Bugsplat bug #345296: added a test program that have multiple

threads accepting on the same listening socket.

2 files changed, 234 insertions, 0 deletions

diff --git a/pr/tests/Makefile b/pr/tests/Makefile
index 6e2d7196..5cd06caf 100644
--- a/pr/tests/Makefile
+++ b/pr/tests/Makefile
@@ -77,6 +77,7 @@ CSRCS =             \
 	lock.c          \
 	lockfile.c      \
 	logger.c		\
+	multiacc.c		\
 	multiwait.c		\
 	many_cv.c		\
 	nbconn.c		\
diff --git a/pr/tests/multiacc.c b/pr/tests/multiacc.c
new file mode 100644
index 00000000..5388c2d3
--- /dev/null
+++ b/pr/tests/multiacc.c
@@ -0,0 +1,233 @@
+/* -*- 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 1.0 (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: multiacc.c
+ *
+ * Description:
+ * This test creates multiple threads that accept on the
+ * same listening socket.
+ */
+
+#include "nspr.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define NUM_SERVER_THREADS 5
+
+static int num_server_threads = NUM_SERVER_THREADS;
+static PRThreadScope thread_scope = PR_GLOBAL_THREAD;
+static PRBool exit_flag = PR_FALSE;
+
+static void ServerThreadFunc(void *arg)
+{
+    PRFileDesc *listenSock = (PRFileDesc *) arg;
+    PRFileDesc *acceptSock;
+    PRErrorCode err;
+    PRStatus status;
+
+    while (!exit_flag) {
+        acceptSock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
+        if (NULL == acceptSock) {
+            err = PR_GetError();
+            if (PR_PENDING_INTERRUPT_ERROR == err) {
+                printf("server thread is interrupted\n");
+                fflush(stdout);
+                continue;
+            }
+            fprintf(stderr, "PR_Accept failed: %d\n", err);
+            exit(1);
+        }
+        status = PR_Close(acceptSock);
+        if (PR_FAILURE == status) {
+            fprintf(stderr, "PR_Close failed\n");
+            exit(1);
+        }
+    }
+}
+
+int main(int argc, char **argv)
+{
+    PRNetAddr serverAddr;
+    PRFileDesc *dummySock;
+    PRFileDesc *listenSock;
+    PRFileDesc *clientSock;
+    PRThread *dummyThread;
+    PRThread **serverThreads;
+    PRStatus status;
+    PRUint16 port;
+    int idx;
+    PRInt32 nbytes;
+    char buf[1024];
+
+    serverThreads = (PRThread **)
+            PR_Malloc(num_server_threads * sizeof(PRThread *));
+    if (NULL == serverThreads) {
+        fprintf(stderr, "PR_Malloc failed\n");
+        exit(1);
+    }
+
+    /*
+     * Create a dummy listening socket and have the first
+     * (dummy) thread listen on it.  This is to ensure that
+     * the first thread becomes the I/O continuation thread
+     * in the pthreads implementation (see ptio.c) and remains
+     * so throughout the test, so that we never have to
+     * recycle the I/O continuation thread.
+     */
+    dummySock = PR_NewTCPSocket();
+    if (NULL == dummySock) {
+        fprintf(stderr, "PR_NewTCPSocket failed\n");
+        exit(1);
+    }
+    memset(&serverAddr, 0, sizeof(serverAddr));
+    status = PR_InitializeNetAddr(PR_IpAddrAny, 0, &serverAddr);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_InitializeNetAddr failed\n");
+        exit(1);
+    }
+    status = PR_Bind(dummySock, &serverAddr);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Bind failed\n");
+        exit(1);
+    }
+    status = PR_Listen(dummySock, 5);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Listen failed\n");
+        exit(1);
+    }
+
+    listenSock = PR_NewTCPSocket();
+    if (NULL == listenSock) {
+        fprintf(stderr, "PR_NewTCPSocket failed\n");
+        exit(1);
+    }
+    memset(&serverAddr, 0, sizeof(serverAddr));
