/*
* 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
#if __BIONIC_AVAILABILITY_GUARD(33 )
/**
* [ 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 33 .
*/
int backtrace(void * _Nonnull * _Nonnull buffer, int size) __INTRODUCED_IN(33 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(33 )
/**
* [ 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 33 .
*/
char * _Nullable * _Nullable backtrace_symbols(void * _Nonnull const * _Nonnull buffer, int size) __INTRODUCED_IN(33 );
#endif
#if __BIONIC_AVAILABILITY_GUARD(33 )
/**
* [ 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 33 .
*/
void backtrace_symbols_fd(void * _Nonnull const * _Nonnull buffer, int size, int fd) __INTRODUCED_IN(33 );
#endif
__END_DECLS
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