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Implement pthread_atfork()

Browse source 
If threads are being used, then fork() will now acquire and release and
runtime locks so that fork() may be safely used from threads. This also
makes vfork() thread safe, because pthread mutexes will do nothing when
the process is a child of vfork(). More torture tests have been written
to confirm this all works like a charm. Additionally:

- Invent hexpcpy() api
- Rename nsync_malloc_() to kmalloc()
- Complete posix named semaphore implementation
- Make pthread_create() asynchronous signal safe
- Add rm, rmdir, and touch to command interpreter builtins
- Invent sigisprecious() and modify sigset functions to use it
- Add unit tests for posix_spawn() attributes and fix its bugs

One unresolved problem is the reclaiming of *NSYNC waiter memory in the
forked child processes, within apps which have threads waiting on locks
This commit is contained in:
Justine Tunney 2022-10-16 12:05:08 -07:00
parent 64c284003d
commit 60cb435cb4
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
124 changed files with 2169 additions and 718 deletions
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117
test/libc/calls/raise_race_test.c Normal file
View file

@ -0,0 +1,117 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ │
│ libc-test │
│ Copyright © 2005-2013 libc-test AUTHORS │
│ │
│ Permission is hereby granted, free of charge, to any person obtaining │
│ a copy of this software and associated documentation files (the │
│ "Software"), to deal in the Software without restriction, including │
│ without limitation the rights to use, copy, modify, merge, publish, │
│ distribute, sublicense, and/or sell copies of the Software, and to │
│ permit persons to whom the Software is furnished to do so, subject to │
│ the following conditions: │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
│ │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/atomic.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
// libc-test/src/regression/raise-race.c
// commit: 370f78f2c80c64b7b0780a01e672494a26b5678e 2011-03-09
// commit: 0bed7e0acfd34e3fb63ca0e4d99b7592571355a9 2011-03-09
// raise should be robust against async fork in a signal handler
// [jart] i can't believe fork() is async-signal-safe
#define t_error(...) \
do { \
kprintf(__VA_ARGS__); \
++t_status; \
} while (0)
static atomic_int c0;
static atomic_int c1;
static atomic_int child;
static atomic_int t_status;
static void handler0(int sig) {
c0++;
}
static void handler1(int sig) {
c1++;
switch (fork()) {
case 0:
child = 1;
break;
case -1:
t_error("fork failed: %s\n", strerror(errno));
default:
break;
}
}
static void *start(void *arg) {
int i, r, s;
for (i = 0; i < 1000; i++) {
r = raise(SIGRTMIN);
if (r) t_error("raise failed: %s\n", strerror(errno));
}
if (c0 != 1000) {
t_error("lost signals: got %d, wanted 1000 (ischild %d forks %d)\n", c0,
child, c1);
}
if (child) _exit(t_status);
/* make sure we got all pthread_kills, then wait the forked children */
while (c1 < 100) donothing;
for (i = 0; i < 100; i++) {
r = wait(&s);
if (r == -1) {
t_error("wait failed: %s\n", strerror(errno));
} else if (!WIFEXITED(s) || WTERMSIG(s)) {
t_error("child failed: pid:%d status:%d sig:%s\n", r, s,
strsignal(WTERMSIG(s)));
}
}
return 0;
}
TEST(raise, test) {
if (IsNetbsd()) return; // why doesn't it work?
if (IsOpenbsd()) return; // no support for realtime signals yet
if (IsXnu()) return; // no support for realtime signals yet
if (IsWindows()) return; // TODO(jart): why does it exit 128+SIGRTMIN?
void *p;
int r, i, s;
pthread_t t;
if (signal(SIGRTMIN, handler0) == SIG_ERR)
t_error("registering signal handler failed: %s\n", strerror(errno));
if (signal(SIGRTMIN + 1, handler1) == SIG_ERR)
t_error("registering signal handler failed: %s\n", strerror(errno));
r = pthread_create(&t, 0, start, 0);
if (r) t_error("pthread_create failed: %s\n", strerror(r));
for (i = 0; i < 100; i++) {
r = pthread_kill(t, SIGRTMIN + 1);
if (r) t_error("phread_kill failed: %s\n", strerror(r));
}
r = pthread_join(t, &p);
if (r) t_error("pthread_join failed: %s\n", strerror(r));
ASSERT_EQ(0, t_status);
}

6
test/libc/intrin/describesigset_test.c
View file

@ -22,6 +22,12 @@
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/testlib.h"
TEST(DescribeSigset, full) {
sigset_t ss;
sigfillset(&ss);
EXPECT_STREQ("~{}", DescribeSigset(0, &ss));
}
TEST(DescribeSigset, present) {
sigset_t ss;
sigemptyset(&ss);

1
test/libc/intrin/lock_test.c
View file

@ -203,7 +203,6 @@ int main(int argc, char *argv[]) {
ASSERT_EQ(0, pthread_mutex_lock(&mu));
ASSERT_EQ(EDEADLK, pthread_mutex_lock(&mu));
ASSERT_EQ(0, pthread_mutex_unlock(&mu));
ASSERT_EQ(EPERM, pthread_mutex_unlock(&mu));
ASSERT_EQ(0, pthread_mutex_destroy(&mu));
ASSERT_EQ(1, __tls_enabled);

