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Make forking off threads reliable on Windows

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This change makes posix_spawn_test no longer flaky on Windows, by (1)
fixing a race condition in wait(), and (2) removing a misguided vfork
implementation which was letting Windows bypass pthread_atfork().
This commit is contained in:
Justine Tunney 2023-07-30 08:55:01 -07:00
parent 2ebc5781a1
commit 58352df0a4
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GPG key ID: BE714B4575D6E328
30 changed files with 230 additions and 187 deletions
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2
libc/calls/tcdrain.c
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@ -32,7 +32,7 @@
static dontinline textwindows int sys_tcdrain_nt(int fd) {
if (!__isfdopen(fd)) return ebadf();
if (_check_interrupts(false, g_fds.p)) return -1;
if (_check_interrupts(0, g_fds.p)) return -1;
if (!FlushFileBuffers(g_fds.p[fd].handle)) return __winerr();
return 0;
}