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Ignore whitespace Rev 1567 → Rev 1568

/kernel/trunk/generic/src/ipc/ipc.c
111,7 → 111,7
spinlock_lock(&phone->lock);
 
ASSERT(!phone->callee);
phone->busy = IPC_BUSY_CONNECTED;
phone->state = IPC_PHONE_CONNECTED;
phone->callee = box;
 
spinlock_lock(&box->lock);
127,7 → 127,7
{
spinlock_initialize(&phone->lock, "phone_lock");
phone->callee = NULL;
phone->busy = IPC_BUSY_FREE;
phone->state = IPC_PHONE_FREE;
atomic_set(&phone->active_calls, 0);
}
 
184,11 → 184,7
{
call->data.phone = phone;
atomic_inc(&phone->active_calls);
if (phone->busy == IPC_BUSY_CONNECTED)
IPC_SET_RETVAL(call->data, EHANGUP);
else
IPC_SET_RETVAL(call->data, ENOENT);
 
IPC_SET_RETVAL(call->data, err);
_ipc_answer_free_call(call);
}
 
216,23 → 212,20
answerbox_t *box;
 
spinlock_lock(&phone->lock);
 
box = phone->callee;
if (!box) {
/* Trying to send over disconnected phone */
if (phone->state != IPC_PHONE_CONNECTED) {
spinlock_unlock(&phone->lock);
if (call->flags & IPC_CALL_FORWARDED) {
IPC_SET_RETVAL(call->data, EFORWARD);
_ipc_answer_free_call(call);
} else { /* Simulate sending back a message */
if (phone->busy == IPC_BUSY_CONNECTED)
} else {
if (phone->state == IPC_PHONE_HUNGUP)
ipc_backsend_err(phone, call, EHANGUP);
else
ipc_backsend_err(phone, call, ENOENT);
}
 
return ENOENT;
}
box = phone->callee;
_ipc_call(phone, box, call);
spinlock_unlock(&phone->lock);
241,40 → 234,51
 
/** Disconnect phone from answerbox
*
* It is allowed to call disconnect on already disconnected phone
* This call leaves the phone in HUNGUP state. The change to 'free' is done
* lazily later.
*
* @param phone Phone to be hung up
* @param aggressive If false, the phone is only marked hungup, and all
* messages are allowed to complete.
* If true, all messages in all queues are discarded. There
* may still be some messages that will be 'in-transit' on
* other CPU.
*
* @return 0 - phone disconnected, -1 - the phone was already disconnected
*/
int ipc_phone_hangup(phone_t *phone)
int ipc_phone_hangup(phone_t *phone, int aggressive)
{
answerbox_t *box;
call_t *call;
spinlock_lock(&phone->lock);
if (phone->state == IPC_PHONE_FREE || phone->state ==IPC_PHONE_HUNGUP \
|| phone->state == IPC_PHONE_CONNECTING) {
spinlock_unlock(&phone->lock);
return -1;
}
box = phone->callee;
if (!box) {
if (phone->busy == IPC_BUSY_CONNECTING) {
spinlock_unlock(&phone->lock);
return -1;
if (phone->state != IPC_PHONE_SLAMMED) {
/* Remove myself from answerbox */
spinlock_lock(&box->lock);
list_remove(&phone->list);
spinlock_unlock(&box->lock);
 
if (phone->state != IPC_PHONE_SLAMMED) {
call = ipc_call_alloc(0);
IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP);
call->flags |= IPC_CALL_DISCARD_ANSWER;
_ipc_call(phone, box, call);
}
/* Already disconnected phone */
phone->busy = IPC_BUSY_FREE;
spinlock_unlock(&phone->lock);
return 0;
}
 
spinlock_lock(&box->lock);
list_remove(&phone->list);
phone->callee = NULL;
spinlock_unlock(&box->lock);
if (aggressive && atomic_get(&phone->active_calls) > 0) {
/* TODO: Do some stuff be VERY aggressive */
}
 
call = ipc_call_alloc(0);
IPC_SET_METHOD(call->data, IPC_M_PHONE_HUNGUP);
call->flags |= IPC_CALL_DISCARD_ANSWER;
_ipc_call(phone, box, call);
 
phone->busy = IPC_BUSY_FREE;
 
phone->callee = 0;
phone->state = IPC_PHONE_HUNGUP;
spinlock_unlock(&phone->lock);
 
return 0;
380,7 → 384,7
/* Disconnect all our phones ('ipc_phone_hangup') */
for (i=0;i < IPC_MAX_PHONES; i++)
ipc_phone_hangup(&task->phones[i]);
ipc_phone_hangup(&task->phones[i], 1);
 
/* Disconnect all connected irqs */
ipc_irq_cleanup(&task->answerbox);
398,7 → 402,8
}
/* Disconnect phone */
phone->callee = NULL;
ASSERT(phone->state == IPC_PHONE_CONNECTED);
phone->state = IPC_PHONE_SLAMMED;
list_remove(&phone->list);
 
spinlock_unlock(&phone->lock);
411,7 → 416,21
spinlock_unlock(&task->answerbox.lock);
/* Wait for all async answers to arrive */
while (atomic_get(&task->active_calls)) {
while (1) {
/* Go through all phones, until all are FREE... */
/* Locking not needed, no one else should modify
* it, when we are in cleanup */
for (i=0;i < IPC_MAX_PHONES; i++) {
if (task->phones[i].state == IPC_PHONE_HUNGUP && \
atomic_get(&task->phones[i].active_calls) == 0)
task->phones[i].state = IPC_PHONE_FREE;
if (task->phones[i].state != IPC_PHONE_FREE)
break;
}
/* Voila, got into cleanup */
if (i == IPC_MAX_PHONES)
break;
call = ipc_wait_for_call(&task->answerbox, SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE);
ASSERT((call->flags & IPC_CALL_ANSWERED) || (call->flags & IPC_CALL_NOTIF));
ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));