114
test/libc/intrin/pthread_atfork_test.c Normal file
View file

@ -0,0 +1,114 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/intrin/intrin.h"
#include "libc/mem/gc.h"
#include "libc/mem/mem.h"
#include "libc/runtime/internal.h"
#include "libc/stdio/lock.internal.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
#include "third_party/nsync/mu.h"
int Ai;
const char *A[16];
// clang-format off
void prepare1(void) { A[Ai++] = "prepare1"; }
void prepare2(void) { A[Ai++] = "prepare2"; }
void parent1(void) { A[Ai++] = "parent1"; }
void parent2(void) { A[Ai++] = "parent2"; }
void child1(void) { A[Ai++] = "child1"; }
void child2(void) { A[Ai++] = "child2"; }
// clang-format on
void *ForceThreadingMode(void *arg) {
return 0;
}
TEST(pthread_atfork, test) {
int pid;
__enable_threads();
SPAWN(fork);
ASSERT_EQ(0, pthread_atfork(prepare1, parent1, child1));
ASSERT_EQ(0, pthread_atfork(prepare2, parent2, child2));
flockfile(stdout);
SPAWN(fork);
flockfile(stdout);
ASSERT_STREQ("prepare2", A[0]);
ASSERT_STREQ("prepare1", A[1]);
ASSERT_STREQ("child1", A[2]);
ASSERT_STREQ("child2", A[3]);
funlockfile(stdout);
EXITS(0);
funlockfile(stdout);
ASSERT_STREQ("prepare2", A[0]);
ASSERT_STREQ("prepare1", A[1]);
ASSERT_STREQ("parent1", A[2]);
ASSERT_STREQ("parent2", A[3]);
EXITS(0);
}
pthread_mutex_t mu;
void mu_lock(void) {
pthread_mutex_lock(&mu);
}
void mu_unlock(void) {
pthread_mutex_unlock(&mu);
}
void mu_funlock(void) {
pthread_mutex_init(&mu, 0);
}
void *Worker(void *arg) {
for (int i = 0; i < 20; ++i) {
mu_lock();
usleep(20);
mu_unlock();
SPAWN(fork);
mu_lock();
usleep(1);
mu_unlock();
mu_lock();
mu_unlock();
EXITS(0);
mu_lock();
mu_unlock();
}
return 0;
}
TEST(pthread_atfork, torture) {
if (IsWindows()) return; // TODO(jart): why do we get EBADF? it worked before
pthread_mutex_init(&mu, 0);
pthread_atfork(mu_lock, mu_unlock, mu_funlock);
int i, n = 4;
pthread_t *t = _gc(malloc(sizeof(pthread_t) * n));
for (i = 0; i < n; ++i) {
ASSERT_EQ(0, pthread_create(t + i, 0, Worker, 0));
}
for (i = 0; i < n; ++i) {
ASSERT_EQ(0, pthread_join(t[i], 0));
}
}

10
test/libc/intrin/pthread_mutex_lock_test.c
View file

@ -57,6 +57,14 @@ void SetUpOnce(void) {
ASSERT_SYS(0, 0, pledge("stdio rpath", 0));
}
TEST(pthread_mutex_lock, initializer) {
struct sqlite3_mutex {
pthread_mutex_t mutex;
} mu[] = {{
PTHREAD_MUTEX_INITIALIZER,
}};
}
TEST(pthread_mutex_lock, normal) {
pthread_mutex_t lock;
pthread_mutexattr_t attr;
@ -100,12 +108,10 @@ TEST(pthread_mutex_lock, errorcheck) {
ASSERT_EQ(0, pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK));
ASSERT_EQ(0, pthread_mutex_init(&lock, &attr));
ASSERT_EQ(0, pthread_mutexattr_destroy(&attr));
ASSERT_EQ(EPERM, pthread_mutex_unlock(&lock));
ASSERT_EQ(0, pthread_mutex_lock(&lock));
ASSERT_EQ(EDEADLK, pthread_mutex_lock(&lock));
ASSERT_EQ(EBUSY, pthread_mutex_trylock(&lock));
ASSERT_EQ(0, pthread_mutex_unlock(&lock));
ASSERT_EQ(EPERM, pthread_mutex_unlock(&lock));
ASSERT_EQ(0, pthread_mutex_destroy(&lock));
}

12
test/libc/stdio/popen_test.c
View file

@ -132,13 +132,7 @@ TEST(popen, torture) {
int i, n = 8;
pthread_t *t = _gc(malloc(sizeof(pthread_t) * n));
testlib_extract("/zip/echo.com", "echo.com", 0755);
for (i = 0; i < n; ++i) {
ASSERT_EQ(0, pthread_create(t + i, 0, Worker, 0));
}
for (i = 0; i < n; ++i) {
ASSERT_EQ(0, pthread_join(t[i], 0));
}
for (i = 3; i < 16; ++i) {
ASSERT_SYS(EBADF, -1, fcntl(3, F_GETFL));
}
for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_create(t + i, 0, Worker, 0));
for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_join(t[i], 0));
for (i = 3; i < 16; ++i) ASSERT_SYS(EBADF, -1, fcntl(i, F_GETFL));
}

