24 lines
647 B
C
24 lines
647 B
C
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/*
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* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "pico/critical_section.h"
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#if !PICO_NO_HARDWARE
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static_assert(sizeof(critical_section_t) == 8, "");
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#endif
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void critical_section_init(critical_section_t *critsec) {
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critical_section_init_with_lock_num(critsec, spin_lock_claim_unused(true));
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}
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void critical_section_init_with_lock_num(critical_section_t *critsec, uint lock_num) {
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lock_init(&critsec->core, lock_num);
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__mem_fence_release();
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}
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void critical_section_deinit(critical_section_t *critsec) {
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spin_lock_unclaim(spin_lock_get_num(critsec->core.spin_lock));
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}
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