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54 lines
2.7 KiB
C
54 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/intrin/atomic.h"
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#include "libc/intrin/pthread.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/testlib/testlib.h"
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#include "libc/thread/spawn.h"
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int i, n;
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struct spawn *t;
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_Atomic(int) x, y;
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pthread_barrier_t b;
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void InitFactory(void) {
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ASSERT_EQ(0, atomic_load(&x));
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atomic_fetch_add(&y, 1);
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}
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int Worker(void *arg, int tid) {
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static pthread_once_t once = PTHREAD_ONCE_INIT;
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pthread_barrier_wait(&b);
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ASSERT_EQ(0, pthread_once(&once, InitFactory));
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ASSERT_EQ(1, atomic_load(&y));
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atomic_fetch_add(&x, 1);
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return 0;
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}
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TEST(pthread_once, test) {
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n = 32;
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x = y = 0;
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pthread_barrier_init(&b, 0, n);
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t = gc(malloc(sizeof(struct spawn) * n));
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for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, _spawn(Worker, 0, t + i));
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for (i = 0; i < n; ++i) EXPECT_SYS(0, 0, _join(t + i));
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ASSERT_EQ(n, atomic_load(&x));
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ASSERT_EQ(1, atomic_load(&y));
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}
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