66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "TraceProviderFuchsia.h"
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#include <log/log.h>
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#include <lib/async-loop/default.h>
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#include <lib/async/cpp/task.h>
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#include <lib/fdio/directory.h>
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#include <lib/zx/channel.h>
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#include "services/service_connector.h"
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TraceProviderFuchsia::~TraceProviderFuchsia() {
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if (mTraceProvider) {
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async::PostTask(mLoop.dispatcher(), [this]() {
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// trace_provider_.reset() needs to run on loop_'s dispatcher or
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// else its teardown can be racy and crash.
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mTraceProvider.reset();
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// Run Quit() in the loop to ensure this task executes before
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// JoinThreads() returns and the destructor finishes.
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mLoop.Quit();
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});
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} else {
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mLoop.Quit();
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}
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mLoop.JoinThreads();
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}
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TraceProviderFuchsia::TraceProviderFuchsia()
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: mLoop(&kAsyncLoopConfigNeverAttachToThread) {}
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bool TraceProviderFuchsia::Initialize() {
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// Connect to fuchsia.tracing.provider.Registry service.
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zx_handle_t client_channel =
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GetConnectToServiceFunction()("/svc/fuchsia.tracing.provider.Registry");
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if (client_channel == ZX_HANDLE_INVALID) {
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ALOGE("Failed to connect to tracing provider service");
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return false;
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}
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zx_status_t status = mLoop.StartThread();
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if (status != ZX_OK) {
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ALOGE("Failed to start async loop: %d", status);
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return false;
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}
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mTraceProvider = std::make_unique<trace::TraceProvider>(
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zx::channel(client_channel), mLoop.dispatcher());
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return true;
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}
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