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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/***********************************************************************
+**
+** This server simulates a server running in loopback mode.
+**
+** The idea is that a single server is created. The server initially creates
+** a number of worker threads. Then, with the server running, a number of
+** clients are created which start requesting service from the server.
+**
+**
+** Modification History:
+** 19-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
+** The debug mode will print all of the printfs associated with this test.
+** The regress mode will be the default mode. Since the regress tool limits
+** the output to a one line status:PASS or FAIL,all of the printf statements
+** have been handled with an if (debug_mode) statement.
+** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
+** recognize the return code from tha main program.
+***********************************************************************/
+
+/***********************************************************************
+** Includes
+***********************************************************************/
+/* Used to get the command line option */
+#include "plgetopt.h"
+
+#include "nspr.h"
+#include "pprthred.h"
+
+#include <string.h>
+
+#define PORT 15004
+#define THREAD_STACKSIZE 0
+
+static int _iterations = 1000;
+static int _clients = 1;
+static int _client_data = 250;
+static int _server_data = (8*1024);
+
+static PRThreadScope ServerScope, ClientScope;
+
+#define SERVER "Server"
+#define MAIN "Main"
+
+#define SERVER_STATE_STARTUP 0
+#define SERVER_STATE_READY 1
+#define SERVER_STATE_DYING 2
+#define SERVER_STATE_DEAD 4
+int ServerState;
+PRLock *ServerStateCVLock;
+PRCondVar *ServerStateCV;
+
+#ifdef DEBUGPRINTS
+#define DPRINTF printf
+#else
+#define DPRINTF
+#endif
+
+PRIntn failed_already=0;
+PRIntn debug_mode;
+
+
+
+static void do_work(void);
+
+/* --- Server state functions --------------------------------------------- */
+void
+SetServerState(char *waiter, PRInt32 state)
+{
+ PR_Lock(ServerStateCVLock);
+ ServerState = state;
+ PR_NotifyCondVar(ServerStateCV);
+
+ if (debug_mode) {
+ DPRINTF("\t%s changed state to %d\n", waiter, state);
+ }
+
+ PR_Unlock(ServerStateCVLock);
+}
+
+int
+WaitServerState(char *waiter, PRInt32 state)
+{
+ PRInt32 rv;
+
+ PR_Lock(ServerStateCVLock);
+
+ if (debug_mode) {
+ DPRINTF("\t%s waiting for state %d\n", waiter, state);
+ }
+
+ while(!(ServerState & state)) {
+ PR_WaitCondVar(ServerStateCV, PR_INTERVAL_NO_TIMEOUT);
+ }
+ rv = ServerState;
+
+ if (debug_mode) DPRINTF("\t%s resuming from wait for state %d; state now %d\n",
+ waiter, state, ServerState);
+ PR_Unlock(ServerStateCVLock);
+
+ return rv;
+}
+
+/* --- Server Functions ------------------------------------------- */
+
+PRLock *workerThreadsLock;
+PRInt32 workerThreads;
+PRInt32 workerThreadsBusy;
+
+void
+WorkerThreadFunc(void *_listenSock)
+{
+ PRFileDesc *listenSock = (PRFileDesc *)_listenSock;
+ PRInt32 bytesRead;
+ PRInt32 bytesWritten;
+ char *dataBuf;
+ char *sendBuf;
+
+ if (debug_mode) DPRINTF("\tServer buffer is %d bytes; %d data, %d netaddrs\n",
+ _client_data+(2*sizeof(PRNetAddr))+32, _client_data, (2*sizeof(PRNetAddr))+32);
+ dataBuf = (char *)PR_MALLOC(_client_data + 2*sizeof(PRNetAddr) + 32);
+ if (!dataBuf)
+ if (debug_mode) {
+ printf("\tServer could not malloc space!?\n");
+ }
+ sendBuf = (char *)PR_MALLOC(_server_data *sizeof(char));
