mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-23 22:02:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Use *NSYNC for POSIX threads locking APIs

Browse source 
Condition variables, barriers, and r/w locks now work very well.
This commit is contained in:
Justine Tunney 2022-09-11 11:02:07 -07:00
parent 3de35e196c
commit b5cb71ab84
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
197 changed files with 3734 additions and 3817 deletions
Download patch file Download diff file Expand all files Collapse all files

16
test/libc/thread/pthread_rwlock_rdlock_test.c
View file

@ -16,6 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/atomic.h"
#include "libc/mem/mem.h"
#include "libc/runtime/gc.h"
#include "libc/testlib/testlib.h"
@ -26,17 +27,17 @@
#define READERS 8
#define WRITERS 2
_Atomic(int) reads;
_Atomic(int) writes;
atomic_int reads;
atomic_int writes;
pthread_rwlock_t lock;
pthread_barrier_t barrier;
int Reader(void *arg, int tid) {
pthread_barrier_wait(&barrier);
for (int i = 0; i < ITERATIONS; ++i) {
pthread_rwlock_rdlock(&lock);
ASSERT_EQ(0, pthread_rwlock_rdlock(&lock));
++reads;
pthread_rwlock_unlock(&lock);
ASSERT_EQ(0, pthread_rwlock_unlock(&lock));
}
return 0;
}
@ -44,9 +45,9 @@ int Reader(void *arg, int tid) {
int Writer(void *arg, int tid) {
pthread_barrier_wait(&barrier);
for (int i = 0; i < ITERATIONS; ++i) {
pthread_rwlock_wrlock(&lock);
ASSERT_EQ(0, pthread_rwlock_wrlock(&lock));
++writes;
pthread_rwlock_unlock(&lock);
ASSERT_EQ(0, pthread_rwlock_unlock(&lock));
}
return 0;
}
@ -54,7 +55,7 @@ int Writer(void *arg, int tid) {
TEST(pthread_rwlock_rdlock, test) {
int i;
struct spawn *t = _gc(malloc(sizeof(struct spawn) * (READERS + WRITERS)));
pthread_barrier_init(&barrier, 0, READERS + WRITERS);
ASSERT_EQ(0, pthread_barrier_init(&barrier, 0, READERS + WRITERS));
for (i = 0; i < READERS + WRITERS; ++i) {
ASSERT_SYS(0, 0, _spawn(i < READERS ? Reader : Writer, 0, t + i));
}
@ -63,4 +64,5 @@ TEST(pthread_rwlock_rdlock, test) {
}
EXPECT_EQ(READERS * ITERATIONS, reads);
EXPECT_EQ(WRITERS * ITERATIONS, writes);
ASSERT_EQ(0, pthread_barrier_destroy(&barrier));
}