xnu-1456.1.26.tar.gz

[apple/xnu.git] / tools / tests / libMicro / exit.c

diff --git a/tools/tests/libMicro/exit.c b/tools/tests/libMicro/exit.c
new file mode 100644 (file)
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--- /dev/null
+++ b/tools/tests/libMicro/exit.c
@@ -0,0 +1,160 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms
+ * of the Common Development and Distribution License
+ * (the "License").  You may not use this file except
+ * in compliance with the License.
+ *
+ * You can obtain a copy of the license at
+ * 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 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * benchmark exit
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "libmicro.h"
+
+typedef struct {
+       int                     ts_once;
+       int                     *ts_pids;
+} tsd_t;
+
+static int                     opte = 0;
+static barrier_t               *b;
+
+int
+benchmark_init()
+{
+       lm_tsdsize = sizeof (tsd_t);
+       (void) sprintf(lm_optstr, "e");
+
+       (void) sprintf(lm_usage,
+           "       [-e] (uses _exit() rather than exit())"
+           "notes: measures exit()\n");
+
+       return (0);
+}
+
+/*ARGSUSED*/
+int
+benchmark_optswitch(int opt, char *optarg)
+{
+       switch (opt) {
+       case 'e':
+               opte = 1;
+               break;
+       default:
+               return (-1);
+       }
+       return (0);
+}
+
+int
+benchmark_initrun()
+{
+       b = barrier_create(lm_optP * lm_optT * (lm_optB + 1), 0);
+
+       return (0);
+}
+
+int
+benchmark_finirun()
+{
+       (void) barrier_destroy(b);
+
+       return (0);
+}
+
+int
+benchmark_initbatch(void *tsd)
+{
+       tsd_t                   *ts = (tsd_t *)tsd;
+       int                     i;
+       int                     errors = 0;
+
+       if (ts->ts_once++ == 0) {
+               ts->ts_pids = (int *)malloc(lm_optB * sizeof (pid_t));
+               if (ts->ts_pids == NULL) {
+                       errors ++;
+               }
+       }
+
+       /*
+        * create processes to exit
+        */
+
+       for (i = 0; i < lm_optB; i++) {
+               ts->ts_pids[i] = fork();
+               switch (ts->ts_pids[i]) {
+               case 0:
+                       (void) barrier_queue(b, NULL);
+                       if (opte)
+                               _exit(0);
+                       exit(0);
+                       break;
+               case -1:
+                       errors ++;
+                       break;
+               default:
+                       continue;
+               }
+       }
+
+       return (errors);
+}
+
+/*ARGSUSED*/
+int
+benchmark(void *tsd, result_t *res)
+{
+       int                     i;
+
+       /*
+        * start them all exiting
+        */
+
+       (void) barrier_queue(b, NULL);
+
+       /*
+        * wait for them all to exit
+        */
+
+       for (i = 0; i < lm_optB; i++) {
+               switch (waitpid((pid_t)-1, NULL, 0)) {
+               case 0:
+                       continue;
+               case -1:
+                       res->re_errors++;
+               }
+       }
+
+       res->re_count = i;
+
+       return (0);
+}