编程调试

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

  1. gdb php test.php

gdbinit

  1. (gdb) source /path/to/swoole-src/gdbinit

设置断点

例如 co::sleep 函数

  1. (gdb) b zim_swoole_coroutine_util_sleep

打印当前进程的所有协程和状态

  1. (gdb) co_list 
  2. coroutine 1 SW_CORO_YIELD
  3. coroutine 2 SW_CORO_RUNNING

打印当前运行时协程的调用栈

  1. (gdb) co_bt 
  2. coroutine cid:[2]
  3. [0x7ffff148a100] Swoole\Coroutine->sleep(0.500000) [internal function]
  4. [0x7ffff148a0a0] {closure}() /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:7 
  5. [0x7ffff141e0c0] go(object[0x7ffff141e110]) [internal function]
  6. [0x7ffff141e030] (main) /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:10

打印指定协程id的调用战

  1. (gdb) co_bt 1
  2. [0x7ffff1487100] Swoole\Coroutine->sleep(0.500000) [internal function]
  3. [0x7ffff14870a0] {closure}() /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:3 
  4. [0x7ffff141e0c0] go(object[0x7ffff141e110]) [internal function]
  5. [0x7ffff141e030] (main) /home/shiguangqi/php/swoole-src/examples/coroutine/exception/test.php:10

打印全局协程的状态

  1. (gdb) co_status 
  2.      stack_size: 2097152
  3.      call_stack_size: 1
  4.      active: 1
  5.      coro_num: 2
  6.      max_coro_num: 3000
  7.      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。

  1. 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
  1. $coros = Coroutine::listCoroutines();
  2. foreach($coros as $cid)
  3. {
  4.     var_dump(Coroutine::getBackTrace($cid));
  5. }