The Tor Browser: nsprpub/pr/tests/sel_spd.c@b8a032363ba2 (annotated)

nsprpub/pr/tests/sel_spd.c@b8a032363ba2 (annotated)

nsprpub/pr/tests/sel_spd.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- 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/. */
 /*
  * Test the speed of select within NSPR
  *
  */
 #include "nspr.h"
 #include "prpriv.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
 #include <string.h>
 #ifdef SYMBIAN
 #include <getopt.h>
 #endif
 #define PORT_BASE 19000
 typedef struct timer_slot_t {
 	unsigned long d_connect;
 	unsigned long d_cl_data;
 	unsigned long d_sv_data;
 	unsigned long d_close;
 	unsigned long d_total;
 	unsigned long requests;
 } timer_slot_t;
 static long _iterations = 5;
 static long _client_data = 8192;
 #ifdef SYMBIAN
 /*
  * Symbian OS does not scale well specially the requirement for thread stack
  * space and buffer allocation space.  It is easy to get into a fragmented
  * memory and not be able to allocate thread stack or client/server data
  * buffer.
  */
 static long _server_data = (8*1024);
 static long _threads_max = 10, _threads = 10;
 #else
 static long _server_data = (128*1024);
 static long _threads_max = 10, _threads = 10;
 #endif
 static int verbose=0;
 static PRMonitor *exit_cv;
 static long _thread_exit_count;
 static timer_slot_t *timer_data;
 static PRThreadScope scope1, scope2;
 void tally_results(int);
 /* return the diff in microseconds */
 unsigned long _delta(PRIntervalTime *start, PRIntervalTime *stop)
 {
 	/*
 	 * Will C do the right thing with unsigned arithemtic?
 	 */
 	return PR_IntervalToMicroseconds(*stop - *start);
 }
 int _readn(PRFileDesc *sock, char *buf, int len)
 {
 	int rem;
 	int bytes;
 	for (rem=len; rem; rem -= bytes) {
 		bytes = PR_Recv(sock, buf+len-rem, rem, 0, PR_INTERVAL_NO_TIMEOUT);
 		if (bytes <= 0)
             return -1;
 	}
 	return len;
 }
 void
 _thread_exit(int id)
 {
 	PR_EnterMonitor(exit_cv);
 #ifdef DEBUG
 	fprintf(stdout, "Thread %d EXIT\n", id);
 #endif
 	_thread_exit_count--;
 	if (_thread_exit_count == 0) {
 #ifdef DEBUG
 	fprintf(stdout, "Thread %d EXIT triggered notify\n", id);
 #endif
 		PR_Notify(exit_cv);
 	}
 	PR_ExitMonitor(exit_cv);
 }
 void
 _server_thread(void *arg_id)
 {
 	void _client_thread(void *);
 	PRThread *thread;
 	int *id =  (int *)arg_id;
 	PRFileDesc *sock;
 	PRSocketOptionData sockopt;
 	PRNetAddr sa;
 	PRFileDesc * newsock;
 	char *data_buffer = NULL;
 	int data_buffer_size;
 	int index;
 	PRIntervalTime start,
 	      connect_done,
 	      read_done,
 	      write_done,
 	      close_done;
 #ifdef DEBUG
 	fprintf(stdout, "server thread %d alive\n", *id);
 #endif
 	data_buffer_size = (_client_data>_server_data?_client_data:_server_data);
 	if ( (data_buffer = (char *)PR_Malloc(data_buffer_size * sizeof(char))) == NULL ) {
 		fprintf(stderr, "Error creating buffer in server thread %d\n", *id);
 		goto done;
 	}
 	if ( (sock = PR_NewTCPSocket()) == NULL) {
 		fprintf(stderr, "Error creating socket in server thread %d\n", *id);
 		goto done;
 	}
 	sockopt.option = PR_SockOpt_Reuseaddr;
 	sockopt.value.reuse_addr = PR_TRUE;
 	if ( PR_SetSocketOption(sock, &sockopt) == PR_FAILURE) {
 		fprintf(stderr, "Error setting socket option in server thread %d\n", *id);
 		goto done;
 	}
 	memset(&sa, 0 , sizeof(sa));
 	sa.inet.family = PR_AF_INET;
 	sa.inet.port = PR_htons(PORT_BASE + *id);
 	sa.inet.ip = PR_htonl(PR_INADDR_ANY);
 	if ( PR_Bind(sock, &sa) < 0) {
