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This commit fixes the following issues:

Browse Source 
- Deadlock in ast_write (issue #10406)
- Deadlock in ast_read (issue #10406)
- Possible mutex initialization error in lock.h (issue #10571)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@85158 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2007-10-09 21:55:06 +00:00
parent 474e0e8d12
commit 96d11d3e02
3 changed files with 59 additions and 9 deletions
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17
main/utils.c
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@@ -540,7 +540,7 @@ struct thr_lock_info {
int times_locked;
enum ast_lock_type type;
/*! This thread is waiting on this lock */
unsigned int pending:1;
int pending:2;
} locks[AST_MAX_LOCKS];
/*! This is the number of locks currently held by this thread.
* The index (num_locks - 1) has the info on the last one in the
@@ -636,6 +636,19 @@ void ast_mark_lock_acquired(void)
pthread_mutex_unlock(&lock_info->lock);
}
void ast_mark_lock_failed(void)
{
struct thr_lock_info *lock_info;
if (!(lock_info = ast_threadstorage_get(&thread_lock_info, sizeof(*lock_info))))
return;
pthread_mutex_lock(&lock_info->lock);
lock_info->locks[lock_info->num_locks - 1].pending = -1;
lock_info->locks[lock_info->num_locks - 1].times_locked--;
pthread_mutex_unlock(&lock_info->lock);
}
void ast_remove_lock_info(void *lock_addr)
{
struct thr_lock_info *lock_info;
@@ -708,7 +721,7 @@ static int handle_show_locks(int fd, int argc, char *argv[])
pthread_mutex_lock(&lock_info->lock);
for (i = 0; i < lock_info->num_locks; i++) {
ast_cli(fd, "=== ---> %sLock #%d (%s): %s %d %s %s %p (%d)\n",
lock_info->locks[i].pending ? "Waiting for " : "", i,
lock_info->locks[i].pending > 0 ? "Waiting for " : lock_info->locks[i].pending < 0 ? "Tried and failed to get " : "", i,
lock_info->locks[i].file,
locktype2str(lock_info->locks[i].type),
lock_info->locks[i].line_num,