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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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52
libc/thread/pthread_getaffinity_np.c
View file

@ -20,6 +20,7 @@
#include "libc/calls/struct/cpuset.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/str/str.h"
@ -33,37 +34,40 @@
* @return 0 on success, or errno on error
* @raise EINVAL if `size` or `bitset` is invalid
* @raise ENOSYS if not Linux, FreeBSD, or NetBSD
* @raise ESRCH if thread isn't alive
*/
errno_t pthread_getaffinity_np(pthread_t thread, size_t size,
cpu_set_t *bitset) {
int tid, rc, e = errno;
tid = ((struct PosixThread *)thread)->tid;
int e, rc, tid;
if (size != sizeof(cpu_set_t)) {
rc = einval();
} else if (IsWindows() || IsMetal() || IsOpenbsd()) {
rc = enosys();
} else if (IsFreebsd()) {
if (!sys_sched_getaffinity_freebsd(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid, 32,
bitset)) {
rc = 32;
if (!(rc = pthread_getunique_np(thread, &tid))) {
e = errno;
if (size != sizeof(cpu_set_t)) {
rc = einval();
} else if (IsWindows() || IsMetal() || IsOpenbsd()) {
rc = enosys();
} else if (IsFreebsd()) {
if (!sys_sched_getaffinity_freebsd(CPU_LEVEL_WHICH, CPU_WHICH_TID, tid,
32, bitset)) {
rc = 32;
} else {
rc = -1;
}
} else if (IsNetbsd()) {
if (!sys_sched_getaffinity_netbsd(tid, 0, 32, bitset)) {
rc = 32;
} else {
rc = -1;
}
} else {
rc = -1;
rc = sys_sched_getaffinity(tid, size, bitset);
}
} else if (IsNetbsd()) {
if (!sys_sched_getaffinity_netbsd(tid, 0, 32, bitset)) {
rc = 32;
} else {
rc = -1;
if (rc > 0) {
if (rc < size) {
bzero((char *)bitset + rc, size - rc);
}
rc = 0;
}
} else {
rc = sys_sched_getaffinity(tid, size, bitset);
}
if (rc > 0) {
if (rc < size) {
bzero((char *)bitset + rc, size - rc);
}
rc = 0;
}
STRACE("pthread_getaffinity_np(%d, %'zu, %p) → %s", tid, size, bitset,