multithreading - 在线程中处理异常

Question

我的一个线程进入了调试器。我想切换到它，期待堆栈跟踪，选择重新启动等......我该怎么做？

我正在使用 bordeaux-threads .

Answer 1

如果您使用 SLIME，它应该会自动工作。否则，这取决于您的实现。在SBCL，(SB-THREAD:RELEASE-FOREGROUND)应该让另一个线程使用终端。

SBCL manual, 12.8 Sessions/Debugging

Within a single session, threads arbitrate between themselves for the user's attention. A thread may be in one of three notional states: foreground, background, or stopped. When a background process attempts to print a repl prompt or to enter the debugger, it will stop and print a message saying that it has stopped. The user at his leisure may switch to that thread to find out what it needs. If a background thread enters the debugger, selecting any restart will put it back into the background before it resumes. Arbitration for the input stream is managed by calls to sb-thread:get-foreground (which may block) and sb-thread:release-foreground.