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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /trunk/kernel/generic/src/ipc/kbox.c @ 3495

  → /trunk/kernel/generic/src/ipc/kbox.c @ 3496

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 3495 → Rev 3496

/trunk/kernel/generic/src/ipc/kbox.c
91,13 → 91,75
spinlock_unlock(&TASK->kernel_box.lock);
}
/** Handle hangup message in kbox.
*
* @param call The IPC_M_PHONE_HUNGUP call structure.
* @param last Output, the function stores @c true here if
* this was the last phone, @c false otherwise.
**/
static void kbox_proc_phone_hungup(call_t *call, bool *last)
{
ipl_t ipl;
LOG("kbox_proc_phone_hungup()\n");
/* Was it our debugger, who hung up? */
if (call->sender == TASK->udebug.debugger) {
/* Terminate debugging session (if any) */
LOG("kbox: terminate debug session\n");
ipl = interrupts_disable();
spinlock_lock(&TASK->lock);
udebug_task_cleanup(TASK);
spinlock_unlock(&TASK->lock);
interrupts_restore(ipl);
} else {
LOG("kbox: was not debugger\n");
}
LOG("kbox: continue with hangup message\n");
IPC_SET_RETVAL(call->data, 0);
ipc_answer(&TASK->kernel_box, call);
ipl = interrupts_disable();
spinlock_lock(&TASK->lock);
spinlock_lock(&TASK->answerbox.lock);
if (list_empty(&TASK->answerbox.connected_phones)) {
/*
* Last phone has been disconnected. Detach this thread so it
* gets freed and signal to the caller.
*/
/* Only detach kbox thread unless already terminating. */
mutex_lock(&TASK->kb_cleanup_lock);
if (&TASK->kb_finished == false) {
/* Detach kbox thread so it gets freed from memory. */
thread_detach(TASK->kb_thread);
TASK->kb_thread = NULL;
}
mutex_unlock(&TASK->kb_cleanup_lock);
LOG("phone list is empty\n");
*last = true;
} else {
*last = false;
}
spinlock_unlock(&TASK->answerbox.lock);
spinlock_unlock(&TASK->lock);
interrupts_restore(ipl);
}
/** Implementing function for the kbox thread.
*
* This function listens for debug requests. It terminates
* when all phones are disconnected from the kbox.
*
* @param arg Ignored.
*/
static void kbox_thread_proc(void *arg)
{
call_t *call;
int method;
bool done;
ipl_t ipl;
(void)arg;
LOG("kbox_thread_proc()\n");
107,58 → 169,28
call = ipc_wait_for_call(&TASK->kernel_box, SYNCH_NO_TIMEOUT,
SYNCH_FLAGS_NONE);
if (call != NULL) {
method = IPC_GET_METHOD(call->data);
if (call == NULL)
continue; /* Try again. */
if (method == IPC_M_DEBUG_ALL) {
udebug_call_receive(call);
}
switch (IPC_GET_METHOD(call->data)) {
if (method == IPC_M_PHONE_HUNGUP) {
LOG("kbox: handle hangup message\n");
case IPC_M_DEBUG_ALL:
/* Handle debug call. */
udebug_call_receive(call);
break;
/* Was it our debugger, who hung up? */
if (call->sender == TASK->udebug.debugger) {
/* Terminate debugging session (if any) */
LOG("kbox: terminate debug session\n");
ipl = interrupts_disable();
spinlock_lock(&TASK->lock);
udebug_task_cleanup(TASK);
spinlock_unlock(&TASK->lock);
interrupts_restore(ipl);
} else {
LOG("kbox: was not debugger\n");
}
case IPC_M_PHONE_HUNGUP:
/*
* Process the hangup call. If this was the last
* phone, done will be set to true and the
* while loop will terminate.
*/
kbox_proc_phone_hungup(call, &done);
break;
LOG("kbox: continue with hangup message\n");
IPC_SET_RETVAL(call->data, 0);
ipc_answer(&TASK->kernel_box, call);
ipl = interrupts_disable();
spinlock_lock(&TASK->lock);
spinlock_lock(&TASK->answerbox.lock);
if (list_empty(&TASK->answerbox.connected_phones)) {
/*
* Last phone has been disconnected.
* Detach this thread so it gets
* freed and terminate.
*/
/* Only need to detach thread unless already terminating. */
mutex_lock(&TASK->kb_cleanup_lock);
if (&TASK->kb_finished == false) {
/* Detach thread so it gets freed. */
thread_detach(TASK->kb_thread);
TASK->kb_thread = NULL;
}
mutex_unlock(&TASK->kb_cleanup_lock);
done = true;
LOG("phone list is empty\n");
}
spinlock_unlock(&TASK->answerbox.lock);
spinlock_unlock(&TASK->lock);
interrupts_restore(ipl);
}
default:
/* Ignore */
break;
}
}