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67 lines
1.8 KiB
67 lines
1.8 KiB
4 months ago
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/*
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* Copyright (C) 2013 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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#ifndef ANDROID_SERVERS_CAMERA_TRACES_H_
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#define ANDROID_SERVERS_CAMERA_TRACES_H_
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#include <utils/Errors.h>
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#include <utils/String16.h>
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#include <utils/Vector.h>
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namespace android {
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namespace camera3 {
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struct CameraTracesImpl;
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// Collect a list of the process's stack traces
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class CameraTraces {
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public:
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/**
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* Save the current stack trace for each thread in the process. At most
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* MAX_TRACES will be saved, after which the oldest traces will be discarded.
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*
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* <p>Use CameraTraces::dump to print out the traces.</p>
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*/
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static void saveTrace();
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/**
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* Prints all saved traces to the specified file descriptor.
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*
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* <p>Each line is indented by DUMP_INDENT spaces.</p>
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*/
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static status_t dump(int fd, const Vector<String16>& args);
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private:
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enum {
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// Don't collect more than 100 traces. Discard oldest.
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MAX_TRACES = 100,
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// Insert 2 spaces when dumping the traces
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DUMP_INDENT = 2,
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};
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CameraTraces();
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~CameraTraces();
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CameraTraces(CameraTraces& rhs);
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static CameraTracesImpl& sImpl;
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}; // class CameraTraces
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}; // namespace camera3
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}; // namespace android
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#endif // ANDROID_SERVERS_CAMERA_TRACES_H_
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