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| author | Sergey Vojtovich <svoj@mariadb.org> | 2017-12-07 15:03:59 +0200 |
|---|---|---|
| committer | Monty <monty@mariadb.org> | 2017-12-08 13:44:45 +0200 |
| commit | b3346c2f41d0f7bd0d919826592b37ae09fa41c8 (patch) | |
| tree | f9bd618332962cf5bbd3207e536d76f3a011e3ad /storage/innobase/include/ut0ut.h | |
| parent | 07e9ff1fe18999e1acd640ee3b2169c3f506fb35 (diff) | |
| download | mariadb-git-b3346c2f41d0f7bd0d919826592b37ae09fa41c8.tar.gz | |
Restore LF_BACKOFF
Moved InnoDB UT_RELAX_CPU() to server. Restored cross-platform LF_BACKOFF
implementation basing on UT_RELAX_CPU().
Diffstat (limited to 'storage/innobase/include/ut0ut.h')
| -rw-r--r-- | storage/innobase/include/ut0ut.h | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/storage/innobase/include/ut0ut.h b/storage/innobase/include/ut0ut.h index 4e9c2599933..352f5cce83d 100644 --- a/storage/innobase/include/ut0ut.h +++ b/storage/innobase/include/ut0ut.h @@ -52,35 +52,6 @@ Created 1/20/1994 Heikki Tuuri /** Time stamp */ typedef time_t ib_time_t; -#ifdef HAVE_PAUSE_INSTRUCTION - /* According to the gcc info page, asm volatile means that the - instruction has important side-effects and must not be removed. - Also asm volatile may trigger a memory barrier (spilling all registers - to memory). */ -# ifdef __SUNPRO_CC -# define UT_RELAX_CPU() asm ("pause" ) -# else -# define UT_RELAX_CPU() __asm__ __volatile__ ("pause") -# endif /* __SUNPRO_CC */ - -#elif defined(HAVE_FAKE_PAUSE_INSTRUCTION) -# define UT_RELAX_CPU() __asm__ __volatile__ ("rep; nop") -#elif defined _WIN32 - /* In the Win32 API, the x86 PAUSE instruction is executed by calling - the YieldProcessor macro defined in WinNT.h. It is a CPU architecture- - independent way by using YieldProcessor. */ -# define UT_RELAX_CPU() YieldProcessor() -#elif defined(__powerpc__) && defined __GLIBC__ -# include <sys/platform/ppc.h> -# define UT_RELAX_CPU() __ppc_get_timebase() -#else -# define UT_RELAX_CPU() do { \ - volatile int32 volatile_var; \ - int32 oldval= 0; \ - my_atomic_cas32(&volatile_var, &oldval, 1); \ - } while (0) -#endif - #if defined (__GNUC__) # define UT_COMPILER_BARRIER() __asm__ __volatile__ ("":::"memory") #elif defined (_MSC_VER) |