Cesar D. Rodas

Java is very loved in the real world because you only write one time and compile and it should run on m$ and Unix like OS and others.

I was trying to do something with Java. A simple server soap client. Basically read a get from MySQL information and connect to many SOAP servers. I was trying to but I couldn’t, I had many problems in the thread creating with. Then I try to do this but in C, and it work.

Here I put a portion of my code for manage Thread, basically what it does is to create and destroy threads. And It was tested on m$, CentOS 4.x, CenOS 3.x, RH 9, and SuSE and works good.

The source is public domain.

saddor.thread.c

#include “saddor.threads.h”

uint NumberOfThreads; /* number of threads */

bool ThreadBegin(ThreadType * thread, void (*callback)(void *), void *parameter) {
#ifdef WIN32
*thread = _beginthread((void *)callback, 0, parameter);
if (thread == -1)
return false;
#else
if ( pthread_create(thread, NULL, callback, parameter) )
return false;
#endif
NumberOfThreads++;
return true;
}

saddor.threads.c

#ifndef STHREAD_H
#define STHREAD_H

#ifdef WIN32
#include <windows.h>
#define ThreadType int
#define ThreadEnd if (NumberOfThreads > 0) {NumberOfThreads–;} _endthread();
#else
#include <pthread.h>
#define closesocket(x) close(x)
#define ThreadType pthread_t
#define ThreadEnd if (NumberOfThreads > 0) NumberOfThreads–; pthread_exit(0);

#endif

#endif

example.c

#include <stdio.h>
#include <stdlib.h>
#include “saddor.thread.h”

void * threadtest(void *param)
{
int *i,e;
i= (int *)param;
for (e=0; e<100; e++) {
printf(”Thread %d: %d\n”,i,e);
}
ThreadEnd; // killing the thread

}
#ifndef WIN32

void Sleep(int mseconds) {
struct timespec timeOut,remains;
timeOut.tv_sec = 0;
timeOut.tv_nsec = (long)mseconds * 10000000; /* 50 milliseconds */
nanosleep(&timeOut, &remains);
}
#endif

int main(int argc, char *argv[])
{
int i;
ThreadType thread;
for(i=0; i < 1000; i++)
{
ThreadBegin(&thread, threadtest, (void*)i);
}
/* while the thread exist.. do something*/
while (NumberOfThreads > 0)
{
printf(”Number of threads %d\n\n”,NumberOfThreads);
Sleep(30); /* sleep 30 miliseconds*/
}

return 0;
}

I recomment to take a look here

Have a lot of fun with C

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This entry was posted on Friday, May 25th, 2007 at 4:02 pm and is filed under General. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.