Date: Mon, 5 Jul 2004 11:48:44 GMT From: David Xu <davidxu@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 56497 for review Message-ID: <200407051148.i65Bmiuq084737@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=56497 Change 56497 by davidxu@davidxu_alona on 2004/07/05 11:48:24 Allow a single thread to be resumed, while others are still suspended. Affected files ... .. //depot/projects/davidxu_ksedbg/src/sys/kern/sys_process.c#5 edit Differences ... ==== //depot/projects/davidxu_ksedbg/src/sys/kern/sys_process.c#5 (text+ko) ==== @@ -30,7 +30,7 @@ */ #include <sys/cdefs.h> -__FBSDID("$FreeBSD: src/sys/kern/sys_process.c,v 1.121 2004/07/02 09:19:22 davidxu Exp $"); +__FBSDID("$FreeBSD: src/sys/kern/sys_process.c,v 1.120 2004/04/01 20:56:44 jhb Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -371,6 +371,7 @@ int error, write, tmp, num; int proctree_locked = 0; lwpid_t tid = 0, tid2, *buf; + pid_t saved_pid = pid; curp = td->td_proc; @@ -633,10 +634,23 @@ p->p_xstat = data; p->p_flag &= ~(P_STOPPED_TRACE|P_STOPPED_SIG); mtx_lock_spin(&sched_lock); - thread_unsuspend_one(p->p_xthread); + if (req == PT_DETACH || saved_pid <= PID_MAX) { + if (p->p_xthread) { + p->p_xthread->td_flags &= ~TDF_XSIG; + p->p_xthread->td_xsig = data; + p->p_xthread = NULL; + } + thread_unsuspend(p); + } else { + td2->td_flags &= ~TDF_XSIG; + td2->td_xsig = data; + if (p->p_xthread == td2) + p->p_xthread = NULL; + thread_unsuspend_one(td2); + } mtx_unlock_spin(&sched_lock); - p->p_xthread = NULL; } else if (data) { + /* can this happen ? */ p->p_xthread = NULL; psignal(p, data); }
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