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https://github.com/jart/cosmopolitan.git
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Make more improvements to threading support
- fix rare thread exit race condition on openbsd - pthread_getattr_np() now supplies detached status - child threads may now pthread_join() the main thread - introduce sigandset(), sigorset(), and sigisemptyset() - introduce pthread_cleanup_push() and pthread_cleanup_pop()
This commit is contained in:
Justine Tunney
parent
38df0a4186
commit
4a6fd3d910
52 changed files with 586 additions and 241 deletions
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@ -16,19 +16,24 @@
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/intrin/strace.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asmflag.h"
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#include "libc/intrin/promises.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/nt/thread.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/thread/tls.h"
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__msabi extern typeof(ExitThread) *const __imp_ExitThread;
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/**
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* Terminates thread with raw system call.
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*
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* The function you want is pthread_exit(). If you call this function
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* whilst using the pthreads then your joiners might not get woken up
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* on non-Linux platforms where we zero __get_tls()->tib_tid manually
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*
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* If this is the main thread, or an orphaned child thread, then this
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* function is equivalent to exiting the process; however, `rc` shall
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* only be reported to the parent process on Linux, FreeBSD & Windows
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36
libc/intrin/sigandset.c
Normal file
36
libc/intrin/sigandset.c
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@ -0,0 +1,36 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/sigset.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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/**
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* Bitwise ANDs two signal sets.
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*
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* @return 0 on success, or -1 w/ errno
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* @asyncsignalsafe
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* @vforksafe
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*/
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int sigandset(sigset_t *set, const sigset_t *x, const sigset_t *y) {
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int i;
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for (i = 0; i < ARRAYLEN(set->__bits); ++i) {
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set->__bits[i] = x->__bits[i] & y->__bits[i];
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}
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return 0;
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}
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38
libc/intrin/sigisemptyset.c
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38
libc/intrin/sigisemptyset.c
Normal file
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@ -0,0 +1,38 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/sigset.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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/**
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* Determines if signal set is empty.
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*
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* @return 1 if empty, 0 if non-empty, or -1 w/ errno
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* @asyncsignalsafe
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* @vforksafe
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*/
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int sigisemptyset(const sigset_t *set) {
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int i;
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for (i = 0; i < ARRAYLEN(set->__bits); ++i) {
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if (set->__bits[i]) {
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return 0;
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}
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}
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return 1;
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}
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36
libc/intrin/sigorset.c
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36
libc/intrin/sigorset.c
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@ -0,0 +1,36 @@
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/sigset.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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/**
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* Bitwise ORs two signal sets.
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*
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* @return 0 on success, or -1 w/ errno
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* @asyncsignalsafe
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* @vforksafe
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*/
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int sigorset(sigset_t *set, const sigset_t *x, const sigset_t *y) {
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int i;
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for (i = 0; i < ARRAYLEN(set->__bits); ++i) {
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set->__bits[i] = x->__bits[i] | y->__bits[i];
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}
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return 0;
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}
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