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MDEV-30411: Fix my_timer_init() to match the code in as my_timer_cycles()

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make the compile-time logic in my_timer_cycles() also #define
MY_TIMER_ROUTINE_CYCLES to indicate which implementation it is using.
Then, make my_timer_init() use MY_TIMER_ROUTINE_CYCLES.

This leaves us with just one set of compile-time #if's which determine
how we read time in #cycles.

Reviewer (and commit message author): Sergei Petrunia <sergey@mariadb.com>
This commit is contained in:
Daniel Black
2023-02-09 16:55:54 +11:00
parent 52f6f364d9
commit 55cf4194f9
2 changed files with 34 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
include/my_rdtsc.h
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@@ -72,6 +72,26 @@ struct my_timer_info
typedef struct my_timer_info MY_TIMER_INFO;
#define MY_TIMER_ROUTINE_RDTSC 5
#define MY_TIMER_ROUTINE_ASM_IA64 6
#define MY_TIMER_ROUTINE_PPC_GET_TIMEBASE 7
#define MY_TIMER_ROUTINE_GETHRTIME 9
#define MY_TIMER_ROUTINE_READ_REAL_TIME 10
#define MY_TIMER_ROUTINE_CLOCK_GETTIME 11
#define MY_TIMER_ROUTINE_GETTIMEOFDAY 13
#define MY_TIMER_ROUTINE_QUERYPERFORMANCECOUNTER 14
#define MY_TIMER_ROUTINE_GETTICKCOUNT 15
#define MY_TIMER_ROUTINE_TIME 16
#define MY_TIMER_ROUTINE_TIMES 17
#define MY_TIMER_ROUTINE_FTIME 18
#define MY_TIMER_ROUTINE_ASM_GCC_SPARC64 23
#define MY_TIMER_ROUTINE_ASM_GCC_SPARC32 24
#define MY_TIMER_ROUTINE_MACH_ABSOLUTE_TIME 25
#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
#define MY_TIMER_ROUTINE_ASM_S390 28
#define MY_TIMER_ROUTINE_AARCH64 29
#define MY_TIMER_ROUTINE_RISCV 30
C_MODE_START
/**
@@ -133,28 +153,36 @@ C_MODE_START
static inline ulonglong my_timer_cycles(void)
{
# if __has_builtin(__builtin_readcyclecounter) && !defined (__aarch64__)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_AARCH64
return __builtin_readcyclecounter();
# elif defined _M_IX86 || defined _M_X64 || defined __i386__ || defined __x86_64__
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_RDTSC
return __rdtsc();
#elif defined _M_ARM64
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_AARCH64
return _ReadStatusReg(ARM64_CNTVCT);
# elif defined(__INTEL_COMPILER) && defined(__ia64__) && defined(HAVE_IA64INTRIN_H)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_ASM_IA64
return (ulonglong) __getReg(_IA64_REG_AR_ITC); /* (3116) */
#elif defined(__GNUC__) && defined(__ia64__)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_ASM_IA64
{
ulonglong result;
__asm __volatile__ ("mov %0=ar.itc" : "=r" (result));
return result;
}
#elif defined __GNUC__ && defined __powerpc__
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_PPC_GET_TIMEBASE
return __builtin_ppc_get_timebase();
#elif defined(__GNUC__) && defined(__sparcv9) && defined(_LP64)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_ASM_GCC_SPARC64
{
ulonglong result;
__asm __volatile__ ("rd %%tick,%0" : "=r" (result));
return result;
}
#elif defined(__GNUC__) && defined(__sparc__) && !defined(_LP64)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_ASM_GCC_SPARC32
{
union {
ulonglong wholeresult;
@@ -167,6 +195,7 @@ static inline ulonglong my_timer_cycles(void)
return result.wholeresult;
}
#elif defined(__GNUC__) && defined(__s390__)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_ASM_S390
/* covers both s390 and s390x */
{
ulonglong result;
@@ -174,12 +203,14 @@ static inline ulonglong my_timer_cycles(void)
return result;
}
#elif defined(__GNUC__) && defined (__aarch64__)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_AARCH64
{
ulonglong result;
__asm __volatile("mrs %0, CNTVCT_EL0" : "=&r" (result));
return result;
}
#elif defined(__riscv)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_RISCV
/* Use RDCYCLE (and RDCYCLEH on riscv32) */
{
# if __riscv_xlen == 32
@@ -202,9 +233,11 @@ static inline ulonglong my_timer_cycles(void)
}
# endif
#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
#define MY_TIMER_ROUTINE_CYCLES MY_TIMER_ROUTINE_GETHRTIME
/* gethrtime may appear as either cycle or nanosecond counter */
return (ulonglong) gethrtime();
#else
#define MY_TIMER_ROUTINE_CYCLES 0
return 0;
#endif
}
@@ -241,25 +274,5 @@ void my_timer_init(MY_TIMER_INFO *mti);
C_MODE_END
#define MY_TIMER_ROUTINE_RDTSC 5
#define MY_TIMER_ROUTINE_ASM_IA64 6
#define MY_TIMER_ROUTINE_PPC_GET_TIMEBASE 7
#define MY_TIMER_ROUTINE_GETHRTIME 9
#define MY_TIMER_ROUTINE_READ_REAL_TIME 10
#define MY_TIMER_ROUTINE_CLOCK_GETTIME 11
#define MY_TIMER_ROUTINE_GETTIMEOFDAY 13
#define MY_TIMER_ROUTINE_QUERYPERFORMANCECOUNTER 14
#define MY_TIMER_ROUTINE_GETTICKCOUNT 15
#define MY_TIMER_ROUTINE_TIME 16
#define MY_TIMER_ROUTINE_TIMES 17
#define MY_TIMER_ROUTINE_FTIME 18
#define MY_TIMER_ROUTINE_ASM_GCC_SPARC64 23
#define MY_TIMER_ROUTINE_ASM_GCC_SPARC32 24
#define MY_TIMER_ROUTINE_MACH_ABSOLUTE_TIME 25
#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
#define MY_TIMER_ROUTINE_ASM_S390 28
#define MY_TIMER_ROUTINE_AARCH64 29
#define MY_TIMER_ROUTINE_RISCV 30
#endif