56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
|
|
* 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 <mediautils/Library.h>
|
|
#include <mediautils/MediaUtilsDelayed.h>
|
|
#include "MediaUtilsDelayedLibrary.h"
|
|
|
|
#define LOG_TAG "MediaUtilsDelayed"
|
|
#include <utils/Log.h>
|
|
#include <memory>
|
|
|
|
namespace android::mediautils {
|
|
|
|
namespace {
|
|
// Specific implementation details for MediaUtils Delayed Library.
|
|
|
|
// The following use static Meyer's singleton caches instead of letting
|
|
// refcounted management as provided above. This is for speed.
|
|
std::shared_ptr<void> getDelayedLibrary() {
|
|
static std::shared_ptr<void> library = loadLibrary(MEDIAUTILS_DELAYED_LIBRARY_NAME);
|
|
return library;
|
|
}
|
|
|
|
// Get the delayed dispatch table. This is refcounted and keeps the underlying library alive.
|
|
std::shared_ptr<delayed_library::DelayedDispatchTable> getDelayedDispatchTable() {
|
|
static auto delayedDispatchTable =
|
|
getObjectFromLibrary<delayed_library::DelayedDispatchTable>(
|
|
MEDIAUTILS_DELAYED_DISPATCH_TABLE_SYMBOL_NAME, getDelayedLibrary());
|
|
return delayedDispatchTable;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
// Public implementations of methods here.
|
|
|
|
std::string getCallStackStringForTid(pid_t tid) {
|
|
auto delayedDispatchTable = getDelayedDispatchTable();
|
|
if (!delayedDispatchTable) return {}; // on failure, return empty string
|
|
return delayedDispatchTable->getCallStackStringForTid(tid);
|
|
}
|
|
|
|
} // android::mediautils
|