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Fixes ast_rwlock_timed[rd|wr]lock for BSD and variants.

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The original implementations simply wrap pthread functions, which take
absolute time as an argument. The spinlock version for systems without
those functions treated the argument as a delta. This patch fixes the
spinlock version to be consistent with the pthread version.

(closes issue ASTERISK-20240)
Reported by: Egor Gorlin
Patches:
	lock.c.patch uploaded by Egor Gorlin (license 6416)
........

Merged revisions 371718 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@371720 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
David M. Lee
2012-08-27 16:55:39 +00:00
parent a97c6e85f8
commit 8a2234472b
1 changed files with 6 additions and 6 deletions
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12
main/lock.c
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@@ -1141,13 +1141,13 @@ int __ast_rwlock_timedrdlock(const char *filename, int line, const char *func, a
res = pthread_rwlock_timedrdlock(&t->lock, abs_timeout);
#else
do {
struct timeval _start = ast_tvnow(), _diff;
struct timeval _now;
for (;;) {
if (!(res = pthread_rwlock_tryrdlock(&t->lock))) {
break;
}
_diff = ast_tvsub(ast_tvnow(), _start);
if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) {
_now = ast_tvnow();
if (_now.tv_sec > abs_timeout->tv_sec || (_now.tv_sec == abs_timeout->tv_sec && _now.tv_usec * 1000 > abs_timeout->tv_nsec)) {
break;
}
usleep(1);
@@ -1244,13 +1244,13 @@ int __ast_rwlock_timedwrlock(const char *filename, int line, const char *func, a
res = pthread_rwlock_timedwrlock(&t->lock, abs_timeout);
#else
do {
struct timeval _start = ast_tvnow(), _diff;
struct timeval _now;
for (;;) {
if (!(res = pthread_rwlock_trywrlock(&t->lock))) {
break;
}
_diff = ast_tvsub(ast_tvnow(), _start);
if (_diff.tv_sec > abs_timeout->tv_sec || (_diff.tv_sec == abs_timeout->tv_sec && _diff.tv_usec * 1000 > abs_timeout->tv_nsec)) {
_now = ast_tvnow();
if (_now.tv_sec > abs_timeout->tv_sec || (_now.tv_sec == abs_timeout->tv_sec && _now.tv_usec * 1000 > abs_timeout->tv_nsec)) {
break;
}
usleep(1);