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kernel: Fix svcWaitSynch to always acquire requested wait objects.

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This commit is contained in:
bunnei 2015-06-07 23:39:37 -04:00
parent f1ff0fbf07
commit 71e8822d23
9 changed files with 68 additions and 113 deletions
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26
src/core/hle/svc.cpp
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@ -40,9 +40,6 @@ const ResultCode ERR_NOT_FOUND(ErrorDescription::NotFound, ErrorModule::Kernel,
const ResultCode ERR_PORT_NAME_TOO_LONG(ErrorDescription(30), ErrorModule::OS,
ErrorSummary::InvalidArgument, ErrorLevel::Usage); // 0xE0E0181E
/// An invalid result code that is meant to be overwritten when a thread resumes from waiting
const ResultCode RESULT_INVALID(0xDEADC0DE);
enum ControlMemoryOperation {
MEMORY_OPERATION_HEAP = 0x00000003,
MEMORY_OPERATION_GSP_HEAP = 0x00010003,
@ -143,6 +140,10 @@ static ResultCode CloseHandle(Handle handle) {
/// Wait for a handle to synchronize, timeout after the specified nanoseconds
static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
auto object = Kernel::g_handle_table.GetWaitObject(handle);
Kernel::Thread* thread = Kernel::GetCurrentThread();
thread->waitsynch_waited = false;
if (object == nullptr)
return ERR_INVALID_HANDLE;
@ -154,14 +155,14 @@ static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
// Check for next thread to schedule
if (object->ShouldWait()) {
object->AddWaitingThread(Kernel::GetCurrentThread());
object->AddWaitingThread(thread);
Kernel::WaitCurrentThread_WaitSynchronization({ object }, false, false);
// Create an event to wake the thread up after the specified nanosecond delay has passed
Kernel::GetCurrentThread()->WakeAfterDelay(nano_seconds);
thread->WakeAfterDelay(nano_seconds);
// NOTE: output of this SVC will be set later depending on how the thread resumes
return RESULT_INVALID;
return HLE::RESULT_INVALID;
}
object->Acquire();
@ -173,6 +174,9 @@ static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all, s64 nano_seconds) {
bool wait_thread = !wait_all;
int handle_index = 0;
Kernel::Thread* thread = Kernel::GetCurrentThread();
bool was_waiting = thread->waitsynch_waited;
thread->waitsynch_waited = false;
// Check if 'handles' is invalid
if (handles == nullptr)
@ -190,6 +194,9 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
// necessary
if (handle_count != 0) {
bool selected = false; // True once an object has been selected
Kernel::SharedPtr<Kernel::WaitObject> wait_object;
for (int i = 0; i < handle_count; ++i) {
auto object = Kernel::g_handle_table.GetWaitObject(handles[i]);
if (object == nullptr)
@ -204,10 +211,11 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
wait_thread = true;
} else {
// Do not wait on this object, check if this object should be selected...
if (!wait_all && !selected) {
if (!wait_all && (!selected || (wait_object == object && was_waiting))) {
// Do not wait the thread
wait_thread = false;
handle_index = i;
wait_object = object;
selected = true;
}
}
@ -241,7 +249,7 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
Kernel::GetCurrentThread()->WakeAfterDelay(nano_seconds);
// NOTE: output of this SVC will be set later depending on how the thread resumes
return RESULT_INVALID;
return HLE::RESULT_INVALID;
}
// Acquire objects if we did not wait...
@ -261,7 +269,7 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
// 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;
*out = handle_count != 0 ? (wait_all ? -1 : handle_index) : 0;
return RESULT_SUCCESS;
}