diff options
Diffstat (limited to 'src/core/hle/kernel')
| -rw-r--r-- | src/core/hle/kernel/semaphore.cpp | 41 | ||||
| -rw-r--r-- | src/core/hle/kernel/semaphore.h | 9 |
2 files changed, 18 insertions, 32 deletions
diff --git a/src/core/hle/kernel/semaphore.cpp b/src/core/hle/kernel/semaphore.cpp index 216c97835..f7a895c3f 100644 --- a/src/core/hle/kernel/semaphore.cpp +++ b/src/core/hle/kernel/semaphore.cpp @@ -27,11 +27,11 @@ public: std::string name; ///< Name of semaphore (optional) /** - * Tests whether a semaphore is at its peak capacity - * @return Whether the semaphore is full + * Tests whether a semaphore still has free slots + * @return Whether the semaphore is available */ - bool IsFull() const { - return current_usage == max_count; + bool IsAvailable() const { + return current_usage < max_count; } ResultVal<bool> WaitSynchronization() override { @@ -50,42 +50,27 @@ public: //////////////////////////////////////////////////////////////////////////////////////////////////// -/** - * Creates a semaphore - * @param initial_count number of slots reserved for other threads - * @param max_count maximum number of holders the semaphore can have - * @param name Optional name of semaphore - * @return Handle for the newly created semaphore - */ -Handle CreateSemaphore(u32 initial_count, +ResultCode CreateSemaphore(Handle* handle, u32 initial_count, u32 max_count, const std::string& name) { + if (initial_count > max_count) + return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::Kernel, + ErrorSummary::WrongArgument, ErrorLevel::Permanent); + Semaphore* semaphore = new Semaphore; - Handle handle = g_object_pool.Create(semaphore); + *handle = g_object_pool.Create(semaphore); semaphore->initial_count = initial_count; // When the semaphore is created, some slots are reserved for other threads, // and the rest is reserved for the caller thread - semaphore->max_count = semaphore->current_usage = max_count; - semaphore->current_usage -= initial_count; + semaphore->max_count = max_count; + semaphore->current_usage = max_count - initial_count; semaphore->name = name; - return handle; -} - -ResultCode CreateSemaphore(Handle* handle, u32 initial_count, - u32 max_count, const std::string& name) { - - if (initial_count > max_count) - return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::Kernel, - ErrorSummary::WrongArgument, ErrorLevel::Permanent); - *handle = CreateSemaphore(initial_count, max_count, name); - return RESULT_SUCCESS; } ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count) { - Semaphore* semaphore = g_object_pool.Get<Semaphore>(handle); if (semaphore == nullptr) return InvalidHandle(ErrorModule::Kernel); @@ -99,7 +84,7 @@ ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count) { // Notify some of the threads that the semaphore has been released // stop once the semaphore is full again or there are no more waiting threads - while (!semaphore->waiting_threads.empty() && !semaphore->IsFull()) { + while (!semaphore->waiting_threads.empty() && semaphore->IsAvailable()) { Kernel::ResumeThreadFromWait(semaphore->waiting_threads.front()); semaphore->waiting_threads.pop(); semaphore->current_usage++; diff --git a/src/core/hle/kernel/semaphore.h b/src/core/hle/kernel/semaphore.h index b29812e1d..f0075fdb8 100644 --- a/src/core/hle/kernel/semaphore.h +++ b/src/core/hle/kernel/semaphore.h @@ -11,21 +11,22 @@ namespace Kernel { /** - * Creates a semaphore + * Creates a semaphore. * @param handle Pointer to the handle of the newly created object - * @param initial_count number of slots reserved for other threads - * @param max_count maximum number of slots the semaphore can have + * @param initial_count Number of slots reserved for other threads + * @param max_count Maximum number of slots the semaphore can have * @param name Optional name of semaphore * @return ResultCode of the error */ ResultCode CreateSemaphore(Handle* handle, u32 initial_count, u32 max_count, const std::string& name = "Unknown"); /** - * Releases a certain number of slots from a semaphore + * Releases a certain number of slots from a semaphore. * @param count The number of free slots the semaphore had before this call * @param handle The handle of the semaphore to release * @param release_count The number of slots to release * @return ResultCode of the error */ ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count); + } // namespace |