81
test/libc/stdio/spawn_test.c → test/libc/stdio/posix_spawn_test.c
View file

@ -16,19 +16,26 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/atomic.h"
#include "libc/calls/calls.h"
#include "libc/calls/state.internal.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/dce.h"
#include "libc/fmt/conv.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/safemacros.internal.h"
#include "libc/mem/gc.h"
#include "libc/mem/mem.h"
#include "libc/runtime/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/posix_spawn.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/auxv.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
char testlib_enable_tmp_setup_teardown;
@ -41,7 +48,7 @@ __attribute__((__constructor__)) static void init(void) {
}
}
TEST(spawn, test) {
TEST(posix_spawn, test) {
int rc, ws, pid;
char *prog = GetProgramExecutableName();
char *args[] = {program_invocation_name, NULL};
@ -52,7 +59,7 @@ TEST(spawn, test) {
EXPECT_EQ(42, WEXITSTATUS(ws));
}
TEST(spawn, pipe) {
TEST(posix_spawn, pipe) {
char buf[10];
int p[2], pid, status;
const char *pn = "./echo.com";
@ -71,6 +78,76 @@ TEST(spawn, pipe) {
ASSERT_EQ(0, posix_spawn_file_actions_destroy(&fa));
}
_Thread_local atomic_int gotsome;
void OhMyGoth(int sig) {
++gotsome;
}
// time for a vfork() clone() signal bloodbath
TEST(posix_spawn, torture) {
int n = 10;
int ws, pid;
short flags;
sigset_t allsig;
posix_spawnattr_t attr;
posix_spawn_file_actions_t fa;
signal(SIGUSR2, OhMyGoth);
sigfillset(&allsig);
if (!fileexists("echo.com")) {
testlib_extract("/zip/echo.com", "echo.com", 0755);
}
// XXX: NetBSD doesn't seem to let us set the scheduler to itself ;_;
ASSERT_EQ(0, posix_spawnattr_init(&attr));
ASSERT_EQ(0, posix_spawnattr_setflags(
&attr, POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETPGROUP |
POSIX_SPAWN_SETSIGMASK |
(IsNetbsd() ? 0 : POSIX_SPAWN_SETSCHEDULER)));
ASSERT_EQ(0, posix_spawnattr_setsigmask(&attr, &allsig));
ASSERT_EQ(0, posix_spawnattr_setsigdefault(&attr, &allsig));
ASSERT_EQ(0, posix_spawn_file_actions_init(&fa));
ASSERT_EQ(0, posix_spawn_file_actions_addclose(&fa, 0));
ASSERT_EQ(
0, posix_spawn_file_actions_addopen(&fa, 1, "/dev/null", O_WRONLY, 0644));
ASSERT_EQ(0, posix_spawn_file_actions_adddup2(&fa, 1, 0));
for (int i = 0; i < n; ++i) {
char *volatile zzz = malloc(13);
volatile int fd = open("/dev/null", O_WRONLY);
char *args[] = {"./echo.com", NULL};
char *envs[] = {NULL};
raise(SIGUSR2);
ASSERT_EQ(0, posix_spawn(&pid, "./echo.com", &fa, &attr, args, envs));
ASSERT_FALSE(__vforked);
ASSERT_NE(-1, waitpid(pid, &ws, 0));
ASSERT_TRUE(WIFEXITED(ws));
ASSERT_EQ(0, WEXITSTATUS(ws));
close(fd);
free(zzz);
}
// TODO(jart): Why does it deliver 2x the signals sometimes?
ASSERT_NE(0, gotsome);
ASSERT_EQ(0, posix_spawn_file_actions_destroy(&fa));
ASSERT_EQ(0, posix_spawnattr_destroy(&attr));
}
void *Torturer(void *arg) {
posix_spawn_torture();
return 0;
}
TEST(posix_spawn, agony) {
int i, n = 3;
pthread_t *t = _gc(malloc(sizeof(pthread_t) * n));
testlib_extract("/zip/echo.com", "echo.com", 0755);
for (i = 0; i < n; ++i) {
ASSERT_EQ(0, pthread_create(t + i, 0, Torturer, 0));
}
for (i = 0; i < n; ++i) {
ASSERT_EQ(0, pthread_join(t[i], 0));
}
}
/*
* BEST LINUX FORK+EXEC+EXIT+WAIT PERFORMANCE
* The fastest it can go with fork() is 40µs

