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Build tool for hunting down flakes

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Justine Tunney 2024-12-24 11:34:42 -08:00
parent 93e22c581f
commit 2de3845b25
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GPG key ID: BE714B4575D6E328
10 changed files with 78 additions and 131 deletions
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14
test/libc/calls/shm_open_test.c
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@ -9,6 +9,7 @@
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/rand.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/map.h"
@ -18,7 +19,6 @@
#include "libc/sysv/consts/sig.h"
#include "libc/thread/semaphore.h"
#define SHM_PATH "/fc7261622dd420d8"
#define STRING_SEND "hello"
#define STRING_RECV "HELLO"
@ -29,13 +29,14 @@ struct shmbuf {
char buf[256]; /* Data being transferred */
};
char shm_path[64];
atomic_bool *ready;
wontreturn void Bouncer(void) {
/* Create shared memory object and set its size to the size
of our structure. */
int fd = shm_open(SHM_PATH, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
int fd = shm_open(shm_path, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
if (fd == -1) {
perror("shm_open(bouncer)");
exit(1);
@ -96,7 +97,7 @@ wontreturn void Sender(void) {
/* Open the existing shared memory object and map it
into the caller's address space. */
int fd = shm_open(SHM_PATH, O_RDWR, 0);
int fd = shm_open(shm_path, O_RDWR, 0);
if (fd == -1) {
perror("shm_open(sender)");
exit(1);
@ -136,7 +137,7 @@ wontreturn void Sender(void) {
/* Unlink the shared memory object. Even if the peer process
is still using the object, this is okay. The object will
be removed only after all open references are closed. */
if (shm_unlink(SHM_PATH)) {
if (shm_unlink(shm_path)) {
if (IsWindows() && errno == EACCES) {
// TODO(jart): Make unlink() work better on Windows.
} else {
@ -154,7 +155,7 @@ int pid2;
void OnExit(void) {
kill(pid1, SIGKILL);
kill(pid2, SIGKILL);
shm_unlink(SHM_PATH);
shm_unlink(shm_path);
}
void OnTimeout(int sig) {
@ -164,6 +165,9 @@ void OnTimeout(int sig) {
int main(int argc, char *argv[]) {
// create random shared memory name
sprintf(shm_path, "/shm_open_test-%ld", _rand64());
// create synchronization object
ready = _mapshared(1);