解决老中医提出的不能 syncAwait 然后捕获异常的问题。测试用例见 test7 #43
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EvinceMoi
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Oct 21, 2024
Jackarain
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Jackarain
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简单的来说，就是
```c++
try
{
start_coro(some_coro_that_throw());
}
catch(...)
{
这里抓不到异常
}
```
原因是 start_coro 实际上同 asio 的 co_spawn 一样，分叉了。
这样就没办法抓异常了，除非修改some_coro_that_throw()本身的代码。
如果是
```c++
co_await start_coro(some_coro_that_throw());
```
固然这样写，就抓的到异常了。但是在非协程上下文里，就无法使用了。
因此需要一种在非协程上下文环境里，同步等待协程的方式，并且能抓到异常。
所以这个补丁就是新增了一个 sync_await() 函数。具体使用就是
```c++
void 常规函数()
{
try
{
sync_await(some_coro_that_throw());
}
catch(...)
{
这里能抓到异常
}
}
```
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|
修改好了 |
Jackarain
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Oct 26, 2024
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先提交下。有问题了留言。