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DANGER DANGER. Switching to global critical region.

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This changes almost all locks held by guest threads to use a single global
critical region. This emulates the behavior on the PPC of disabling
interrupts (by calls like KeRaiseIrqlToDpcLevel or masking interrupts),
and prevents deadlocks from occuring when threads are suspended or
otherwise blocked.
This has performance implications and a pass is needed to ensure the
locking is as granular as possible. It could also break everything
because it's fundamentally unsound. We'll see.
This commit is contained in:
Ben Vanik
2015-09-06 09:30:54 -07:00
parent 33270cd2a0
commit 3c96b6fa0a
50 changed files with 271 additions and 219 deletions
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6
src/xenia/kernel/xobject.cc
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@@ -227,7 +227,7 @@ X_STATUS XObject::WaitMultiple(uint32_t count, XObject** objects,
}
uint8_t* XObject::CreateNative(uint32_t size) {
std::lock_guard<xe::recursive_mutex> lock(kernel_state_->object_mutex());
auto global_lock = xe::global_critical_region::AcquireDirect();
uint32_t total_size = size + sizeof(X_OBJECT_HEADER);
@@ -255,7 +255,7 @@ uint8_t* XObject::CreateNative(uint32_t size) {
}
void XObject::SetNativePointer(uint32_t native_ptr, bool uninitialized) {
std::lock_guard<xe::recursive_mutex> lock(kernel_state_->object_mutex());
auto global_lock = xe::global_critical_region::AcquireDirect();
// If hit: We've already setup the native ptr with CreateNative!
assert_zero(guest_object_ptr_);
@@ -289,7 +289,7 @@ object_ref<XObject> XObject::GetNativeObject(KernelState* kernel_state,
// We identify this by checking the low bit of wait_list_blink - if it's 1,
// we have already put our pointer in there.
std::lock_guard<xe::recursive_mutex> lock(kernel_state->object_mutex());
auto global_lock = xe::global_critical_region::AcquireDirect();
auto header = reinterpret_cast<X_DISPATCH_HEADER*>(native_ptr);