Initial version

nsprpub/pr/tests/fdcach.c

@@ -0,0 +1,240 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.1 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ * 
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ * 
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1999 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * File: fdcach.c
+ * Description:
+ *   This test verifies that the fd cache and stack are working
+ *   correctly.
+ */
+
+#include "nspr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * Define ORDER_PRESERVED if the implementation of PR_SetFDCacheSize
+ * preserves the ordering of the fd's when moving them between the
+ * cache and the stack.
+ */
+#define ORDER_PRESERVED 1
+
+/*
+ * NUM_FDS must be <= FD_CACHE_SIZE.
+ */
+#define FD_CACHE_SIZE 1024
+#define NUM_FDS 20
+
+int main(int argc, char **argv)
+{
+    int i;
+    PRFileDesc *fds[NUM_FDS];
+    PRFileDesc *savefds[NUM_FDS];
+    int numfds = sizeof(fds)/sizeof(fds[0]);
+
+    /*
+     * Switch between cache and stack when they are empty.
+     * Then start with the fd cache.
+     */
+    PR_SetFDCacheSize(0, FD_CACHE_SIZE);
+    PR_SetFDCacheSize(0, 0);
+    PR_SetFDCacheSize(0, FD_CACHE_SIZE);
+
+    /* Add some fd's to the fd cache. */
+    for (i = 0; i < numfds; i++) {
+        savefds[i] = PR_NewTCPSocket();
+        if (NULL == savefds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+    }
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    /*
+     * Create some fd's.  These fd's should come from
+     * the fd cache.  Verify the FIFO ordering of the fd
+     * cache.
+     */
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+        if (fds[i] != savefds[i]) {
+            fprintf(stderr, "fd cache malfunctioned\n");
+            exit(1);
+        }
+    }
+    /* Put the fd's back to the fd cache. */
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    /* Switch to the fd stack. */
+    PR_SetFDCacheSize(0, 0);
+
+    /*
+     * Create some fd's.  These fd's should come from
+     * the fd stack.
+     */
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+#ifdef ORDER_PRESERVED
+        if (fds[i] != savefds[numfds-1-i]) {
+            fprintf(stderr, "fd stack malfunctioned\n");
+            exit(1);
+        }
+#else
+        savefds[numfds-1-i] = fds[i];
+#endif
+    }
+    /* Put the fd's back to the fd stack. */
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    /*
+     * Now create some fd's and verify the LIFO ordering of
+     * the fd stack.
+     */
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+        if (fds[i] != savefds[numfds-1-i]) {
+            fprintf(stderr, "fd stack malfunctioned\n");
+            exit(1);
+        }
+    }
+    /* Put the fd's back to the fd stack. */
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    /* Switch to the fd cache. */
+    PR_SetFDCacheSize(0, FD_CACHE_SIZE);
+
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+#ifdef ORDER_PRESERVED
+        if (fds[i] != savefds[i]) {
+            fprintf(stderr, "fd cache malfunctioned\n");
+            exit(1);
+        }
+#else
+        savefds[i] = fds[i];
+#endif
+    }
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+        if (fds[i] != savefds[i]) {
+            fprintf(stderr, "fd cache malfunctioned\n");
+            exit(1);
+        }
+    }
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    /* Switch to the fd stack. */
+    PR_SetFDCacheSize(0, 0);
+
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+#ifdef ORDER_PRESERVED
+        if (fds[i] != savefds[numfds-1-i]) {
+            fprintf(stderr, "fd stack malfunctioned\n");
+            exit(1);
+        }
+#else
+        savefds[numfds-1-i];
+#endif
+    }
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    for (i = 0; i < numfds; i++) {
+        fds[i] = PR_NewTCPSocket();
+        if (NULL == fds[i]) {
+            fprintf(stderr, "PR_NewTCPSocket failed\n");
+            exit(1);
+        }
+        if (fds[i] != savefds[numfds-1-i]) {
+            fprintf(stderr, "fd stack malfunctioned\n");
+            exit(1);
+        }
+    }
+    for (i = 0; i < numfds; i++) {
+        if (PR_Close(savefds[i]) == PR_FAILURE) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        } 
+    }
+
+    PR_Cleanup();
+    printf("PASS\n");
+    return 0;
+}