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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* 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.
*/
#ifndef FLB_STACKTRACE_H
#define FLB_STACKTRACE_H
#include <fluent-bit/flb_info.h>
/* Libbacktrace support */
#if defined(FLB_HAVE_LIBBACKTRACE)
#include <backtrace.h>
#include <backtrace-supported.h>
struct flb_stacktrace {
struct backtrace_state *state;
int error;
int line;
};
static void flb_stacktrace_error_callback(void *data,
const char *msg, int errnum)
{
struct flb_stacktrace *ctx = data;
fprintf(stderr, "ERROR: %s (%d)", msg, errnum);
ctx->error = 1;
}
static int flb_stacktrace_print_callback(void *data, uintptr_t pc,
const char *filename, int lineno,
const char *function)
{
struct flb_stacktrace *p = data;
fprintf(stderr, "#%-2i 0x%-17lx in %s() at %s:%d\n",
p->line,
(unsigned long) pc,
function == NULL ? "???" : function,
filename == NULL ? "???" : filename + sizeof(FLB_SOURCE_DIR),
lineno);
p->line++;
return 0;
}
static inline void flb_stacktrace_init(char *prog, struct flb_stacktrace *st)
{
memset(st, '\0', sizeof(struct flb_stacktrace));
st->state = backtrace_create_state(prog,
BACKTRACE_SUPPORTS_THREADS,
flb_stacktrace_error_callback, NULL);
}
static inline void flb_stacktrace_print(struct flb_stacktrace *st)
{
backtrace_full(st->state, 3, flb_stacktrace_print_callback,
flb_stacktrace_error_callback, st);
}
#endif
#endif
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