[t:4388], add test for checkpoint during flush

git-svn-id: file:///svn/toku/tokudb@38768 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/brt-flusher-internal.h

@@ -10,6 +10,17 @@
 
 C_BEGIN
 
+#define ft_flush_before_applying_inbox 1
+#define ft_flush_before_child_pin 2
+#define ft_flush_after_child_pin 3
+#define ft_flush_before_split 4
+#define ft_flush_during_split 5
+#define ft_flush_before_merge 6
+#define ft_flush_after_merge 7
+#define ft_flush_after_rebalance 8
+#define ft_flush_before_unpin_remove 9
+#define ft_flush_before_pin_second_node_for_merge 10
+
 typedef struct flusher_advice FLUSHER_ADVICE;
 
 /**

newbrt/brt-flusher.c

@@ -19,17 +19,6 @@ void toku_brt_flusher_get_status(BRT_FLUSHER_STATUS status) {
     *status = brt_flusher_status;
 }
 
-#define ft_flush_before_applying_inbox 1
-#define ft_flush_before_child_pin 2
-#define ft_flush_after_child_pin 3
-#define ft_flush_before_split 4
-#define ft_flush_during_split 5
-#define ft_flush_before_merge 6
-#define ft_flush_after_merge 7
-#define ft_flush_after_rebalance 8
-#define ft_flush_before_unpin_remove 9
-#define ft_flush_before_pin_second_node_for_merge 10
-
 //
 // For test purposes only.
 // These callbacks are never used in production code, only as a way

