pthread with structure argument

java의 Atomic* 같은 타입이 당연히 없으므로, thread마다 각각 할당해서 넘겨줬음

#include 
#include 
#include 
#include 

pthread_t	threads[5];
int	done[5];

void* thread_main(void*);

typedef struct
{
	int	m_iThreadNum;
	char	m_cChar;
	long**	m_pplValues;
}	ThreadArg;

//	http://www.joinc.co.kr/modules/moniwiki/wiki.php/Site/Thread/Beginning/Example_pthread
//	gcc -o pthread1 pthread1.c -lpthread
int main(void)
{
	int	i, j, k, rc, status;
	ThreadArg*	ta	=	(ThreadArg*)malloc(sizeof(ThreadArg) * 5);;

	printf("pid = %d\n", getpid());

	for ( i = 0; i < 5; ++i )
	{
		done[i]	=	0;
		(ta + i)->m_iThreadNum	=	i;
		(ta + i)->m_cChar	=	'a' + i;
		(ta + i)->m_pplValues	=	(long**)malloc(sizeof(long*) * 2);
		for ( j = 0; j < 2; ++j )
		{
			*((ta + i)->m_pplValues + j)	=	(long*)malloc(sizeof(long) * 3);
			for ( k = 0; k < 3; ++k )
			*(*((ta + i)->m_pplValues + j) + k)	=	100 * (i + 1) + (j + 1) * (k + 1);
		}
		printf("ready to give arg: %d %c\n", (ta + i)->m_iThreadNum, (ta + i)->m_cChar);
		pthread_create(&threads[i], NULL, &thread_main, (void *)(ta + i));
		printf("%d, %d\n", i, threads[i]);
	}

	for ( i = 4; i >= 0; --i )
	{
		done[i]	=	1;
		rc	=	pthread_join(threads[i], (void**)&status);
		if ( rc == 0 )
		{
			printf("Completed join with %d status = %d, %d, %c\n",
					i, status, (ta + i)->m_iThreadNum, (ta + i)->m_cChar);
		}
		else
		{
			printf("ERROR; return code from pthread_join() is %d, thread %d\n",
					rc, i);
			return	-1;
		}
	}

	for ( i = 0; i < 5; ++i )
	{
		for ( j = 0; j < 2; ++j )
		{
			for ( k = 0; k < 3; ++k )
				printf("[%d][%d][%d] = %ld\n", i, j, k, *(*((ta + i)->m_pplValues + j) + k));
			free(*((ta + i)->m_pplValues + j));
		}
		free((ta + i)->m_pplValues);
	}
	free(ta);

	return	0;
}

void* thread_main(void* arg)
{
	int	i, j;
	double	result	=	0.0;

	ThreadArg*	ta	=	(ThreadArg*)arg;
	printf("thread {%d} received from %d integer %d\tchar %c\n",
			ta->m_iThreadNum, getpid(), ta->m_iThreadNum, ta->m_cChar);
	for ( i = 0; i < 2; ++i )
		for ( j = 0; j < 3; ++j )
			printf("\t{%d}[%d][%d] = %ld\n",
				ta->m_iThreadNum, i, j, *(*(ta->m_pplValues + i) + j));

	while ( !done[ta->m_iThreadNum] )
	{
		for ( i = 0; i < 1000000; ++i )
		{
			result	=	result + (double)random();
		}
		printf("thread: %d, result = %e\n", ta->m_iThreadNum, result);
	}
	ta->m_iThreadNum	=	ta->m_iThreadNum + 10;
	ta->m_cChar	=	ta->m_cChar + 10;
	for ( i = 0; i < 2; ++i )
		for ( j = 0; j < 3; ++j )
			*(*(ta->m_pplValues + i) + j)	*=	10;

	pthread_exit((void*) 0);
}