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Ejemplo de protothreads semaforos(PROBANDO)

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damaya
Usuario

Joined: 23 Jul 2006
Posts: 12

Posted: Wed Sep 27, 2006 12:02 am Post subject: Ejemplo de protothreads semaforos(PROBANDO)

Haciendo que las cosas funcionen...

Code:

#include "pt-sem.h"
#include <stdio.h>
int x;
int flag1;
int flag2;static struct pt_sem s1,s2;
PT_THREAD(proceso_a(struct pt *pt)){
int i;
PT_BEGIN(pt);
for(i=0;i<99999;i++){
   PT_SEM_WAIT(pt,&s1);
   x=x+1;
   PT_SEM_SIGNAL(pt,&s2);
}
PT_END(pt);
}
PT_THREAD(proceso_b(struct pt *pt)){
int i;
PT_BEGIN(pt);
for(i=0;i<99999;i++){
   PT_SEM_WAIT(pt,&s2);
   printf("%d ",x);
   PT_SEM_SIGNAL(pt,&s1);
}
PT_END(pt);
}

void main(){
static struct pt pt_a, pt_b;
int i;
PT_SEM_INIT(&s1, 0);
PT_SEM_INIT(&s2, 1);
flag1=0;
flag2=1;
x=0;
PT_INIT(&pt_a);
PT_INIT(&pt_b);
for(i=0;i<122;i++){
   proceso_b(&pt_b);
   proceso_a(&pt_a);
}
}

efutch
Administrador

Joined: 04 Jun 2006
Posts: 257
Location: Tegucigalpa, Honduras

Posted: Wed Sep 27, 2006 4:57 pm Post subject:

Tome nota de lo que dice la documentación de ProtoThreads:

Quote:

Local variables are not preserved.
A protothread runs within a single C function and cannot span over other functions. A protothread may call normal C functions, but cannot block inside a called function.

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