoint(length_bits) == 0);
if (length_bits == 64)
assert(uint_high_endpoint(length_bits) == ~0ULL);
else
assert(uint_high_endpoint(length_bits) == (1ULL<<length_bits)-1);
}
static void test_uint8() {
printf("%s\n", __FUNCTION__);
test_uint_range(8);
bool over;
uint8_t n;
uint64_t m;
for (uint64_t x = 0; x <= (1ULL<<8)-1; x++) {
for (uint64_t y = 0; y <= (1ULL<<8)-1; y++) {
n = uint_add(x, y, 8, over);
m = x + y;
if (m > (1ULL<<8)-1)
assert(over);
else
assert(!over && n == (m % 256));
n = uint_sub(x, y, 8, over);
m = x - y;
if (m > x)
assert(over);
else
assert(!over && n == (m % 256));
}
}
}
static void test_uint16() {
printf("%s\n", __FUNCTION__);
test_uint_range(16);
bool over;
uint16_t n;
uint64_t m;
for (uint64_t x = 0; x <= (1ULL<<16)-1; x++) {
for (uint64_t y = 0; y <= (1ULL<<16)-1; y++) {
n = uint_add(x, y, 16, over);
m = x + y;
if (m > (1ULL<<16)-1)
assert(over);
else
assert(!over && n == (m % (1ULL<<16)));
n = uint_sub(x, y, 16, over);
m = x - y;
if (m > x)
assert(over);
else
assert(!over && n == (m % (1ULL<<16)));
}
}
}
static void test_uint24() {
printf("%s\n", __FUNCTION__);
test_uint_range(24);
bool over;
uint64_t s;
s = uint_add((1ULL<<24)-1, (1ULL<<24)-1, 24, over); assert(over);
s = uint_add((1ULL<<24)-1, 1, 24, over); assert(over);
s = uint_add((1ULL<<24)-1, 0, 24, over); assert(!over && s == (1ULL<<24)-1);
s = uint_add(0, 1, 24, over); assert(!over && s == 1);
s = uint_add(0, 0, 24, over); assert(!over && s == 0);
s = uint_sub(0, 0, 24, over); assert(!over && s == 0);
s = uint_sub(0, 1, 24, over); assert(over);
s = uint_sub(0, (1ULL<<24)-1, 24, over); assert(over);
s = uint_sub((1ULL<<24)-1, (1ULL<<24)-1, 24, over); assert(!over && s == 0);
}
static void test_uint32() {
printf("%s\n", __FUNCTION__);
test_uint_range(32);
bool over;
uint64_t s;
s = uint_add((1ULL<<32)-1, (1ULL<<32)-1, 32, over); assert(over);
s = uint_add((1ULL<<32)-1, 1, 32, over); assert(over);
s = uint_add((1ULL<<32)-1, 0, 32, over); assert(!over && s == (1ULL<<32)-1);
s = uint_add(0, 1, 32, over); assert(!over && s == 1);
s = uint_add(0, 0, 32, over); assert(!over && s == 0);
s = uint_sub(0, 0, 32, over); assert(!over && s == 0);
s = uint_sub(0, 1, 32, over); assert(over);
s = uint_sub(0, (1ULL<<32)-1, 32, over); assert(over);
s = uint_sub((1ULL<<32)-1, (1ULL<<32)-1, 32, over); assert(!over && s == 0);
}
static void test_uint64() {
printf("%s\n", __FUNCTION__);
test_uint_range(64);
bool over;
uint64_t s;
s = uint_add(~0ULL, ~0ULL, 64, over); assert(over);
s = uint_add(~0ULL, 1, 64, over); assert(over);
s = uint_add(~0ULL, 0, 64, over); assert(!over && s == ~0ULL);
s = uint_add(0, 1, 64, over); assert(!over && s == 1);
s = uint_add(0, 0, 64, over); assert(!over && s == 0);
s = uint_sub(0, 0, 64, over); assert(!over && s == 0);
s = uint_sub(0, 1, 64, over); assert(over);
s = uint_sub(0, ~0ULL, 64, over); assert(over);
s = uint_sub(~0ULL, ~0ULL, 64, over); assert(!over && s == 0);
}
static int64_t sign_extend(uint length_bits, int64_t n) {
return n | ~((1ULL<<(length_bits-1))-1);
}
static void test_int_range(uint length_bits) {
assert(int_high_endpoint(length_bits) == (1ULL<<(length_bits-1))-1);
assert(int_low_endpoint(length_bits) == sign_extend(length_bits, 1ULL<<(length_bits-1)));
}
static void test_int8() {
printf("%s\n", __FUNCTION__);
test_int_range(8);
int64_t max = (1LL << 7);
for (int64_t x = -max; x <= max-1; x++) {
for (int64_t y = -max; y <= max-1; y++) {
bool over;
int64_t n, m;
n = int_add(x, y, 8, over);
m = x + y;
if (m > max-1)
assert(over);
else if (m < -max)
assert(over);
else
assert(!over && n == m);
n = int_sub(x, y, 8, over);
m = x - y;
if (m > max-1)
assert(over);
else if (m < -max)
assert(over);
else
assert(!over && n == m);
}
}
}
