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47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include_next <sys/lock.h>
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#ifdef _RETARGETABLE_LOCKING
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/* Actual platfrom-specific definition of struct __lock.
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* The size here should be sufficient for a FreeRTOS mutex.
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* This is checked by a static assertion in locks.c
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*
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* Note 1: this might need to be made dependent on whether FreeRTOS
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* is included in the build.
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*
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* Note 2: the size is made sufficient for the case when
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* configUSE_TRACE_FACILITY is enabled. If it is disabled,
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* this definition wastes 8 bytes.
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*/
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struct __lock {
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int reserved[23];
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};
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/* Compatibility definitions for the legacy ESP-specific locking implementation.
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* These used to be provided by libc/sys/xtensa/sys/lock.h in newlib.
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* Newer versions of newlib don't have this ESP-specific lock.h header, and are
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* built with _RETARGETABLE_LOCKING enabled, instead.
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*/
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typedef _LOCK_T _lock_t;
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void _lock_init(_lock_t *plock);
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void _lock_init_recursive(_lock_t *plock);
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void _lock_close(_lock_t *plock);
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void _lock_close_recursive(_lock_t *plock);
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void _lock_acquire(_lock_t *plock);
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void _lock_acquire_recursive(_lock_t *plock);
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int _lock_try_acquire(_lock_t *plock);
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int _lock_try_acquire_recursive(_lock_t *plock);
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void _lock_release(_lock_t *plock);
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void _lock_release_recursive(_lock_t *plock);
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#endif // _RETARGETABLE_LOCKING
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