newbrt/tests/test-checkpoint-during-flush.c

+#ident "$Id: test-del-inorder.c 32975 2011-07-11 23:42:51Z leifwalsh $"
+/* The goal of this test.  Make sure that inserts stay behind deletes. */
+
+
+#include "test.h"
+#include "includes.h"
+#include <brt-cachetable-wrappers.h>
+#include "brt-flusher.h"
+#include "brt-flusher-internal.h"
+#include "checkpoint.h"
+
+static TOKUTXN const null_txn = 0;
+static DB * const null_db = 0;
+
+enum { NODESIZE = 1024, KSIZE=NODESIZE-100, TOKU_PSIZE=20 };
+
+CACHETABLE ct;
+BRT t;
+
+BOOL checkpoint_called;
+BOOL checkpoint_callback_called;
+toku_pthread_t checkpoint_tid;
+
+
+// callback functions for flush_some_child
+static bool
+dont_destroy_bn(void* UU(extra))
+{
+    return false;
+}
+static void merge_should_not_happen(struct flusher_advice* UU(fa),
+                              struct brt_header* UU(h),
+                              BRTNODE UU(parent),
+                              int UU(childnum),
+                              BRTNODE UU(child),
+                              void* UU(extra))
+{
+    assert(FALSE);
+}
+
+static bool recursively_flush_should_not_happen(BRTNODE UU(child), void* UU(extra)) {
+    assert(FALSE);
+}
+
+static int child_to_flush(struct brt_header* UU(h), BRTNODE parent, void* UU(extra)) {
+    assert(parent->height == 1);
+    assert(parent->n_children == 1);
+    return 0;
+}
+
+static void dummy_update_status(BRTNODE UU(child), int UU(dirtied), void* UU(extra)) {
+}
+
+
+static void checkpoint_callback(void* UU(extra)) {
+    usleep(1*1024*1024);
+    checkpoint_callback_called = TRUE;
+}
+
+
+static void *do_checkpoint(void *arg) {
+    // first verify that checkpointed_data is correct;
+    if (verbose) printf("starting a checkpoint\n");
+    int r = toku_checkpoint(ct, NULL, checkpoint_callback, NULL, NULL, NULL, CLIENT_CHECKPOINT);
+    assert_zero(r);
+    if (verbose) printf("completed a checkpoint\n");
+    return arg;
+}
+
+
+static void flusher_callback(int state, void* extra) {
+    BOOL after_child_pin = *(BOOL *)extra;
+    if (verbose) {
+        printf("state %d\n", state);
+    }
+    if ((state == ft_flush_before_child_pin && !after_child_pin) ||
+        (state == ft_flush_after_child_pin && after_child_pin)) {
+        checkpoint_called = TRUE;
+        int r = toku_pthread_create(&checkpoint_tid, NULL, do_checkpoint, NULL); 
+        assert_zero(r);
+        while (!checkpoint_callback_called) {
+            usleep(1*1024*1024);
+        }
+    }
+}
+
+static void
+doit (BOOL after_child_pin) {
+    BLOCKNUM node_leaf, node_root;
+
+    int r;
+    checkpoint_called = FALSE;
+    checkpoint_callback_called = FALSE;
+
+    toku_flusher_thread_set_callback(flusher_callback, &after_child_pin);
+    
+    r = toku_brt_create_cachetable(&ct, 500*1024*1024, ZERO_LSN, NULL_LOGGER); assert(r==0);
+    unlink("foo.brt");
+    r = toku_open_brt("foo.brt", 1, &t, NODESIZE, NODESIZE/2, ct, null_txn, toku_builtin_compare_fun, null_db);
+    assert(r==0);
+
+    toku_testsetup_initialize();  // must precede any other toku_testsetup calls
+
+    r = toku_testsetup_leaf(t, &node_leaf, 1, NULL, NULL);
+    assert(r==0);
+
+    r = toku_testsetup_nonleaf(t, 1, &node_root, 1, &node_leaf, 0, 0);
+    assert(r==0);
+
+    r = toku_testsetup_root(t, node_root);
+    assert(r==0);
+
+
+    r = toku_testsetup_insert_to_nonleaf(
+        t, 
+        node_root, 
+        BRT_INSERT,
+        "a",
+        2,
+        NULL,
+        0
+        );
+
+    // at this point, we have inserted a message into
+    // the root, and we wish to flush it, the leaf
+    // should be empty
+
+    struct flusher_advice fa;
+    flusher_advice_init(
+        &fa,
+        child_to_flush,
+        dont_destroy_bn,
+        recursively_flush_should_not_happen,
+        merge_should_not_happen,
+        dummy_update_status,
+        default_pick_child_after_split,
+        NULL
+        );
+    
+    BRTNODE node = NULL;
+    struct brtnode_fetch_extra bfe;
+    fill_bfe_for_min_read(&bfe, t->h);
+    toku_pin_brtnode_off_client_thread(
+        t->h, 
+        node_root,
+        toku_cachetable_hash(t->h->cf, node_root),
+        &bfe,
+        0,
+        NULL,
+        &node
+        );
+    assert(node->height == 1);
+    assert(node->n_children == 1);
+    assert(toku_bnc_nbytesinbuf(BNC(node, 0)) > 0);
+
+    // do the flush
+    flush_some_child(t->h, node, &fa);
+    assert(checkpoint_callback_called);
+
+    // now let's pin the root again and make sure it is flushed
+    toku_pin_brtnode_off_client_thread(
+        t->h, 
+        node_root,
+        toku_cachetable_hash(t->h->cf, node_root),
+        &bfe,
+        0,
+        NULL,
+        &node
+        );
+    assert(node->height == 1);
+    assert(node->n_children == 1);
+    assert(toku_bnc_nbytesinbuf(BNC(node, 0)) == 0);
+    toku_unpin_brtnode(t, node);
+
+    void *ret;
+    r = toku_pthread_join(checkpoint_tid, &ret); 
+    assert_zero(r);
+
+    //
+    // now the dictionary has been checkpointed
+    // copy the file to something with a new name,
+    // open it, and verify that the state of what is
+    // checkpointed is what we expect
+    //
+
+    r = system("cp foo.brt bar.brt ");
+    assert_zero(r);
+
+    BRT c_brt;
+    r = toku_open_brt("bar.brt", 0, &c_brt, NODESIZE, NODESIZE/2, ct, null_txn, toku_builtin_compare_fun, null_db);
+    assert(r==0);
+
+    //
+    // now pin the root, verify that we have a message in there, and that it is clean
+    //
+    fill_bfe_for_full_read(&bfe, c_brt->h);
+    toku_pin_brtnode_off_client_thread(
+        c_brt->h, 
+        node_root,
+        toku_cachetable_hash(c_brt->h->cf, node_root),
+        &bfe,
+        0,
+        NULL,
+        &node
+        );
+    assert(node->height == 1);
+    assert(!node->dirty);
+    assert(node->n_children == 1);
+    if (after_child_pin) {
+        assert(toku_bnc_nbytesinbuf(BNC(node, 0)) == 0);
+    }
+    else {
+        assert(toku_bnc_nbytesinbuf(BNC(node, 0)) > 0);
+    }
+    toku_unpin_brtnode_off_client_thread(c_brt->h, node);
+
+    toku_pin_brtnode_off_client_thread(
+        c_brt->h, 
+        node_leaf,
+        toku_cachetable_hash(c_brt->h->cf, node_root),
+        &bfe,
+        0,
+        NULL,
+        &node
+        );
+    assert(node->height == 0);
+    assert(!node->dirty);
+    assert(node->n_children == 1);
+    if (after_child_pin) {
+        assert(BLB_NBYTESINBUF(node,0) > 0);
+    }
+    else {
+        assert(BLB_NBYTESINBUF(node,0) == 0);
+    }
+    toku_unpin_brtnode_off_client_thread(c_brt->h, node);
+
+    struct check_pair pair1 = {2, "a", 0, NULL, 0};
+    DBT k;
+    r = toku_brt_lookup(c_brt, toku_fill_dbt(&k, "a", 2), lookup_checkf, &pair1);
+    assert(r==0);
+
+
+    r = toku_close_brt(t, 0);    assert(r==0);
+    r = toku_close_brt(c_brt, 0);    assert(r==0);
+    r = toku_cachetable_close(&ct); assert(r==0);
+}
+
+int
+test_main (int argc __attribute__((__unused__)), const char *argv[] __attribute__((__unused__))) {
+    doit(FALSE);
+    doit(TRUE);
+    return 0;
+}