138
test/libc/stdio/test.mk
View file

@ -6,99 +6,109 @@ PKGS += TEST_LIBC_STDIO
TEST_LIBC_STDIO_SRCS := $(wildcard test/libc/stdio/*.c)
TEST_LIBC_STDIO_SRCS_TEST = $(filter %_test.c,$(TEST_LIBC_STDIO_SRCS))
TEST_LIBC_STDIO_OBJS = \
TEST_LIBC_STDIO_OBJS = \
$(TEST_LIBC_STDIO_SRCS:%.c=o/$(MODE)/%.o)
TEST_LIBC_STDIO_COMS = \
TEST_LIBC_STDIO_COMS = \
$(TEST_LIBC_STDIO_SRCS:%.c=o/$(MODE)/%.com)
TEST_LIBC_STDIO_BINS = \
$(TEST_LIBC_STDIO_COMS) \
TEST_LIBC_STDIO_BINS = \
$(TEST_LIBC_STDIO_COMS) \
$(TEST_LIBC_STDIO_COMS:%=%.dbg)
TEST_LIBC_STDIO_TESTS = \
TEST_LIBC_STDIO_TESTS = \
$(TEST_LIBC_STDIO_SRCS_TEST:%.c=o/$(MODE)/%.com.ok)
TEST_LIBC_STDIO_CHECKS = \
TEST_LIBC_STDIO_CHECKS = \
$(TEST_LIBC_STDIO_SRCS_TEST:%.c=o/$(MODE)/%.com.runs)
TEST_LIBC_STDIO_DIRECTDEPS = \
LIBC_CALLS \
LIBC_FMT \
LIBC_INTRIN \
LIBC_MEM \
LIBC_NEXGEN32E \
LIBC_RUNTIME \
LIBC_STDIO \
LIBC_STR \
LIBC_STUBS \
LIBC_SYSV \
LIBC_TINYMATH \
LIBC_TESTLIB \
LIBC_THREAD \
LIBC_TIME \
LIBC_LOG \
LIBC_X \
LIBC_ZIPOS \
THIRD_PARTY_GDTOA \
THIRD_PARTY_MBEDTLS \
THIRD_PARTY_MUSL \
THIRD_PARTY_ZLIB \
TEST_LIBC_STDIO_DIRECTDEPS = \
LIBC_CALLS \
LIBC_FMT \
LIBC_INTRIN \
LIBC_MEM \
LIBC_NEXGEN32E \
LIBC_RUNTIME \
LIBC_STDIO \
LIBC_STR \
LIBC_STUBS \
LIBC_SYSV \
LIBC_TINYMATH \
LIBC_TESTLIB \
LIBC_THREAD \
LIBC_TIME \
LIBC_LOG \
LIBC_X \
LIBC_ZIPOS \
THIRD_PARTY_GDTOA \
THIRD_PARTY_MBEDTLS \
THIRD_PARTY_MUSL \
THIRD_PARTY_ZLIB \
THIRD_PARTY_ZLIB_GZ
TEST_LIBC_STDIO_DEPS := \
TEST_LIBC_STDIO_DEPS := \
$(call uniq,$(foreach x,$(TEST_LIBC_STDIO_DIRECTDEPS),$($(x))))
o/$(MODE)/test/libc/stdio/stdio.pkg: \
$(TEST_LIBC_STDIO_OBJS) \
o/$(MODE)/test/libc/stdio/stdio.pkg: \
$(TEST_LIBC_STDIO_OBJS) \
$(foreach x,$(TEST_LIBC_STDIO_DIRECTDEPS),$($(x)_A).pkg)
o/$(MODE)/test/libc/stdio/%.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/%.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
o/$(MODE)/test/libc/stdio/%.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/%.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
$(APE_NO_MODIFY_SELF)
@$(APELINK)
o/$(MODE)/test/libc/stdio/system_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/system_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
o/$(MODE)/tool/build/cocmd.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
o/$(MODE)/test/libc/stdio/system_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/system_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
o/$(MODE)/tool/build/cocmd.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
$(APE_NO_MODIFY_SELF)
@$(APELINK)
o/$(MODE)/test/libc/stdio/popen_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/popen_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
o/$(MODE)/test/libc/stdio/popen_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/popen_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
$(APE_NO_MODIFY_SELF)
@$(APELINK)
o/$(MODE)/test/libc/stdio/spawn_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/spawn_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
o/$(MODE)/test/libc/stdio/posix_spawn_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/posix_spawn_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
$(APE_NO_MODIFY_SELF)
@$(APELINK)
$(TEST_LIBC_STDIO_OBJS): private \
DEFAULT_CCFLAGS += \
o/$(MODE)/test/libc/stdio/wut_test.com.dbg: \
$(TEST_LIBC_STDIO_DEPS) \
o/$(MODE)/test/libc/stdio/wut_test.o \
o/$(MODE)/test/libc/stdio/stdio.pkg \
o/$(MODE)/tool/build/echo.com.zip.o \
$(LIBC_TESTMAIN) \
$(CRT) \
$(APE_NO_MODIFY_SELF)
@$(APELINK)
$(TEST_LIBC_STDIO_OBJS): private \
DEFAULT_CCFLAGS += \
-fno-builtin
.PHONY: o/$(MODE)/test/libc/stdio
o/$(MODE)/test/libc/stdio: \
$(TEST_LIBC_STDIO_BINS) \
o/$(MODE)/test/libc/stdio: \
$(TEST_LIBC_STDIO_BINS) \
$(TEST_LIBC_STDIO_CHECKS)

