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550ecbe37a
* Added a POSIX/Linux simulator that is compatible with the Amazon FreeRTOS SMP API. Note that the simulator itself is still single core, like the IDF FreeRTOS POSIX/Linux simulator.
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2022 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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/*
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* This file provides only very simple stubs to build IDF-based FreeRTOSes which use spinlocks on Linux.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SPINLOCK_FREE 0xB33FFFFF
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#define SPINLOCK_WAIT_FOREVER (-1)
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#define SPINLOCK_NO_WAIT 0
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#define SPINLOCK_INITIALIZER {.owner = SPINLOCK_FREE,.count = 0}
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#define CORE_ID_REGVAL_XOR_SWAP (0xCDCD ^ 0xABAB)
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/**
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* @brief Spinlock object
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* Owner:
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* - Set to 0 if uninitialized
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* - Set to portMUX_FREE_VAL when free
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* - Set to CORE_ID_REGVAL_PRO or CORE_ID_REGVAL_AP when locked
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* - Any other value indicates corruption
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* Count:
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* - 0 if unlocked
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* - Recursive count if locked
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*
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* @note The simulator is single-core, hence, it doesn't have a proper spinlock implementation.
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* @note Keep portMUX_INITIALIZER_UNLOCKED in sync with this struct
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*/
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typedef struct {
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uint32_t owner;
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uint32_t count;
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}spinlock_t;
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static inline void __attribute__((always_inline)) spinlock_initialize(spinlock_t *lock)
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{
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}
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static inline bool __attribute__((always_inline)) spinlock_acquire(spinlock_t *lock, int32_t timeout)
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{
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return true;
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}
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static inline void __attribute__((always_inline)) spinlock_release(spinlock_t *lock)
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{
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}
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#ifdef __cplusplus
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}
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#endif
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