mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-10-23 10:15:53 +00:00
083a1ce2bf
This changes RefCounted to increment and decrement the refcount by steps of 2, so that a 1 bit payload can be inlined in the refcount. This avoids using a whole boolean + padding (4 or 8 bytes in general) to know if objects are errors. Fixes a longstanding optimization TODO. BUG=dawn:105 Change-Id: I5e8f66465d23772fb6082ea3e0d5d4aba2132648 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/13680 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Kai Ninomiya <kainino@chromium.org>
41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
// Copyright 2018 The Dawn Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "dawn_native/ObjectBase.h"
|
|
|
|
namespace dawn_native {
|
|
|
|
static constexpr uint64_t kErrorPayload = 0;
|
|
static constexpr uint64_t kNotErrorPayload = 1;
|
|
|
|
ObjectBase::ObjectBase(DeviceBase* device) : RefCounted(kNotErrorPayload), mDevice(device) {
|
|
}
|
|
|
|
ObjectBase::ObjectBase(DeviceBase* device, ErrorTag)
|
|
: RefCounted(kErrorPayload), mDevice(device) {
|
|
}
|
|
|
|
ObjectBase::~ObjectBase() {
|
|
}
|
|
|
|
DeviceBase* ObjectBase::GetDevice() const {
|
|
return mDevice;
|
|
}
|
|
|
|
bool ObjectBase::IsError() const {
|
|
return GetRefCountPayload() == kErrorPayload;
|
|
}
|
|
|
|
} // namespace dawn_native
|