blob: b2a1b7e849455d010ba65240f3b504a27e30ae22 [file] [log] [blame]
/*
* Copyright (C) 2022 The Android Open Source Project
*
* 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 "Composer.h"
#include <android-base/logging.h>
#include <android/binder_ibinder_platform.h>
#include "Common.h"
namespace aidl::android::hardware::graphics::composer3::impl {
ndk::ScopedAStatus Composer::createClient(
std::shared_ptr<IComposerClient>* outClient) {
DEBUG_LOG("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mClientMutex);
const bool previousClientDestroyed = waitForClientDestroyedLocked(lock);
if (!previousClientDestroyed) {
ALOGE("%s: failed as composer client already exists", __FUNCTION__);
*outClient = nullptr;
return ToBinderStatus(HWC3::Error::NoResources);
}
auto client = ndk::SharedRefBase::make<ComposerClient>();
if (!client) {
ALOGE("%s: failed to init composer client", __FUNCTION__);
*outClient = nullptr;
return ToBinderStatus(HWC3::Error::NoResources);
}
auto error = client->init();
if (error != HWC3::Error::None) {
*outClient = nullptr;
return ToBinderStatus(error);
}
auto clientDestroyed = [this]() { onClientDestroyed(); };
client->setOnClientDestroyed(clientDestroyed);
mClient = client;
*outClient = client;
return ndk::ScopedAStatus::ok();
}
bool Composer::waitForClientDestroyedLocked(
std::unique_lock<std::mutex>& lock) {
if (!mClient.expired()) {
// In surface flinger we delete a composer client on one thread and
// then create a new client on another thread. Although surface
// flinger ensures the calls are made in that sequence (destroy and
// then create), sometimes the calls land in the composer service
// inverted (create and then destroy). Wait for a brief period to
// see if the existing client is destroyed.
constexpr const auto kTimeout = std::chrono::seconds(5);
mClientDestroyedCondition.wait_for(
lock, kTimeout, [this]() -> bool { return mClient.expired(); });
if (!mClient.expired()) {
ALOGW("%s: previous client was not destroyed", __FUNCTION__);
}
}
return mClient.expired();
}
void Composer::onClientDestroyed() {
std::lock_guard<std::mutex> lock(mClientMutex);
mClientDestroyedCondition.notify_all();
}
binder_status_t Composer::dump(int fd, const char** /*args*/,
uint32_t /*numArgs*/) {
DEBUG_LOG("%s", __FUNCTION__);
std::string output("TODO");
write(fd, output.c_str(), output.size());
return STATUS_OK;
}
ndk::ScopedAStatus Composer::getCapabilities(std::vector<Capability>* caps) {
DEBUG_LOG("%s", __FUNCTION__);
caps->clear();
caps->emplace_back(Capability::PRESENT_FENCE_IS_NOT_RELIABLE);
caps->emplace_back(Capability::BOOT_DISPLAY_CONFIG);
return ndk::ScopedAStatus::ok();
}
::ndk::SpAIBinder Composer::createBinder() {
DEBUG_LOG("%s", __FUNCTION__);
auto binder = BnComposer::createBinder();
AIBinder_setInheritRt(binder.get(), true);
return binder;
}
} // namespace aidl::android::hardware::graphics::composer3::impl