142 lines
2.9 KiB
C
142 lines
2.9 KiB
C
#include "test/jemalloc_test.h"
|
|
|
|
#ifndef _WIN32
|
|
#include <sys/wait.h>
|
|
#endif
|
|
|
|
#ifndef _WIN32
|
|
static void
|
|
wait_for_child_exit(int pid) {
|
|
int status;
|
|
while (true) {
|
|
if (waitpid(pid, &status, 0) == -1) {
|
|
test_fail("Unexpected waitpid() failure.");
|
|
}
|
|
if (WIFSIGNALED(status)) {
|
|
test_fail("Unexpected child termination due to "
|
|
"signal %d", WTERMSIG(status));
|
|
break;
|
|
}
|
|
if (WIFEXITED(status)) {
|
|
if (WEXITSTATUS(status) != 0) {
|
|
test_fail("Unexpected child exit value %d",
|
|
WEXITSTATUS(status));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
TEST_BEGIN(test_fork) {
|
|
#ifndef _WIN32
|
|
void *p;
|
|
pid_t pid;
|
|
|
|
/* Set up a manually managed arena for test. */
|
|
unsigned arena_ind;
|
|
size_t sz = sizeof(unsigned);
|
|
expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
|
|
0, "Unexpected mallctl() failure");
|
|
|
|
/* Migrate to the new arena. */
|
|
unsigned old_arena_ind;
|
|
sz = sizeof(old_arena_ind);
|
|
expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz,
|
|
(void *)&arena_ind, sizeof(arena_ind)), 0,
|
|
"Unexpected mallctl() failure");
|
|
|
|
p = malloc(1);
|
|
expect_ptr_not_null(p, "Unexpected malloc() failure");
|
|
|
|
pid = fork();
|
|
|
|
free(p);
|
|
|
|
p = malloc(64);
|
|
expect_ptr_not_null(p, "Unexpected malloc() failure");
|
|
free(p);
|
|
|
|
if (pid == -1) {
|
|
/* Error. */
|
|
test_fail("Unexpected fork() failure");
|
|
} else if (pid == 0) {
|
|
/* Child. */
|
|
_exit(0);
|
|
} else {
|
|
wait_for_child_exit(pid);
|
|
}
|
|
#else
|
|
test_skip("fork(2) is irrelevant to Windows");
|
|
#endif
|
|
}
|
|
TEST_END
|
|
|
|
#ifndef _WIN32
|
|
static void *
|
|
do_fork_thd(void *arg) {
|
|
malloc(1);
|
|
int pid = fork();
|
|
if (pid == -1) {
|
|
/* Error. */
|
|
test_fail("Unexpected fork() failure");
|
|
} else if (pid == 0) {
|
|
/* Child. */
|
|
char *args[] = {"true", NULL};
|
|
execvp(args[0], args);
|
|
test_fail("Exec failed");
|
|
} else {
|
|
/* Parent */
|
|
wait_for_child_exit(pid);
|
|
}
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifndef _WIN32
|
|
static void
|
|
do_test_fork_multithreaded(void) {
|
|
thd_t child;
|
|
thd_create(&child, do_fork_thd, NULL);
|
|
do_fork_thd(NULL);
|
|
thd_join(child, NULL);
|
|
}
|
|
#endif
|
|
|
|
TEST_BEGIN(test_fork_multithreaded) {
|
|
#ifndef _WIN32
|
|
/*
|
|
* We've seen bugs involving hanging on arenas_lock (though the same
|
|
* class of bugs can happen on any mutex). The bugs are intermittent
|
|
* though, so we want to run the test multiple times. Since we hold the
|
|
* arenas lock only early in the process lifetime, we can't just run
|
|
* this test in a loop (since, after all the arenas are initialized, we
|
|
* won't acquire arenas_lock any further). We therefore repeat the test
|
|
* with multiple processes.
|
|
*/
|
|
for (int i = 0; i < 100; i++) {
|
|
int pid = fork();
|
|
if (pid == -1) {
|
|
/* Error. */
|
|
test_fail("Unexpected fork() failure,");
|
|
} else if (pid == 0) {
|
|
/* Child. */
|
|
do_test_fork_multithreaded();
|
|
_exit(0);
|
|
} else {
|
|
wait_for_child_exit(pid);
|
|
}
|
|
}
|
|
#else
|
|
test_skip("fork(2) is irrelevant to Windows");
|
|
#endif
|
|
}
|
|
TEST_END
|
|
|
|
int
|
|
main(void) {
|
|
return test_no_reentrancy(
|
|
test_fork,
|
|
test_fork_multithreaded);
|
|
}
|