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ffmpeg: Ignore SIGPIPE

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On systems which deliver SIGPIPE (Unices), a broken pipe will currently
result in the immediate termination of the ffmpeg process (the default
disposition as required by POSIX).  This is undesirable, because while
the broken pipe is likely fatal to useful cleanup of whatever component
is writing to it, there might be other components which can do useful
cleanup - for example, a muxer on another stream may still need to write
indexes to complete a file.  Therefore, set the signal disposition for
SIGPIPE to ignore the signal - the call which caused the signal will
fail with EPIPE and the error will be propagated upwards like any other
I/O failure on a single stream.
This commit is contained in:
Mark Thompson 2018-01-18 23:24:05 +00:00
parent 04e4ab44d7
commit 74cf4a75f7
1 changed files with 3 additions and 0 deletions
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fftools/ffmpeg.c
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@ -406,6 +406,9 @@ void term_init(void)
#ifdef SIGXCPU
signal(SIGXCPU, sigterm_handler);
#endif
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN); /* Broken pipe (POSIX). */
#endif
#if HAVE_SETCONSOLECTRLHANDLER
SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
#endif