/**
* Find a first thread that can be unblocked for a given handle and signal type.
*
* @param handle Platform-specific handle.
* @param signalType Enumerated signal type.
*
* @return JVMSPI_ThreadID Java thread id than can be unblocked
* 0 if no matching thread can be found
*
*/
static JVMSPI_ThreadID
jsr120_cbs_get_blocked_thread_from_handle(long handle, jint waitingFor) {
JVMSPI_BlockedThreadInfo *blocked_threads;
int n;
int i;
blocked_threads = SNI_GetBlockedThreads(&n);
for (i = 0; i < n; i++) {
MidpReentryData *p =
(MidpReentryData*)(blocked_threads[i].reentry_data);
if (p != NULL) {
/* wait policy: 1. threads waiting for network reads
2. threads waiting for network writes
3. threads waiting for network push event*/
if ((waitingFor == WMA_CBS_READ_SIGNAL) &&
(waitingFor == (int)p->waitingFor) &&
(p->descriptor == handle)) {
return blocked_threads[i].thread_id;
}
if ((waitingFor == PUSH_SIGNAL) &&
(waitingFor == (int)p->waitingFor) &&
(findPushBlockedHandle(handle) != 0)) {
return blocked_threads[i].thread_id;
}
}
}
return 0;
}
void FOX_FASTCALL(midp_check_events)(jlonglong timeout) {
#else
void midp_check_events(JVMSPI_BlockedThreadInfo *blocked_threads,
int blocked_threads_count,
jlong timeout) {
if (midp_waitWhileSuspended()) {
/* System has been requested to resume. Returning control to VM
* to perform java-side resume routines. Timeout may be too long
* here or even -1, thus do not check other events this time.
*/
return;
}
#endif
newSignal.waitingFor = NO_SIGNAL;
newSignal.pResult = ADDR_ZERO;
MIDP_EVENT_INITIALIZE(newMidpEvent);
checkForSystemSignal(&newSignal, &newMidpEvent, timeout);
switch (newSignal.waitingFor) {
#if ENABLE_JAVA_DEBUGGER
case VM_DEBUG_SIGNAL:
if (midp_isDebuggerActive()) {
JVM_ProcessDebuggerCmds();
}
break;
#endif // ENABLE_JAVA_DEBUGGER
case AMS_SIGNAL:
midpStoreEventAndSignalAms(newMidpEvent);
break;
case UI_SIGNAL:
midpStoreEventAndSignalForeground(newMidpEvent);
break;
case NETWORK_READ_SIGNAL:
#ifdef FEATURE_PHONEME
FASTIVA_DBREAK();
#else
if (eventUnblockJavaThread(blocked_threads,
blocked_threads_count, newSignal.waitingFor,
newSignal.descriptor,
newSignal.status))
/* Processing is done in eventUnblockJavaThread. */;
else if (findPushBlockedHandle(newSignal.descriptor) != 0) {
/* The push system is waiting for a read on this descriptor */
midp_thread_signal_list(blocked_threads, blocked_threads_count,
PUSH_SIGNAL, 0, 0);
}
#endif
#if (ENABLE_JSR_120 || ENABLE_JSR_205)
else
jsr120_check_signal(newSignal.waitingFor, newSignal.descriptor);
#endif
break;
case HOST_NAME_LOOKUP_SIGNAL:
case NETWORK_WRITE_SIGNAL:
#if (ENABLE_JSR_120 || ENABLE_JSR_205)
if (!jsr120_check_signal(newSignal.waitingFor, newSignal.descriptor))
#endif
#ifdef FEATURE_PHONEME
FASTIVA_DBREAK();
#else
midp_thread_signal_list(blocked_threads, blocked_threads_count,
newSignal.waitingFor, newSignal.descriptor,
newSignal.status);
#endif
break;
case NETWORK_EXCEPTION_SIGNAL:
#ifdef FEATURE_PHONEME
FASTIVA_DBREAK();
#else
/* Find both the read and write threads and signal the status. */
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
