mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
f7ff77d865
- Invent iso8601us() for faster timestamps - Improve --strace descriptions of sigset_t - Rebuild the Landlock Make bootstrap binary - Introduce MODE=sysv for non-Windows builds - Permit OFD fcntl() locks under pledge(flock) - redbean can now protect your kernel from ddos - Have vfork() fallback to sys_fork() not fork() - Change kmalloc() to not die when out of memory - Improve documentation for some termios functions - Rewrite putenv() and friends to conform to POSIX - Fix linenoise + strace verbosity issue on Windows - Fix regressions in our ability to show backtraces - Change redbean SetHeader() to no-op if value is nil - Improve fcntl() so SQLite locks work in non-WAL mode - Remove some unnecessary work during fork() on Windows - Create redbean-based SSL reverse proxy for IPv4 TurfWar - Fix ape/apeinstall.sh warning when using non-bash shells - Add ProgramTrustedIp(), and IsTrustedIp() APIs to redbean - Support $PWD, $UID, $GID, and $EUID in command interpreter - Introduce experimental JTqFpD APE prefix for non-Windows builds - Invent blackhole daemon for firewalling IP addresses via UNIX named socket - Add ProgramTokenBucket(), AcquireToken(), and CountTokens() APIs to redbean
91 lines
3.5 KiB
C
91 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 2022 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/calls.h"
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#include "libc/errno.h"
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#include "libc/intrin/bits.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/macros.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/testlib/testlib.h"
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#include "libc/thread/thread.h"
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#define PROCESSES 8
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#define ITERATIONS 100000
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struct SharedMemory {
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pthread_mutex_t mutex;
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volatile long x;
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} * shm;
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void Worker(void) {
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long t;
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for (int i = 0; i < ITERATIONS; ++i) {
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pthread_mutex_lock(&shm->mutex);
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t = shm->x;
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t += 1;
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shm->x = t;
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pthread_mutex_unlock(&shm->mutex);
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}
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}
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TEST(lockipc, mutex) {
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int e, rc, ws, pid;
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// create shared memory
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shm = _mapshared(FRAMESIZE);
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// create shared mutex
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pthread_mutexattr_t mattr;
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pthread_mutexattr_init(&mattr);
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pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_NORMAL);
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pthread_mutexattr_setpshared(&mattr, PTHREAD_PROCESS_SHARED);
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pthread_mutex_init(&shm->mutex, &mattr);
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pthread_mutexattr_destroy(&mattr);
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// create processes
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for (int i = 0; i < PROCESSES; ++i) {
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ASSERT_NE(-1, (rc = fork()));
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if (!rc) {
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Worker();
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_Exit(0);
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}
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}
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// wait for processes to finish
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for (;;) {
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e = errno;
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if ((pid = waitpid(0, &ws, 0)) != -1) {
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if (WIFSIGNALED(ws)) {
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kprintf("process %d terminated with %G\n", pid, WTERMSIG(ws));
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testlib_incrementfailed();
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} else if (WEXITSTATUS(ws)) {
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kprintf("process %d exited with %d\n", pid, WEXITSTATUS(ws));
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testlib_incrementfailed();
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}
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} else {
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ASSERT_EQ(ECHILD, errno);
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errno = e;
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break;
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}
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}
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EXPECT_EQ(PROCESSES * ITERATIONS, shm->x);
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ASSERT_EQ(0, pthread_mutex_destroy(&shm->mutex));
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ASSERT_SYS(0, 0, munmap(shm, FRAMESIZE));
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}
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