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mdbx: refine POSIX-options detection.

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This commit is contained in:
Leonid Yuriev
2019-11-08 16:57:54 +03:00
parent 51440b5542
commit 6a7499c8fc
2 changed files with 10 additions and 12 deletions
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19
src/elements/internals.h
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@@ -207,20 +207,17 @@
#define MDBX_USE_MUTEXES -1 /* Windows don't support POSIX */
#else
#ifndef MDBX_USE_MUTEXES
#if defined(__linux__) || defined(__gnu_linux__) || defined(__FreeBSD__) || \
defined(__APPLE__) || \
(defined(_POSIX_THREAD_PROCESS_SHARED) && \
_POSIX_THREAD_PROCESS_SHARED > 0)
#if defined(_POSIX_THREAD_PROCESS_SHARED) && \
_POSIX_THREAD_PROCESS_SHARED >= 200112L && !defined(__FreeBSD__)
/* Some platforms define the EOWNERDEAD error code even though they
* don't support Robust Mutexes. If doubt compile with -MDBX_USE_MUTEXES=1. */
#if defined(EOWNERDEAD) && _POSIX_C_SOURCE >= 200809L && \
(!defined(__GLIBC__) || /* LY: glibc before 2.10 has a troubles with \
Robust mutexes. */ \
__GLIBC_PREREQ(2, 10)) && \
(defined(PTHREAD_MUTEX_ROBUST) || defined(PTHREAD_MUTEX_ROBUST_NP) || \
defined(PTHREAD_MUTEX_STALLED_NP) || defined(__GLIBC__) || \
(!defined(__ANDROID__) && !defined(__APPLE__)))
#if defined(EOWNERDEAD) && _POSIX_THREAD_PROCESS_SHARED >= 200809L && \
(defined(_POSIX_THREAD_ROBUST_PRIO_INHERIT) || \
defined(_POSIX_THREAD_ROBUST_PRIO_PROTECT) || \
defined(PTHREAD_MUTEX_ROBUST) || defined(PTHREAD_MUTEX_ROBUST_NP)) && \
(!defined(__GLIBC__) || \
__GLIBC_PREREQ(2, 10) /* troubles with Robust mutexes before 2.10 */)
#define MDBX_USE_MUTEXES 2 /* use robust shared pthread mutexes */
#else
#define MDBX_USE_MUTEXES 1 /* use shared pthread mutexes */