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WaitSynchronizationN: Implement return values

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This commit is contained in:
bunnei 2015-01-17 02:03:44 -05:00
parent e4a5d8ad4f
commit 7faf2d8e06
10 changed files with 193 additions and 87 deletions
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8
src/core/hle/kernel/address_arbiter.cpp
View file

@ -52,13 +52,13 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
// Wait current thread (acquire the arbiter)...
case ArbitrationType::WaitIfLessThan:
if ((s32)Memory::Read32(address) <= value) {
Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
HLE::Reschedule(__func__);
}
break;
case ArbitrationType::WaitIfLessThanWithTimeout:
if ((s32)Memory::Read32(address) <= value) {
Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
Kernel::WakeThreadAfterDelay(GetCurrentThread(), nanoseconds);
HLE::Reschedule(__func__);
}
@ -68,7 +68,7 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
s32 memory_value = Memory::Read32(address) - 1;
Memory::Write32(address, memory_value);
if (memory_value <= value) {
Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
HLE::Reschedule(__func__);
}
break;
@ -78,7 +78,7 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
s32 memory_value = Memory::Read32(address) - 1;
Memory::Write32(address, memory_value);
if (memory_value <= value) {
Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
Kernel::WakeThreadAfterDelay(GetCurrentThread(), nanoseconds);
HLE::Reschedule(__func__);
}

4
src/core/hle/kernel/event.cpp
View file

@ -28,11 +28,11 @@ public:
bool signaled; ///< Whether the event has already been signaled
std::string name; ///< Name of event (optional)
ResultVal<bool> WaitSynchronization() override {
ResultVal<bool> WaitSynchronization(unsigned index) override {
bool wait = !signaled;
if (wait) {
AddWaitingThread(GetCurrentThread());
Kernel::WaitCurrentThread(WAITTYPE_EVENT, this);
Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_EVENT, this, index);
}
return MakeResult<bool>(wait);
}

4
src/core/hle/kernel/kernel.cpp
View file

@ -30,13 +30,13 @@ void WaitObject::RemoveWaitingThread(Thread* thread) {
waiting_threads.erase(itr);
}
Thread* WaitObject::ResumeNextThread() {
Thread* WaitObject::ReleaseNextThread() {
if (waiting_threads.empty())
return nullptr;
auto next_thread = waiting_threads.front();
next_thread->ResumeFromWait();
next_thread->ReleaseFromWait(this);
waiting_threads.erase(waiting_threads.begin());
return next_thread.get();

7
src/core/hle/kernel/kernel.h
View file

@ -66,9 +66,10 @@ public:
/**
* Wait for kernel object to synchronize.
* @param index Index of wait object (only applies to WaitSynchronizationN)
* @return True if the current thread should wait as a result of the wait
*/
virtual ResultVal<bool> WaitSynchronization() {
virtual ResultVal<bool> WaitSynchronization(unsigned index=0) {
LOG_ERROR(Kernel, "(UNIMPLEMENTED)");
return UnimplementedFunction(ErrorModule::Kernel);
}
@ -111,10 +112,10 @@ public:
void RemoveWaitingThread(Thread* thead);
/**
* Resumes (and removes) the next thread waiting on this object
* Releases (and removes) the next thread waiting on this object
* @return Pointer to the thread that was resumed, nullptr if no threads are waiting
*/
Thread* ResumeNextThread();
Thread* ReleaseNextThread();
/// Releases all threads waiting on this object
void ReleaseAllWaitingThreads();

8
src/core/hle/kernel/mutex.cpp
View file

@ -26,7 +26,7 @@ public:
Handle lock_thread; ///< Handle to thread that currently has mutex
std::string name; ///< Name of mutex (optional)
ResultVal<bool> WaitSynchronization() override;
ResultVal<bool> WaitSynchronization(unsigned index) override;
};
////////////////////////////////////////////////////////////////////////////////////////////////////
@ -50,7 +50,7 @@ void MutexAcquireLock(Mutex* mutex, Handle thread = GetCurrentThread()->GetHandl
*/
void ResumeWaitingThread(Mutex* mutex) {
// Find the next waiting thread for the mutex...
auto next_thread = mutex->ResumeNextThread();
auto next_thread = mutex->ReleaseNextThread();
if (next_thread != nullptr) {
MutexAcquireLock(mutex, next_thread->GetHandle());
} else {
@ -155,11 +155,11 @@ Handle CreateMutex(bool initial_locked, const std::string& name) {
return handle;
}
ResultVal<bool> Mutex::WaitSynchronization() {
ResultVal<bool> Mutex::WaitSynchronization(unsigned index) {
bool wait = locked;
if (locked) {
AddWaitingThread(GetCurrentThread());
Kernel::WaitCurrentThread(WAITTYPE_MUTEX, this);
Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_MUTEX, this, index);
} else {
// Lock the mutex when the first thread accesses it
locked = true;

