91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/****************************************************************************
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* libs/libc/misc/lib_execinfo.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <execinfo.h>
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#include <stdio.h>
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#include "libc.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static FAR char **backtrace_malloc(FAR void *const *buffer, int size)
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{
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size_t length = 0;
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if (size <= 0)
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{
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return NULL;
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}
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while (size-- > 0)
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{
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int ret = snprintf(NULL, 0, "%pS", *buffer++);
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if (ret < 0)
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{
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return NULL;
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}
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length += sizeof(FAR char *) + ret + 1;
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}
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return lib_malloc(length);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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FAR char **backtrace_symbols(FAR void *const *buffer, int size)
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{
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FAR char **syms;
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FAR char *buf;
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int i;
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syms = backtrace_malloc(buffer, size);
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if (syms != NULL)
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{
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buf = (FAR char *)&syms[size];
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for (i = 0; i < size; i++)
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{
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syms[i] = buf;
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buf += sprintf(buf, "%pS", buffer[i]);
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buf += 1;
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}
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}
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return syms;
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}
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void backtrace_symbols_fd(FAR void *const *buffer, int size, int fd)
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{
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int i;
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for (i = 0; i < size; i++)
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{
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dprintf(fd, "%pS\n", buffer[i]);
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}
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}
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