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// Copyright 2019 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/ErrorInjector.h"
#include "common/Assert.h"
#include "dawn_native/DawnNative.h"
namespace dawn_native {
namespace {
bool sIsEnabled = false;
uint64_t sNextIndex = 0;
uint64_t sInjectedFailureIndex = 0;
bool sHasPendingInjectedError = false;
} // anonymous namespace
void EnableErrorInjector() {
sIsEnabled = true;
}
void DisableErrorInjector() {
sIsEnabled = false;
}
void ClearErrorInjector() {
sNextIndex = 0;
sHasPendingInjectedError = false;
}
bool ErrorInjectorEnabled() {
return sIsEnabled;
}
uint64_t AcquireErrorInjectorCallCount() {
uint64_t count = sNextIndex;
ClearErrorInjector();
return count;
}
bool ShouldInjectError() {
uint64_t index = sNextIndex++;
if (sHasPendingInjectedError && index == sInjectedFailureIndex) {
sHasPendingInjectedError = false;
return true;
}
return false;
}
void InjectErrorAt(uint64_t index) {
// Only one error can be injected at a time.
ASSERT(!sHasPendingInjectedError);
sInjectedFailureIndex = index;
sHasPendingInjectedError = true;
}
} // namespace dawn_native