int
main(int argc, char **argv)
{
int i, nloop, contpipe[2], datapipe[2];
pid_t childpid;
if (argc != 4)
err_quit("usage: bw_pipe <#loops> <#mbytes> <#bytes/write>");
nloop = atoi(argv[1]);
totalnbytes = atoi(argv[2]) * 1024 * 1024;
xfersize = atoi(argv[3]);
buf = Valloc(xfersize);
Touch(buf, xfersize);
Pipe(contpipe);
Pipe(datapipe);
if ( (childpid = Fork()) == 0) {
writer(contpipe[0], datapipe[1]); /* child */
exit(0);
}
/* 4parent */
Start_time();
for (i = 0; i < nloop; i++)
reader(contpipe[1], datapipe[0], totalnbytes);
printf("bandwidth: %.3f MB/sec\n",
totalnbytes / Stop_time() * nloop);
kill(childpid, SIGTERM);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nthreads;
pthread_t tid[MAXNTHREADS];
if (argc != 3)
err_quit("usage: incr_pxsem1 <#loops> <#threads>");
nloop = atoi(argv[1]);
nthreads = min(atoi(argv[2]), MAXNTHREADS);
/* 4initialize memory-based semaphore to 0 */
Sem_init(&shared.mutex, 0, 0);
/* 4create all the threads */
Set_concurrency(nthreads);
for (i = 0; i < nthreads; i++) {
Pthread_create(&tid[i], NULL, incr, NULL);
}
/* 4start the timer and release the semaphore */
Start_time();
Sem_post(&shared.mutex);
/* 4wait for all the threads */
for (i = 0; i < nthreads; i++) {
Pthread_join(tid[i], NULL);
}
printf("microseconds: %.0f usec\n", Stop_time());
if (shared.counter != nloop * nthreads)
printf("error: counter = %ld\n", shared.counter);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nloop, pipe1[2], pipe2[2];
char c;
pid_t childpid;
if (argc != 2)
err_quit("usage: lat_pipe <#loops>");
nloop = atoi(argv[1]);
Pipe(pipe1);
Pipe(pipe2);
if ( (childpid = Fork()) == 0) {
for ( ; ; ) { /* child */
if (Read(pipe1[0], &c, 1) != 1)
err_quit("read error");
Write(pipe2[1], &c, 1);
}
exit(0);
}
/* 4parent */
doit(pipe2[0], pipe1[1]);
Start_time();
for (i = 0; i < nloop; i++)
doit(pipe2[0], pipe1[1]);
printf("latency: %.3f usec\n", Stop_time() / nloop);
Kill(childpid, SIGTERM);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nloop, contpipe[2], msqid;
pid_t childpid;
if (argc != 4)
err_quit("usage: bw_svmsg <#loops> <#mbytes> <#bytes/write>");
nloop = atoi(argv[1]);
totalnbytes = atoi(argv[2]) * 1024 * 1024;
xfersize = atoi(argv[3]);
buf = Valloc(xfersize);
Touch(buf, xfersize);
buf->mtype = 1;
Pipe(contpipe);
msqid = Msgget(IPC_PRIVATE, IPC_CREAT | SVMSG_MODE);
if ( (childpid = Fork()) == 0) {
writer(contpipe[0], msqid); /* child */
exit(0);
}
Start_time();
for (i = 0; i < nloop; i++)
reader(contpipe[1], msqid, totalnbytes);
printf("bandwidth: %.3f MB/sec\n",
totalnbytes / Stop_time() * nloop);
kill(childpid, SIGTERM);
Msgctl(msqid, IPC_RMID, NULL);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nthreads;
pthread_t tid[MAXNTHREADS];
if (argc != 3)
err_quit("usage: incr_rwlock1 <#loops> <#threads>");
nloop = atoi(argv[1]);
nthreads = min(atoi(argv[2]), MAXNTHREADS);
/* 4obtain write lock */
Rw_wrlock(&shared.rwlock);
/* 4create all the threads */
Set_concurrency(nthreads);
for (i = 0; i < nthreads; i++) {
Pthread_create(&tid[i], NULL, incr, NULL);
}
/* 4start the timer and release the write lock */
Start_time();
Rw_unlock(&shared.rwlock);
/* 4wait for all the threads */
for (i = 0; i < nthreads; i++) {
Pthread_join(tid[i], NULL);
}
printf("microseconds: %.0f usec\n", Stop_time());
if (shared.counter != nloop * nthreads)
