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我是 linux 线程信号量的新手。

没有错误,没有警告,结果输出。

发生这种情况的原因是什么?

我怀疑信号量被阻塞或无限循环。

任何人都可以在某些地方看到逻辑不正确吗?

初始化 sem 值:bin_sem = 0,pile_sem = 0,fuel_sem = 0

sem_t bin_sem, pile_sem, fuel_sem;

int pile=0, fuel=0, wantedMineralVal=3, foundMineral=-1;


int isFound(void){
    srand(time(NULL));
    return (rand()%8+1);
}

void checkResource(){
    if(fuel!=0 && pile!=0)
        sem_post(&bin_sem); 
}

void *deliverFuel(void *args){
    while(foundMineral!=wantedMineralVal){      
        sem_wait(&fuel_sem);
        fuel+=24;
        checkResource();
    }
}

void *deliverPile(void *args){
    while(foundMineral!=wantedMineralVal){
        sem_wait(&pile_sem);
        pile+=12;
        checkResource();
    }
}

void *drilling(void *args){
    do{ 
        foundMineral =  isFound();
        if(pile == 0 || fuel==0){
            sem_post(&pile_sem);
            sem_post(&fuel_sem);
            sem_wait(&bin_sem);
        }

    pile-=2;
    fuel-=4;

    }while(foundMineral!=wantedMineralVal);

}
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