6
src/core/hle/kernel/semaphore.cpp
View file

@ -32,11 +32,11 @@ public:
return available_count > 0;
}
ResultVal<bool> WaitSynchronization() override {
ResultVal<bool> WaitSynchronization(unsigned index) override {
bool wait = !IsAvailable();
if (wait) {
Kernel::WaitCurrentThread(WAITTYPE_SEMA, this);
Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_SEMA, this, index);
AddWaitingThread(GetCurrentThread());
} else {
--available_count;
@ -82,7 +82,7 @@ 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->IsAvailable() && semaphore->ResumeNextThread() != nullptr) {
while (semaphore->IsAvailable() && semaphore->ReleaseNextThread() != nullptr) {
--semaphore->available_count;
}

98
src/core/hle/kernel/thread.cpp
View file

@ -22,11 +22,11 @@
namespace Kernel {
ResultVal<bool> Thread::WaitSynchronization() {
ResultVal<bool> Thread::WaitSynchronization(unsigned index) {
const bool wait = status != THREADSTATUS_DORMANT;
if (wait) {
AddWaitingThread(GetCurrentThread());
WaitCurrentThread(WAITTYPE_THREADEND, this);
WaitCurrentThread_WaitSynchronization(WAITTYPE_THREADEND, this, index);
}
return MakeResult<bool>(wait);
@ -92,12 +92,12 @@ static bool CheckWaitType(const Thread* thread, WaitType type) {
/// Check if a thread is blocking on a specified wait type with a specified handle
static bool CheckWaitType(const Thread* thread, WaitType type, Object* wait_object) {
auto itr = std::find(thread->wait_objects.begin(), thread->wait_objects.end(), wait_object);
if (itr == thread->wait_objects.end()) {
return false;
}
for (auto itr = thread->wait_objects.begin(); itr != thread->wait_objects.end(); ++itr) {
if (itr->first == wait_object)
return CheckWaitType(thread, type);
}
return false;
}
/// Check if a thread is blocking on a specified wait type with a specified handle and address
static bool CheckWaitType(const Thread* thread, WaitType type, Object* wait_object, VAddr wait_address) {
@ -111,7 +111,7 @@ void Thread::Stop(const char* reason) {
ChangeReadyState(this, false);
status = THREADSTATUS_DORMANT;
ResumeAllWaitingThreads();
ReleaseAllWaitingThreads();
// Stopped threads are never waiting.
wait_type = WAITTYPE_NONE;
@ -135,7 +135,7 @@ static void ChangeThreadState(Thread* t, ThreadStatus new_status) {
}
/// Arbitrate the highest priority thread that is waiting
Thread* ArbitrateHighestPriorityThread(Object* arbiter, u32 address) {
Thread* ArbitrateHighestPriorityThread(WaitObject* arbiter, u32 address) {
Thread* highest_priority_thread = nullptr;
s32 priority = THREADPRIO_LOWEST;
@ -155,19 +155,19 @@ Thread* ArbitrateHighestPriorityThread(Object* arbiter, u32 address) {
// If a thread was arbitrated, resume it
if (nullptr != highest_priority_thread) {
highest_priority_thread->ResumeFromWait();
highest_priority_thread->ReleaseFromWait(arbiter);
}
return highest_priority_thread;
}
/// Arbitrate all threads currently waiting
void ArbitrateAllThreads(Object* arbiter, u32 address) {
void ArbitrateAllThreads(WaitObject* arbiter, u32 address) {
// Iterate through threads, find highest priority thread that is waiting to be arbitrated...
for (auto& thread : thread_list) {
if (CheckWaitType(thread.get(), WAITTYPE_ARB, arbiter, address))
thread->ResumeFromWait();
thread->ReleaseFromWait(arbiter);
}
}
@ -220,19 +220,32 @@ static Thread* NextThread() {
return next;
}
void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object) {
void WaitCurrentThread(WaitType wait_type) {
Thread* thread = GetCurrentThread();
thread->wait_type = wait_type;
auto res = std::find(thread->wait_objects.begin(), thread->wait_objects.end(), wait_object);
