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core: hle: kernel: k_thread: Add KScopedDisableDispatch.

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This commit is contained in:
bunnei 2021-08-06 23:04:32 -07:00
parent 2b9560428b
commit 01af2f4162
2 changed files with 47 additions and 1 deletions
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17
src/core/hle/kernel/k_thread.cpp
View file

@ -188,7 +188,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
// Setup the stack parameters.
StackParameters& sp = GetStackParameters();
sp.cur_thread = this;
sp.disable_count = 1;
sp.disable_count = 0;
SetInExceptionHandler();
// Set thread ID.
@ -970,6 +970,9 @@ ResultCode KThread::Run() {
// Set our state and finish.
SetState(ThreadState::Runnable);
DisableDispatch();
return ResultSuccess;
}
}
@ -1054,4 +1057,16 @@ s32 GetCurrentCoreId(KernelCore& kernel) {
return GetCurrentThread(kernel).GetCurrentCore();
}
KScopedDisableDispatch::~KScopedDisableDispatch() {
if (GetCurrentThread(kernel).GetDisableDispatchCount() <= 1) {
auto scheduler = kernel.CurrentScheduler();
if (scheduler) {
scheduler->RescheduleCurrentCore();
}
} else {
GetCurrentThread(kernel).EnableDispatch();
}
}
} // namespace Kernel

31
src/core/hle/kernel/k_thread.h
View file

@ -450,16 +450,35 @@ public:
sleeping_queue = q;
}
[[nodiscard]] bool IsKernelThread() const {
return GetActiveCore() == 3;
}
[[nodiscard]] s32 GetDisableDispatchCount() const {
if (IsKernelThread()) {
// TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
return 1;
}
return this->GetStackParameters().disable_count;
}
void DisableDispatch() {
if (IsKernelThread()) {
// TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
return;
}
ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() >= 0);
this->GetStackParameters().disable_count++;
}
void EnableDispatch() {
if (IsKernelThread()) {
// TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
return;
}
ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() > 0);
this->GetStackParameters().disable_count--;
}
@ -752,4 +771,16 @@ public:
}
};
class KScopedDisableDispatch {
public:
explicit KScopedDisableDispatch(KernelCore& kernel_) : kernel{kernel_} {
GetCurrentThread(kernel).DisableDispatch();
}
~KScopedDisableDispatch();
private:
KernelCore& kernel;
};
} // namespace Kernel