int
main(int argc, char **argv)
{
int n, scope;
pthread_t t;
pthread_attr_t attr;
struct sched_param param;
unsigned seed = 1;
Pthread_attr_init(&attr);
if (argc == 1) {
printf("PTHREAD_SCOPE_PROCESS\n");
Pthread_attr_setscope(&attr, PTHREAD_SCOPE_PROCESS);
}
else {
printf("PTHREAD_SCOPE_SYSTEM\n");
Pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
}
Pthread_attr_getschedparam(&attr, ¶m);
printf("sched_priority %d\n", param.sched_priority);
Pthread_mutex_lock(&m);
for (n = 0; n < 20; ++n) {
param.sched_priority = rand_r(&seed) % 128;
printf("creating thread %02d prio %02d\n",
n, param.sched_priority);
Pthread_attr_setschedparam(&attr, ¶m);
Pthread_create(&t, &attr, Thread, (void *)n);
}
sleep(1);
Pthread_mutex_unlock(&m);
pthread_exit(NULL);
}
void
my_create(door_info_t *iptr)
{
pthread_t tid;
pthread_attr_t attr;
printf("tserver1: iptr = %p\n", iptr);
Pthread_attr_init(&attr);
Pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
Pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
Pthread_create(&tid, &attr, my_thread, (void *) iptr->di_proc);
Pthread_attr_destroy(&attr);
printf("created server thread %ld\n", pr_thread_id(&tid));
}
int
main(int argc, char **argv)
{
int n;
pthread_t t, t1, t2;
pthread_attr_t attr;
Pthread_attr_init(&attr);
Pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
Pthread_create(&t, &attr, SumThread, NULL);
Pthread_create(&t1, &attr, InsThread, NULL);
Pthread_create(&t2, &attr, InsThread, NULL);
Pthread_join(t1, NULL);
Pthread_join(t2, NULL);
return 0;
}
int
main(int argc, char **argv)
{
int n, e;
unsigned prod_sum, cons_sum;
struct thread_data *data;
pthread_attr_t attr;
int canceled = 0;
pthread_t tid;
if (argc > 1 && !strcmp("-", argv[1]))
Error("usage: %s num_producers num_consumers "
"num_items maxbuflen busy-loops", argv[0]);
if (argc > 1) {
num_producers = atoi(argv[1]);
if (num_producers < 0)
num_producers = 1;
if (num_producers > MAXPRODUCERS)
num_producers = MAXPRODUCERS;
}
if (argc > 2) {
num_consumers = atoi(argv[2]);
if (num_consumers < 0)
num_consumers = 1;
if (num_consumers > MAXCONSUMERS)
num_consumers = MAXCONSUMERS;
}
if (argc > 3) {
num_items = atoi(argv[3]);
if (num_items < 0)
num_items = 0;
}
if (argc > 4) {
maxbuflen = atoi(argv[4]);
if (maxbuflen < 0)
maxbuflen = 1;
if (maxbuflen > MAXBUFLEN)
maxbuflen = MAXBUFLEN;
}
if (argc > 5)
busy_loops = atoi(argv[5]);
printf("num_producers %d num_consumers %d num_items %d "
"maxbuflen %d busy-loops %d\n",
num_producers, num_consumers, num_items, maxbuflen, busy_loops);
num_items /= num_producers; /* items/producer */
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGINT);
Pthread_sigmask(SIG_BLOCK, &sigmask, NULL);
Pthread_attr_init(&attr);
Pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
/* Starte die Producer */
for (n = 0; n < num_producers; ++n) {
data = malloc(sizeof(struct thread_data));
if (!data)
Error("malloc");
data->seed = n;
data->no = n;
producer_data[n] = data;
Pthread_create(&producers[n], &attr, Producer, data);
}
/* Starte die Consumer */
for (n = 0; n < num_consumers; ++n) {
data = malloc(sizeof(struct thread_data));
if (!data)
Error("malloc");
data->no = n;
Pthread_create(&consumers[n], &attr, Consumer, data);
}
Pthread_create(&tid, &attr, SigThread, NULL);
/* Warte auf alle Producer */
prod_sum = 0;
for (n = 0; n < num_producers; ++n) {
Pthread_join(producers[n], (void **)&data);
if (data == PTHREAD_CANCELED)
canceled = 1;
prod_sum += producer_data[n]->sum;
}
if (canceled)
printf("*** program was cancelled\n");
/* setze eof und wecke consumer auf */
Pthread_mutex_lock(&buf_mutex);
eof = 1;
Pthread_mutex_unlock(&buf_mutex);
Pthread_cond_broadcast(&empty_cond);
/* Warte auf alle Consumer */
cons_sum = 0;
for (n = 0; n < num_consumers; ++n) {
Pthread_join(consumers[n], (void **)&data);
cons_sum += data->sum;
}
printf("prot_sum %u cons_sum %u\n", prod_sum, cons_sum);
if (cons_sum != prod_sum)
printf("ERROR\n");
return 0;
}
/*************************************************
* Function: Pthread_attr_set()
* Description: 设置线程属性包裹函数
* 默认线程属性：
* 1.不继承创建线程的调度策略和参数,使用设置的参数
