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Improve aarch64 native support some more

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This change introduces partial support for automating remote testing of
aarch64 binaries on Raspberry Pi and Apple Silicon.
This commit is contained in:
Justine Tunney 2023-06-04 08:19:45 -07:00
parent fc34ba2596
commit 4aa1d09b9e
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GPG key ID: BE714B4575D6E328
20 changed files with 185 additions and 82 deletions
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10
libc/thread/pthread_atfork.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/state.internal.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/kmalloc.h"
@ -58,13 +59,15 @@ static void _pthread_onfork(int i) {
void _pthread_onfork_prepare(void) {
_pthread_onfork(0);
pthread_spin_lock(&_pthread_lock);
__kmalloc_lock();
__fds_lock();
__mmi_lock();
__kmalloc_lock();
}
void _pthread_onfork_parent(void) {
__mmi_unlock();
__kmalloc_unlock();
__mmi_unlock();
__fds_unlock();
pthread_spin_unlock(&_pthread_lock);
_pthread_onfork(1);
}
@ -82,11 +85,12 @@ void _pthread_onfork_child(void) {
atomic_store_explicit(&pt->cancelled, false, memory_order_relaxed);
// wipe core runtime locks
__kmalloc_unlock();
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&__mmi_lock_obj, &attr);
pthread_mutex_init(&__fds_lock_obj, &attr);
pthread_spin_init(&_pthread_lock, 0);
__kmalloc_unlock();
// call user-supplied forked child callbacks
_pthread_onfork(2);