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mdbx: add MDBX_OSX_SPEED_OR_DURABILITY build-time #define for MacOS.

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This commit is contained in:
Leonid Yuriev 2019-08-20 02:45:03 +03:00
parent ccbf3a2bcf
commit 657d37c9e3
2 changed files with 15 additions and 2 deletions
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6
src/bits.h
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@ -23,6 +23,12 @@
# undef NDEBUG
#endif
#define MDBX_OSX_WANNA_DURABILITY 0 /* using fcntl(F_FULLFSYNC) with 5-10 times slowdown */
#define MDBX_OSX_WANNA_SPEED 1 /* using fsync() with chance of data lost on power failure */
#ifndef MDBX_OSX_SPEED_OR_DURABILITY
#define MDBX_OSX_SPEED_OR_DURABILITY MDBX_OSX_WANNA_DURABILITY
#endif
/*----------------------------------------------------------------------------*/
/* Should be defined before any includes */

11
src/osal.c
View File

@ -668,7 +668,8 @@ int mdbx_filesync(mdbx_filehandle_t fd, enum mdbx_syncmode_bits mode_bits) {
: GetLastError();
#else
#ifdef __APPLE__
#if defined(__APPLE__) && \
MDBX_OSX_SPEED_OR_DURABILITY == MDBX_OSX_WANNA_DURABILITY
if (mode_bits & MDBX_SYNC_IODQ)
return likely(fcntl(fd, F_FULLFSYNC) != -1) ? MDBX_SUCCESS : errno;
#endif /* MacOS */
@ -788,7 +789,13 @@ int mdbx_msync(mdbx_mmap_t *map, size_t offset, size_t length, int async) {
return GetLastError();
#else
const int mode = async ? MS_ASYNC : MS_SYNC;
return (msync(ptr, length, mode) == 0) ? MDBX_SUCCESS : errno;
int rc = (msync(ptr, length, mode) == 0) ? MDBX_SUCCESS : errno;
#if defined(__APPLE__) && \
MDBX_OSX_SPEED_OR_DURABILITY == MDBX_OSX_WANNA_DURABILITY
if (rc == MDBX_SUCCESS && mode == MS_SYNC)
rc = likely(fcntl(map->fd, F_FULLFSYNC) != -1) ? MDBX_SUCCESS : errno;
#endif /* MacOS */
return rc;
#endif
}