mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
c9fecf3a55
- You can now run `make -j8 toolchain` on Windows - You can now run `make -j` on MacOS ARM64 and BSD OSes - You can now use our Emacs dev environment on MacOS/Windows - Fix bug where the x16 register was being corrupted by --ftrace - The programs under build/bootstrap/ are updated as fat binaries - The Makefile now explains how to download cosmocc-0.0.12 toolchain - The build scripts under bin/ now support "cosmo" branded toolchains - stat() now goes faster on Windows (shaves 100ms off `make` latency) - Code cleanup and added review on the Windows signal checking code - posix_spawnattr_setrlimit() now works around MacOS ARM64 bugs - Landlock Make now favors posix_spawn() on non-Linux/OpenBSD - posix_spawn() now has better --strace logging on Windows - fstatat() can now avoid EACCES in more cases on Windows - fchmod() can now change the readonly bit on Windows
73 lines
3.5 KiB
C
73 lines
3.5 KiB
C
/*-*- 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 2023 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/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/sigset.internal.h"
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#include "libc/calls/syscall_support-nt.internal.h"
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#include "libc/errno.h"
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#include "libc/intrin/atomic.h"
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#include "libc/nt/enum/wait.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/synchronization.h"
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#include "libc/sysv/errfuns.h"
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#include "libc/thread/posixthread.internal.h"
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#include "libc/thread/thread.h"
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#include "libc/thread/tls.h"
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#ifdef __x86_64__
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static textwindows int _park_thread(uint32_t msdelay, sigset_t waitmask,
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bool restartable) {
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int rc;
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int64_t sem;
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sigset_t om;
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uint32_t wi;
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struct PosixThread *pt;
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pt = _pthread_self();
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pt->pt_flags &= ~PT_RESTARTABLE;
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if (restartable) pt->pt_flags |= PT_RESTARTABLE;
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pt->pt_semaphore = sem = CreateSemaphore(0, 0, 1, 0);
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pthread_cleanup_push((void *)CloseHandle, (void *)sem);
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atomic_store_explicit(&pt->pt_blocker, PT_BLOCKER_SEM, memory_order_release);
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om = __sig_beginwait(waitmask);
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if ((rc = _check_signal(restartable)) != -1) {
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if ((wi = WaitForSingleObject(sem, msdelay)) != -1u) {
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if (restartable && !(pt->pt_flags & PT_RESTARTABLE)) rc = eintr();
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rc |= _check_signal(restartable);
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} else {
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rc = __winerr();
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}
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}
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__sig_finishwait(om);
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atomic_store_explicit(&pt->pt_blocker, PT_BLOCKER_CPU, memory_order_release);
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pt->pt_flags &= ~PT_RESTARTABLE;
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pthread_cleanup_pop(true);
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pt->pt_semaphore = 0;
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return rc;
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}
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textwindows int _park_norestart(uint32_t msdelay, sigset_t waitmask) {
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return _park_thread(msdelay, waitmask, false);
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}
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textwindows int _park_restartable(uint32_t msdelay, sigset_t waitmask) {
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return _park_thread(msdelay, waitmask, true);
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}
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#endif /* __x86_64__ */
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