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[bottlenecks.git] / rubbos / app / httpd-2.0.64 / test / test_select.c

diff --git a/rubbos/app/httpd-2.0.64/test/test_select.c b/rubbos/app/httpd-2.0.64/test/test_select.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This is just a quick test program to see how long a wait is
+ * produced by a select loop with an exponential backoff.
+ *
+ *   gcc -g -O2 -o test_select test_select.c
+ *   test_select
+ *
+ * Roy Fielding, 1996
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+int main (void)
+{
+    int srv;
+    long waittime = 4096;
+    struct timeval tv;
+
+    printf("Start\n");
+    while ((waittime > 0) && (waittime < 3000000)) {
+        printf("%d\n", waittime);
+        tv.tv_sec  = waittime/1000000;
+        tv.tv_usec = waittime%1000000;
+        waittime <<= 1;
+        srv = select(0, NULL, NULL, NULL, &tv);
+    }
+    printf("End\n");
+    exit(0);
+}