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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/mojo/services/mojo_media_log.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/threading/sequenced_task_runner_handle.h"
namespace media {
MojoMediaLog::MojoMediaLog(
mojo::PendingRemote<mojom::MediaLog> remote_media_log,
scoped_refptr<base::SequencedTaskRunner> task_runner)
: remote_media_log_(std::move(remote_media_log)),
task_runner_(std::move(task_runner)) {
DVLOG(1) << __func__;
}
MojoMediaLog::~MojoMediaLog() {
DVLOG(1) << __func__;
// Note that we're not invalidating the remote side. We're only invalidating
// anything that was cloned from us. Effectively, we're a log that just
// happens to operate via mojo.
InvalidateLog();
}
void MojoMediaLog::AddLogRecordLocked(std::unique_ptr<MediaLogRecord> event) {
DVLOG(2) << __func__;
DCHECK(event);
// Don't post unless we need to. Otherwise, we can order a log entry after
// our own destruction. While safe, this loses the message. This can happen,
// for example, when we're logging why a VideoDecoder failed to initialize.
// It will be destroyed synchronously when Initialize returns.
//
// Also, we post here, so this is the base case. :)
if (task_runner_->RunsTasksInCurrentSequence()) {
remote_media_log_->AddLogRecord(*event);
return;
}
// From other threads, we have little choice.
task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&MojoMediaLog::AddLogRecord,
weak_ptr_factory_.GetWeakPtr(), std::move(event)));
}
} // namespace media
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