64
test/libc/stdio/wut_test.c Normal file
View file

@ -0,0 +1,64 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/sigset.h"
#include "libc/dce.h"
#include "libc/mem/mem.h"
#include "libc/stdio/posix_spawn.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
char testlib_enable_tmp_setup_teardown;
TEST(posix_spawn, torture) {
int ws, pid;
short flags;
sigset_t allsig;
posix_spawnattr_t attr;
posix_spawn_file_actions_t fa;
sigfillset(&allsig);
testlib_extract("/zip/echo.com", "echo.com", 0755);
// XXX: NetBSD doesn't seem to let us set the scheduler to itself ;_;
ASSERT_EQ(0, posix_spawnattr_init(&attr));
ASSERT_EQ(0, posix_spawnattr_setflags(
&attr, POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETPGROUP |
POSIX_SPAWN_SETSIGMASK |
(IsNetbsd() ? 0 : POSIX_SPAWN_SETSCHEDULER)));
ASSERT_EQ(0, posix_spawnattr_setsigmask(&attr, &allsig));
ASSERT_EQ(0, posix_spawnattr_setsigdefault(&attr, &allsig));
ASSERT_EQ(0, posix_spawn_file_actions_init(&fa));
ASSERT_EQ(0, posix_spawn_file_actions_addclose(&fa, 0));
ASSERT_EQ(
0, posix_spawn_file_actions_addopen(&fa, 1, "/dev/null", O_WRONLY, 0644));
ASSERT_EQ(0, posix_spawn_file_actions_adddup2(&fa, 1, 0));
for (int i = 0; i < 15; ++i) {
char *volatile zzz = malloc(13);
char *args[] = {"./echo.com", NULL};
char *envs[] = {NULL};
ASSERT_EQ(0, posix_spawn(&pid, "./echo.com", &fa, &attr, args, envs));
ASSERT_NE(-1, waitpid(pid, &ws, 0));
ASSERT_TRUE(WIFEXITED(ws));
ASSERT_EQ(0, WEXITSTATUS(ws));
free(zzz);
}
ASSERT_EQ(0, posix_spawn_file_actions_destroy(&fa));
ASSERT_EQ(0, posix_spawnattr_destroy(&attr));
}

54
test/libc/str/sigset_test.c → test/libc/str/hexpcpy_test.c
View file

@ -1,7 +1,7 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
@ -16,47 +16,23 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/intrin/bits.h"
#include "libc/intrin/safemacros.internal.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/sigset.h"
#include "libc/macros.internal.h"
#include "libc/stdio/rand.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
sigset_t ss;
TEST(sigemptyset, test) {
EXPECT_EQ(0, sigemptyset(&ss));
EXPECT_BINEQ(u"        ", &ss);
TEST(hexpcpy, test) {
char buf[] = {0x00, 0x02, 0x20, 0x80, 0xf5, 0xff};
char str[ARRAYLEN(buf) * 2 + 1];
rngset(str, sizeof(str), _rand64, -1);
EXPECT_EQ(str + ARRAYLEN(buf) * 2, hexpcpy(str, buf, ARRAYLEN(buf)));
EXPECT_STREQ("00022080f5ff", str);
}
TEST(sigfillset, test) {
EXPECT_EQ(0, sigfillset(&ss));
EXPECT_BINEQ(u"λλλλλλλλ", &ss);
}
TEST(sigaddset, test) {
sigemptyset(&ss);
EXPECT_EQ(0, sigaddset(&ss, 1));
EXPECT_BINEQ(u"☺       ", &ss);
EXPECT_EQ(0, sigaddset(&ss, 64));
EXPECT_BINEQ(u"☺      Ç", &ss);
}
TEST(sigdelset, test) {
sigfillset(&ss);
EXPECT_EQ(0, sigdelset(&ss, 1));
EXPECT_BINEQ(u"■λλλλλλλ", &ss);
EXPECT_EQ(0, sigdelset(&ss, 64));
EXPECT_BINEQ(u"■λλλλλλ⌂", &ss);
}
TEST(sigismember, test) {
sigfillset(&ss);
EXPECT_TRUE(sigismember(&ss, 1));
sigdelset(&ss, 1);
EXPECT_FALSE(sigismember(&ss, 1));
EXPECT_TRUE(sigismember(&ss, 64));
sigdelset(&ss, 64);
EXPECT_FALSE(sigismember(&ss, 64));
TEST(hexpcpy, emptyBuf_writesNulTerminator) {
char buf[1];
char str[1];
rngset(str, sizeof(str), _rand64, -1);
EXPECT_EQ(str, hexpcpy(str, buf, 0));
EXPECT_STREQ("", str);
}