if (res == thread->wait_objects.end()) {
thread->wait_objects.push_back(wait_object);
}
ChangeThreadState(thread, ThreadStatus(THREADSTATUS_WAIT | (thread->status & THREADSTATUS_SUSPEND)));
}
void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object, VAddr wait_address) {
WaitCurrentThread(wait_type, wait_object);
void WaitCurrentThread_WaitSynchronization(WaitType wait_type, WaitObject* wait_object, unsigned index) {
Thread* thread = GetCurrentThread();
thread->wait_type = wait_type;
bool insert_wait_object = true;
for (auto itr = thread->wait_objects.begin(); itr < thread->wait_objects.end(); ++itr) {
if (itr->first == wait_object) {
insert_wait_object = false;
break;
}
}
if (insert_wait_object)
thread->wait_objects.push_back(std::pair<SharedPtr<WaitObject>, unsigned>(wait_object, index));
ChangeThreadState(thread, ThreadStatus(THREADSTATUS_WAIT | (thread->status & THREADSTATUS_SUSPEND)));
}
void WaitCurrentThread_ArbitrateAddress(WaitObject* wait_object, VAddr wait_address) {
WaitCurrentThread_WaitSynchronization(WaitType::WAITTYPE_ARB, wait_object, 0);
GetCurrentThread()->wait_address = wait_address;
}
@ -248,6 +261,9 @@ static void ThreadWakeupCallback(u64 parameter, int cycles_late) {
return;
}
thread->SetReturnValue(ResultCode(ErrorDescription::Timeout, ErrorModule::OS,
ErrorSummary::StatusChanged, ErrorLevel::Info), -1);
thread->ResumeFromWait();
}
@ -262,7 +278,40 @@ void WakeThreadAfterDelay(Thread* thread, s64 nanoseconds) {
CoreTiming::ScheduleEvent(usToCycles(microseconds), ThreadWakeupEventType, thread->GetHandle());
}
/// Resumes a thread from waiting by marking it as "ready"
void Thread::ReleaseFromWait(WaitObject* wait_object) {
if (wait_objects.empty()) {
LOG_CRITICAL(Kernel, "thread is not waiting on any objects!");
return;
}
// Remove this thread from the wait_object
wait_object->RemoveWaitingThread(this);
// Find the waiting object
auto itr = wait_objects.begin();
for (; itr != wait_objects.end(); ++itr) {
if (wait_object == itr->first)
break;
}
unsigned index = itr->second;
// Remove the wait_object from this thread
if (itr != wait_objects.end())
wait_objects.erase(itr);
// If wait_all=false, resume the thread on a release wait_object from wait
if (!wait_all) {
SetReturnValue(RESULT_SUCCESS, index);
ResumeFromWait();
} else {
// Otherwise, wait_all=true, only resume the thread if all wait_object's have been released
if (wait_objects.empty()) {
SetReturnValue(RESULT_SUCCESS, -1);
ResumeFromWait();
}
}
}
void Thread::ResumeFromWait() {
// Cancel any outstanding wakeup events
CoreTiming::UnscheduleEvent(ThreadWakeupEventType, GetHandle());
@ -271,11 +320,12 @@ void Thread::ResumeFromWait() {
// Remove this thread from all other WaitObjects
for (auto wait_object : wait_objects)
wait_object->RemoveWaitingThread(this);
wait_object.first->RemoveWaitingThread(this);
wait_objects.clear();
wait_type = WAITTYPE_NONE;
wait_all = false;
if (!(status & (THREADSTATUS_WAITSUSPEND | THREADSTATUS_DORMANT | THREADSTATUS_DEAD))) {
ChangeReadyState(this, true);
}
@ -342,6 +392,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
thread->initial_priority = thread->current_priority = priority;
thread->processor_id = processor_id;
thread->wait_type = WAITTYPE_NONE;
thread->wait_all = false;
thread->wait_objects.clear();
thread->wait_address = 0;
thread->name = std::move(name);
@ -432,6 +483,11 @@ void Reschedule() {
}
}
void Thread::SetReturnValue(ResultCode return_val, s32 out_val) {
context.cpu_registers[0] = return_val.raw;
context.cpu_registers[1] = out_val;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void ThreadingInit() {

