/*
* Used by either ThreadReferenceImpl.c: resume() or
* VirtualMachineImpl.c: resume() to resume commandLoop().
*/
void
unblockCommandLoop(void) {
debugMonitorEnter(blockCommandLoopLock);
blockCommandLoop = JNI_FALSE;
debugMonitorNotifyAll(blockCommandLoopLock);
debugMonitorExit(blockCommandLoopLock);
}
void eventHelper_releaseEvents(void)
{
debugMonitorEnter(commandQueueLock);
holdEvents = JNI_FALSE;
debugMonitorNotifyAll(commandQueueLock);
debugMonitorExit(commandQueueLock);
}
void
eventHelper_reset(jbyte newSessionID)
{
debugMonitorEnter(commandQueueLock);
currentSessionID = newSessionID;
holdEvents = JNI_FALSE;
debugMonitorNotifyAll(commandQueueLock);
debugMonitorExit(commandQueueLock);
}
static void
signalInitComplete(void)
{
/*
* Initialization is complete
*/
LOG_MISC(("signal initialization complete"));
debugMonitorEnter(initMonitor);
initComplete = JNI_TRUE;
debugMonitorNotifyAll(initMonitor);
debugMonitorExit(initMonitor);
}
static void
completeCommand(HelperCommand *command)
{
if (command->waiting) {
debugMonitorEnter(commandCompleteLock);
command->done = JNI_TRUE;
log_debugee_location("completeCommand(): HelperCommand done waiting", NULL, NULL, 0);
debugMonitorNotifyAll(commandCompleteLock);
debugMonitorExit(commandCompleteLock);
} else {
freeCommand(command);
}
}
static void
enqueueCommand(HelperCommand *command,
jboolean wait, jboolean reportingVMDeath)
{
static jboolean vmDeathReported = JNI_FALSE;
CommandQueue *queue = &commandQueue;
jint size = commandSize(command);
command->done = JNI_FALSE;
command->waiting = wait;
command->next = NULL;
debugMonitorEnter(commandQueueLock);
while (size + currentQueueSize > maxQueueSize) {
debugMonitorWait(commandQueueLock);
}
log_debugee_location("enqueueCommand(): HelperCommand being processed", NULL, NULL, 0);
if (vmDeathReported) {
/* send no more events after VMDeath and don't wait */
wait = JNI_FALSE;
} else {
currentQueueSize += size;
if (queue->head == NULL) {
queue->head = command;
} else {
queue->tail->next = command;
}
queue->tail = command;
if (reportingVMDeath) {
vmDeathReported = JNI_TRUE;
}
}
debugMonitorNotifyAll(commandQueueLock);
debugMonitorExit(commandQueueLock);
if (wait) {
debugMonitorEnter(commandCompleteLock);
while (!command->done) {
log_debugee_location("enqueueCommand(): HelperCommand wait", NULL, NULL, 0);
debugMonitorWait(commandCompleteLock);
}
freeCommand(command);
debugMonitorExit(commandCompleteLock);
}
}
static HelperCommand *
dequeueCommand(void)
{
HelperCommand *command = NULL;
CommandQueue *queue = &commandQueue;
jint size;
debugMonitorEnter(commandQueueLock);
while (command == NULL) {
while (holdEvents || (queue->head == NULL)) {
debugMonitorWait(commandQueueLock);
}
JDI_ASSERT(queue->head);
command = queue->head;
queue->head = command->next;
if (queue->tail == command) {
queue->tail = NULL;
}
log_debugee_location("dequeueCommand(): command being dequeued", NULL, NULL, 0);
size = commandSize(command);
/*
* Immediately close out any commands enqueued from a
* previously attached debugger.
*/
if (command->sessionID != currentSessionID) {
log_debugee_location("dequeueCommand(): command session removal", NULL, NULL, 0);
completeCommand(command);
command = NULL;
}
/*
* There's room in the queue for more.
*/
currentQueueSize -= size;
debugMonitorNotifyAll(commandQueueLock);
}
debugMonitorExit(commandQueueLock);
return command;
}
static void
connectionInitiated(jdwpTransportEnv *t)
{
jint isValid = JNI_FALSE;
debugMonitorEnter(listenerLock);
/*
* Don't allow a connection until initialization is complete
*/
debugInit_waitInitComplete();
/* Are we the first transport to get a connection? */
if (transport == NULL) {
transport = t;
isValid = JNI_TRUE;
} else {
if (transport == t) {
/* connected with the same transport as before */
isValid = JNI_TRUE;
} else {
/*
* Another transport got a connection - multiple transports
* not fully supported yet so shouldn't get here.
*/
(*t)->Close(t);
JDI_ASSERT(JNI_FALSE);
}
}
if (isValid) {
debugMonitorNotifyAll(listenerLock);
}
debugMonitorExit(listenerLock);
if (isValid) {
debugLoop_run();
}
}