22
test/libc/thread/pthread_create_test.c
View file

@ -86,20 +86,6 @@ TEST(pthread_create, testCreateExitJoin) {
ASSERT_EQ((void *)3, rc);
}
TEST(pthread_detach, testCreateReturn) {
pthread_t id;
ASSERT_EQ(0, pthread_create(&id, 0, Increment, 0));
ASSERT_EQ(0, pthread_detach(id));
}
TEST(pthread_detach, testDetachUponCreation) {
pthread_attr_t attr;
ASSERT_EQ(0, pthread_attr_init(&attr));
ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED));
ASSERT_EQ(0, pthread_create(0, &attr, Increment, 0));
ASSERT_EQ(0, pthread_attr_destroy(&attr));
}
static void *CheckSchedule(void *arg) {
int rc, policy;
struct sched_param prio;
@ -114,7 +100,7 @@ static void *CheckSchedule(void *arg) {
return 0;
}
TEST(pthread_detach, scheduling) {
TEST(pthread_create, scheduling) {
pthread_t id;
pthread_attr_t attr;
struct sched_param pri = {sched_get_priority_min(SCHED_OTHER)};
@ -134,7 +120,7 @@ static void *CheckStack(void *arg) {
return 0;
}
TEST(pthread_detach, testBigStack) {
TEST(pthread_create, testBigStack) {
pthread_t id;
pthread_attr_t attr;
ASSERT_EQ(0, pthread_attr_init(&attr));
@ -151,7 +137,7 @@ static void *CheckStack2(void *arg) {
return 0;
}
TEST(pthread_detach, testBiggerGuardSize) {
TEST(pthread_create, testBiggerGuardSize) {
pthread_t id;
pthread_attr_t attr;
ASSERT_EQ(0, pthread_attr_init(&attr));
@ -162,7 +148,7 @@ TEST(pthread_detach, testBiggerGuardSize) {
ASSERT_EQ(0, pthread_join(id, 0));
}
TEST(pthread_detach, testCustomStack_withReallySmallSize) {
TEST(pthread_create, testCustomStack_withReallySmallSize) {
char *stk;
size_t siz;
pthread_t id;

61
test/libc/thread/pthread_detach_test.c Normal file
View file

@ -0,0 +1,61 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/errno.h"
#include "libc/sysv/consts/sa.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
void OnUsr1(int sig, struct siginfo *si, void *vctx) {
struct ucontext *ctx = vctx;
}
void SetUp(void) {
struct sigaction sig = {.sa_sigaction = OnUsr1, .sa_flags = SA_SIGINFO};
sigaction(SIGUSR1, &sig, 0);
}
void TriggerSignal(void) {
sched_yield();
raise(SIGUSR1);
sched_yield();
}
static void *Increment(void *arg) {
ASSERT_EQ(EDEADLK, pthread_join(pthread_self(), 0));
ASSERT_EQ(gettid(), pthread_getthreadid_np());
TriggerSignal();
return (void *)((uintptr_t)arg + 1);
}
TEST(pthread_detach, testCreateReturn) {
pthread_t id;
ASSERT_EQ(0, pthread_create(&id, 0, Increment, 0));
ASSERT_EQ(0, pthread_detach(id));
}
TEST(pthread_detach, testDetachUponCreation) {
pthread_attr_t attr;
ASSERT_EQ(0, pthread_attr_init(&attr));
ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED));
ASSERT_EQ(0, pthread_create(0, &attr, Increment, 0));
ASSERT_EQ(0, pthread_attr_destroy(&attr));
}

