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https://github.com/zephyrproject-rtos/zephyr
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4e0f7ea540
We shouldn't use swapping with an interrupt lock held as it works incorrectly on SMP platforms. Fix that by replacing irq_lock with spinlock for pthread subsystem. NOTE: we fix that in a simple way with single spinlock for mutex / cond_var / barrier. That could be improved later (i.e. split it for several spinlocks). Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
35 lines
660 B
C
35 lines
660 B
C
/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <posix/pthread.h>
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#include <ksched.h>
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#include <wait_q.h>
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extern struct k_spinlock z_pthread_spinlock;
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int pthread_barrier_wait(pthread_barrier_t *b)
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{
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k_spinlock_key_t key = k_spin_lock(&z_pthread_spinlock);
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int ret = 0;
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b->count++;
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if (b->count >= b->max) {
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b->count = 0;
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while (z_waitq_head(&b->wait_q)) {
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_ready_one_thread(&b->wait_q);
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}
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z_reschedule(&z_pthread_spinlock, key);
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ret = PTHREAD_BARRIER_SERIAL_THREAD;
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} else {
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(void) z_pend_curr(&z_pthread_spinlock, key, &b->wait_q, K_FOREVER);
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}
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return ret;
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}
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