20 #include "JackPosixSemaphore.h" 21 #include "JackTools.h" 22 #include "JackConstants.h" 23 #include "JackError.h" 31 void JackPosixSemaphore::BuildName(
const char* client_name,
const char* server_name,
char* res,
int size)
33 char ext_client_name[SYNC_MAX_NAME_SIZE + 1];
34 JackTools::RewriteName(client_name, ext_client_name);
35 #if __APPLE__ // POSIX semaphore names are limited to 32 characters... 36 snprintf(res, 32,
"js_%s", ext_client_name);
38 if (getenv(
"JACK_PROMISCUOUS_SERVER")) {
39 snprintf(res, size,
"jack_sem.%s_%s", server_name, ext_client_name);
41 snprintf(res, size,
"jack_sem.%d_%s_%s", JackTools::GetUID(), server_name, ext_client_name);
46 bool JackPosixSemaphore::Signal()
51 jack_error(
"JackPosixSemaphore::Signal name = %s already deallocated!!", fName);
59 if ((res = sem_post(fSemaphore)) != 0) {
60 jack_error(
"JackPosixSemaphore::Signal name = %s err = %s", fName, strerror(errno));
65 bool JackPosixSemaphore::SignalAll()
70 jack_error(
"JackPosixSemaphore::SignalAll name = %s already deallocated!!", fName);
78 if ((res = sem_post(fSemaphore)) != 0) {
79 jack_error(
"JackPosixSemaphore::SignalAll name = %s err = %s", fName, strerror(errno));
84 bool JackPosixSemaphore::Wait()
89 jack_error(
"JackPosixSemaphore::Wait name = %s already deallocated!!", fName);
93 while ((res = sem_wait(fSemaphore) < 0)) {
94 jack_error(
"JackPosixSemaphore::Wait name = %s err = %s", fName, strerror(errno));
102 #if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) // glibc feature test 104 bool JackPosixSemaphore::TimedWait(
long usec)
111 jack_error(
"JackPosixSemaphore::TimedWait name = %s already deallocated!!", fName);
114 gettimeofday(&now, 0);
115 time.tv_sec = now.tv_sec + usec / 1000000;
116 long tv_usec = (now.tv_usec + (usec % 1000000));
117 time.tv_sec += tv_usec / 1000000;
118 time.tv_nsec = (tv_usec % 1000000) * 1000;
120 while ((res = sem_timedwait(fSemaphore, &time)) < 0) {
121 jack_error(
"JackPosixSemaphore::TimedWait err = %s", strerror(errno));
122 jack_log(
"JackPosixSemaphore::TimedWait now : %ld %ld ", now.tv_sec, now.tv_usec);
123 jack_log(
"JackPosixSemaphore::TimedWait next : %ld %ld ", time.tv_sec, time.tv_nsec/1000);
124 if (errno != EINTR) {
132 #warning "JackPosixSemaphore::TimedWait is not supported: Jack in SYNC mode with JackPosixSemaphore will not run properly !!" 134 bool JackPosixSemaphore::TimedWait(
long usec)
141 bool JackPosixSemaphore::Allocate(
const char* name,
const char* server_name,
int value)
143 BuildName(name, server_name, fName,
sizeof(fName));
144 jack_log(
"JackPosixSemaphore::Allocate name = %s val = %ld", fName, value);
146 if ((fSemaphore = sem_open(fName, O_CREAT | O_RDWR, 0777, value)) == (sem_t*)SEM_FAILED) {
147 jack_error(
"Allocate: can't check in named semaphore name = %s err = %s", fName, strerror(errno));
155 bool JackPosixSemaphore::ConnectInput(
const char* name,
const char* server_name)
157 BuildName(name, server_name, fName,
sizeof(fName));
158 jack_log(
"JackPosixSemaphore::Connect name = %s", fName);
162 jack_log(
"Already connected name = %s", name);
166 if ((fSemaphore = sem_open(fName, O_RDWR)) == (sem_t*)SEM_FAILED) {
167 jack_error(
"Connect: can't connect named semaphore name = %s err = %s", fName, strerror(errno));
169 }
else if (fSemaphore) {
171 sem_getvalue(fSemaphore, &val);
172 jack_log(
"JackPosixSemaphore::Connect sem_getvalue %ld", val);
175 jack_error(
"Connect: fSemaphore not initialized!");
180 bool JackPosixSemaphore::Connect(
const char* name,
const char* server_name)
182 return ConnectInput(name, server_name);
185 bool JackPosixSemaphore::ConnectOutput(
const char* name,
const char* server_name)
187 return ConnectInput(name, server_name);
190 bool JackPosixSemaphore::Disconnect()
193 jack_log(
"JackPosixSemaphore::Disconnect name = %s", fName);
194 if (sem_close(fSemaphore) != 0) {
195 jack_error(
"Disconnect: can't disconnect named semaphore name = %s err = %s", fName, strerror(errno));
207 void JackPosixSemaphore::Destroy()
209 if (fSemaphore != NULL) {
210 jack_log(
"JackPosixSemaphore::Destroy name = %s", fName);
212 if (sem_close(fSemaphore) != 0) {
213 jack_error(
"Destroy: can't destroy semaphore name = %s err = %s", fName, strerror(errno));
217 jack_error(
"JackPosixSemaphore::Destroy semaphore == NULL");
SERVER_EXPORT void jack_error(const char *fmt,...)
SERVER_EXPORT void jack_log(const char *fmt,...)