OpenSolaris Launch

1 files changed, 80 insertions, 0 deletions

diff --git a/usr/src/uts/common/syscall/lwp_info.c b/usr/src/uts/common/syscall/lwp_info.c
new file mode 100644
index 0000000000..21ac0ca4c3
--- /dev/null
+++ b/usr/src/uts/common/syscall/lwp_info.c
@@ -0,0 +1,80 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved	*/
+
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/proc.h>
+#include <sys/time.h>
+#include <sys/debug.h>
+#include <sys/model.h>
+#include <sys/msacct.h>
+
+/*
+ * Get the time accounting information for the calling LWP.
+ */
+int
+lwp_info(timestruc_t *tvp)
+{
+	timestruc_t tv[2];
+	hrtime_t hrutime, hrstime;
+	klwp_t *lwp = ttolwp(curthread);
+
+	hrutime = lwp->lwp_mstate.ms_acct[LMS_USER];
+	hrstime = lwp->lwp_mstate.ms_acct[LMS_SYSTEM] +
+	    lwp->lwp_mstate.ms_acct[LMS_TRAP];
+	scalehrtime(&hrutime);
+	scalehrtime(&hrstime);
+
+	hrt2ts(hrutime, &tv[0]);
+	hrt2ts(hrstime, &tv[1]);
+
+	if (get_udatamodel() == DATAMODEL_NATIVE) {
+		if (copyout(tv, tvp, sizeof (tv)))
+			return (set_errno(EFAULT));
+	} else {
+		timestruc32_t tv32[2];
+
+		if (TIMESPEC_OVERFLOW(&tv[0]) ||
+		    TIMESPEC_OVERFLOW(&tv[1]))
+			return (set_errno(EOVERFLOW));	/* unlikely */
+
+		TIMESPEC_TO_TIMESPEC32(&tv32[0], &tv[0]);
+		TIMESPEC_TO_TIMESPEC32(&tv32[1], &tv[1]);
+
+		if (copyout(tv32, tvp, sizeof (tv32)))
+			return (set_errno(EFAULT));
+	}
+	return (0);
+}