| /** @file |
| |
| A brief file description |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you 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. |
| */ |
| |
| #include "tscore/ink_platform.h" |
| #include "tscore/ink_stack_trace.h" |
| #include "tscore/ink_args.h" |
| |
| #include <strings.h> |
| #include <cstdio> |
| #include <cstdlib> |
| #include <unistd.h> |
| |
| #ifndef STDERR_FILENO |
| #define STDERR_FILENO 2 |
| #endif |
| |
| #if TS_HAS_BACKTRACE |
| |
| #include <execinfo.h> /* for backtrace_symbols, etc. */ |
| #include <csignal> |
| |
| void |
| ink_stack_trace_dump() |
| { |
| int btl; |
| |
| // Recopy and re-terminate the app name in case it has been trashed. |
| const char *msg = " - STACK TRACE: \n"; |
| if (write(STDERR_FILENO, program_name, strlen(program_name)) == -1) { |
| return; |
| } |
| if (write(STDERR_FILENO, msg, strlen(msg)) == -1) { |
| return; |
| } |
| |
| // In certain situations you can get stuck in malloc waiting for a lock |
| // that your program held when it segfaulted. We set an alarm so that |
| // if this situation happens it will allow traffic_server to exit. |
| alarm(10); |
| |
| void *stack[INK_STACK_TRACE_MAX_LEVELS + 1]; |
| memset(stack, 0, sizeof(stack)); |
| if ((btl = backtrace(stack, INK_STACK_TRACE_MAX_LEVELS)) > 2) { |
| // dump the backtrace to stderr |
| backtrace_symbols_fd(stack + 2, btl - 2, STDERR_FILENO); |
| } |
| } |
| |
| #else /* !TS_HAS_BACKTRACE */ |
| |
| void |
| ink_stack_trace_dump() |
| { |
| const char msg[] = "ink_stack_trace_dump not implemented on this operating system\n"; |
| if (write(STDERR_FILENO, msg, sizeof(msg) - 1) == -1) |
| return; |
| } |
| |
| #endif /* TS_HAS_BACKTRACE */ |