/*
 * Copyright (c) 2014 The CyanogenMod 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.
 */

/*
 * Returns -1
 */
ssize_t unwind_backtrace(void* backtrace, size_t ignore_depth, size_t max_depth);

/*
 * Returns -1
 */
ssize_t unwind_backtrace_thread(pid_t tid, void* backtrace,
        size_t ignore_depth, size_t max_depth);

/*
 * Returns -1
 */
ssize_t unwind_backtrace_ptrace(pid_t tid, const void* context,
        void* backtrace, size_t ignore_depth, size_t max_depth);

/*
 * Does nothing
 */
void get_backtrace_symbols(const void* backtrace, size_t frames,
        void* backtrace_symbols);

/*
 * Does nothing
 */
void get_backtrace_symbols_ptrace(const void* context,
        const void* backtrace, size_t frames,
        void* backtrace_symbols);

/*
 * Does nothing
 */
void free_backtrace_symbols(void* backtrace_symbols, size_t frames);

/**
 * Writes 0 to first byte of buffer, if buffer > 0 bytes long
 */
void format_backtrace_line(unsigned frameNumber, const void* frame,
        const void* symbol, char* buffer, size_t bufferSize);