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mdbx: restore SIGPIPE hushing in the db-copy-thread.

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This commit is contained in:
Leo Yuriev 2017-05-31 14:04:40 +03:00
parent e7ee0bc762
commit 98a8fbdc7a
1 changed files with 21 additions and 2 deletions
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23
src/mdbx.c
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@ -8491,6 +8491,16 @@ static THREAD_RESULT __cold THREAD_CALL mdbx_env_copythr(void *arg) {
mdbx_copy *my = arg;
char *ptr;
int toggle = 0, wsize;
int rc;
#if defined(SIGPIPE) && !defined(_WIN32) && !defined(_WIN64)
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGPIPE);
rc = pthread_sigmask(SIG_BLOCK, &set, NULL);
if (rc != 0)
my->mc_error = rc;
#endif
mdbx_condmutex_lock(&my->mc_condmutex);
while (!my->mc_error) {
@ -8502,9 +8512,18 @@ static THREAD_RESULT __cold THREAD_CALL mdbx_env_copythr(void *arg) {
ptr = my->mc_wbuf[toggle];
again:
if (wsize > 0 && !my->mc_error) {
int rc = mdbx_write(my->mc_fd, ptr, wsize);
if (rc != MDBX_SUCCESS)
rc = mdbx_write(my->mc_fd, ptr, wsize);
if (rc != MDBX_SUCCESS) {
#if defined(SIGPIPE) && !defined(_WIN32) && !defined(_WIN64)
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);
}
#endif
my->mc_error = rc;
}
}
/* If there's an overflow page tail, write it too */