135
test/libc/thread/sem_open_test.c
View file

@ -18,12 +18,15 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/mem/gc.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/temp.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/semaphore.h"
#include "libc/thread/thread.h"
@ -31,50 +34,158 @@
pthread_barrier_t barrier;
char testlib_enable_tmp_setup_teardown;
void SetUp(void) {
// TODO(jart): Fix shocking GitHub Actions error.
if (getenv("CI")) exit(0);
sem_unlink("/fooz");
sem_unlink("/barz");
}
void IgnoreStderr(void) {
close(2);
open("/dev/null", O_WRONLY);
}
void *Worker(void *arg) {
sem_t *a, *b;
struct timespec ts;
ASSERT_NE(SEM_FAILED, (a = sem_open("fooz", O_CREAT, 0644)));
ASSERT_NE(SEM_FAILED, (b = sem_open("barz", O_CREAT, 0644)));
ASSERT_NE(SEM_FAILED, (a = sem_open("/fooz", 0)));
ASSERT_EQ((sem_t *)arg, a);
ASSERT_NE(SEM_FAILED, (b = sem_open("/barz", 0)));
if (pthread_barrier_wait(&barrier) == PTHREAD_BARRIER_SERIAL_THREAD) {
if (!IsWindows()) { // :'(
ASSERT_SYS(0, 0, sem_unlink("fooz"));
ASSERT_SYS(0, 0, sem_unlink("barz"));
}
ASSERT_SYS(0, 0, sem_unlink("/fooz"));
}
ASSERT_SYS(0, 0, clock_gettime(CLOCK_REALTIME, &ts));
ts.tv_sec += 1;
ASSERT_SYS(0, 0, sem_post(a));
ASSERT_SYS(0, 0, sem_timedwait(b, &ts));
ASSERT_SYS(0, 0, sem_close(b));
ASSERT_TRUE(testlib_memoryexists(b));
ASSERT_SYS(0, 0, sem_close(a));
ASSERT_TRUE(testlib_memoryexists(a));
return 0;
}
// 1. multiple threads opening same name must yield same address
// 2. semaphore memory is freed, when all threads have closed it
// 3. semaphore may be unlinked before it's closed, from creator
// 4. semaphore may be unlinked before it's closed, from threads
TEST(sem_open, test) {
if (IsLinux()) return; // TODO(jart): Fix shocking GitHub Actions error.
sem_t *a, *b;
int i, r, n = 4;
pthread_t *t = _gc(malloc(sizeof(pthread_t) * n));
sem_unlink("barz");
sem_unlink("fooz");
sem_unlink("/fooz");
sem_unlink("/barz");
errno = 0;
ASSERT_EQ(0, pthread_barrier_init(&barrier, 0, n));
ASSERT_NE(SEM_FAILED, (a = sem_open("fooz", O_CREAT, 0644)));
ASSERT_NE(SEM_FAILED, (b = sem_open("barz", O_CREAT, 0644)));
ASSERT_NE(SEM_FAILED, (a = sem_open("/fooz", O_CREAT, 0644, 0)));
ASSERT_NE(SEM_FAILED, (b = sem_open("/barz", O_CREAT, 0644, 0)));
ASSERT_SYS(0, 0, sem_getvalue(a, &r));
ASSERT_EQ(0, r);
ASSERT_SYS(0, 0, sem_getvalue(b, &r));
ASSERT_EQ(0, r);
for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_create(t + i, 0, Worker, 0));
for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_create(t + i, 0, Worker, a));
for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, sem_wait(a));
ASSERT_SYS(0, 0, sem_getvalue(a, &r));
ASSERT_EQ(0, r);
for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, sem_post(b));
for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_join(t[i], 0));
ASSERT_SYS(0, 0, sem_unlink("/barz"));
ASSERT_SYS(0, 0, sem_getvalue(b, &r));
ASSERT_EQ(0, r);
ASSERT_SYS(0, 0, sem_close(b));
ASSERT_FALSE(testlib_memoryexists(b));
ASSERT_SYS(0, 0, sem_close(a));
ASSERT_FALSE(testlib_memoryexists(a));
ASSERT_EQ(0, pthread_barrier_destroy(&barrier));
}
TEST(sem_close, withUnnamedSemaphore_isUndefinedBehavior) {
if (!IsModeDbg()) return;
sem_t sem;
ASSERT_SYS(0, 0, sem_init(&sem, 1, 0));
SPAWN(fork);
IgnoreStderr();
sem_close(&sem);
EXITS(77);
ASSERT_SYS(0, 0, sem_destroy(&sem));
}
TEST(sem_destroy, withNamedSemaphore_isUndefinedBehavior) {
if (!IsModeDbg()) return;
sem_t *sem;
ASSERT_NE(SEM_FAILED, (sem = sem_open("/boop", O_CREAT, 0644, 0)));
SPAWN(fork);
IgnoreStderr();
sem_destroy(sem);
EXITS(77);
ASSERT_SYS(0, 0, sem_unlink("/boop"));
ASSERT_SYS(0, 0, sem_close(sem));
}
TEST(sem_open, inheritAcrossFork) {
sem_t *a, *b;
struct timespec ts;
ASSERT_SYS(0, 0, clock_gettime(CLOCK_REALTIME, &ts));
ts.tv_sec += 1;
errno = 0;
ASSERT_NE(SEM_FAILED, (a = sem_open("/fooz", O_CREAT, 0644, 0)));
ASSERT_SYS(0, 0, sem_unlink("/fooz"));
ASSERT_NE(SEM_FAILED, (b = sem_open("/barz", O_CREAT, 0644, 0)));
ASSERT_SYS(0, 0, sem_unlink("/barz"));
SPAWN(fork);
ASSERT_SYS(0, 0, sem_post(a));
ASSERT_SYS(0, 0, sem_wait(b));
PARENT();
ASSERT_SYS(0, 0, sem_wait(a));
ASSERT_SYS(0, 0, sem_post(b));
WAIT(exit, 0);
ASSERT_SYS(0, 0, sem_close(b));
ASSERT_FALSE(testlib_memoryexists(b));
ASSERT_SYS(0, 0, sem_close(a));
ASSERT_FALSE(testlib_memoryexists(a));
}
TEST(sem_open, openReadonlyAfterUnlink_enoent) {
sem_t *sem;
sem_unlink("/fooz");
ASSERT_NE(SEM_FAILED, (sem = sem_open("/fooz", O_CREAT, 0644, 0)));
ASSERT_EQ(0, sem_unlink("/fooz"));
ASSERT_EQ(SEM_FAILED, sem_open("/fooz", O_RDONLY));
ASSERT_EQ(ENOENT, errno);
ASSERT_EQ(0, sem_close(sem));
}
TEST(sem_open, openReadonlyAfterIndependentUnlinkAndRecreate_returnsNewOne) {
if (1) return;
sem_t *a, *b;
ASSERT_NE(SEM_FAILED, (a = sem_open("/fooz", O_CREAT, 0644, 0)));
SPAWN(fork);
ASSERT_EQ(0, sem_unlink("/fooz"));
ASSERT_NE(SEM_FAILED, (b = sem_open("/fooz", O_CREAT, 0644, 0)));
ASSERT_NE(a, b);
ASSERT_SYS(0, 0, sem_post(a));
ASSERT_SYS(0, 0, sem_wait(b));
ASSERT_EQ(0, sem_close(b));
PARENT();
ASSERT_SYS(0, 0, sem_wait(a));
ASSERT_NE(SEM_FAILED, (b = sem_open("/fooz", O_RDONLY)));
ASSERT_NE(a, b);
ASSERT_SYS(0, 0, sem_post(b));
ASSERT_EQ(0, sem_close(b));
WAIT(exit, 0);
ASSERT_EQ(0, sem_close(a));
}
TEST(sem_close, openTwiceCloseOnce_stillMapped) {
if (1) return;
sem_t *a, *b;
char name[] = "smXXXXXX";
ASSERT_NE(NULL, mktemp(name));
ASSERT_NE(SEM_FAILED, (a = sem_open(name, O_CREAT | O_EXCL, 0600, 0)));
ASSERT_NE(SEM_FAILED, (b = sem_open(name, 0)));
ASSERT_SYS(0, 0, sem_unlink(name));
ASSERT_SYS(0, 0, sem_close(a));
ASSERT_SYS(0, 0, sem_post(a));
ASSERT_SYS(0, 0, sem_close(b));
}

