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Fix a race condition where the generator can go away

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(closes issue #12175, reported by edantie, patched by me)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@107099 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2008-03-10 16:58:57 +00:00
parent 2bf8f9fca3
commit 72e4729ad5
1 changed files with 5 additions and 1 deletions
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6
main/channel.c
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@@ -1560,9 +1560,13 @@ static int generator_force(const void *data)
ast_channel_lock(chan); ast_channel_lock(chan);
tmp = chan->generatordata; tmp = chan->generatordata;
chan->generatordata = NULL; chan->generatordata = NULL;
generate = chan->generator->generate; if (chan->generator)
generate = chan->generator->generate;
ast_channel_unlock(chan); ast_channel_unlock(chan);
if (!tmp || !generate)
return 0;
res = generate(chan, tmp, 0, 160); res = generate(chan, tmp, 0, 160);
chan->generatordata = tmp; chan->generatordata = tmp;