+    status = PR_InitializeNetAddr(PR_IpAddrAny, 0, &serverAddr);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_InitializeNetAddr failed\n");
+        exit(1);
+    }
+    status = PR_Bind(listenSock, &serverAddr);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Bind failed\n");
+        exit(1);
+    }
+    status = PR_GetSockName(listenSock, &serverAddr);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_GetSockName failed\n");
+        exit(1);
+    }
+    port = PR_ntohs(serverAddr.inet.port);
+    status = PR_Listen(listenSock, 5);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Listen failed\n");
+        exit(1);
+    }
+
+    printf("creating dummy thread\n");
+    fflush(stdout);
+    dummyThread = PR_CreateThread(PR_USER_THREAD,
+            ServerThreadFunc, dummySock, PR_PRIORITY_NORMAL,
+            thread_scope, PR_JOINABLE_THREAD, 0);
+    if (NULL == dummyThread) {
+        fprintf(stderr, "PR_CreateThread failed\n");
+        exit(1);
+    }
+    printf("sleeping one second before creating server threads\n");
+    fflush(stdout);
+    PR_Sleep(PR_SecondsToInterval(1));
+    for (idx = 0; idx < num_server_threads; idx++) {
+        serverThreads[idx] = PR_CreateThread(PR_USER_THREAD,
+                ServerThreadFunc, listenSock, PR_PRIORITY_NORMAL,
+                thread_scope, PR_JOINABLE_THREAD, 0);
+        if (NULL == serverThreads[idx]) {
+            fprintf(stderr, "PR_CreateThread failed\n");
+            exit(1);
+        }
+    }
+
+    memset(&serverAddr, 0, sizeof(serverAddr));
+    PR_InitializeNetAddr(PR_IpAddrLoopback, port, &serverAddr);
+    clientSock = PR_NewTCPSocket();
+    if (NULL == clientSock) {
+        fprintf(stderr, "PR_NewTCPSocket failed\n");
+        exit(1);
+    }
+    printf("sleeping one second before connecting\n");
+    fflush(stdout);
+    PR_Sleep(PR_SecondsToInterval(1));
+    status = PR_Connect(clientSock, &serverAddr, PR_INTERVAL_NO_TIMEOUT);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Connect failed\n");
+        exit(1);
+    }
+    nbytes = PR_Read(clientSock, buf, sizeof(buf));
+    if (nbytes != 0) {
+        fprintf(stderr, "expected 0 bytes but got %d bytes\n", nbytes);
+        exit(1);
+    }
+    status = PR_Close(clientSock);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Close failed\n");
+        exit(1);
+    }
+    printf("sleeping one second before shutting down server threads\n");
+    fflush(stdout);
+    PR_Sleep(PR_SecondsToInterval(1));
+
+    exit_flag = PR_TRUE;
+    status = PR_Interrupt(dummyThread);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Interrupt failed\n");
+        exit(1);
+    }
+    status = PR_JoinThread(dummyThread);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_JoinThread failed\n");
+        exit(1);
+    }
+    for (idx = 0; idx < num_server_threads; idx++) {
+        status = PR_Interrupt(serverThreads[idx]);
+        if (PR_FAILURE == status) {
+            fprintf(stderr, "PR_Interrupt failed\n");
+            exit(1);
+        }
+        status = PR_JoinThread(serverThreads[idx]);
+        if (PR_FAILURE == status) {
+            fprintf(stderr, "PR_JoinThread failed\n");
+            exit(1);
+        }
+    }
+    PR_Free(serverThreads);
+    status = PR_Close(dummySock);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Close failed\n");
+        exit(1);
+    }
+    status = PR_Close(listenSock);
+    if (PR_FAILURE == status) {
+        fprintf(stderr, "PR_Close failed\n");
+        exit(1);
+    }
+
+    printf("PASS\n");
+    return 0;
+}