On 4 March 2014 16:55, Greg Clayton <[email protected]> wrote:
> So the timing of when the process IO handler gets pushed seems to be the
> timing difference. On MacOSX, the IOHandlerProcessSTDIO gets pushed as we are
> handling the "process launch" or "process attach" and before it asks for
> another line, the IOHandlerProcessSTDIO is already pushed. Not so for the
> linux and free bsd case. Does that sound like what you are seeing?
Hi Greg,
I had a little time to look at this again this morning. Yes, what you
describe sounds like what I'm seeing:
1. ProcessFreeBSD::DoResume returns
2. (lldb) prompt is printed
3. Debugger::PushIOHandler is called
It's not yet clear to me how we should ensure the stdio IOHandler is
pushed prior to emitting the prompt. As a hack, I added a short sleep
in Process:PrivateResume, and that's sufficient to avoid the race:
diff --git a/source/Target/Process.cpp b/source/Target/Process.cpp
index 5fd73cb..a71fc14 100644
--- a/source/Target/Process.cpp
+++ b/source/Target/Process.cpp
@@ -3527,6 +3527,7 @@ Process::PrivateResume ()
}
else if (log)
log->Printf ("Process::PrivateResume() got an error \"%s\".",
error.AsCString("<unknown error>"));
+ usleep(100);
return error;
}
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