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kernel/thread: Use a regular pointer for the owner/current process

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There's no real need to use a shared pointer in these cases, and only
makes object management more fragile in terms of how easy it would be to
introduce cycles. Instead, just do the simple thing of using a regular
pointer. Much of this is just a hold-over from citra anyways.

It also doesn't make sense from a behavioral point of view for a
process' thread to prolong the lifetime of the process itself (the
process is supposed to own the thread, not the other way around).
This commit is contained in:
Lioncash 2018-10-10 00:42:10 -04:00
parent 5461b21c7a
commit 5c0408596f
10 changed files with 41 additions and 39 deletions
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8
src/core/hle/kernel/thread.cpp
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@ -194,7 +194,7 @@ static void ResetThreadContext(Core::ARM_Interface::ThreadContext& context, VAdd
ResultVal<SharedPtr<Thread>> Thread::Create(KernelCore& kernel, std::string name, VAddr entry_point,
u32 priority, u64 arg, s32 processor_id,
VAddr stack_top, SharedPtr<Process> owner_process) {
VAddr stack_top, Process& owner_process) {
// Check if priority is in ranged. Lowest priority -> highest priority id.
if (priority > THREADPRIO_LOWEST) {
LOG_ERROR(Kernel_SVC, "Invalid thread priority: {}", priority);
@ -208,7 +208,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(KernelCore& kernel, std::string name
// TODO(yuriks): Other checks, returning 0xD9001BEA
if (!Memory::IsValidVirtualAddress(*owner_process, entry_point)) {
if (!Memory::IsValidVirtualAddress(owner_process, entry_point)) {
LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:016X}", name, entry_point);
// TODO (bunnei): Find the correct error code to use here
return ResultCode(-1);
@ -232,7 +232,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(KernelCore& kernel, std::string name
thread->wait_handle = 0;
thread->name = std::move(name);
thread->callback_handle = kernel.ThreadWakeupCallbackHandleTable().Create(thread).Unwrap();
thread->owner_process = owner_process;
thread->owner_process = &owner_process;
thread->scheduler = Core::System::GetInstance().Scheduler(processor_id).get();
thread->scheduler->AddThread(thread, priority);
thread->tls_address = thread->owner_process->MarkNextAvailableTLSSlotAsUsed(*thread);
@ -264,7 +264,7 @@ SharedPtr<Thread> SetupMainThread(KernelCore& kernel, VAddr entry_point, u32 pri
// Initialize new "main" thread
const VAddr stack_top = owner_process.VMManager().GetTLSIORegionEndAddress();
auto thread_res = Thread::Create(kernel, "main", entry_point, priority, 0, THREADPROCESSORID_0,
stack_top, &owner_process);
stack_top, owner_process);
SharedPtr<Thread> thread = std::move(thread_res).Unwrap();