static void test_int16() {
printf("%s\n", __FUNCTION__);
test_int_range(16);
int64_t max = (1LL << 15);
for (int64_t x = -max; x <= max-1; x++) {
for (int64_t y = -max; y <= max-1; y++) {
bool over;
int64_t n, m;
n = int_add(x, y, 16, over);
m = x + y;
if (m > max-1)
assert(over);
else if (m < -max)
assert(over);
else
assert(!over && n == m);
n = int_sub(x, y, 16, over);
m = x - y;
if (m > max-1)
assert(over);
else if (m < -max)
assert(over);
else
assert(!over && n == m);
}
}
}
static void test_int24() {
printf("%s\n", __FUNCTION__);
test_int_range(24);
int64_t s;
bool over;
s = int_add(1, (1ULL<<23)-1, 24, over); assert(over);
s = int_add((1ULL<<23)-1, 1, 24, over); assert(over);
s = int_sub(-1, (1ULL<<23), 24, over); assert(!over && s == (1ULL<<23)-1);
s = int_sub((1ULL<<23), 1, 24, over); assert(over);
s = int_add(0, 0, 24, over); assert(!over && s == 0);
s = int_sub(0, 0, 24, over); assert(!over && s == 0);
s = int_add(0, -1, 24, over); assert(!over && s == -1);
s = int_sub(0, 1, 24, over); assert(!over && s == -1);
s = int_add(0, (1ULL<<23), 24, over); assert(!over && (s & (1ULL<<24)-1) == (1ULL<<23));
s = int_sub(0, (1ULL<<23)-1, 24, over); assert(!over && (s & (1ULL<<24)-1) == (1ULL<<23)+1);
s = int_add(-1, 0, 24, over); assert(!over && s == -1);
s = int_add(-1, 1, 24, over); assert(!over && s == 0);
s = int_sub(-1, -1, 24, over); assert(!over && s == 0);
s = int_sub(-1, (1ULL<<23)-1, 24, over); assert(!over && (s & (1ULL<<24)-1) == (1ULL<<23));
}
static void test_int32() {
printf("%s\n", __FUNCTION__);
test_int_range(32);
int64_t s;
bool over;
s = int_add(1, (1ULL<<31)-1, 32, over); assert(over);
s = int_add((1ULL<<31)-1, 1, 32, over); assert(over);
s = int_sub(-1, (1ULL<<31), 32, over); assert(s == (1ULL<<31)-1 && !over);
s = int_sub((1ULL<<31), 1, 32, over); assert(over);
s = int_add(0, 0, 32, over); assert(s == 0 && !over);
s = int_sub(0, 0, 32, over); assert(s == 0 && !over);
s = int_add(0, -1, 32, over); assert(s == -1 && !over);
s = int_sub(0, 1, 32, over); assert(s == -1 && !over);
s = int_add(0, (1ULL<<31), 32, over); assert((s & (1ULL<<32)-1) == (1ULL<<31) && !over);
s = int_sub(0, (1ULL<<31)-1, 32, over); assert((s & (1ULL<<32)-1) == (1ULL<<31)+1 && !over);
s = int_add(-1, 0, 32, over); assert(s == -1 && !over);
s = int_add(-1, 1, 32, over); assert(s == 0 && !over);
s = int_sub(-1, -1, 32, over); assert(s == 0 && !over);
s = int_sub(-1, (1ULL<<31)-1, 32, over); assert((s & (1ULL<<32)-1) == (1ULL<<31) && !over);
}
static void test_int64() {
printf("%s\n", __FUNCTION__);
test_int_range(64);
int64_t s;
bool over;
s = int_add(1, (1ULL<<63)-1, 64, over); assert(over);
s = int_add((1ULL<<63)-1, 1, 64, over); assert(over);
s = int_sub(-1, (1ULL<<63), 64, over); assert(s == (1ULL<<63)-1 && !over);
s = int_sub((1ULL<<63), 1, 64, over); assert(over);
s = int_add(0, 0, 64, over); assert(s == 0 && !over);
s = int_sub(0, 0, 64, over); assert(s == 0 && !over);
s = int_add(0, -1, 64, over); assert(s == -1 && !over);
s = int_sub(0, 1, 64, over); assert(s == -1 && !over);
s = int_add(0, (1ULL<<63), 64, over); assert(s == (1ULL<<63) && !over);
s = int_sub(0, (1ULL<<63)-1, 64, over); assert(s == (1ULL<<63)+1 && !over);
s = int_add(-1, 0, 64, over); assert(s == -1 && !over);
s = int_add(-1, 1, 64, over); assert(s == 0 && !over);
s = int_sub(-1, -1, 64, over); assert(s == 0 && !over);
s = int_sub(-1, (1ULL<<63)-1, 64, over); assert(s == (1ULL<<63) && !over);
}
static void test_int_sign(uint length_bits) {
printf("%s %u\n", __FUNCTION__, length_bits);
int64_t n;
n = int_high_endpoint(length_bits);
assert(int_sign_extend(n, length_bits) == n);
n = (1ULL<<(length_bits-1));
assert(int_sign_extend(n, length_bits) == -n);
}
static void test_int_sign() {
