esp-idf/components/newlib/platform_include/sys/lock.h

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