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230 lines
8.0 KiB
C
230 lines
8.0 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nspr.h"
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#include "plgetopt.h"
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#include <stdlib.h>
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#include <string.h>
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#ifndef IOV_MAX
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#define IOV_MAX 16
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#endif
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#define BASE_PORT 9867
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int PR_CALLBACK Writev(int argc, char **argv)
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{
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PRStatus rv;
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PRNetAddr serverAddr;
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PRFileDesc *clientSock, *debug = NULL;
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char *buffer = NULL;
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PRIOVec *iov = NULL;
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PRBool passed = PR_TRUE;
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PRIntervalTime timein, elapsed, timeout;
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PRIntervalTime tmo_min = 0x7fffffff, tmo_max = 0, tmo_elapsed = 0;
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PRInt32 tmo_counted = 0, iov_index, loop, bytes, number_fragments;
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PRInt32 message_length = 100, fragment_length = 100, messages = 100;
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struct Descriptor { PRInt32 length; PRUint32 checksum; } descriptor;
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/*
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* USAGE
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* -h dns name of host serving the connection (default = self)
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* -m number of messages to send (default = 100)
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* -s size of each message (default = 100)
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* -f size of each message fragment (default = 100)
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*/
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PLOptStatus os;
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PLOptState *opt = PL_CreateOptState(argc, argv, "dh:m:s:f:");
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PR_STDIO_INIT();
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rv = PR_InitializeNetAddr(PR_IpAddrLoopback, BASE_PORT, &serverAddr);
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PR_ASSERT(PR_SUCCESS == rv);
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while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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{
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if (PL_OPT_BAD == os) continue;
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switch (opt->option)
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{
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case 'h': /* the remote host */
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{
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PRIntn es = 0;
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PRHostEnt host;
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char buffer[1024];
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(void)PR_GetHostByName(opt->value, buffer, sizeof(buffer), &host);
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es = PR_EnumerateHostEnt(es, &host, BASE_PORT, &serverAddr);
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PR_ASSERT(es > 0);
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}
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break;
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case 'd': /* debug mode */
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debug = PR_GetSpecialFD(PR_StandardError);
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break;
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case 'm': /* number of messages to send */
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messages = atoi(opt->value);
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break;
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case 's': /* total size of each message */
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message_length = atoi(opt->value);
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break;
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case 'f': /* size of each message fragment */
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fragment_length = atoi(opt->value);
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break;
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default:
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break;
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}
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}
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PL_DestroyOptState(opt);
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buffer = (char*)malloc(message_length);
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number_fragments = (message_length + fragment_length - 1) / fragment_length + 1;
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while (IOV_MAX < number_fragments)
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{
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fragment_length = message_length / (IOV_MAX - 2);
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number_fragments = (message_length + fragment_length - 1) /
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fragment_length + 1;
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if (NULL != debug) PR_fprintf(debug,
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"Too many fragments - reset fragment length to %ld\n", fragment_length);
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}
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iov = (PRIOVec*)malloc(number_fragments * sizeof(PRIOVec));
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iov[0].iov_base = (char*)&descriptor;
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iov[0].iov_len = sizeof(descriptor);
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for (iov_index = 1; iov_index < number_fragments; ++iov_index)
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{
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iov[iov_index].iov_base = buffer + (iov_index - 1) * fragment_length;
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iov[iov_index].iov_len = fragment_length;
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}
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for (bytes = 0; bytes < message_length; ++bytes)
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buffer[bytes] = (char)bytes;
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timeout = PR_SecondsToInterval(1);
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for (loop = 0; loop < messages; ++loop)
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{
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if (NULL != debug)
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PR_fprintf(debug, "[%d]socket ... ", loop);
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clientSock = PR_NewTCPSocket();
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if (clientSock)
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{
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timein = PR_IntervalNow();
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if (NULL != debug)
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PR_fprintf(debug, "connecting ... ");
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rv = PR_Connect(clientSock, &serverAddr, timeout);
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if (PR_SUCCESS == rv)
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{
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descriptor.checksum = 0;
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descriptor.length = (loop < (messages - 1)) ? message_length : 0;
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if (0 == descriptor.length) number_fragments = 1;
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else
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for (iov_index = 0; iov_index < descriptor.length; ++iov_index)
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{
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PRUint32 overflow = descriptor.checksum & 0x80000000;
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descriptor.checksum = (descriptor.checksum << 1);
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if (0x00000000 != overflow) descriptor.checksum += 1;
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descriptor.checksum += buffer[iov_index];
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}
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if (NULL != debug) PR_fprintf(
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debug, "sending %d bytes ... ", descriptor.length);
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/* then, at the last moment ... */
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descriptor.length = PR_ntohl(descriptor.length);
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descriptor.checksum = PR_ntohl(descriptor.checksum);
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bytes = PR_Writev(clientSock, iov, number_fragments, timeout);
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if (NULL != debug)
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PR_fprintf(debug, "closing ... ");
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rv = PR_Shutdown(clientSock, PR_SHUTDOWN_BOTH);
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rv = PR_Close(clientSock);
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if (NULL != debug) PR_fprintf(
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debug, "%s\n", ((PR_SUCCESS == rv) ? "good" : "bad"));
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elapsed = PR_IntervalNow() - timein;
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if (elapsed < tmo_min) tmo_min = elapsed;
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else if (elapsed > tmo_max) tmo_max = elapsed;
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tmo_elapsed += elapsed;
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tmo_counted += 1;
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}
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else
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{
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if (NULL != debug) PR_fprintf(
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debug, "failed - retrying (%d, %d)\n",
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PR_GetError(), PR_GetOSError());
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PR_Close(clientSock);
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}
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}
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else if (NULL != debug)
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{
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PR_fprintf(debug, "unable to create client socket\n");
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passed = PR_FALSE;
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}
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}
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if (NULL != debug) {
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if (0 == tmo_counted) {
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PR_fprintf(debug, "No connection made\n");
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} else {
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PR_fprintf(
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debug, "\nTimings: %d [%d] %d (microseconds)\n",
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PR_IntervalToMicroseconds(tmo_min),
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PR_IntervalToMicroseconds(tmo_elapsed / tmo_counted),
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PR_IntervalToMicroseconds(tmo_max));
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}
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}
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PR_DELETE(buffer);
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PR_DELETE(iov);
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PR_fprintf(
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PR_GetSpecialFD(PR_StandardError),
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"%s\n", (passed) ? "PASSED" : "FAILED");
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return (passed) ? 0 : 1;
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}
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int main(int argc, char **argv)
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{
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return (PR_VersionCheck(PR_VERSION)) ?
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PR_Initialize(Writev, argc, argv, 4) : -1;
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} /* main */
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/* writev.c */
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