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mdbx: add timed auto-sync feature.

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Change-Id: Ia9b8529fda321d5f78b306f270d157a78f708916
This commit is contained in:
Leonid Yuriev
2019-08-23 13:13:20 +03:00
parent 68e0076ca3
commit 4ceaf842fe
5 changed files with 133 additions and 2 deletions
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68
src/osal.c
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@@ -1223,3 +1223,71 @@ __cold void mdbx_osal_jitter(bool tiny) {
#endif
}
}
#if defined(_WIN32) || defined(_WIN64)
#elif defined(__APPLE__) || defined(__MACH__)
#include <mach/mach_time.h>
#elif defined(__linux__) || defined(__gnu_linux__)
static __cold clockid_t choise_monoclock() {
struct timespec probe;
#if defined(CLOCK_BOOTTIME)
if (clock_gettime(CLOCK_BOOTTIME, &probe) == 0)
return CLOCK_BOOTTIME;
#elif defined(CLOCK_MONOTONIC_RAW)
if (clock_gettime(CLOCK_MONOTONIC_RAW, &probe) == 0)
return CLOCK_MONOTONIC_RAW;
#elif defined(CLOCK_MONOTONIC_COARSE)
if (clock_gettime(CLOCK_MONOTONIC_COARSE, &probe) == 0)
return CLOCK_MONOTONIC_COARSE;
#endif
return CLOCK_MONOTONIC;
}
#endif
uint64_t mdbx_osal_16dot16_to_monotime(uint32_t seconds_16dot16) {
#if defined(_WIN32) || defined(_WIN64)
static LARGE_INTEGER performance_frequency;
if (performance_frequency.QuadPart == 0)
QueryPerformanceFrequency(&performance_frequency);
const uint64_t ratio = performance_frequency.QuadPart;
#elif defined(__APPLE__) || defined(__MACH__)
static uint64_t ratio;
if (!ratio) {
mach_timebase_info_data_t ti;
mach_timebase_info(&ti);
ratio = UINT64_C(1000000000) * ti.denom / ti.numer;
}
#else
const uint64_t ratio = UINT64_C(1000000000);
#endif
return (ratio * seconds_16dot16 + 32768) >> 16;
}
uint64_t mdbx_osal_monotime(void) {
#if defined(_WIN32) || defined(_WIN64)
LARGE_INTEGER counter;
counter.QuadPart = 0;
QueryPerformanceCounter(&counter);
return counter.QuadPart;
#elif defined(__APPLE__) || defined(__MACH__)
return mach_absolute_time();
#else
#if defined(__linux__) || defined(__gnu_linux__)
static clockid_t posix_clockid = -1;
if (unlikely(posix_clockid < 0))
posix_clockid = choise_monoclock();
#elif defined(CLOCK_MONOTONIC)
#define posix_clockid CLOCK_MONOTONIC
#else
#define posix_clockid CLOCK_REALTIME
#endif
struct timespec ts;
if (unlikely(clock_gettime(posix_clockid, &ts) != 0)) {
ts.tv_nsec = 0;
ts.tv_sec = 0;
}
return ts.tv_sec * UINT64_C(1000000000) + ts.tv_nsec;
#endif
}