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mdbx: portability - support for musl libc.

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Change-Id: Ida8a3bd9da896bc6c00bef931ddf3dce65bef8eb
This commit is contained in:
Leonid Yuriev 2019-07-13 23:25:34 +03:00
parent f2c3fcb6a4
commit 97e4f66d16
2 changed files with 14 additions and 9 deletions
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21
src/lck-posix.c
View File

@ -22,7 +22,8 @@
#if defined(EOWNERDEAD) && \
!defined(__ANDROID__) /* LY: glibc before 2.10 has a troubles \
with Robust Mutex too. */ \
&& __GLIBC_PREREQ(2, 10)
&& (!defined(__GLIBC__) || __GLIBC_PREREQ(2, 10) || \
_POSIX_C_SOURCE >= 200809L)
#define MDBX_USE_ROBUST 1
#else
#define MDBX_USE_ROBUST 0
@ -141,10 +142,11 @@ int __cold mdbx_lck_init(MDBX_env *env) {
goto bailout;
#if MDBX_USE_ROBUST
#if __GLIBC_PREREQ(2, 12)
rc = pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST);
#else
#if defined(__GLIBC__) && !__GLIBC_PREREQ(2, 12) && \
!defined(pthread_mutex_consistent) && _POSIX_C_SOURCE < 200809L
rc = pthread_mutexattr_setrobust_np(&ma, PTHREAD_MUTEX_ROBUST_NP);
#else
rc = pthread_mutexattr_setrobust(&ma, PTHREAD_MUTEX_ROBUST);
#endif
if (rc)
goto bailout;
@ -294,10 +296,6 @@ int __cold mdbx_lck_seize(MDBX_env *env) {
return internal_seize_lck(env->me_lfd);
}
#if !__GLIBC_PREREQ(2, 12) && !defined(pthread_mutex_consistent)
#define pthread_mutex_consistent(mutex) pthread_mutex_consistent_np(mutex)
#endif
static int __cold mdbx_mutex_failed(MDBX_env *env, pthread_mutex_t *mutex,
const int err) {
int rc = err;
@ -321,7 +319,12 @@ static int __cold mdbx_mutex_failed(MDBX_env *env, pthread_mutex_t *mutex,
int check_rc = mdbx_reader_check0(env, rlocked, NULL);
check_rc = (check_rc == MDBX_SUCCESS) ? MDBX_RESULT_TRUE : check_rc;
#if defined(__GLIBC__) && !__GLIBC_PREREQ(2, 12) && \
!defined(pthread_mutex_consistent) && _POSIX_C_SOURCE < 200809L
int mreco_rc = pthread_mutex_consistent_np(mutex);
#else
int mreco_rc = pthread_mutex_consistent(mutex);
#endif
check_rc = (mreco_rc == 0) ? check_rc : mreco_rc;
if (unlikely(mreco_rc))
@ -332,6 +335,8 @@ static int __cold mdbx_mutex_failed(MDBX_env *env, pthread_mutex_t *mutex,
pthread_mutex_unlock(mutex);
return rc;
}
#else
(void)mutex;
#endif /* MDBX_USE_ROBUST */
mdbx_error("mutex (un)lock failed, %s", mdbx_strerror(err));

2
src/mdbx.c
View File

@ -1331,7 +1331,7 @@ const char *__cold mdbx_strerror_r(int errnum, char *buf, size_t buflen) {
errnum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, (DWORD)buflen,
NULL);
return size ? buf : NULL;
#elif defined(_GNU_SOURCE)
#elif defined(_GNU_SOURCE) && defined(__GLIBC__)
/* GNU-specific */
msg = strerror_r(errnum, buf, buflen);
#elif (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)