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Rewrite Windows poll()

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We can now await signals, files, pipes, and console simultaneously. This
change also gives a deeper review and testing to changes made yesterday.
This commit is contained in:
Justine Tunney 2024-09-10 18:59:06 -07:00
parent cceddd21b2
commit fbdf9d028c
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GPG key ID: BE714B4575D6E328
15 changed files with 425 additions and 191 deletions
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11
libc/thread/pthread_cond_broadcast.c
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@ -23,6 +23,10 @@
#include "third_party/nsync/cv.h"
#include "third_party/nsync/futex.internal.h"
__static_yoink("nsync_mu_lock");
__static_yoink("nsync_mu_unlock");
__static_yoink("nsync_mu_trylock");
/**
* Wakes all threads waiting on condition, e.g.
*
@ -43,9 +47,14 @@
errno_t pthread_cond_broadcast(pthread_cond_t *cond) {
#if PTHREAD_USE_NSYNC
// do nothing if pthread_cond_timedwait() hasn't been called yet
// this is because we dont know for certain if nsync use is safe
if (!atomic_load_explicit(&cond->_waited, memory_order_acquire))
return 0;
// favor *NSYNC if this is a process private condition variable
// if using Mike Burrows' code isn't possible, use a naive impl
if (!cond->_pshared && !IsXnuSilicon()) {
if (!cond->_footek) {
nsync_cv_broadcast((nsync_cv *)cond);
return 0;
}