115
test/libc/thread/sem_timedwait_test.c
View file

@ -25,11 +25,119 @@
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/semaphore.h"
#include "libc/thread/thread.h"
void IgnoreStderr(void) {
close(2);
open("/dev/null", O_WRONLY);
}
TEST(sem_init, einval) {
sem_t sem;
ASSERT_SYS(EINVAL, -1, sem_init(&sem, 0, -1));
}
TEST(sem_post, accessInChildProcessWhenNotPshared_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
SPAWN(fork);
IgnoreStderr();
sem_post(&sem);
EXITS(77);
}
TEST(sem_getvalue, accessInChildProcessWhenNotPshared_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
ASSERT_SYS(0, 0, sem_getvalue(&sem, &val));
SPAWN(fork);
IgnoreStderr();
sem_getvalue(&sem, &val);
EXITS(77);
ASSERT_SYS(0, 0, sem_destroy(&sem));
}
TEST(sem_timedwait, accessInChildProcessWhenNotPshared_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
SPAWN(fork);
IgnoreStderr();
sem_timedwait(&sem, 0);
EXITS(77);
ASSERT_SYS(0, 0, sem_destroy(&sem));
}
TEST(sem_trywait, accessInChildProcessWhenNotPshared_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
SPAWN(fork);
IgnoreStderr();
sem_trywait(&sem);
EXITS(77);
ASSERT_SYS(0, 0, sem_destroy(&sem));
}
TEST(sem_post, afterDestroyed_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
SPAWN(fork);
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
ASSERT_SYS(0, 0, sem_destroy(&sem));
IgnoreStderr();
sem_post(&sem);
EXITS(77);
}
TEST(sem_trywait, afterDestroyed_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
SPAWN(fork);
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
ASSERT_SYS(0, 0, sem_destroy(&sem));
IgnoreStderr();
sem_trywait(&sem);
EXITS(77);
}
TEST(sem_wait, afterDestroyed_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
SPAWN(fork);
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
ASSERT_SYS(0, 0, sem_destroy(&sem));
IgnoreStderr();
sem_wait(&sem);
EXITS(77);
}
TEST(sem_timedwait, afterDestroyed_isUndefinedBehavior) {
if (!IsModeDbg()) return;
int val;
sem_t sem;
SPAWN(fork);
ASSERT_SYS(0, 0, sem_init(&sem, 0, 0));
ASSERT_SYS(0, 0, sem_destroy(&sem));
IgnoreStderr();
sem_timedwait(&sem, 0);
EXITS(77);
}
void *Worker(void *arg) {
int rc;
sem_t **s = arg;
@ -60,9 +168,14 @@ TEST(sem_timedwait, threads) {
}
TEST(sem_timedwait, processes) {
if (IsOpenbsd()) return; // TODO(jart): fix me
int i, r, rc, n = 4, pshared = 1;
sem_t *sm = _mapshared(FRAMESIZE), *s[2] = {sm, sm + 1};
if (IsOpenbsd()) {
// TODO(jart): why?
ASSERT_SYS(EPERM, -1, sem_init(s[0], pshared, 0));
ASSERT_SYS(0, 0, munmap(sm, FRAMESIZE));
return;
}
ASSERT_SYS(0, 0, sem_init(s[0], pshared, 0));
ASSERT_SYS(0, 0, sem_init(s[1], pshared, 0));
for (i = 0; i < n; ++i) {