Mirrors/yuzu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

WaitSynchronizationN: Refactor to fix several bugs

Browse source 
- Separate wait checking from waiting the current thread
- Resume thread when wait_all=true only if all objects are available at once
- Set output to correct wait object index when there are duplicate handles
This commit is contained in:
bunnei 2015-01-18 01:27:46 -05:00
parent aa01c57ae9
commit 6643673f28
8 changed files with 75 additions and 78 deletions
Download patch file Download diff file Expand all files Collapse all files

61
src/core/hle/kernel/thread.cpp
View file

@ -22,11 +22,11 @@
namespace Kernel {
ResultVal<bool> Thread::Wait(unsigned index) {
ResultVal<bool> Thread::Wait(bool wait_thread) {
const bool wait = status != THREADSTATUS_DORMANT;
if (wait) {
if (wait && wait_thread) {
AddWaitingThread(GetCurrentThread());
WaitCurrentThread_WaitSynchronization(WAITTYPE_THREADEND, this, index);
WaitCurrentThread_WaitSynchronization(WAITTYPE_THREADEND, this);
}
return MakeResult<bool>(wait);
@ -97,7 +97,7 @@ 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) {
for (auto itr = thread->wait_objects.begin(); itr != thread->wait_objects.end(); ++itr) {
if (itr->first == wait_object)
if (*itr == wait_object)
return CheckWaitType(thread, type);
}
return false;
@ -234,16 +234,7 @@ void WaitCurrentThread_WaitSynchronization(WaitType wait_type, WaitObject* wait_
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));
thread->wait_objects.push_back(wait_object);
ChangeThreadState(thread, ThreadStatus(THREADSTATUS_WAIT | (thread->status & THREADSTATUS_SUSPEND)));
}
@ -288,31 +279,35 @@ void Thread::ReleaseFromWait(WaitObject* wait_object) {
return;
}
// Remove this thread from the wait_object
// Remove this thread from the waiting object's thread list
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 = 0;
bool wait_all_failed = false; // Will be set to true if any object is unavailable
// Iterate through all waiting objects to check availability...
for (auto itr = wait_objects.begin(); itr != wait_objects.end(); ++itr) {
auto res = (*itr)->Wait(false);
if (*res && res.Succeeded())
wait_all_failed = true;
// The output should be the last index of wait_object
if (*itr == wait_object)
index = itr - wait_objects.begin();
}
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()) {
// If we are waiting on all objects...
if (wait_all) {
// Resume the thread only if all are available...
if (!wait_all_failed) {
SetReturnValue(RESULT_SUCCESS, -1);
ResumeFromWait();
}
} else {
// Otherwise, resume
SetReturnValue(RESULT_SUCCESS, index);
ResumeFromWait();
}
}
@ -324,7 +319,7 @@ void Thread::ResumeFromWait() {
// Remove this thread from all other WaitObjects
for (auto wait_object : wait_objects)
wait_object.first->RemoveWaitingThread(this);
wait_object->RemoveWaitingThread(this);
wait_objects.clear();