58
src/core/hle/kernel/thread.h
View file

@ -70,7 +70,7 @@ public:
inline bool IsSuspended() const { return (status & THREADSTATUS_SUSPEND) != 0; }
inline bool IsIdle() const { return idle; }
ResultVal<bool> WaitSynchronization() override;
ResultVal<bool> WaitSynchronization(unsigned index) override;
s32 GetPriority() const { return current_priority; }
void SetPriority(s32 priority);
@ -78,9 +78,29 @@ public:
u32 GetThreadId() const { return thread_id; }
void Stop(const char* reason);
/// Resumes a thread from waiting by marking it as "ready".
/**
* Release an object from the thread's wait list
* @param wait_object WaitObject to release from the thread's wait list
*/
void ReleaseFromWait(WaitObject* wait_object);
/// Resumes a thread from waiting by marking it as "ready"
void ResumeFromWait();
/**
* Sets the waiting mode of the thread
* @param wait_all If true, wait for all objects, otherwise just wait for the first one
*/
void SetWaitAll(bool wait_all) { this->wait_all = wait_all; }
/**
* Sets the output values after the thread awakens from WaitSynchronization
* @param return_val Value returned
* @param out_val Value to set to the output parameter
*/
void SetReturnValue(ResultCode return_val, s32 out_val);
Core::ThreadContext context;
u32 thread_id;
@ -96,7 +116,7 @@ public:
s32 processor_id;
WaitType wait_type;
std::vector<SharedPtr<WaitObject>> wait_objects;
std::vector<std::pair<SharedPtr<WaitObject>, unsigned>> wait_objects;
VAddr wait_address;
std::string name;
@ -105,6 +125,8 @@ public:
bool idle = false;
private:
bool wait_all = false;
Thread() = default;
};
@ -115,37 +137,41 @@ SharedPtr<Thread> SetupMainThread(s32 priority, u32 stack_size);
void Reschedule();
/// Arbitrate the highest priority thread that is waiting
Thread* ArbitrateHighestPriorityThread(Object* arbiter, u32 address);
Thread* ArbitrateHighestPriorityThread(WaitObject* arbiter, u32 address);
/// Arbitrate all threads currently waiting...
void ArbitrateAllThreads(Object* arbiter, u32 address);
void ArbitrateAllThreads(WaitObject* arbiter, u32 address);
/// Gets the current thread
Thread* GetCurrentThread();
/**
* Puts the current thread in the wait state for the given type
* Waits the current thread for the given type
* @param wait_type Type of wait
* @param wait_object Kernel object that we are waiting on, defaults to current thread
*/
void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object = GetCurrentThread());
void WaitCurrentThread(WaitType wait_type);
/**
* Schedules an event to wake up the specified thread after the specified delay.
* @param thread The thread to wake after the delay.
* @param nanoseconds The time this thread will be allowed to sleep for.
* Waits the current thread from a WaitSynchronization call
* @param wait_type Type of wait
* @param wait_object Kernel object that we are waiting on
* @param index Index of calling object (for WaitSynchronizationN only)
*/
void WakeThreadAfterDelay(Thread* thread, s64 nanoseconds);
void WaitCurrentThread_WaitSynchronization(WaitType wait_type, WaitObject* wait_object, unsigned index=0);
/**
* Puts the current thread in the wait state for the given type
* @param wait_type Type of wait
* Waits the current thread from an ArbitrateAddress call
* @param wait_object Kernel object that we are waiting on
* @param wait_address Arbitration address used to resume from wait
*/
void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object, VAddr wait_address);
void WaitCurrentThread_ArbitrateAddress(WaitObject* wait_object, VAddr wait_address);
/**
* Schedules an event to wake up the specified thread after the specified delay.
* @param handle The thread handle.
* @param nanoseconds The time this thread will be allowed to sleep for.
*/
void WakeThreadAfterDelay(Thread* thread, s64 nanoseconds);
/**
* Sets up the idle thread, this is a thread that is intended to never execute instructions,

