termux-packages/packages/libandroid-execinfo/execinfo.h

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2022-05-04 07:09:10 +02:00
/*
* Copyright (C) 2021 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#include <sys/cdefs.h>
/**
* @file execinfo.h
* @brief Functions to do in process backtracing.
*/
__BEGIN_DECLS
/**
* [backtrace(3)](https://man7.org/linux/man-pages/man3/backtrace.3.html)
* Saves a backtrace for the current call in the array pointed to by buffer.
* "size" indicates the maximum number of void* pointers that can be set.
*
* Returns the number of addresses stored in "buffer", which is not greater
* than "size". If the return value is equal to "size" then the number of
* addresses may have been truncated.
*
* Available since API level 24.
*/
int backtrace(void** buffer, int size) __INTRODUCED_IN(24);
/**
* [backtrace_symbols(3)](https://man7.org/linux/man-pages/man3/backtrace_symbols.3.html)
* Given an array of void* pointers, translate the addresses into an array
* of strings that represent the backtrace.
*
* Returns a pointer to allocated memory, on error NULL is returned. It is
* the responsibility of the caller to free the returned memory.
*
* Available since API level 24.
*/
char** backtrace_symbols(void* const* buffer, int size) __INTRODUCED_IN(24);
/**
* [backtrace_symbols_fd(3)](https://man7.org/linux/man-pages/man3/backtrace_symbols_fd.3.html)
* Given an array of void* pointers, translate the addresses into an array
* of strings that represent the backtrace and write to the file represented
* by "fd". The file is written such that one line equals one void* address.
*
* Available since API level 24.
*/
void backtrace_symbols_fd(void* const* buffer, int size, int fd) __INTRODUCED_IN(24);
__END_DECLS