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ITS#8504 Fix prev commit: mc_error, #ifdef SIGPIPE

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Never clear mc_error, we could lose a failure in the other thread.
This commit is contained in:
Hallvard Furuseth 2016-10-20 09:51:22 +02:00
parent 894e88bf89
commit bb08f63833
1 changed files with 9 additions and 6 deletions
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15
libraries/liblmdb/mdb.c
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@ -8996,17 +8996,17 @@ mdb_env_copythr(void *arg)
#define DO_WRITE(rc, fd, ptr, w2, len) rc = WriteFile(fd, ptr, w2, &len, NULL)
#else
int len;
sigset_t set;
#define DO_WRITE(rc, fd, ptr, w2, len) len = write(fd, ptr, w2); rc = (len >= 0)
#ifdef SIGPIPE
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGPIPE);
if ((rc = pthread_sigmask(SIG_BLOCK, &set, NULL)) != 0)
my->mc_error = rc;
#endif
#endif
pthread_mutex_lock(&my->mc_mutex);
#ifndef _WIN32
my->mc_error = pthread_sigmask(SIG_BLOCK, &set, NULL);
#endif
for(;;) {
while (!my->mc_new)
pthread_cond_wait(&my->mc_cond, &my->mc_mutex);
@ -9020,8 +9020,11 @@ again:
DO_WRITE(rc, my->mc_fd, ptr, wsize, len);
if (!rc) {
rc = ErrCode();
#ifndef _WIN32
#if defined(SIGPIPE) && !defined(_WIN32)
if (rc == EPIPE) {
/* Collect the pending SIGPIPE, otherwise at least OS X
* gives it to the process on thread-exit (ITS#8504).
*/
int tmp;
sigwait(&set, &tmp);
}