test_int_sign(8);
test_int_sign(16);
test_int_sign(24);
test_int_sign(32);
test_int_sign(64);
}
int main(int argc, char *argv[]) {
if (1) test_int_sign();
if (1) test_int8();
if (1) test_int16();
if (1) test_int24();
if (1) test_int32();
if (1) test_int64();
if (1) test_uint8();
if (1) test_uint16();
if (1) test_uint24();
if (1) test_uint32();
if (1) test_uint64();
return 0;
}
storage/tokudb/tests/uint_test.cc 0 → 100644
View file @ 6f26ea81
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <tokudb_math.h>
using namespace tokudb;
static void test(int length_bits) {
printf("%s %d\n", __FUNCTION__, length_bits);
uint64_t max = (1ULL << length_bits) - 1;
for (uint64_t x = 0; x <= max; x++) {
for (uint64_t y = 0; y <= max; y++) {
bool over;
uint64_t n = uint_add(x, y, max, over);
printf("%llu %llu %llu\n", x, y, n);
}
}
}
int main(int argc, char *argv[]) {
if (argc > 1) {
for (int i = 1; i < argc; i++) {
test(atoi(argv[i]));
}
}
return 0;
}
storage/tokudb/tokudb_buffer.h 0 → 100644
View file @ 6f26ea81
#if !defined(_TOKUDB_BUFFER_H)
#define _TOKUDB_BUFFER_H
namespace tokudb {
// A Buffer manages a contiguous chunk of memory and supports appending new data to the end of the buffer, and
// consuming chunks from the beginning of the buffer. The buffer will reallocate memory when appending
// new data to a full buffer.
class buffer {
public:
buffer(void *data, size_t s, size_t l) : m_data(data), m_size(s), m_limit(l), m_is_static(true) {
}
buffer() : m_data(NULL), m_size(0), m_limit(0), m_is_static(false) {
}
virtual ~buffer() {
if (!m_is_static)
free(m_data);
}
// Return a pointer to the end of the buffer suitable for appending a fixed number of bytes.
void *append_ptr(size_t s) {
maybe_realloc(s);
void *p = (char *) m_data + m_size;
m_size += s;
return p;
}
// Append bytes to the buffer
void append(void *p, size_t s) {
memcpy(append_ptr(s), p, s);
}
// Return a pointer to the next location in the buffer where bytes are consumed from.
void *consume_ptr(size_t s) {
if (m_size + s > m_limit)
return NULL;
void *p = (char *) m_data + m_size;
m_size += s;
return p;
}
// Consume bytes from the buffer.
void consume(void *p, size_t s) {
memcpy(p, consume_ptr(s), s);
}
// Replace a field in the buffer with new data. If the new data size is different, then readjust the
// size of the buffer and move things around.
void replace(size_t offset, size_t old_s, void *new_p, size_t new_s) {
assert(offset + old_s <= m_size);
if (new_s > old_s)
maybe_realloc(new_s - old_s);
char *data_offset = (char *) m_data + offset;
if (new_s != old_s) {
size_t n = m_size - (offset + old_s);
assert(offset + new_s + n <= m_limit && offset + old_s + n <= m_limit);
memmove(data_offset + new_s, data_offset + old_s, n);
if (new_s > old_s)
m_size += new_s - old_s;
else
m_size -= old_s - new_s;
assert(m_size <= m_limit);
}
memcpy(data_offset, new_p, new_s);
}
// Return a pointer to the data in the buffer
void *data() {
return m_data;
}
// Return the size of the data in the buffer
size_t size() {
return m_size;
}
// Return the size of the underlying memory in the buffer
size_t limit() {
return m_limit;
}
private:
// Maybe reallocate the buffer when it becomes full by doubling its size.
void maybe_realloc(size_t s) {
if (m_size + s > m_limit) {
size_t new_limit = m_limit * 2;
if (new_limit < m_size + s)
new_limit = m_size + s;
assert(!m_is_static);
m_data = realloc(m_data, new_limit);
m_limit = new_limit;
}
}
private:
void *m_data;
size_t m_size;
size_t m_limit;
bool m_is_static;
};
};
#endif
storage/tokudb/tokudb_math.h 0 → 100644
View file @ 6f26ea81
#if !defined(_TOKUDB_MATH_H)
#define _TOKUDB_MATH_H
namespace tokudb {
// Add and subtract ints with overflow detection.
