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Fix a little race condition that could cause a crash if two channels had MOH

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stopped at the same time that were using a class that had been marked for
deletion when its use count hits zero.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@79792 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2007-08-16 22:32:33 +00:00
parent 3301d70848
commit e24788d06f
1 changed files with 1 additions and 3 deletions
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4
res/res_musiconhold.c
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@@ -202,8 +202,6 @@ static void moh_files_release(struct ast_channel *chan, void *data)
{
struct moh_files_state *state = chan->music_state;
ast_atomic_fetchadd_int(&state->class->inuse, -1);
if (chan && state) {
if (chan->stream) {
ast_closestream(chan->stream);
@@ -217,7 +215,7 @@ static void moh_files_release(struct ast_channel *chan, void *data)
}
state->save_pos = state->pos;
}
if (state->class->delete && !state->class->inuse)
if (state->class->delete && ast_atomic_dec_and_test(&state->class->inuse))
ast_moh_destroy_one(state->class);
}