+ if (!sendBuf)
+ if (debug_mode) {
+ printf("\tServer could not malloc space!?\n");
+ }
+
+ if (debug_mode) {
+ DPRINTF("\tServer worker thread running\n");
+ }
+
+ while(1) {
+ PRInt32 bytesToRead = _client_data;
+ PRInt32 bytesToWrite = _server_data;
+ PRFileDesc *newSock;
+ PRNetAddr *rAddr;
+ PRInt32 loops = 0;
+
+ loops++;
+
+ if (debug_mode) {
+ DPRINTF("\tServer thread going into accept\n");
+ }
+
+ bytesRead = PR_AcceptRead(listenSock,
+ &newSock,
+ &rAddr,
+ dataBuf,
+ bytesToRead,
+ PR_INTERVAL_NO_TIMEOUT);
+
+ if (bytesRead < 0) {
+ if (debug_mode) {
+ printf("\tServer error in accept (%d)\n", bytesRead);
+ }
+ continue;
+ }
+
+ if (debug_mode) {
+ DPRINTF("\tServer accepted connection (%d bytes)\n", bytesRead);
+ }
+
+ PR_AtomicIncrement(&workerThreadsBusy);
+ if (workerThreadsBusy == workerThreads) {
+ PR_Lock(workerThreadsLock);
+ if (workerThreadsBusy == workerThreads) {
+ PRThread *WorkerThread;
+
+ WorkerThread = PR_CreateThread(
+ PR_SYSTEM_THREAD,
+ WorkerThreadFunc,
+ listenSock,
+ PR_PRIORITY_NORMAL,
+ ServerScope,
+ PR_UNJOINABLE_THREAD,
+ THREAD_STACKSIZE);
+
+ if (!WorkerThread) {
+ if (debug_mode) {
+ printf("Error creating client thread %d\n", workerThreads);
+ }
+ } else {
+ PR_AtomicIncrement(&workerThreads);
+ if (debug_mode) {
+ DPRINTF("\tServer creates worker (%d)\n", workerThreads);
+ }
+ }
+ }
+ PR_Unlock(workerThreadsLock);
+ }
+
+ bytesToRead -= bytesRead;
+ while (bytesToRead) {
+ bytesRead = PR_Recv(newSock,
+ dataBuf,
+ bytesToRead,
+ 0,
+ PR_INTERVAL_NO_TIMEOUT);
+ if (bytesRead < 0) {
+ if (debug_mode) {
+ printf("\tServer error receiving data (%d)\n", bytesRead);
+ }
+ continue;
+ }
+ if (debug_mode) {
+ DPRINTF("\tServer received %d bytes\n", bytesRead);
+ }
+ }
+
+ bytesWritten = PR_Send(newSock,
+ sendBuf,
+ bytesToWrite,
+ 0,
+ PR_INTERVAL_NO_TIMEOUT);
+ if (bytesWritten != _server_data) {
+ if (debug_mode) printf("\tError sending data to client (%d, %d)\n",
+ bytesWritten, PR_GetOSError());
+ } else {
+ if (debug_mode) {
+ DPRINTF("\tServer sent %d bytes\n", bytesWritten);
+ }
+ }
+
+ PR_Close(newSock);
+ PR_AtomicDecrement(&workerThreadsBusy);
+ }
+}
+
+PRFileDesc *
+ServerSetup(void)
+{
+ PRFileDesc *listenSocket;
+ PRSocketOptionData sockOpt;
+ PRNetAddr serverAddr;
+ PRThread *WorkerThread;
+
+ if ( (listenSocket = PR_NewTCPSocket()) == NULL) {
+ if (debug_mode) {
+ printf("\tServer error creating listen socket\n");
+ }
+ else {
+ return NULL;
+ }
+ }
+
+ sockOpt.option = PR_SockOpt_Reuseaddr;
+ sockOpt.value.reuse_addr = PR_TRUE;
+ if ( PR_SetSocketOption(listenSocket, &sockOpt) == PR_FAILURE) {
+ if (debug_mode) printf("\tServer error setting socket option: OS error %d\n",
+ PR_GetOSError());
+ else {
+ failed_already=1;
+ }
+ PR_Close(listenSocket);
+ return NULL;
+ }
+
+ memset(&serverAddr, 0, sizeof(PRNetAddr));
+ serverAddr.inet.family = PR_AF_INET;
+ serverAddr.inet.port = PR_htons(PORT);
+ serverAddr.inet.ip = PR_htonl(PR_INADDR_ANY);
+
+ if ( PR_Bind(listenSocket, &serverAddr) == PR_FAILURE) {
+ if (debug_mode) printf("\tServer error binding to server address: OS error %d\n",
+ PR_GetOSError());
+ else {
+ failed_already=1;
+ }
+ PR_Close(listenSocket);
+ return NULL;
+ }
+
+ if ( PR_Listen(listenSocket, 128) == PR_FAILURE) {
+ if (debug_mode) {
+ printf("\tServer error listening to server socket\n");
+ }
+ else {
+ failed_already=1;
+ }
+ PR_Close(listenSocket);
+
+ return NULL;
+ }
+
+ /* Create Clients */
+ workerThreads = 0;
+ workerThreadsBusy = 0;
+
