p5-9.c

SUN Solaris8平台下进程间通信

#include <setjmp.h>
#include <stdio.h>
static void f1(int*,int,int);
static void f2(void);
static jmp_buf jmpbuffer;
int main(void)
{
    int count;
    volatile int sum;
    register int val;
    count=2; val=3; sum=4;
    if(setjmp(jmpbuffer)!=0) {
        printf("after longjmp: count=%d,val=%d,sum=%d\n",
            count,val,sum);
        exit(0);
    }
    count=96; val=97; sum=99;
    f1(&count,val,sum);
}
static void f1(int *i,int j, int k) 
{
    printf("      in f1(): count=%d,val=%d,sum=%d\n",*i,j,k);
    f2();
}
static void f2(void)
{
    longjmp(jmpbuffer,1);
}