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// Copyright 2019 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#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