74 lines
3 KiB
C
74 lines
3 KiB
C
/*
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* Copyright (C) 2021 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <sys/cdefs.h>
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/**
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* @file execinfo.h
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* @brief Functions to do in process backtracing.
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*/
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__BEGIN_DECLS
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/**
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* [backtrace(3)](https://man7.org/linux/man-pages/man3/backtrace.3.html)
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* Saves a backtrace for the current call in the array pointed to by buffer.
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* "size" indicates the maximum number of void* pointers that can be set.
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*
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* Returns the number of addresses stored in "buffer", which is not greater
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* than "size". If the return value is equal to "size" then the number of
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* addresses may have been truncated.
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*
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* Available since API level 33.
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*/
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int backtrace(void* _Nonnull * _Nonnull buffer, int size) __INTRODUCED_IN(33);
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/**
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* [backtrace_symbols(3)](https://man7.org/linux/man-pages/man3/backtrace_symbols.3.html)
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* Given an array of void* pointers, translate the addresses into an array
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* of strings that represent the backtrace.
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*
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* Returns a pointer to allocated memory, on error NULL is returned. It is
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* the responsibility of the caller to free the returned memory.
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*
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* Available since API level 33.
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*/
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char* _Nullable * _Nullable backtrace_symbols(void* _Nonnull const* _Nonnull buffer, int size) __INTRODUCED_IN(33);
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/**
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* [backtrace_symbols_fd(3)](https://man7.org/linux/man-pages/man3/backtrace_symbols_fd.3.html)
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* Given an array of void* pointers, translate the addresses into an array
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* of strings that represent the backtrace and write to the file represented
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* by "fd". The file is written such that one line equals one void* address.
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*
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* Available since API level 33.
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*/
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void backtrace_symbols_fd(void* _Nonnull const* _Nonnull buffer, int size, int fd) __INTRODUCED_IN(33);
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__END_DECLS
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