 		fprintf(stderr, "Error binding socket in server thread %d errno = %d\n", *id, errno);
 		goto done;
 	}
 	if ( PR_Listen(sock, 32) < 0 ) {
 		fprintf(stderr, "Error listening to socket in server thread %d\n", *id);
 		goto done;
 	}
 	/* Tell the client to start */
 	if ( (thread = PR_CreateThread(PR_USER_THREAD,
                                       _client_thread,
                                       id,
                                       PR_PRIORITY_NORMAL,
                                       scope2,
                                       PR_UNJOINABLE_THREAD,
 )) == NULL)
 		fprintf(stderr, "Error creating client thread %d\n", *id);
 	for (index = 0; index< _iterations; index++) {
 #ifdef DEBUG
 	fprintf(stdout, "server thread %d loop %d\n", *id, index);
 #endif
 		start = PR_IntervalNow();
 		if ( (newsock = PR_Accept(sock, &sa,
 					PR_INTERVAL_NO_TIMEOUT)) == NULL) {
 			fprintf(stderr, "Error accepting connection %d in server thread %d\n",
 				index, *id);
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "server thread %d got connection %d\n", *id, newsock);
 #endif
 		connect_done = PR_IntervalNow();
 		if ( _readn(newsock, data_buffer, _client_data) < _client_data) {
 			fprintf(stderr, "Error reading client data for iteration %d in server thread %d\n", index, *id );
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "server thread %d read %d bytes\n", *id, _client_data);
 #endif
 		read_done = PR_IntervalNow();
 		if ( PR_Send(newsock, data_buffer, _server_data, 0,
 				PR_INTERVAL_NO_TIMEOUT) < _server_data) {
 			fprintf(stderr, "Error sending client data for iteration %d in server thread %d\n", index, *id );
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "server thread %d write %d bytes\n", *id, _server_data);
 #endif
 		write_done = PR_IntervalNow();
 		PR_Close(newsock);
 		close_done = PR_IntervalNow();
 		timer_data[2*(*id)].d_connect += _delta(&start, &connect_done);
 		timer_data[2*(*id)].d_cl_data += _delta(&connect_done, &read_done);
 		timer_data[2*(*id)].d_sv_data += _delta(&read_done, &write_done);
 		timer_data[2*(*id)].d_close += _delta(&write_done, &close_done);
 		timer_data[2*(*id)].d_total += _delta(&start, &close_done);
 		timer_data[2*(*id)].requests++;
 #ifdef DEBUG
 		fprintf(stdout, "server: %d %d %d %d %d\n",
 			 _delta(&start, &connect_done), _delta(&connect_done, &read_done),
 			 _delta(&read_done, &write_done), _delta(&write_done, &close_done),
 			_delta(&start, &close_done));
 #endif
 	}
 done:
 	if (data_buffer != NULL) PR_Free (data_buffer);
 	if (sock) PR_Close(sock);
 	_thread_exit(*id);
 	return;
 }
 void
 _client_thread(void *arg_id)
 {
 	int *id =  (int *)arg_id;
 	int index;
 	PRNetAddr sa;
 	PRFileDesc *sock_h;
 	char *data_buffer = NULL;
 	int data_buffer_size;
 	int bytes;
 	PRIntervalTime start,
 	      connect_done,
 	      read_done,
 	      write_done,
 	      close_done;
 	PRStatus rv;
 #ifdef DEBUG
 	fprintf(stdout, "client thread %d alive\n", *id);
 #endif
 	data_buffer_size = (_client_data>_server_data?_client_data:_server_data);
 	if ( (data_buffer = (char *)PR_Malloc(data_buffer_size * sizeof(char))) == NULL) {
 		fprintf(stderr, "Error creating buffer in server thread %d\n", *id);
 		goto done;
 	}
 	memset(&sa, 0 , sizeof(sa));
 	rv = PR_InitializeNetAddr(PR_IpAddrLoopback, PORT_BASE + *id, &sa);
 	PR_ASSERT(PR_SUCCESS == rv);
 	for (index = 0; index< _iterations; index++) {
 #ifdef DEBUG
 	fprintf(stdout, "client thread %d loop %d\n", *id, index);
 #endif
 		start = PR_IntervalNow();
