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src/gdb ChangeLog lin-lwp.c


CVSROOT:	/cvs/src
Module name:	src
Changes by:	msnyder@sources.redhat.com	2001-07-06 12:06:25

Modified files:
	gdb            : ChangeLog lin-lwp.c 

Log message:
	2001-06-12  Michael Snyder  <msnyder@redhat.com>
	
	* lin-lwp.c: Prevent thread starvation by using a monte carlo
	method to choose which of several event threads to handle next.
	
	(stop_wait_callback): Defer pushback of breakpoint events until
	later; add SIGTRAP events to the queue of unhandled events.
	Keep calling waitpid until SIGSTOP retrieved.  If more than one
	non-SIGSTOP event is retrieved, push them back onto the process
	queue using kill.
	(count_events_callback, select_singlestep_lwp_callback,
	select_event_lwp_callback, cancel_breakpoints_callback,
	select_event_lwp): New functions.  Implement monte carlo method
	for selecting which of several SIGTRAP threads to handle next.
	Push back the breakpoint event for all threads other than the
	selected one.
	(lin_lwp_wait): Call select_event_lwp to decide which of several
	sigtrapped lwps to handle next.
	(resume_callback): Disable code that attempts to handle
	step_resume breakpoints.  Let core gdb handle this.

Patches:
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.1419&r2=1.1420
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/gdb/lin-lwp.c.diff?cvsroot=src&r1=1.24&r2=1.25


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