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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/ErrorScope.h"
#include "common/Assert.h"
namespace dawn_native {
namespace {
wgpu::ErrorType ErrorFilterToErrorType(wgpu::ErrorFilter filter) {
switch (filter) {
case wgpu::ErrorFilter::None:
return wgpu::ErrorType::NoError;
case wgpu::ErrorFilter::Validation:
return wgpu::ErrorType::Validation;
case wgpu::ErrorFilter::OutOfMemory:
return wgpu::ErrorType::OutOfMemory;
}
UNREACHABLE();
}
} // namespace
ErrorScope::ErrorScope(wgpu::ErrorFilter errorFilter)
: mMatchedErrorType(ErrorFilterToErrorType(errorFilter)) {
}
wgpu::ErrorType ErrorScope::GetErrorType() const {
return mCapturedError;
}
const char* ErrorScope::GetErrorMessage() const {
return mErrorMessage.c_str();
}
void ErrorScopeStack::Push(wgpu::ErrorFilter filter) {
mScopes.push_back(ErrorScope(filter));
}
ErrorScope ErrorScopeStack::Pop() {
ASSERT(!mScopes.empty());
ErrorScope scope = std::move(mScopes.back());
mScopes.pop_back();
return scope;
}
bool ErrorScopeStack::Empty() const {
return mScopes.empty();
}
bool ErrorScopeStack::HandleError(wgpu::ErrorType type, const char* message) {
ASSERT(type != wgpu::ErrorType::NoError);
for (auto it = mScopes.rbegin(); it != mScopes.rend(); ++it) {
if (it->mMatchedErrorType != type) {
// Error filter does not match. Move on to the next scope.
continue;
}
// Filter matches.
// Record the error if the scope doesn't have one yet.
if (it->mCapturedError == wgpu::ErrorType::NoError) {
it->mCapturedError = type;
it->mErrorMessage = message;
}
if (type == wgpu::ErrorType::DeviceLost) {
if (it->mCapturedError != wgpu::ErrorType::DeviceLost) {
// DeviceLost overrides any other error that is not a DeviceLost.
it->mCapturedError = type;
it->mErrorMessage = message;
}
} else {
// Errors that are not device lost are captured and stop propogating.
return true;
}
}
// The error was not captured.
return false;
}
} // namespace dawn_native