gdb调试linux可执行程序

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gdb调试程序例子：

[root@localhost CSwapServer_dist]# gdb CSwapServer

GNU gdb (GDB) Red Hat Enterprise Linux (7.2-83.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/artogrid/workspace/deploy/CSwapServer_dist/CSwapServer...done.
(gdb) l
11 #include "service/send_service.h"
12 #include "service/service_manager.h"
13 #include "service/publish_manager.h"
14 #include "engine/qpid_engine.h"
15 #include "config.h"
16 #include <boost/thread.hpp>
17
18 int main( int argc, char * argv[] )
19 {
20 engine::qpid::EngineInitializer qpid_engine;
(gdb)
21
......
58 ServiceManager* service_manager = ServiceManager::singleton();
59 if (!service_manager->init(conn)) {
60 return -2;
(gdb) b 59
Breakpoint 1 at 0x42d1d7: file main.cpp, line 59.
(gdb) r
Starting program: /home/artogrid/workspace/deploy/CSwapServer_dist/CSwapServer
[Thread debugging using libthread_db enabled]
2015-11-13 18:14:56,754 [0x7ffff7fdb7a0] INFO onnectionManager - qpid url: 127.0.0.1
[New Thread 0x7ffff377d700 (LWP 27455)]
[New Thread 0x7ffff2d7c700 (LWP 27456)]
2015-11-13 18:14:56,774 [0x7ffff7fdb7a0] INFO onnectionManager - qpid url: 127.0.0.1
[New Thread 0x7ffff237b700 (LWP 27457)]
[New Thread 0x7ffff197a700 (LWP 27458)]
2015-11-13 18:14:56,783 [0x7ffff7fdb7a0] INFO CSwap - Send Service return queue: Queue.CSwap.Main.1
[New Thread 0x7ffff0f79700 (LWP 27459)]
[New Thread 0x7fffe3fff700 (LWP 27460)]
[New Thread 0x7fffe35fe700 (LWP 27461)]

Breakpoint 1, main (argc=1, argv=0x7fffffffe498) at main.cpp:59
59 if (!service_manager->init(conn)) {
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.166.el6_7.3.x86_64 libgcc-4.4.7-16.el6.x86_64 libstdc++-4.4.7-16.el6.x86_64 libuuid-2.17.2-12.18.el6.x86_64 nss-softokn-freebl-3.14.3-23.el6_7.x86_64
(gdb) s
ServiceManager::init (this=0xc1a8e0, conn=0xc042e0) at service_manager.cpp:42
42 if (getService(conn, kServiceLogin) == NULL) {
(gdb) bt
#0 ServiceManager::init (this=0xc1a8e0, conn=0xc042e0) at service_manager.cpp:42
#1 0x000000000042d1ea in main (argc=1, argv=0x7fffffffe498) at main.cpp:59
(gdb) p service_manager
No symbol "service_manager" in current context.
(gdb) p conn
$1 = (sdbus::Connection *) 0xc042e0
(gdb) l
37 return singleton_;
38 }
39
40 bool ServiceManager::init(sdbus::Connection *conn)
41 {
42 if (getService(conn, kServiceLogin) == NULL) {
43 LOGGER_ERROR("create service failed in cswap server: " << kServiceLogin);
44 return false;
45 }
46
(gdb) finish
Run till exit from #0 ServiceManager::init (this=0xc1a8e0, conn=0xc042e0) at service_manager.cpp:42
[New Thread 0x7fffe2bfd700 (LWP 27464)]
[New Thread 0x7fffe21fc700 (LWP 27465)]
[New Thread 0x7fffe17fb700 (LWP 27466)]
[New Thread 0x7fffe0dfa700 (LWP 27467)]
[New Thread 0x7fffc7fff700 (LWP 27468)]
[New Thread 0x7fffc75fe700 (LWP 27469)]
[New Thread 0x7fffc6bfd700 (LWP 27470)]
[New Thread 0x7fffc61fc700 (LWP 27471)]
[New Thread 0x7fffc57fb700 (LWP 27472)]
[New Thread 0x7fffc4dfa700 (LWP 27473)]
2015-11-13 18:15:36,729 [0x7fffe21fc700] INFO BCBond.Service - Ignore 1 message.
2015-11-13 18:15:36,729 [0x7fffe21fc700] INFO BCBond.Service - Ignore 2 message.
2015-11-13 18:15:36,730 [0x7fffe21fc700] INFO BCBond.Service - Ignore 1 message.
2015-11-13 18:15:36,730 [0x7fffe21fc700] INFO BCBond.Service - Ignore 1 message.
2015-11-13 18:15:36,730 [0x7fffe21fc700] INFO BCBond.Service - Ignore 1 message.
2015-11-13 18:15:36,730 [0x7fffe21fc700] INFO BCBond.Service - Ignore 1 message.
[New Thread 0x7fffc43f9700 (LWP 27474)]
[New Thread 0x7fffc39f8700 (LWP 27475)]
0x000000000042d1ea in main (argc=1, argv=0x7fffffffe498) at main.cpp:59
59 if (!service_manager->init(conn)) {
Value returned is $2 = true
(gdb) bt
#0 0x000000000042d1ea in main (argc=1, argv=0x7fffffffe498) at main.cpp:59
(gdb) q
A debugging session is active.

Inferior 1 [process 27452] will be killed.

Quit anyway? (y or n) y

[root@localhost CSwapServer_dist]#

二. 指令解释

From：http://blog.csdn.net/ghostyu/article/details/8083228

file [filename]
装入想要调试的可执行文件

kill [filename]
终止正在调试的程序

break [file:]function
在(file文件的)function函数中设置一个断点

clear
删除一个断点，这个命令需要指定代码行或者函数名作为参数

run [arglist]
运行您的程序 (如果指定了arglist,则将arglist作为参数运行程序)

bt Backtrace: 显示程序堆栈信息

print expr
打印表达式的值

continue
继续运行您的程序 (在停止之后，比如在一个断点之后)

list
列出产生执行文件的源代码的一部分