使用pthread_mutex_init

参考自： http://www.cnblogs.com/hnrainll/archive/2011/04/22/2025225.html

#include <pthread.h>
#include <stdio.h>
#include <string.h>
pthread_mutex_t pattr; 
void* func(void* arg){
	pthread_mutex_lock(&pattr);		
	char* str = (char*)arg;
	while(*str != '\0'){
		fputc(*str, stdout);
		str++;
	}
	fputc('\n', stdout);
	pthread_mutex_unlock(&pattr);		
}
int main(){
	pthread_mutex_init(&pattr, NULL);	
	pthread_t p1, p2; 
	char str1[8], str2[8]; 
	sprintf(str1, "abcdefg");
	sprintf(str2, "1234567");
	int ret;
	if((ret = pthread_create(&p1, NULL, func, str1)) != 0){
		fprintf(stderr, "create thread error. msg:%s", strerror(ret));
	}
	if((ret = pthread_create(&p2, NULL, func, str2)) != 0){
		fprintf(stderr, "create thread error. msg:%s", strerror(ret));
	}
	pthread_join(p1, NULL);
	pthread_join(p2, NULL);
}