 		if ( (sock_h = PR_NewTCPSocket()) == NULL) {
 			fprintf(stderr, "Error creating socket %d in client thread %d\n",
 				index, *id);
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "client thread %d socket created %d\n", *id, sock_h);
 #endif
 		if ( PR_Connect(sock_h, &sa,
 				PR_INTERVAL_NO_TIMEOUT) < 0) {
 			fprintf(stderr, "Error accepting connection %d in client thread %d\n",
 				index, *id);
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "client thread %d socket connected %d\n", *id, sock_h);
 #endif
 		connect_done = PR_IntervalNow();
 		if ( PR_Send(sock_h, data_buffer, _client_data, 0,
 				PR_INTERVAL_NO_TIMEOUT) < _client_data) {
 			fprintf(stderr, "Error sending client data for iteration %d in client thread %d\n", index, *id );
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "client thread %d socket wrote %d\n", *id, _client_data);
 #endif
 		write_done = PR_IntervalNow();
 		if ( (bytes = _readn(sock_h, data_buffer, _server_data)) < _server_data) {
 			fprintf(stderr, "Error reading server data for iteration %d in client thread %d (read %d bytes)\n", index, *id, bytes );
 			goto done;
 		}
 #ifdef DEBUG
 	fprintf(stdout, "client thread %d socket read %d\n", *id, _server_data);
 #endif
 		read_done = PR_IntervalNow();
 		PR_Close(sock_h);
 		close_done = PR_IntervalNow();
 		timer_data[2*(*id)+1].d_connect += _delta(&start, &connect_done);
 		timer_data[2*(*id)+1].d_cl_data += _delta(&connect_done, &write_done);
 		timer_data[2*(*id)+1].d_sv_data += _delta(&write_done, &read_done);
 		timer_data[2*(*id)+1].d_close += _delta(&read_done, &close_done);
 		timer_data[2*(*id)+1].d_total += _delta(&start, &close_done);
 		timer_data[2*(*id)+1].requests++;
 	}
 done:
 	if (data_buffer != NULL) PR_Free (data_buffer);
 	_thread_exit(*id);
 	return;
 }
 static
 void do_work(void)
 {
     int index;
 	_thread_exit_count = _threads * 2;
 	for (index=0; index<_threads; index++) {
 		PRThread *thread;
 		int *id = (int *)PR_Malloc(sizeof(int));
 		*id = index;
 		if ( (thread = PR_CreateThread(PR_USER_THREAD,
                                        _server_thread,
                                        id,
                                        PR_PRIORITY_NORMAL,
                                        scope1,
                                        PR_UNJOINABLE_THREAD,
 )) == NULL)
 			fprintf(stderr, "Error creating server thread %d\n", index);
 	}
 	PR_EnterMonitor(exit_cv);
 	while (_thread_exit_count > 0)
 		PR_Wait(exit_cv, PR_INTERVAL_NO_TIMEOUT);
 	PR_ExitMonitor(exit_cv);
 	fprintf(stdout, "TEST COMPLETE!\n");
 	tally_results(verbose);
 }
 static void do_workUU(void)
 {
     scope1 = PR_LOCAL_THREAD;
     scope2 = PR_LOCAL_THREAD;
     do_work();
 }
 static void do_workUK(void)
 {
     scope1 = PR_LOCAL_THREAD;
     scope2 = PR_GLOBAL_THREAD;
     do_work();
 }
 static void do_workKU(void)
 {
     scope1 = PR_GLOBAL_THREAD;
     scope2 = PR_LOCAL_THREAD;
     do_work();
 }
 static void do_workKK(void)
 {
     scope1 = PR_GLOBAL_THREAD;
     scope2 = 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);
     printf("%40s: %6.2f usec\n", msg, d / _iterations);
 }
 int main(int argc, char **argv)
 {
 #if defined(XP_UNIX) || defined(XP_OS2)
 	int opt;
 	PR_IMPORT_DATA(char *) optarg;
 #endif
 #if defined(XP_UNIX) || defined(XP_OS2)
 	while ( (opt = getopt(argc, argv, "c:s:i:t:v")) != EOF) {
 		switch(opt) {
 			case 'i':
 				_iterations = atoi(optarg);
 				break;
 			case 't':
