27 lines
727 B
C
27 lines
727 B
C
|
// Copyright 2022 Stefan Kerkmann
|
||
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
|
||
|
|
#include "synchronization_util.h"
|
||
|
|
#include "ch.h"
|
||
|
|
|
||
|
|
#if defined(SPLIT_KEYBOARD)
|
||
|
|
static MUTEX_DECL(SPLIT_SHARED_MEMORY_MUTEX);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Acquire exclusive access to the split keyboard shared memory, by
|
||
|
|
* locking the mutex guarding it. If the mutex is already held, the calling
|
||
|
|
* thread will be suspended until the mutex currently owning thread releases the
|
||
|
|
* mutex again.
|
||
|
|
*/
|
||
|
|
void split_shared_memory_lock(void) {
|
||
|
|
chMtxLock(&SPLIT_SHARED_MEMORY_MUTEX);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Release the split shared memory mutex that has been acquired before.
|
||
|
|
*/
|
||
|
|
void split_shared_memory_unlock(void) {
|
||
|
|
chMtxUnlock(&SPLIT_SHARED_MEMORY_MUTEX);
|
||
|
|
}
|
||
|
|
#endif
|