platform_system_core/libcorkscrew/backtrace-helper.c

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/*
* Copyright (C) 2011 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.
*/
#define LOG_TAG "Corkscrew"
//#define LOG_NDEBUG 0
#include "backtrace-helper.h"
#include <cutils/log.h>
backtrace_frame_t* add_backtrace_entry(uintptr_t pc, backtrace_frame_t* backtrace,
size_t ignore_depth, size_t max_depth,
size_t* ignored_frames, size_t* returned_frames) {
if (*ignored_frames < ignore_depth) {
*ignored_frames += 1;
return NULL;
}
if (*returned_frames >= max_depth) {
return NULL;
}
backtrace_frame_t* frame = &backtrace[*returned_frames];
frame->absolute_pc = pc;
frame->stack_top = 0;
frame->stack_size = 0;
*returned_frames += 1;
return frame;
}