#include <stdio.h>
#include <pthread.h>
pthread_t work1Id;
pthread_t work2Id;
int work1Ret = 1;
int work2Ret = 2;
pthread_cond_t cond_ready = PTHREAD_COND_INITIALIZER;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
int number = 0;
void* Work1(void* args)
{
int i = 0;
printf("I am work%d\n", *((int*)args));
for(i = 0; i < 10; i++)
{
pthread_mutex_lock(&mutex);
number++;
if(number%2==0)
{
printf("I am work%d, Finish\n", *((int*)args));
pthread_cond_signal(&cond_ready);
sleep(1);
}
pthread_mutex_unlock(&mutex);
printf("I am work%d, number = %d and unlock \n", *((int*)args), number);
sleep(1);
}
return &work1Ret;
}
void* Work2(void* args)
{
printf("I am work%d\n", *((int*)args));
while(number <10)
{
pthread_mutex_lock(&mutex);
if(number <= 10)
{
pthread_cond_wait(&cond_ready, &mutex);
printf("I am work%d, number = %d receive SIG\n", *((int*)args), number);
}
pthread_mutex_unlock(&mutex);
}
return &work2Ret;
}
int main()
{
int args1 = 1;
int args2 = 2;
void* work1Ret = NULL;
void* work2Ret = NULL;
pthread_create(&work1Id, NULL, Work1, &args1);
pthread_create(&work2Id, NULL, Work2, &args2);
pthread_join(work1Id, &work1Ret);
if(work1Ret != NULL)
{
printf("work1Ret = %d\n", *((int*)work1Ret));
}
pthread_join(work2Id, &work2Ret);
if(work2Ret != NULL)
{
printf("work2Ret = %d\n", *((int*)work2Ret));
}
return 0;
}
