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-rw-r--r--src/core/hle/kernel/semaphore.cpp65
1 files changed, 22 insertions, 43 deletions
diff --git a/src/core/hle/kernel/semaphore.cpp b/src/core/hle/kernel/semaphore.cpp
index 135d8fb2a..a9e406ef4 100644
--- a/src/core/hle/kernel/semaphore.cpp
+++ b/src/core/hle/kernel/semaphore.cpp
@@ -2,8 +2,6 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
-#include <queue>
-
#include "common/common.h"
#include "core/hle/kernel/kernel.h"
@@ -12,69 +10,50 @@
namespace Kernel {
-class Semaphore : public WaitObject {
-public:
- std::string GetTypeName() const override { return "Semaphore"; }
- std::string GetName() const override { return name; }
-
- static const HandleType HANDLE_TYPE = HandleType::Semaphore;
- HandleType GetHandleType() const override { return HANDLE_TYPE; }
-
- s32 max_count; ///< Maximum number of simultaneous holders the semaphore can have
- s32 available_count; ///< Number of free slots left in the semaphore
- std::string name; ///< Name of semaphore (optional)
-
- bool ShouldWait() override {
- return available_count <= 0;
- }
-
- void Acquire() override {
- _assert_msg_(Kernel, !ShouldWait(), "object unavailable!");
- --available_count;
- }
-};
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
-ResultCode CreateSemaphore(Handle* handle, s32 initial_count,
- s32 max_count, const std::string& name) {
+ResultVal<SharedPtr<Semaphore>> Semaphore::Create(s32 initial_count, s32 max_count,
+ std::string name) {
if (initial_count > max_count)
return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::Kernel,
ErrorSummary::WrongArgument, ErrorLevel::Permanent);
- Semaphore* semaphore = new Semaphore;
- // TOOD(yuriks): Fix error reporting
- *handle = g_handle_table.Create(semaphore).ValueOr(INVALID_HANDLE);
+ SharedPtr<Semaphore> semaphore(new Semaphore);
+ // TOOD(yuriks): Don't create Handle (see Thread::Create())
+ CASCADE_RESULT(auto unused, Kernel::g_handle_table.Create(semaphore));
// When the semaphore is created, some slots are reserved for other threads,
// and the rest is reserved for the caller thread
semaphore->max_count = max_count;
semaphore->available_count = initial_count;
- semaphore->name = name;
+ semaphore->name = std::move(name);
- return RESULT_SUCCESS;
+ return MakeResult<SharedPtr<Semaphore>>(std::move(semaphore));
}
-ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count) {
- Semaphore* semaphore = g_handle_table.Get<Semaphore>(handle).get();
- if (semaphore == nullptr)
- return InvalidHandle(ErrorModule::Kernel);
+bool Semaphore::ShouldWait() {
+ return available_count <= 0;
+}
+
+void Semaphore::Acquire() {
+ _assert_msg_(Kernel, !ShouldWait(), "object unavailable!");
+ --available_count;
+}
- if (semaphore->max_count - semaphore->available_count < release_count)
+ResultVal<s32> Semaphore::Release(s32 release_count) {
+ if (max_count - available_count < release_count)
return ResultCode(ErrorDescription::OutOfRange, ErrorModule::Kernel,
ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
- *count = semaphore->available_count;
- semaphore->available_count += release_count;
+ s32 previous_count = available_count;
+ available_count += 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->ShouldWait() && semaphore->WakeupNextThread() != nullptr) {
- semaphore->Acquire();
+ while (!ShouldWait() && WakeupNextThread() != nullptr) {
+ Acquire();
}
- return RESULT_SUCCESS;
+ return MakeResult<s32>(previous_count);
}
} // namespace