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Implement POSIX threads API

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This commit is contained in:
Justine Tunney 2022-09-05 08:26:03 -07:00
parent af24f21556
commit 9be364d40a
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GPG key ID: BE714B4575D6E328
95 changed files with 6029 additions and 317 deletions
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19
test/libc/intrin/pthread_mutex_lock_test.c
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@ -49,8 +49,8 @@
int count;
_Atomic(int) started;
_Atomic(int) finished;
_Alignas(64) char slock;
pthread_mutex_t mylock;
pthread_spinlock_t slock;
struct spawn th[THREADS];
void SetUpOnce(void) {
@ -188,19 +188,27 @@ int SpinlockWorker(void *p, int tid) {
int i;
++started;
for (i = 0; i < ITERATIONS; ++i) {
_spinlock(&slock);
pthread_spin_lock(&slock);
++count;
_spunlock(&slock);
pthread_spin_unlock(&slock);
}
++finished;
STRACE("SpinlockWorker Finished %d", tid);
return 0;
}
TEST(_spinlock, contention) {
TEST(pthread_spin_lock, test) {
int i;
count = 0;
started = 0;
finished = 0;
EXPECT_EQ(0, pthread_spin_init(&slock, 0));
EXPECT_EQ(0, pthread_spin_trylock(&slock));
EXPECT_EQ(EBUSY, pthread_spin_trylock(&slock));
EXPECT_EQ(0, pthread_spin_unlock(&slock));
EXPECT_EQ(0, pthread_spin_lock(&slock));
EXPECT_EQ(EBUSY, pthread_spin_trylock(&slock));
EXPECT_EQ(0, pthread_spin_unlock(&slock));
for (i = 0; i < THREADS; ++i) {
ASSERT_NE(-1, _spawn(SpinlockWorker, (void *)(intptr_t)i, th + i));
}
@ -210,12 +218,13 @@ TEST(_spinlock, contention) {
EXPECT_EQ(THREADS, started);
EXPECT_EQ(THREADS, finished);
EXPECT_EQ(THREADS * ITERATIONS, count);
EXPECT_EQ(0, pthread_spin_destroy(&slock));
}
BENCH(pthread_mutex_lock, bench) {
char schar = 0;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
EZBENCH2("_spinlock", donothing, _spinlock_contention());
EZBENCH2("spin", donothing, pthread_spin_lock_test());
EZBENCH2("normal", donothing, pthread_mutex_lock_contention());
EZBENCH2("recursive", donothing, pthread_mutex_lock_rcontention());
EZBENCH2("errorcheck", donothing, pthread_mutex_lock_econtention());