 				_threads_max = _threads = atoi(optarg);
 				break;
 			case 'c':
 				_client_data = atoi(optarg);
 				break;
 			case 's':
 				_server_data = atoi(optarg);
 				break;
 			case 'v':
 				verbose = 1;
 				break;
 			default:
 				break;
 		}
 	}
 #endif
 	PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
     PR_STDIO_INIT();
 	fprintf(stdout, "Running test for %d iterations with %d simultaneous threads.\n",
 		_iterations, _threads);
 	fprintf(stdout, "\tWill send %d bytes of client data and %d bytes of server data\n",
 		_client_data, _server_data);
 	if ( (exit_cv = PR_NewMonitor()) == NULL)
 		fprintf(stderr, "Error creating monitor for exit cv\n");
 	if ( (timer_data = (timer_slot_t *)PR_Malloc(2*_threads * sizeof(timer_slot_t))) == NULL)
 		fprintf(stderr, "error allocating thread time results array\n");
 	memset(timer_data, 0 , 2*_threads*sizeof(timer_slot_t));
     Measure(do_workUU, "select loop user/user");
     Measure(do_workUK, "select loop user/kernel");
     Measure(do_workKU, "select loop kernel/user");
     Measure(do_workKK, "select loop kernel/kernel");
 	return 0;
 }
 void
 tally_results(int verbose)
 {
 	int index;
 	unsigned long tot_connect = 0;
 	unsigned long tot_cl_data = 0;
 	unsigned long tot_sv_data = 0;
 	unsigned long tot_close = 0;
 	unsigned long tot_all = 0;
 	unsigned long tot_requests = 0;
 	fprintf(stdout, "Server results:\n\n");
 	for (index=0; index<_threads_max*2; index+=2) {
 		if (verbose)
 			fprintf(stdout, "server thread %u\t%u\t%u\t%u\t%u\t%u\t%u\n",
 				index, timer_data[index].requests, timer_data[index].d_connect,
 				timer_data[index].d_cl_data, timer_data[index].d_sv_data,
 				timer_data[index].d_close, timer_data[index].d_total);
 		tot_connect += timer_data[index].d_connect / _threads;
 		tot_cl_data += timer_data[index].d_cl_data / _threads;
 		tot_sv_data += timer_data[index].d_sv_data / _threads;
 		tot_close += timer_data[index].d_close / _threads;
 		tot_all += timer_data[index].d_total / _threads;
 		tot_requests += timer_data[index].requests / _threads;
 	}
 	fprintf(stdout, "----------\n");
 	fprintf(stdout, "server per thread totals %u\t%u\t%u\t%u\t%u\n",
 		tot_requests, tot_connect, tot_cl_data, tot_sv_data, tot_close);
 	fprintf(stdout, "server per thread elapsed time %u\n", tot_all);
 	fprintf(stdout, "----------\n");
 	tot_connect = tot_cl_data = tot_sv_data = tot_close = tot_all = tot_requests = 0;
 	fprintf(stdout, "Client results:\n\n");
 	for (index=1; index<_threads_max*2; index+=2) {
 		if (verbose)
 			fprintf(stdout, "client thread %u\t%u\t%u\t%u\t%u\t%u\t%u\n",
 				index, timer_data[index].requests, timer_data[index].d_connect,
 				timer_data[index].d_cl_data, timer_data[index].d_sv_data,
 				timer_data[index].d_close, timer_data[index].d_total);
 		tot_connect += timer_data[index].d_connect / _threads;
 		tot_cl_data += timer_data[index].d_cl_data / _threads;
 		tot_sv_data += timer_data[index].d_sv_data / _threads;
 		tot_close += timer_data[index].d_close / _threads;
 		tot_all += timer_data[index].d_total / _threads;
 		tot_requests += timer_data[index].requests / _threads;
 	}
 	fprintf(stdout, "----------\n");
 	fprintf(stdout, "client per thread totals %u\t%u\t%u\t%u\t%u\n",
 		tot_requests, tot_connect, tot_cl_data, tot_sv_data, tot_close);
 	fprintf(stdout, "client per thread elapsed time %u\n", tot_all);
 }

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nsprpub/pr/tests/sel_spd.c@b8a032363ba2 (annotated)

nsprpub/pr/tests/sel_spd.c