NETWORK_READ_SIGNAL, newSignal.descriptor,
newSignal.status);
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
NETWORK_WRITE_SIGNAL, newSignal.descriptor,
newSignal.status);
#endif
return;
case PUSH_ALARM_SIGNAL:
#ifdef FEATURE_PHONEME
FASTIVA_DBREAK();
#else
if (findPushTimerBlockedHandle(newSignal.descriptor) != 0) {
/* The push system is waiting for this alarm */
midp_thread_signal_list(blocked_threads,
blocked_threads_count, PUSH_SIGNAL, 0, 0);
}
#endif
break;
#if (ENABLE_JSR_135 || ENABLE_JSR_234)
case MEDIA_EVENT_SIGNAL:
StoreMIDPEventInVmThread(newMidpEvent, newMidpEvent.MM_ISOLATE);
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
MEDIA_EVENT_SIGNAL, newSignal.descriptor,
newSignal.status);
break;
case MEDIA_SNAPSHOT_SIGNAL:
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
MEDIA_SNAPSHOT_SIGNAL, newSignal.descriptor,
newSignal.status);
break;
#endif
#ifdef ENABLE_JSR_179
case JSR179_LOCATION_SIGNAL:
midp_thread_signal_list(blocked_threads,
blocked_threads_count, JSR179_LOCATION_SIGNAL, newSignal.descriptor, newSignal.status);
break;
#endif /* ENABLE_JSR_179 */
#if (ENABLE_JSR_120 || ENABLE_JSR_205)
case WMA_SMS_READ_SIGNAL:
case WMA_CBS_READ_SIGNAL:
case WMA_MMS_READ_SIGNAL:
case WMA_SMS_WRITE_SIGNAL:
case WMA_MMS_WRITE_SIGNAL:
jsr120_check_signal(newSignal.waitingFor, newSignal.descriptor);
break;
#endif
#ifdef ENABLE_JSR_177
case CARD_READER_DATA_SIGNAL:
midp_thread_signal_list(blocked_threads, blocked_threads_count,
newSignal.waitingFor, newSignal.descriptor,
newSignal.status);
break;
#endif /* ENABLE_JSR_177 */
default:
break;
} /* switch */
}
/**
* Runs the VM in either master or slave mode depending on the
* platform. It does not return until the VM is finished. In slave mode
* it will contain a system event loop.
*
* @param classPath string containing the class path
* @param mainClass string containing the main class for the VM to run.
* @param argc the number of arguments to pass to the main method
* @param argv the arguments to pass to the main method
*
* @return exit status of the VM
*/
#if 0
int midpRunVm(JvmPathChar* classPath,
char* mainClass,
int argc,
char** argv) {
/* Master mode does not need VM time slice requests. */
midp_thread_set_timeslice_proc(ADDR_ZERO);
return JVM_Start(classPath, mainClass, argc, argv);
}
/*
* This function is called by the VM periodically. It has to check if
* any of the blocked threads are ready for execution, and call
* SNI_UnblockThread() on those threads that are ready.
*
* Values for the <timeout> paramater:
* >0 = Block until an event happens, or until <timeout> milliseconds
* has elapsed.
* 0 = Check the events sources but do not block. Return to the
* caller immediately regardless of the status of the event sources.
* -1 = Do not timeout. Block until an event happens.
*/
void midp_check_events(JVMSPI_BlockedThreadInfo *blocked_threads,
int blocked_threads_count,
jlong timeout) {
if (midp_waitWhileSuspended()) {
/* System has been requested to resume. Returning control to VM
* to perform java-side resume routines. Timeout may be too long
* here or even -1, thus do not check other events this time.