* 2.系统范围内争抢CPU
* 3.线程采用SCHED_RR调度算法
* 4.线程分离属性
* 5.线程优先级:在调度策略的优先级minPriority~maxPriority范围内
* 6.线程栈大小属性：最小为16k
* Input: *attr---线程属性结构
* priority---线程优先级
* stacksize---线程栈大小
* Output: *attr---线程属性结构
* Return: 0/error
*************************************************/
int Pthread_attr_set(pthread_attr_t *attr, int priority, size_t stacksize)
{
int rval;
if(attr == AII_NULL)
{
return -1;
}
/*初始化线程属性结构*/
rval = Pthread_attr_init(attr);
if (rval != 0)
{
return rval;
}
/*不继承创建线程的调度策略和参数*/
rval = Pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
if (rval != 0)
{
Pthread_attr_destroy(attr);
return rval;
}
/*系统范围内争抢CPU*/
rval = Pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM);
if (rval != 0)
{
Pthread_attr_destroy(attr);
return rval;
}
/*线程采用SCHED_RR调度算法*/
rval = Pthread_attr_setschedpolicy(attr, SCHED_RR);
if (rval != 0)
{
Pthread_attr_destroy(attr);
return rval;
}
/*设置线程分离属性:线程结束后，由系统自动回收资源*/
rval = Pthread_attr_setdetachstate(attr, PTHREAD_CREATE_DETACHED);
if (rval != 0)
{
Pthread_attr_destroy(attr);
return rval;
}
/*设置线程优先级属性*/
rval = Pthread_attr_setschedpriority(attr, priority);
if (rval != 0)
{
Pthread_attr_destroy(attr);
return rval;
}
/*设置线程栈大小属性*/
rval = Pthread_attr_setstacksize(attr, stacksize);
if (rval != 0)
{
Pthread_attr_destroy(attr);
return rval;
}
return 0;
}
int
main(int argc, char **argv)
{
int n, k, e;
unsigned prod_sum, cons_sum;
pthread_attr_t attr;
struct packet *p;
int packets_per_producer;
if (argc > 1 && !strcmp("-", argv[1]))
Error("usage: %s num_producers num_consumers "
"num_items buflen busy-loops", argv[0]);
if (argc > 1) {
num_producers = atoi(argv[1]);
if (num_producers < 0)
num_producers = 1;
if (num_producers > MAXPRODUCERS)
num_producers = MAXPRODUCERS;
}
if (argc > 2) {
num_consumers = atoi(argv[2]);
if (num_consumers < 0)
num_consumers = 1;
if (num_consumers > MAXCONSUMERS)
num_consumers = MAXCONSUMERS;
}
if (argc > 3) {
num_items = atoi(argv[3]);
if (num_items < 0)
num_items = 0;
}
if (argc > 4) {
buflen = atoi(argv[4]);
if (buflen < 1)
buflen = 1;
}
if (argc > 5)
busy_loops = atoi(argv[5]);
printf("num_producers %d num_consumers %d num_items %d "
"buflen %d busy-loops %d\n",
num_producers, num_consumers, num_items, buflen, busy_loops);
num_items /= num_producers; /* items/producer */
Pthread_attr_init(&attr);
Pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
/* Producer Datenstruktur */
packets_per_producer = (num_producers + num_consumers) * 2;
for (n = 0; n < num_producers; ++n) {
Pthread_mutex_init(&producers[n].queue_mutex, NULL);
Pthread_cond_init(&producers[n].empty_cond, NULL);
producers[n].seed = n;
producers[n].no = n;
producers[n].emptyPacketQueue = NULL;
for (k = 0; k < packets_per_producer; ++k) {
p = malloc(sizeof(struct packet) +
(buflen - 1) * sizeof(unsigned));
if (!p)
Error("malloc");
p->owner = n;
p->next = producers[n].emptyPacketQueue;
producers[n].emptyPacketQueue = p;
}
}
/* Consumer Datenstruktur */
for (n = 0; n < num_consumers; ++n) {
Pthread_mutex_init(&consumers[n].queue_mutex, NULL);
Pthread_cond_init(&consumers[n].empty_cond, NULL);
consumers[n].no = n;
consumers[n].eof = 0;
consumers[n].fullPacketQueue = NULL;
}
/* Starte die Producer */
for (n = 0; n < num_producers; ++n)
Pthread_create(&producers[n].tid, &attr,
Producer, &producers[n]);
/* Starte die Consumer */
for (n = 0; n < num_consumers; ++n)
Pthread_create(&consumers[n].tid, &attr,
Consumer, &consumers[n]);
/* Warte auf alle Producer */
prod_sum = 0;
for (n = 0; n < num_producers; ++n) {
Pthread_join(producers[n].tid, NULL);
prod_sum += producers[n].sum;
}
/* setze eof und wecke consumer auf */
for (n = 0; n < num_consumers; ++n) {
Pthread_mutex_lock(&consumers[n].queue_mutex);
consumers[n].eof = 1;
Pthread_mutex_unlock(&consumers[n].queue_mutex);
Pthread_cond_broadcast(&consumers[n].empty_cond);
}
/* Warte auf alle Consumer */
cons_sum = 0;
for (n = 0; n < num_consumers; ++n) {
Pthread_join(consumers[n].tid, NULL);
cons_sum += consumers[n].sum;
}
printf("prot_sum %u cons_sum %u\n", prod_sum, cons_sum);
if (cons_sum != prod_sum)
printf("ERROR\n");
return 0;
}