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Implement POSIX threads API

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Justine Tunney 2022-09-05 08:26:03 -07:00
parent af24f21556
commit 9be364d40a
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95 changed files with 6029 additions and 317 deletions
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test/libc/intrin/pthread_rwlock_rdlock_test.c Normal file
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/*-*- 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/intrin/pthread.h"
#include "libc/mem/mem.h"
#include "libc/runtime/gc.internal.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/spawn.h"
#define ITERATIONS 50000
#define READERS 8
#define WRITERS 2
_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);
++reads;
pthread_rwlock_unlock(&lock);
}
return 0;
}
int Writer(void *arg, int tid) {
pthread_barrier_wait(&barrier);
for (int i = 0; i < ITERATIONS; ++i) {
pthread_rwlock_wrlock(&lock);
++writes;
pthread_rwlock_unlock(&lock);
}
return 0;
}
TEST(pthread_rwlock_rdlock, test) {
int i;
struct spawn *t = gc(malloc(sizeof(struct spawn) * (READERS + WRITERS)));
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));
}
for (i = 0; i < READERS + WRITERS; ++i) {
EXPECT_SYS(0, 0, _join(t + i));
}
EXPECT_EQ(READERS * ITERATIONS, reads);
EXPECT_EQ(WRITERS * ITERATIONS, writes);
}