编程调试
最后更新于：2022-04-02 06:30:39
# 编程调试
[TOC]
使用`Swoole`协程时，可以使用下面的方法进行调试
## GDB调试
#### 进入 gdb
~~~
gdb php test.php
~~~
#### gdbinit
~~~
(gdb) source /path/to/swoole-src/gdbinit
~~~
#### 设置断点
例如`co::sleep`函数
~~~
(gdb) b zim_swoole_coroutine_util_sleep
~~~
#### 打印当前进程的所有协程和状态
~~~
(gdb) co_list
coroutine 1 SW_CORO_YIELD
coroutine 2 SW_CORO_RUNNING
~~~
#### 打印当前运行时协程的调用栈
~~~
(gdb) co_bt
coroutine cid:[2]
[0x7ffff148a100] Swoole\Coroutine->sleep(0.500000) [internal function]
[0x7ffff148a0a0] {closure}() /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:7
[0x7ffff141e0c0] go(object[0x7ffff141e110]) [internal function]
[0x7ffff141e030] (main) /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:10
~~~
#### 打印指定协程id的调用战
~~~
(gdb) co_bt 1
[0x7ffff1487100] Swoole\Coroutine->sleep(0.500000) [internal function]
[0x7ffff14870a0] {closure}() /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:3
[0x7ffff141e0c0] go(object[0x7ffff141e110]) [internal function]
[0x7ffff141e030] (main) /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:10
~~~
#### 打印全局协程的状态
~~~
(gdb) co_status
stack_size: 2097152
call_stack_size: 1
active: 1
coro_num: 2
max_coro_num: 3000
peak_coro_num: 2
~~~
## PHP代码调试
遍历当前进程内的所有协程,并打印调用栈。
~~~
function Coroutine::listCoroutines() : Iterator
~~~
> 需要`4.1.0`或更高版本
* 返回迭代器，可使用`foreach`遍历，或使用`iterator_to_array`转为数组
~~~
$coros = Coroutine::listCoroutines();
foreach($coros as $cid)
{
var_dump(Coroutine::getBackTrace($cid));
}
~~~
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