6
src/core/hle/kernel/timer.cpp
View file

@ -29,11 +29,11 @@ public:
u64 initial_delay; ///< The delay until the timer fires for the first time
u64 interval_delay; ///< The delay until the timer fires after the first time
ResultVal<bool> WaitSynchronization() override {
ResultVal<bool> WaitSynchronization(unsigned index) override {
bool wait = !signaled;
if (wait) {
AddWaitingThread(GetCurrentThread());
Kernel::WaitCurrentThread(WAITTYPE_TIMER, this);
Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_TIMER, this, index);
}
return MakeResult<bool>(wait);
}
@ -91,7 +91,7 @@ static void TimerCallback(u64 timer_handle, int cycles_late) {
timer->signaled = true;
// Resume all waiting threads
timer->ResumeAllWaitingThreads();
timer->ReleaseAllWaitingThreads();
if (timer->reset_type == RESETTYPE_ONESHOT)
timer->signaled = false;

77
src/core/hle/svc.cpp
View file

@ -133,6 +133,9 @@ static Result WaitSynchronization1(Handle handle, s64 nano_seconds) {
if (wait.Succeeded() && *wait) {
// Create an event to wake the thread up after the specified nanosecond delay has passed
Kernel::WakeThreadAfterDelay(Kernel::GetCurrentThread(), nano_seconds);
Kernel::GetCurrentThread()->SetWaitAll(false);
HLE::Reschedule(__func__);
}
@ -140,45 +143,65 @@ static Result WaitSynchronization1(Handle handle, s64 nano_seconds) {
}
/// Wait for the given handles to synchronize, timeout after the specified nanoseconds
static Result WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all,
s64 nano_seconds) {
static Result WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all, s64 nano_seconds) {
bool wait_thread = false;
bool wait_all_succeeded = false;
int handle_index = 0;
// TODO(bunnei): Do something with nano_seconds, currently ignoring this
bool unlock_all = true;
bool wait_infinite = (nano_seconds == -1); // Used to wait until a thread has terminated
LOG_TRACE(Kernel_SVC, "called handle_count=%d, wait_all=%s, nanoseconds=%lld",
handle_count, (wait_all ? "true" : "false"), nano_seconds);
// Iterate through each handle, synchronize kernel object
for (s32 i = 0; i < handle_count; i++) {
SharedPtr<Kernel::Object> object = Kernel::g_handle_table.GetGeneric(handles[i]);
while (handle_index < handle_count) {
SharedPtr<Kernel::Object> object = Kernel::g_handle_table.GetGeneric(handles[handle_index]);
if (object == nullptr)
return InvalidHandle(ErrorModule::Kernel).raw;
LOG_TRACE(Kernel_SVC, "\thandle[%d] = 0x%08X(%s:%s)", i, handles[i],
object->GetTypeName().c_str(), object->GetName().c_str());
ResultVal<bool> wait = object->WaitSynchronization(handle_index);
// TODO(yuriks): Verify how the real function behaves when an error happens here
ResultVal<bool> wait_result = object->WaitSynchronization();
bool wait = wait_result.Succeeded() && *wait_result;
wait_thread = (wait.Succeeded() && *wait);
if (!wait && !wait_all) {
*out = i;
return RESULT_SUCCESS.raw;
} else {
unlock_all = false;
}
// If this object waited and we are waiting on all objects to synchronize
if (wait_thread && wait_all) {
// Enforce later on that this thread does not continue
wait_all_succeeded = true;
}
if (wait_all && unlock_all) {
*out = handle_count;
return RESULT_SUCCESS.raw;
// If this object synchronized and we are not waiting on all objects to synchronize
if (!wait_thread && !wait_all)
// We're done, the thread will continue
break;
handle_index++;
}
// Check for next thread to schedule
// Change the thread state to waiting if blocking on all handles...
if (wait_thread || wait_all_succeeded) {
// Create an event to wake the thread up after the specified nanosecond delay has passed
Kernel::WakeThreadAfterDelay(Kernel::GetCurrentThread(), nano_seconds);
Kernel::GetCurrentThread()->SetWaitAll(wait_all);
HLE::Reschedule(__func__);
// NOTE: output of this SVC will be set later depending on how the thread resumes
return RESULT_DUMMY.raw;
}
// Acquire objects if we did not wait...
for (int i = 0; i < handle_count; ++i) {
auto object = Kernel::g_handle_table.GetWaitObject(handles[i]);
// Acquire the object if it is not waiting...
if (!object->ShouldWait()) {
object->Acquire();
// If this was the first non-waiting object and 'wait_all' is false, don't acquire
// any other objects
if (!wait_all)
break;
}
}
// TODO(bunnei): If 'wait_all' is true, this is probably wrong. However, real hardware does
// not seem to set it to any meaningful value.
*out = wait_all ? 0 : handle_index;
return RESULT_SUCCESS.raw;
}