printf("error: counter = %ld\n", shared.counter);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nloop, signo;
pid_t childpid, parentpid;
sigset_t newmask;
if (argc != 2)
err_quit("usage: lat_sigwait <#loops>");
nloop = atoi(argv[1]);
Sigemptyset(&newmask);
Sigaddset(&newmask, SIGUSR1);
Sigprocmask(SIG_BLOCK, &newmask, NULL); /* block SIGUSR1 */
parentpid = getpid();
if ( (childpid = Fork()) == 0) {
for (i = 0; i < nloop; i++) { /* child */
Sigwait(&newmask, &signo);
Kill(parentpid, SIGUSR1);
}
exit(0);
}
/* 4parent */
Start_time();
for (i = 0; i < nloop; i++) {
Kill(childpid, SIGUSR1);
Sigwait(&newmask, &signo);
}
printf("latency: %.3f usec\n", Stop_time() / nloop);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nloop, doorfd, contpipe[2];
char c;
pid_t childpid;
door_arg_t arg;
if (argc != 3)
err_quit("usage: lat_door <pathname> <#loops>");
nloop = atoi(argv[2]);
unlink(argv[1]);
Close(Open(argv[1], O_CREAT | O_EXCL | O_RDWR, FILE_MODE));
Pipe(contpipe);
if ( (childpid = Fork()) == 0) {
doorfd = Door_create(server, NULL, 0);
Fattach(doorfd, argv[1]);
Write(contpipe[1], &c, 1);
for ( ; ; ) /* child = server */
pause();
exit(0);
}
arg.data_ptr = &c; /* parent = client */
arg.data_size = sizeof(char);
arg.desc_ptr = NULL;
arg.desc_num = 0;
arg.rbuf = &c;
arg.rsize = sizeof(char);
if (Read(contpipe[0], &c, 1) != 1) /* wait for child to create */
err_quit("pipe read error");
doorfd = Open(argv[1], O_RDWR);
Door_call(doorfd, &arg); /* once to start everything */
Start_time();
for (i = 0; i < nloop; i++)
Door_call(doorfd, &arg);
printf("latency: %.3f usec\n", Stop_time() / nloop);
Kill(childpid, SIGTERM);
unlink(argv[1]);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nthreads;
pthread_t tid[MAXNTHREADS];
union semun arg;
if (argc != 3)
err_quit("usage: incr_svsem2 <#loops> <#threads>");
nloop = atoi(argv[1]);
nthreads = min(atoi(argv[2]), MAXNTHREADS);
/* 4create semaphore and initialize to 0 */
shared.semid = Semget(IPC_PRIVATE, 1, IPC_CREAT | SVSEM_MODE);
arg.val = 0;
Semctl(shared.semid, 0, SETVAL, arg);
postop.sem_num = 0; /* and init the two semop() structures */
postop.sem_op = 1;
postop.sem_flg = SEM_UNDO;
waitop.sem_num = 0;
waitop.sem_op = -1;
waitop.sem_flg = SEM_UNDO;
/* 4create all the threads */
Set_concurrency(nthreads);
for (i = 0; i < nthreads; i++) {
Pthread_create(&tid[i], NULL, incr, NULL);
}
/* 4start the timer and release the semaphore */
Start_time();
Semop(shared.semid, &postop, 1); /* up by 1 */
/* 4wait for all the threads */
for (i = 0; i < nthreads; i++) {
Pthread_join(tid[i], NULL);
}
printf("microseconds: %.0f usec\n", Stop_time());
if (shared.counter != nloop * nthreads)
printf("error: counter = %ld\n", shared.counter);
Semctl(shared.semid, 0, IPC_RMID);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nloop;
mqd_t mq1, mq2;
char buff[MSGSIZE];
pid_t childpid;
struct mq_attr attr;
if (argc != 2)
err_quit("usage: lat_pxmsg <#loops>");
nloop = atoi(argv[1]);
attr.mq_maxmsg = MAXMSG;
attr.mq_msgsize = MSGSIZE;
mq1 = Mq_open(Px_ipc_name(NAME1), O_RDWR | O_CREAT, FILE_MODE, &attr);
mq2 = Mq_open(Px_ipc_name(NAME2), O_RDWR | O_CREAT, FILE_MODE, &attr);
if ( (childpid = Fork()) == 0) {
for ( ; ; ) { /* child */
if (Mq_receive(mq1, buff, MSGSIZE, NULL) != 1)
err_quit("mq_receive error");
Mq_send(mq2, buff, 1, 0);
}
exit(0);
}
/* 4parent */
doit(mq1, mq2);
Start_time();
