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WaitProcessWideKeyAtomic: Handle case where condition variable was already created.

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This commit is contained in:
bunnei 2018-02-04 12:30:51 -05:00
parent 647364db8f
commit 0b6b147939
3 changed files with 17 additions and 13 deletions
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3
src/core/hle/kernel/condition_variable.cpp
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@ -15,13 +15,12 @@ ConditionVariable::ConditionVariable() {}
ConditionVariable::~ConditionVariable() {}
ResultVal<SharedPtr<ConditionVariable>> ConditionVariable::Create(VAddr guest_addr,
VAddr mutex_addr,
std::string name) {
SharedPtr<ConditionVariable> condition_variable(new ConditionVariable);
condition_variable->name = std::move(name);
condition_variable->guest_addr = guest_addr;
condition_variable->mutex_addr = mutex_addr;
condition_variable->mutex_addr = 0;
// Condition variables are referenced by guest address, so track this in the kernel
g_object_address_table.Insert(guest_addr, condition_variable);

4
src/core/hle/kernel/condition_variable.h
View file

@ -19,12 +19,10 @@ public:
* Creates a condition variable.
* @param guest_addr Address of the object tracking the condition variable in guest memory. If
* specified, this condition variable will update the guest object when its state changes.
* @param mutex_addr Optional address of a guest mutex associated with this condition variable,
* used by the OS for implementing events.
* @param name Optional name of condition variable.
* @return The created condition variable.
*/
static ResultVal<SharedPtr<ConditionVariable>> Create(VAddr guest_addr, VAddr mutex_addr = 0,
static ResultVal<SharedPtr<ConditionVariable>> Create(VAddr guest_addr,
std::string name = "Unknown");
std::string GetTypeName() const override {

21
src/core/hle/kernel/svc.cpp
View file

@ -612,20 +612,29 @@ static ResultCode WaitProcessWideKeyAtomic(VAddr mutex_addr, VAddr condition_var
mutex->name = Common::StringFromFormat("mutex-%llx", mutex_addr);
}
ASSERT(mutex->GetOwnerHandle() == thread_handle);
SharedPtr<ConditionVariable> condition_variable =
g_object_address_table.Get<ConditionVariable>(condition_variable_addr);
if (!condition_variable) {
// Create a new condition_variable for the specified address if one does not already exist
condition_variable =
ConditionVariable::Create(condition_variable_addr, mutex_addr).Unwrap();
condition_variable = ConditionVariable::Create(condition_variable_addr).Unwrap();
condition_variable->name =
Common::StringFromFormat("condition-variable-%llx", condition_variable_addr);
}
ASSERT(condition_variable->GetAvailableCount() == 0);
if (condition_variable->mutex_addr) {
// Previously created the ConditionVariable using WaitProcessWideKeyAtomic, verify
// everything is correct
ASSERT(condition_variable->mutex_addr == mutex_addr);
} else {
// Previously created the ConditionVariable using SignalProcessWideKey, set the mutex
// associated with it
condition_variable->mutex_addr = mutex_addr;
}
if (mutex->GetOwnerHandle()) {
// Release the mutex if the current thread is holding it
mutex->Release(thread.get());
}
auto wakeup_callback = [mutex, nano_seconds](ThreadWakeupReason reason,
SharedPtr<Thread> thread,
@ -667,8 +676,6 @@ static ResultCode WaitProcessWideKeyAtomic(VAddr mutex_addr, VAddr condition_var
CASCADE_CODE(
WaitSynchronization1(condition_variable, thread.get(), nano_seconds, wakeup_callback));
mutex->Release(thread.get());
return RESULT_SUCCESS;
}