<HTML> <!-- ex01.html,v 1.2 2000/06/04 22:02:08 brunsch Exp --> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Author" CONTENT="Ambreen Ilyas"> <META NAME="GENERATOR" CONTENT="Mozilla/4.05 [en] (X11; I; SunOS 5.5.1 sun4u) [Netscape]"> <TITLE>Example 1</TITLE> </HEAD> <BODY> <FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT> <BR><FONT COLOR="#CC0000">//// This example is from the ACE Programmers Guide.</FONT> <BR><FONT COLOR="#CC0000">//// Chapter: "Thread Management"</FONT> <BR><FONT COLOR="#CC0000">//// For details please see the guide at</FONT> <BR><FONT COLOR="#CC0000">//// http://www.cs.wustl.edu/~schmidt/ACE.html</FONT> <BR><FONT COLOR="#CC0000">//// AUTHOR: Umar Syyid (usyyid@hns.com)</FONT> <BR><FONT COLOR="#CC0000">//// and Ambreen Ilyas (ambreen@bitsmart.com)</FONT> <BR><FONT COLOR="#CC0000">/////////////////////////////////////////////////////////////////////////////////////////////////////////////</FONT> <P><FONT COLOR="#CC0000">//Example 1</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/Thread.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/OS.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT> <FONT COLOR="#006600">"ace/Synch_T.h"</FONT> <BR><FONT COLOR="#000099">#include</FONT><FONT COLOR="#006600"> "ace/Synch.h"</FONT> <BR>static int number=0; <BR>static int seed=0; <P>static void* <BR>worker(void *arg){ <BR> ACE_UNUSED_ARG(arg); <BR> ACE_DEBUG((LM_DEBUG,"Thread (%t) Created to do some work")); <BR> ::number++; <BR> ACE_DEBUG((LM_DEBUG," and number is %d\n",::number)); <BR> <BR> <FONT COLOR="#FF0000">//Let the other guy go while I fall asleep for a random period of time</FONT> <BR> ACE_Thread::yield(); <BR> ACE_OS::sleep(ACE_OS::rand()%2); <P><FONT COLOR="#FF0000"> //Exiting now</FONT> <BR> ACE_DEBUG((LM_DEBUG, <BR> "\t\t Thread (%t) Done! \t The number is now: %d\n",number)); <BR> ACE_OS::fflush(stdout); <BR> return 0; <BR> } <BR> <P>int main(int argc, char *argv[]){ <BR>if(argc<2) <BR> ACE_DEBUG((LM_DEBUG,"Usage: <program_name> <number of threads>\n")); <BR> <BR>int n_threads=ACE_OS::atoi(argv[1]); <BR><FONT COLOR="#FF0000">//Setup the random number generator</FONT> <BR>ACE_OS::srand(::seed); <P><FONT COLOR="#FF0000">//Spawn off n_threads number of threads</FONT> <BR>for(int i=0; i<n_threads; i++){ <BR> if(ACE_Thread::spawn((ACE_THR_FUNC)worker)==-1) <BR> ACE_DEBUG((LM_DEBUG,"Error in spawning thread\n")); <BR> } <P><FONT COLOR="#FF0000">//Wait for all the threads to exit before you let the main fall through</FONT> <BR><FONT COLOR="#FF0000">//and have the process exit. This way of using join is non-portable</FONT> <BR><FONT COLOR="#FF0000">//and may not work on a system using pthreads.</FONT> <BR>int check_count=0; <BR>while(ACE_Thread::join(NULL,NULL,NULL)==0) check_count++; <BR>ACE_ASSERT(check_count==n_threads); <BR>} <P> <A HREF="ex02.html">Next Example</A> <BR> </BODY> </HTML>