for (i = 0; i < nloop; i++)
doit(mq1, mq2);
printf("latency: %.3f usec\n", Stop_time() / nloop);
Kill(childpid, SIGTERM);
Mq_close(mq1);
Mq_close(mq2);
Mq_unlink(Px_ipc_name(NAME1));
Mq_unlink(Px_ipc_name(NAME2));
exit(0);
}
int
main(int argc, char **argv)
{
int i, nthreads;
pthread_t tid[MAXNTHREADS];
if (argc != 3)
{
fprintf(stderr, "usage: incr_rwlock1 <#loops> <#threads>");
exit(EXIT_FAILURE);
}
nloop = atoi(argv[1]);
nthreads = min(atoi(argv[2]), MAXNTHREADS);
/* obtain write lock */
Pthread_rwlock_wrlock(&shared.rwlock);
/* create all the threads */
//Set_concurrency(nthreads);
for (i = 0; i < nthreads; i++) {
pthread_create(&tid[i], NULL, incr, NULL);
}
/* start the timer and release the write lock */
Start_time();
// 写锁释放之后，线程才可以运行
Pthread_rwlock_unlock(&shared.rwlock);
/* wait for all the threads */
for (i = 0; i < nthreads; i++) {
pthread_join(tid[i], NULL);
}
printf("microseconds: %.0f usec\n", Stop_time());
if (shared.counter != nloop * nthreads)
printf("error: counter = %ld\n", shared.counter);
else
printf("success: counter = %ld\n", shared.counter);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nprocs;
pid_t childpid[MAXNPROC];
if (argc != 3)
err_quit("usage: incr_rwlock5 <#loops> <#processes>");
nloop = atoi(argv[1]);
nprocs = min(atoi(argv[2]), MAXNPROC);
/* 4get shared memory for parent and children */
shared = My_shm(sizeof(struct shared));
/* 4initialize the read-write lock and obtain write lock */
Rwlock_init(&shared->rwlock, USYNC_PROCESS, NULL);
Rw_wrlock(&shared->rwlock);
/* 4create all the children */
for (i = 0; i < nprocs; i++) {
if ( (childpid[i] = Fork()) == 0) {
incr(NULL);
exit(0);
}
}
/* 4parent: start the timer and release the write lock */
Start_time();
Rw_unlock(&shared->rwlock);
/* 4wait for all the children */
for (i = 0; i < nprocs; i++) {
Waitpid(childpid[i], NULL, 0);
}
printf("microseconds: %.0f usec\n", Stop_time());
if (shared->counter != nloop * nprocs)
printf("error: counter = %ld\n", shared->counter);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nprocs;
pid_t childpid[MAXNPROC];
if (argc != 3)
err_quit("usage: incr_pxsem9 <#loops> <#processes>");
nloop = atoi(argv[1]);
nprocs = min(atoi(argv[2]), MAXNPROC);
/* 4get shared memory for parent and children */
shared = My_shm(sizeof(struct shared));
/* 4initialize memory-based semaphore to 0 */
Sem_init(&mutex, 1, 0);
/* 4create all the children */
for (i = 0; i < nprocs; i++) {
if ( (childpid[i] = Fork()) == 0) {
incr(NULL);
exit(0);
}
}
/* 4parent: start the timer and release the semaphore */
Start_time();
Sem_post(&mutex);
/* 4wait for all the children */
for (i = 0; i < nprocs; i++) {
Waitpid(childpid[i], NULL, 0);
}
printf("microseconds: %.0f usec\n", Stop_time());
if (shared->counter != nloop * nprocs)
printf("error: counter = %ld\n", shared->counter);
exit(0);
}
int
main(int argc, char **argv)
{
int i, nloop;
CLIENT *cl;
struct timeval tv;
if (argc != 4)
err_quit("usage: lat_sunrpc_client <hostname> <#loops> <protocol>");
nloop = atoi(argv[2]);
cl = Clnt_create(argv[1], BW_SUNRPC_PROG, BW_SUNRPC_VERS, argv[3]);
tv.tv_sec = 10;
tv.tv_usec = 0;
Start_time();
for (i = 0; i < nloop; i++) {
if (clnt_call(cl, NULLPROC, xdr_void, NULL,
xdr_void, NULL, tv) != RPC_SUCCESS)
err_quit("%s", clnt_sperror(cl, argv[1]));
}
printf("latency: %.3f usec\n", Stop_time() / nloop);
exit(0);
}