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Make fixes and improvements

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- clock_nanosleep() is now much faster on OpenBSD and NetBSD
- Thread joining is now much faster on NetBSD
- FreeBSD timestamps are now more accurate
- Thread spawning now goes faster on XNU
- Clean up the clone() code
This commit is contained in:
Justine Tunney 2022-11-08 10:09:47 -08:00
parent aee50b1327
commit b407327972
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GPG key ID: BE714B4575D6E328
47 changed files with 645 additions and 306 deletions
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14
libc/thread/spawn.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
#include "libc/runtime/clone.internal.h"
@ -92,6 +93,7 @@ static int Spawner(void *arg, int tid) {
* @return 0 on success, or -1 w/ errno
*/
int _spawn(int fun(void *, int), void *arg, struct spawn *opt_out_thread) {
errno_t rc;
struct spawn *th, ths;
struct spawner *spawner;
__require_tls();
@ -122,11 +124,13 @@ int _spawn(int fun(void *, int), void *arg, struct spawn *opt_out_thread) {
spawner = malloc(sizeof(struct spawner));
spawner->fun = fun;
spawner->arg = arg;
if (clone(Spawner, th->stk, GetStackSize() - 16 /* openbsd:stackbound */,
CLONE_VM | CLONE_THREAD | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_SETTID |
CLONE_CHILD_CLEARTID,
spawner, &th->ptid, th->tib, &th->tib->tib_tid) == -1) {
rc = clone(Spawner, th->stk, GetStackSize() - 16 /* openbsd:stackbound */,
CLONE_VM | CLONE_THREAD | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_SETTID |
CLONE_CHILD_CLEARTID,
spawner, &th->ptid, th->tib, &th->tib->tib_tid);
if (rc) {
errno = rc;
_freestack(th->stk);
free(th->tls);
return -1;