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send-pack.c: move async's #ifdef NO_PTHREADS back to run-command.c

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On systems that do not support multithread, start_async() is
implemented with fork(). This implementation details unfortunately
leak out at least in send-pack.c [1].

To keep the code base clean of NO_PTHREADS, move the this #ifdef back
to run-command.c. The new wrapper function async_with_fork() at least
helps suggest that this special "close()" is related to async in fork
mode.

[1] 09c9957cf7 (send-pack: avoid deadlock when pack-object dies early
    - 2011-04-25)

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2018-11-03 09:48:39 +01:00
committed by Junio C Hamano
parent 10bc232d0f
commit c0e40a2d66
3 changed files with 12 additions and 3 deletions
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5
send-pack.c
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@ -203,9 +203,8 @@ static int receive_status(int in, struct ref *refs)
static int sideband_demux(int in, int out, void *data)
{
int *fd = data, ret;
#ifdef NO_PTHREADS
close(fd[1]);
#endif
if (async_with_fork())
close(fd[1]);
ret = recv_sideband("send-pack", fd[0], out);
close(out);
return ret;