+ workerThreadsLock = PR_NewLock();
+
+ WorkerThread = PR_CreateThread(
+ PR_SYSTEM_THREAD,
+ WorkerThreadFunc,
+ listenSocket,
+ PR_PRIORITY_NORMAL,
+ ServerScope,
+ PR_UNJOINABLE_THREAD,
+ THREAD_STACKSIZE);
+
+ if (!WorkerThread) {
+ if (debug_mode) {
+ printf("error creating working thread\n");
+ }
+ PR_Close(listenSocket);
+ return NULL;
+ }
+ PR_AtomicIncrement(&workerThreads);
+ if (debug_mode) {
+ DPRINTF("\tServer created primordial worker thread\n");
+ }
+
+ return listenSocket;
+}
+
+/* The main server loop */
+void
+ServerThreadFunc(void *unused)
+{
+ PRFileDesc *listenSocket;
+
+ /* Do setup */
+ listenSocket = ServerSetup();
+
+ if (!listenSocket) {
+ SetServerState(SERVER, SERVER_STATE_DEAD);
+ } else {
+
+ if (debug_mode) {
+ DPRINTF("\tServer up\n");
+ }
+
+ /* Tell clients they can start now. */
+ SetServerState(SERVER, SERVER_STATE_READY);
+
+ /* Now wait for server death signal */
+ WaitServerState(SERVER, SERVER_STATE_DYING);
+
+ /* Cleanup */
+ SetServerState(SERVER, SERVER_STATE_DEAD);
+ }
+}
+
+/* --- Client Functions ------------------------------------------- */
+
+PRInt32 numRequests;
+PRInt32 numClients;
+PRMonitor *clientMonitor;
+
+void
+ClientThreadFunc(void *unused)
+{
+ PRNetAddr serverAddr;
+ PRFileDesc *clientSocket;
+ char *sendBuf;
+ char *recvBuf;
+ PRInt32 rv;
+ PRInt32 bytesNeeded;
+
+ sendBuf = (char *)PR_MALLOC(_client_data * sizeof(char));
+ if (!sendBuf)
+ if (debug_mode) {
+ printf("\tClient could not malloc space!?\n");
+ }
+ recvBuf = (char *)PR_MALLOC(_server_data * sizeof(char));
+ if (!recvBuf)
+ if (debug_mode) {
+ printf("\tClient could not malloc space!?\n");
+ }
+
+ memset(&serverAddr, 0, sizeof(PRNetAddr));
+ serverAddr.inet.family = PR_AF_INET;
+ serverAddr.inet.port = PR_htons(PORT);
+ serverAddr.inet.ip = PR_htonl(PR_INADDR_LOOPBACK);
+
+ while(numRequests > 0) {
+
+ if ( (numRequests % 10) == 0 )
+ if (debug_mode) {
+ printf(".");
+ }
+ if (debug_mode) {
+ DPRINTF("\tClient starting request %d\n", numRequests);
+ }
+
+ clientSocket = PR_NewTCPSocket();
+ if (!clientSocket) {
+ if (debug_mode) printf("Client error creating socket: OS error %d\n",
+ PR_GetOSError());
+ continue;
+ }
+
+ if (debug_mode) {
+ DPRINTF("\tClient connecting\n");
+ }
+
+ rv = PR_Connect(clientSocket,
+ &serverAddr,
+ PR_INTERVAL_NO_TIMEOUT);
+ if (!clientSocket) {
+ if (debug_mode) {
+ printf("\tClient error connecting\n");
+ }
+ continue;
+ }
+
+ if (debug_mode) {
+ DPRINTF("\tClient connected\n");
+ }
+
+ rv = PR_Send(clientSocket,
+ sendBuf,
+ _client_data,
+ 0,
+ PR_INTERVAL_NO_TIMEOUT);
+ if (rv != _client_data) {
+ if (debug_mode) {
+ printf("Client error sending data (%d)\n", rv);
+ }
+ PR_Close(clientSocket);
+ continue;
+ }
+
+ if (debug_mode) {
+ DPRINTF("\tClient sent %d bytes\n", rv);
+ }
+
+ bytesNeeded = _server_data;
+ while(bytesNeeded) {
+ rv = PR_Recv(clientSocket,
+ recvBuf,
+ bytesNeeded,
+ 0,
+ PR_INTERVAL_NO_TIMEOUT);
+ if (rv <= 0) {
+ if (debug_mode) printf("Client error receiving data (%d) (%d/%d)\n",
+ rv, (_server_data - bytesNeeded), _server_data);
+ break;
+ }
+ if (debug_mode) {
+ DPRINTF("\tClient received %d bytes; need %d more\n", rv, bytesNeeded - rv);
+ }
+ bytesNeeded -= rv;
+ }
+
+ PR_Close(clientSocket);
+
+ PR_AtomicDecrement(&numRequests);
+ }
+
+ PR_EnterMonitor(clientMonitor);
+ --numClients;
+ PR_Notify(clientMonitor);
+ PR_ExitMonitor(clientMonitor);
+
+ PR_DELETE(sendBuf);
+ PR_DELETE(recvBuf);
+}
+
+void
+RunClients(void)
+{
+ PRInt32 index;
+
+ numRequests = _iterations;
