mirror of
https://github.com/ByteWelder/Tactility.git
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c87200a80d
- Create `Include/` folder for all main projects - Fix some issues here and there (found while moving things) - All includes are now in `Tactility/` subfolder and must be included with that prefix. This fixes issues with clashing POSIX headers (e.g. `<semaphore.h>` versus Tactility's `Semaphore.h`)
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
#include "Tactility/Semaphore.h"
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#include "Tactility/Check.h"
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#include "Tactility/CoreDefines.h"
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namespace tt {
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static inline QueueHandle_t createHandle(uint32_t maxCount, uint32_t initialCount) {
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assert((maxCount > 0U) && (initialCount <= maxCount));
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if (maxCount == 1U) {
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auto handle = xSemaphoreCreateBinary();
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if ((handle != nullptr) && (initialCount != 0U)) {
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if (xSemaphoreGive(handle) != pdPASS) {
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vSemaphoreDelete(handle);
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handle = nullptr;
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}
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}
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return handle;
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} else {
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return xSemaphoreCreateCounting(maxCount, initialCount);
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}
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}
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Semaphore::Semaphore(uint32_t maxAvailable, uint32_t initialAvailable) : handle(createHandle(maxAvailable, initialAvailable)) {
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assert(!TT_IS_IRQ_MODE());
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tt_check(handle != nullptr);
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}
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Semaphore::~Semaphore() {
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assert(!TT_IS_IRQ_MODE());
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}
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bool Semaphore::acquire(TickType_t timeout) const {
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if (TT_IS_IRQ_MODE()) {
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if (timeout != 0U) {
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return false;
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} else {
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BaseType_t yield = pdFALSE;
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if (xSemaphoreTakeFromISR(handle.get(), &yield) != pdPASS) {
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return false;
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} else {
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portYIELD_FROM_ISR(yield);
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return true;
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}
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}
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} else {
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return xSemaphoreTake(handle.get(), timeout) == pdPASS;
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}
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}
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bool Semaphore::release() const {
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if (TT_IS_IRQ_MODE()) {
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BaseType_t yield = pdFALSE;
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if (xSemaphoreGiveFromISR(handle.get(), &yield) != pdTRUE) {
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return false;
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} else {
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portYIELD_FROM_ISR(yield);
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return true;
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}
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} else {
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return xSemaphoreGive(handle.get()) == pdPASS;
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}
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}
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uint32_t Semaphore::getAvailable() const {
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if (TT_IS_IRQ_MODE()) {
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// TODO: uxSemaphoreGetCountFromISR is not supported on esp-idf 5.1.2 - perhaps later on?
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#ifdef uxSemaphoreGetCountFromISR
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return uxSemaphoreGetCountFromISR(handle.get());
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#else
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return uxQueueMessagesWaitingFromISR(handle.get());
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#endif
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} else {
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return uxSemaphoreGetCount(handle.get());
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}
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}
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} // namespace
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