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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * 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 the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1999-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+ * 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;
+}