Separate tests for reading and writing.

netwerk/test/TestDBMAccess.cpp

@@ -1,31 +1,39 @@
 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
-Subject: 
-    Date: 
-        Thu, 11 Jan 2001 16:38:10 -0800
-   From: 
-        Doug Turner <dougt@z.netscape.com>
-     To: 
-        gordon@netscape.com
+ *
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (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.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ * 
+ * The Original Code is nsCacheManager.h, released January 22, 2001.
+ * 
+ * The Initial Developer of the Original Code is Netscape Communications
+ * Corporation.  Portions created by Netscape are
+ * Copyright (C) 2001 Netscape Communications Corporation.  All
+ * Rights Reserved.
+ * 
+ * Contributor(s): 
+ *    Doug Turner
+ *    Gordon Sheridan
  */
 
 
-
 #include "nscore.h"
 #include "nspr.h"
 #include "mcom_db.h"
 #include "nsString.h"
 
-DB* myDB;
-
 #define DATASIZE 512
 #define ENTRYCOUNT 512
 #define USE_ENTRY_ID 1
+#define EXTRA_LOOKUP 1
 
-int
-testDBM(int cycles)
-{
-
-    // create database file
+DB* myDB;
 HASHINFO hash_info = {
     16*1024 , /* bucket size */
         0 ,       /* fill factor */
@@ -35,6 +43,15 @@ testDBM(int cycles)
         0} ;      /* byte order */
 
 
+
+
+int writeDBM(int cycles)
+{
+    DBT db_key, db_data ;
+    PRIntervalTime time = PR_IntervalNow();
+
+    while (cycles--) {        
+        // create database file
         myDB = dbopen("/tmp/foodb",
                       O_RDWR | O_CREAT ,
                       0600 ,
@@ -51,11 +68,6 @@ testDBM(int cycles)
         char * data = (char*) malloc(DATASIZE);
         for (x=0; x<DATASIZE; x++)
             *data = '\0';
-    
-    
-    // write key-data pairs to database
-    DBT db_key, db_data ;
-    
         for (x=1; x<=ENTRYCOUNT; x++) {
             nsCAutoString keyName("foo");
             keyName.AppendInt( x );
@@ -85,13 +97,21 @@ testDBM(int cycles)
         
         (*myDB->sync)(myDB, 0); 
         free(data);
+    }
+    return PR_IntervalToMilliseconds( PR_IntervalNow() - time);
+}
 
+
+int
+readDBM(int cycles)
+{
     // begin timing "lookups"
     int status = 0 ;
+    DBT db_key, db_data ;
     PRIntervalTime time = PR_IntervalNow();
     
     while (cycles--) {
-        for (x=1; x<=ENTRYCOUNT; x++) {
+        for (int x=1; x<=ENTRYCOUNT; x++) {
 #if USE_ENTRY_ID
             DBT entry_data;
 
@@ -116,6 +136,17 @@ testDBM(int cycles)
                 printf("Bad Status %d\n", status);
                 return -1;
             }
+#if EXTRA_LOOKUP
+            db_key.data = (void*)&x;
+            db_key.size = sizeof(x);
+
+            status = (*myDB->get)(myDB, &db_key, &entry_data, 0);            
+            if(status != 0) {
+                printf("Bad Status %d\n", status);
+                return -1;
+            }
+
+#endif
         }
     }
     (*myDB->sync)(myDB, 0); 
@@ -126,7 +157,7 @@ testDBM(int cycles)
 
 
 int
-testFile(int cycles)
+writeFile(int cycles)
 {
     FILE* file;
     int fStatus;
@@ -135,6 +166,8 @@ testFile(int cycles)
     for (x=0; x<DATASIZE; x++)
         *data = '\0';
 
+    PRIntervalTime time = PR_IntervalNow();
+    while (cycles--) {
         // create "cache" directories
         mkdir("/tmp/foo", 0755);
         
@@ -162,11 +195,21 @@ testFile(int cycles)
             } 
             fclose(file);
         }
+    }
+    return PR_IntervalToMilliseconds( PR_IntervalNow() - time);
+}
+
+
+int
+readFile(int cycles)
+{
+    FILE* file;
+    int fStatus;
     
     // begin timing "lookups"
     PRIntervalTime time = PR_IntervalNow();
     while (cycles--) {
-        for (x=1; x<=ENTRYCOUNT; x++) {
+        for (int x=1; x<=ENTRYCOUNT; x++) {
             nsCAutoString filename; filename.Assign("/tmp/foo/");
             filename.AppendInt( x % 32 );
             filename.Append("/");
@@ -194,13 +237,22 @@ testFile(int cycles)
 }
 
 
-void
+int
 main(void)
 {
-    int totalDBMTime  = testDBM(32);
-    int totalFileTime = testFile(32);
+    int totalDBMTime  = writeDBM(32);
+    int totalFileTime = writeFile(32);
 
-    printf("total dbm IO  ---- > (%d) milliseconds\n", totalDBMTime);
-    printf("total file IO ---- > (%d) milliseconds\n", totalFileTime);
+    printf("total write dbm IO  ---- > (%d) milliseconds\n", totalDBMTime);
+    printf("total write file IO ---- > (%d) milliseconds\n", totalFileTime);
+
+    totalDBMTime  = readDBM(32);
+    totalFileTime = readFile(32);
+
+    printf("\n");
+    printf("total read dbm IO  ---- > (%d) milliseconds\n", totalDBMTime);
+    printf("total read file IO ---- > (%d) milliseconds\n", totalFileTime);
+
+    return 0;
 }