+ numClients = _clients;
+ clientMonitor = PR_NewMonitor();
+
+ for (index=0; index<_clients; index++) {
+ PRThread *clientThread;
+
+
+ clientThread = PR_CreateThread(
+ PR_USER_THREAD,
+ ClientThreadFunc,
+ NULL,
+ PR_PRIORITY_NORMAL,
+ ClientScope,
+ PR_UNJOINABLE_THREAD,
+ THREAD_STACKSIZE);
+
+ if (!clientThread) {
+ if (debug_mode) {
+ printf("\terror creating client thread %d\n", index);
+ }
+ } else if (debug_mode) {
+ DPRINTF("\tMain created client %d/%d\n", index+1, _clients);
+ }
+
+ }
+
+ PR_EnterMonitor(clientMonitor);
+ while(numClients) {
+ PR_Wait(clientMonitor, PR_INTERVAL_NO_TIMEOUT);
+ }
+ PR_ExitMonitor(clientMonitor);
+}
+
+/* --- Main Function ---------------------------------------------- */
+
+static
+void do_work()
+{
+ PRThread *ServerThread;
+ PRInt32 state;
+
+ SetServerState(MAIN, SERVER_STATE_STARTUP);
+ ServerThread = PR_CreateThread(
+ PR_USER_THREAD,
+ ServerThreadFunc,
+ NULL,
+ PR_PRIORITY_NORMAL,
+ ServerScope,
+ PR_JOINABLE_THREAD,
+ THREAD_STACKSIZE);
+ if (!ServerThread) {
+ if (debug_mode) {
+ printf("error creating main server thread\n");
+ }
+ return;
+ }
+
+ /* Wait for server to be ready */
+ state = WaitServerState(MAIN, SERVER_STATE_READY|SERVER_STATE_DEAD);
+
+ if (!(state & SERVER_STATE_DEAD)) {
+ /* Run Test Clients */
+ RunClients();
+
+ /* Send death signal to server */
+ SetServerState(MAIN, SERVER_STATE_DYING);
+ }
+
+ PR_JoinThread(ServerThread);
+}
+
+
+static void do_workUK(void)
+{
+ ServerScope = PR_LOCAL_THREAD;
+ ClientScope = PR_GLOBAL_THREAD;
+ do_work();
+}
+
+
+
+static void Measure(void (*func)(void), const char *msg)
+{
+ PRIntervalTime start, stop;
+ double d;
+
+ start = PR_IntervalNow();
+ (*func)();
+ stop = PR_IntervalNow();
+
+ d = (double)PR_IntervalToMicroseconds(stop - start);
+
+ if (debug_mode) {
+ printf("\n%40s: %6.2f usec\n", msg, d / _iterations);
+ }
+}
+
+
+int main(int argc, char **argv)
+{
+ /* The command line argument: -d is used to determine if the test is being run
+ in debug mode. The regress tool requires only one line output:PASS or FAIL.
+ All of the printfs associated with this test has been handled with a if (debug_mode)
+ test.
+ Usage: test_name -d
+ */
+ PLOptStatus os;
+ PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
+ while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
+ {
+ if (PL_OPT_BAD == os) {
+ continue;
+ }
+ switch (opt->option)
+ {
+ case 'd': /* debug mode */
+ debug_mode = 1;
+ break;
+ default:
+ break;
+ }
+ }
+ PL_DestroyOptState(opt);
+
+ /* main test */
+ if (debug_mode) {
+ printf("Enter number of iterations: \n");
+ scanf("%d", &_iterations);
+ printf("Enter number of clients : \n");
+ scanf("%d", &_clients);
+ printf("Enter size of client data : \n");
+ scanf("%d", &_client_data);
+ printf("Enter size of server data : \n");
+ scanf("%d", &_server_data);
+ }
+ else
+ {
+ _iterations = 7;
+ _clients = 7;
+ _client_data = 100;
+ _server_data = 100;
+ }
+
+ if (debug_mode) {
+ printf("\n\n%d iterations with %d client threads.\n",
+ _iterations, _clients);
+ printf("Sending %d bytes of client data and %d bytes of server data\n",
+ _client_data, _server_data);
+ }
+ PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
+ PR_STDIO_INIT();
+
+ PR_SetThreadRecycleMode(64);
+
+ ServerStateCVLock = PR_NewLock();
+ ServerStateCV = PR_NewCondVar(ServerStateCVLock);
+
+ Measure(do_workUK, "server loop user/kernel");
+
+ PR_Cleanup();
+
+ if(failed_already) {
+ return 1;
+ }
+ else {
+ return 0;
+ }
+}