Added support for rep; nop replacing PAUSE due to Solaris bug

Replaced abs_top_srcdir with top_srcdir, not sure it's an
improvement but at least it's known that abs_top_srcdir
in cases have a problem and this is a more common variable
to use for the same purpose.

configure.in

@@ -2371,9 +2371,24 @@ AC_TRY_RUN([
   [x86_pause_exists=no],
   [x86_pause_exists=no]  # Cross-compile, assume no PAUSE instruction
 )
+AC_TRY_RUN([
+    int main() {
+      __asm__ __volatile__ ("rep; nop");
+      return 0;
+    }
+  ],
+  [x86_fake_pause_exists=yes],
+  [x86_fake_pause_exists=no],
+  [x86_fake_pause_exists=no]  # Cross-compile, assume no x86 NOP instruction
+)
 if test "$x86_pause_exists" = "yes"
 then
   AC_DEFINE([HAVE_PAUSE_INSTRUCTION], [1], [Does x86 PAUSE instruction exist])
+else
+  if test "$x86_fake_pause_exists" = "yes"
+  then
+    AC_DEFINE([HAVE_FAKE_PAUSE_INSTRUCTION], [1], [Does x86 NOP instruction exist])
+  fi
 fi
 
 # Check if pthread_attr_setscope() exists

mysys/Makefile.am

@@ -131,7 +131,7 @@ libmysys_a_LIBADD += probes_mysql.o
 libmysys_a_DEPENDENCIES += probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = mf_keycache.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

sql/Makefile.am

@@ -212,7 +212,7 @@ libndb_la_DEPENDENCIES = dtrace_files dtrace_providers probes_libndb.o
 mysqld_LDADD += probes_all.o
 mysqld_DEPENDENCIES += dtrace_files dtrace_providers probes_all.o
 CLEANFILES += dtrace_files dtrace_providers probes_all.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/archive/Makefile.am

@@ -72,7 +72,7 @@ libarchive_a_LIBADD = probes_mysql.o
 libarchive_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = libarchive_a-ha_archive.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/blackhole/Makefile.am

@@ -54,7 +54,7 @@ libblackhole_a_LIBADD = probes_mysql.o
 libblackhole_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = libblackhole_a-ha_blackhole.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/csv/Makefile.am

@@ -47,7 +47,7 @@ libcsv_a_LIBADD = probes_mysql.o
 libcsv_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = libcsv_a-ha_tina.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/example/Makefile.am

@@ -55,7 +55,7 @@ libexample_a_DEPENDENCIES = probes_mysql.o
 CLEANFILES =
 BUILT_SOURCES =
 DTRACEFILES = libexample_a-ha_example.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/federated/Makefile.am

@@ -54,7 +54,7 @@ libfederated_a_LIBADD = probes_mysql.o
 libfederated_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = libfederated_a-ha_federated.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/heap/Makefile.am

@@ -56,7 +56,7 @@ libheap_a_LIBADD = probes_mysql.o
 libheap_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = ha_heap.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/innobase/include/ut0ut.h

@@ -20,6 +20,9 @@ typedef time_t	ib_time_t;
 #ifdef HAVE_PAUSE_INSTRUCTION
 #define PAUSE_INSTRUCTION() {__asm__ __volatile__ ("pause");}
 #else
+#ifdef HAVE_FAKE_PAUSE_INSTRUCTION
+#define PAUSE_INSTRUCTION() {__asm__ __volatile__ ("rep; nop");}
+#else
 #ifdef UNIV_SYNC_ATOMIC
 #define PAUSE_INSTRUCTION() \
   { \
@@ -30,6 +33,7 @@ typedef time_t	ib_time_t;
 #define PAUSE_INSTRUCTION()
 #endif
 #endif
+#endif
 
 /************************************************************
 Gets the high 32 bits in a ulint. That is makes a shift >> 32,

storage/myisam/Makefile.am

@@ -155,7 +155,7 @@ libmyisam_a_LIBADD = probes_mysql.o
 libmyisam_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES += probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = ha_myisam.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@

storage/myisammrg/Makefile.am

@@ -45,7 +45,7 @@ libmyisammrg_a_LIBADD = probes_mysql.o
 libmyisammrg_a_DEPENDENCIES = probes_mysql.o dtrace_files dtrace_providers
 CLEANFILES = probes_mysql.o dtrace_files dtrace_providers
 DTRACEFILES = ha_myisammrg.o
-DTRACEPROVIDER = $(abs_top_srcdir)/sql/probes_mysql.d
+DTRACEPROVIDER = $(top_srcdir)/sql/probes_mysql.d
 
 dtrace_files:
 	echo $(DTRACEFILES) > $@