78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
// Copyright 2017 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/RefCounted.h"
|
|
|
|
#include "common/Assert.h"
|
|
|
|
namespace dawn_native {
|
|
|
|
RefCounted::RefCounted() {
|
|
}
|
|
|
|
RefCounted::~RefCounted() {
|
|
}
|
|
|
|
void RefCounted::ReferenceInternal() {
|
|
ASSERT(mInternalRefs != 0);
|
|
|
|
// TODO(cwallez@chromium.org): what to do on overflow?
|
|
mInternalRefs++;
|
|
}
|
|
|
|
void RefCounted::ReleaseInternal() {
|
|
ASSERT(mInternalRefs != 0);
|
|
|
|
mInternalRefs--;
|
|
|
|
if (mInternalRefs == 0) {
|
|
ASSERT(mExternalRefs == 0);
|
|
// TODO(cwallez@chromium.org): would this work with custom allocators?
|
|
delete this;
|
|
}
|
|
}
|
|
|
|
uint32_t RefCounted::GetExternalRefs() const {
|
|
return mExternalRefs;
|
|
}
|
|
|
|
uint32_t RefCounted::GetInternalRefs() const {
|
|
return mInternalRefs;
|
|
}
|
|
|
|
void RefCounted::Reference() {
|
|
ASSERT(mInternalRefs != 0);
|
|
|
|
// mExternalRefs != 0 counts as one internal ref.
|
|
if (mExternalRefs == 0) {
|
|
ReferenceInternal();
|
|
}
|
|
|
|
// TODO(cwallez@chromium.org): what to do on overflow?
|
|
mExternalRefs++;
|
|
}
|
|
|
|
void RefCounted::Release() {
|
|
ASSERT(mInternalRefs != 0);
|
|
ASSERT(mExternalRefs != 0);
|
|
|
|
mExternalRefs--;
|
|
// mExternalRefs != 0 counts as one internal ref.
|
|
if (mExternalRefs == 0) {
|
|
ReleaseInternal();
|
|
}
|
|
}
|
|
|
|
} // namespace dawn_native
|