*/
return;
}
newSignal.waitingFor = 0;
newSignal.pResult = NULL;
MIDP_EVENT_INITIALIZE(newMidpEvent);
checkForSystemSignal(&newSignal, &newMidpEvent, timeout);
switch (newSignal.waitingFor) {
#if ENABLE_JAVA_DEBUGGER
case VM_DEBUG_SIGNAL:
if (midp_isDebuggerActive()) {
JVM_ProcessDebuggerCmds();
}
break;
#endif // ENABLE_JAVA_DEBUGGER
case AMS_SIGNAL:
midpStoreEventAndSignalAms(newMidpEvent);
break;
case UI_SIGNAL:
midpStoreEventAndSignalForeground(newMidpEvent);
break;
case NETWORK_READ_SIGNAL:
if (eventUnblockJavaThread(blocked_threads,
blocked_threads_count, newSignal.waitingFor,
newSignal.descriptor,
newSignal.status))
/* Processing is done in eventUnblockJavaThread. */;
else if (findPushBlockedHandle(newSignal.descriptor) != 0) {
/* The push system is waiting for a read on this descriptor */
midp_thread_signal_list(blocked_threads, blocked_threads_count,
PUSH_SIGNAL, 0, 0);
}
#if (ENABLE_JSR_120 || ENABLE_JSR_205)
else
jsr120_check_signal(newSignal.waitingFor, newSignal.descriptor);
#endif
break;
case HOST_NAME_LOOKUP_SIGNAL:
case NETWORK_WRITE_SIGNAL:
#if (ENABLE_JSR_120 || ENABLE_JSR_205)
if (!jsr120_check_signal(newSignal.waitingFor, newSignal.descriptor))
#endif
midp_thread_signal_list(blocked_threads, blocked_threads_count,
newSignal.waitingFor, newSignal.descriptor,
newSignal.status);
break;
case NETWORK_EXCEPTION_SIGNAL:
/* Find both the read and write threads and signal the status. */
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
NETWORK_READ_SIGNAL, newSignal.descriptor,
newSignal.status);
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
NETWORK_WRITE_SIGNAL, newSignal.descriptor,
newSignal.status);
return;
case PUSH_ALARM_SIGNAL:
if (findPushTimerBlockedHandle(newSignal.descriptor) != 0) {
/* The push system is waiting for this alarm */
midp_thread_signal_list(blocked_threads,
blocked_threads_count, PUSH_SIGNAL, 0, 0);
}
break;
#if (ENABLE_JSR_135 || ENABLE_JSR_234)
case MEDIA_EVENT_SIGNAL:
StoreMIDPEventInVmThread(newMidpEvent, newMidpEvent.MM_ISOLATE);
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
MEDIA_EVENT_SIGNAL, newSignal.descriptor,
newSignal.status);
break;
case MEDIA_SNAPSHOT_SIGNAL:
eventUnblockJavaThread(blocked_threads, blocked_threads_count,
MEDIA_SNAPSHOT_SIGNAL, newSignal.descriptor,
newSignal.status);
break;
#endif
#ifdef ENABLE_JSR_179
case JSR179_LOCATION_SIGNAL:
midp_thread_signal_list(blocked_threads,
blocked_threads_count, JSR179_LOCATION_SIGNAL, newSignal.descriptor, newSignal.status);
break;
#endif /* ENABLE_JSR_179 */
#if (ENABLE_JSR_120 || ENABLE_JSR_205)
case WMA_SMS_READ_SIGNAL:
case WMA_CBS_READ_SIGNAL:
case WMA_MMS_READ_SIGNAL:
case WMA_SMS_WRITE_SIGNAL:
case WMA_MMS_WRITE_SIGNAL:
jsr120_check_signal(newSignal.waitingFor, newSignal.descriptor);
break;
#endif
#ifdef ENABLE_JSR_177
case CARD_READER_DATA_SIGNAL:
midp_thread_signal_list(blocked_threads, blocked_threads_count,
newSignal.waitingFor, newSignal.descriptor,
newSignal.status);
break;
#endif /* ENABLE_JSR_177 */
default:
break;
} /* switch */
}
