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Make bulk_free() go faster

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This commit is contained in:
Justine Tunney 2024-12-23 20:14:01 -08:00
parent 624573207e
commit c8e10eef30
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GPG key ID: BE714B4575D6E328
13 changed files with 54 additions and 36 deletions
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20
libc/thread/pthread_create.c
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@ -67,7 +67,7 @@ __static_yoink("_pthread_onfork_prepare");
__static_yoink("_pthread_onfork_parent");
__static_yoink("_pthread_onfork_child");
void _pthread_free(struct PosixThread *pt) {
static void _pthread_free(struct PosixThread *pt) {
// thread must be removed from _pthread_list before calling
unassert(dll_is_alone(&pt->list) && &pt->list != _pthread_list);
@ -93,10 +93,13 @@ void _pthread_free(struct PosixThread *pt) {
}
// free heap memory associated with thread
if (pt->pt_flags & PT_OWNSIGALTSTACK)
free(pt->pt_attr.__sigaltstackaddr);
free(pt->pt_tls);
free(pt);
bulk_free(
(void *[]){
pt->pt_flags & PT_OWNSIGALTSTACK ? pt->pt_attr.__sigaltstackaddr : 0,
pt->pt_tls,
pt,
},
3);
}
void _pthread_decimate(void) {
@ -137,7 +140,6 @@ void _pthread_decimate(void) {
}
static int PosixThread(void *arg, int tid) {
void *rc;
struct PosixThread *pt = arg;
// setup scheduling
@ -167,11 +169,11 @@ static int PosixThread(void *arg, int tid) {
} else {
sys_sigprocmask(SIG_SETMASK, &pt->pt_attr.__sigmask, 0);
}
rc = pt->pt_start(pt->pt_arg);
void *ret = pt->pt_start(pt->pt_val);
// ensure pthread_cleanup_pop(), and pthread_exit() popped cleanup
unassert(!pt->pt_cleanup);
// calling pthread_exit() will either jump back here, or call exit
pthread_exit(rc);
pthread_exit(ret);
}
// avoid signal handler being triggered after we trash our own stack
@ -196,7 +198,7 @@ static errno_t pthread_create_impl(pthread_t *thread,
dll_init(&pt->list);
pt->pt_locale = &__global_locale;
pt->pt_start = start_routine;
pt->pt_arg = arg;
pt->pt_val = arg;
// create thread local storage memory
if (!(pt->pt_tls = _mktls(&pt->tib))) {