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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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4
libc/stdio/getrandom.c
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@ -176,7 +176,9 @@ static ssize_t GetDevUrandom(char *p, size_t n) {
ssize_t __getrandom(void *p, size_t n, unsigned f) {
ssize_t rc;
if (IsWindows()) {
if (_check_interrupts(true, 0)) return -1;
if (_check_interrupts(kSigOpRestartable, 0)) {
return -1;
}
rc = RtlGenRandom(p, n) ? n : __winerr();
} else if (have_getrandom) {
if (IsXnu() || IsOpenbsd()) {