// Overflow detection adapted from "Hackers Delight", Henry S. Warren
// Return a bit mask for bits 0 .. length_bits-1
static uint64_t uint_mask(uint length_bits) __attribute__((unused));
static uint64_t uint_mask(uint length_bits) {
return length_bits == 64 ? ~0ULL : (1ULL<<length_bits)-1;
}
// Return the highest unsigned int with a given number of bits
static uint64_t uint_high_endpoint(uint length_bits) __attribute__((unused));
static uint64_t uint_high_endpoint(uint length_bits) {
return uint_mask(length_bits);
}
// Return the lowest unsigned int with a given number of bits
static uint64_t uint_low_endpoint(uint length_bits) __attribute__((unused));
static uint64_t uint_low_endpoint(uint length_bits) {
return 0;
}
// Add two unsigned integers with max maximum value.
// If there is an overflow then set the sum to the max.
// Return the sum and the overflow.
static uint64_t uint_add(uint64_t x, uint64_t y, uint length_bits, bool &over) __attribute__((unused));
static uint64_t uint_add(uint64_t x, uint64_t y, uint length_bits, bool &over) {
uint64_t mask = uint_mask(length_bits);
assert((x & ~mask) == 0 && (y & ~mask) == 0);
uint64_t s = (x + y) & mask;
over = s < x; // check for overflow
return s;
}
// Subtract two unsigned ints with max maximum value.
// If there is an over then set the difference to 0.
// Return the difference and the overflow.
static uint64_t uint_sub(uint64_t x, uint64_t y, uint length_bits, bool &over) __attribute__((unused));
static uint64_t uint_sub(uint64_t x, uint64_t y, uint length_bits, bool &over) {
uint64_t mask = uint_mask(length_bits);
assert((x & ~mask) == 0 && (y & ~mask) == 0);
uint64_t s = (x - y) & mask;
over = s > x; // check for overflow
return s;
}
// Return the highest int with a given number of bits
static int64_t int_high_endpoint(uint length_bits) __attribute__((unused));
static int64_t int_high_endpoint(uint length_bits) {
return (1ULL<<(length_bits-1))-1;
}
// Return the lowest int with a given number of bits
static int64_t int_low_endpoint(uint length_bits) __attribute__((unused));
static int64_t int_low_endpoint(uint length_bits) {
int64_t mask = uint_mask(length_bits);
return (1ULL<<(length_bits-1)) | ~mask;
}
// Sign extend to 64 bits an int with a given number of bits
static int64_t int_sign_extend(int64_t n, uint length_bits) __attribute__((unused));
static int64_t int_sign_extend(int64_t n, uint length_bits) {
if (n & (1ULL<<(length_bits-1)))
n |= ~uint_mask(length_bits);
return n;
}
// Add two signed ints with max maximum value.
// If there is an overflow then set the sum to the max or the min of the int range,
// depending on the sign bit.
// Sign extend to 64 bits.
// Return the sum and the overflow.
static int64_t int_add(int64_t x, int64_t y, uint length_bits, bool &over) __attribute__((unused));
static int64_t int_add(int64_t x, int64_t y, uint length_bits, bool &over) {
int64_t mask = uint_mask(length_bits);
int64_t n = (x + y) & mask;
over = (((n ^ x) & (n ^ y)) >> (length_bits-1)) & 1; // check for overflow
if (n & (1LL<<(length_bits-1)))
n |= ~mask; // sign extend
return n;
}
// Subtract two signed ints.
// If there is an overflow then set the sum to the max or the min of the int range,
// depending on the sign bit.
// Sign extend to 64 bits.
// Return the sum and the overflow.
static int64_t int_sub(int64_t x, int64_t y, uint length_bits, bool &over) __attribute__((unused));
static int64_t int_sub(int64_t x, int64_t y, uint length_bits, bool &over) {
int64_t mask = uint_mask(length_bits);
int64_t n = (x - y) & mask;
over = (((x ^ y) & (n ^ x)) >> (length_bits-1)) & 1; // check for overflow
if (n & (1LL<<(length_bits-1)))
n |= ~mask; // sign extend
return n;
}
} // namespace tokudb
#endif
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