| // 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 "dawn/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. |
| DAWN_ASSERT(!sHasPendingInjectedError); |
| sInjectedFailureIndex = index; |
| sHasPendingInjectedError = true; |
| } |
| |
| } // namespace dawn::native |