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/*
* Copyright (C) 2017 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.
*/
#pragma once
#include <log/log.h>
#include <unwindstack/AndroidUnwinder.h>
#include <memory>
class CallStack {
public:
// Create a callstack with the current thread's stack trace.
// Immediately dump it to logcat using the given logtag.
static void log(const char* logtag) noexcept {
unwindstack::AndroidLocalUnwinder unwinder;
unwindstack::AndroidUnwinderData data;
if (unwinder.Unwind(data)) {
for (size_t i = 2, c = data.frames.size(); i < c; i++) {
auto& frame = data.frames[i];
// Trim the first two frames.
frame.num -= 2;
__android_log_print(ANDROID_LOG_DEBUG, logtag, "%s",
unwinder.FormatFrame(frame).c_str());
}
}
}
};
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