On 29.10.2015 09:38, Tobias Rapp wrote:
Attached patch fixes file lock issues in my Windows application when a
child process is started with handle inheritance enabled (standard
input/output redirection) while a FFmpeg transcoding is running in the
parent process.
BTW: It would be great if the patch could also be applied to the 2.7/2.8
release branches.
Forgot to add links relevant to the subject.
[1] https://msdn.microsoft.com/en-us/library/w7sa2b22.aspx
Describes the _wsopen() function and the O_NOINHERIT flag. File handles
opened by _wsopen() are inheritable by default.
[2]
https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858%28v=vs.85%29.aspx
Describes the CreateFile() function. Not directly relevant here, often
used in cases outside of C/libc. Opens file without inheritance by
default (lpSecurityAttributes is NULL).
[3]
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682425%28v=vs.85%29.aspx
Describes handle inheritance when creating new processes. Handle
inheritance must be enabled (bInheritHandles = TRUE) e.g. when you want
to pass handles for stdin/stdout via lpStartupInfo.
Regards,
Tobias
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