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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/trunk/generic/src/ipc/ipcrsc.c @ 1087

  → /kernel/trunk/generic/src/ipc/ipcrsc.c @ 1088

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1087 → Rev 1088

/kernel/trunk/generic/src/ipc/ipcrsc.c
70,23 → 70,37
* IPC_M_PHONE_HUNGUP call from the phone that hung up. When all async
* calls are answered, the phone is deallocated.
*
* *** The answerbox hangs up (ipc_answer(ESLAM))
* - The phone is disconnected. IPC_M_ANSWERBOX_HUNGUP notification
* is sent to source task, the calling process is expected to
* *** The answerbox hangs up (ipc_answer(EHANGUP))
* - The phone is disconnected. EHANGUP response code is sent
* to the calling process. All new calls through this phone
* get a EHUNGUP error code, the task is expected to
* send an sys_ipc_hangup after cleaning up it's internal structures.
*
* Call forwarding
*
* The call can be forwarded, so that the answer to call is passed directly
* to the original sender. However, this poses special problems regarding
* routing of hangup messages.
*
* sys_ipc_hangup -> IPC_M_PHONE_HUNGUP
* - this message CANNOT be forwarded
*
* EHANGUP during forward
* - The *forwarding* phone will be closed, EFORWARD is sent to receiver.
*
* EHANGUP, ENOENT during forward
* - EFORWARD is sent to the receiver, ipc_forward returns error code EFORWARD
*
* Cleanup strategy
*
* 1) Disconnect all our phones ('sys_ipc_hangup')
* 1) Disconnect all our phones ('ipc_phone_hangup').
*
* 2) Disconnect all phones connected to answerbox.
* * Send message 'PHONE_DISCONNECTED' to the target application
* - Once all phones are disconnected, no further calls can arrive
*
* 3) Answer all messages in 'calls' and 'dispatched_calls' queues with
* appropriate error code.
* appropriate error code (EHANGUP, EFORWARD).
*
* 4) Wait for all async answers to arrive
* 4) Wait for all async answers to arrive.
*
*/
116,8 → 130,8
spinlock_lock(&TASK->lock);
for (i=0; i < IPC_MAX_PHONES; i++) {
if (!TASK->phones[i].busy && !atomic_get(&TASK->phones[i].active_calls)) {
TASK->phones[i].busy = 1;
if (TASK->phones[i].busy==IPC_BUSY_FREE && !atomic_get(&TASK->phones[i].active_calls)) {
TASK->phones[i].busy = IPC_BUSY_CONNECTING;
break;
}
}
136,10 → 150,10
{
spinlock_lock(&TASK->lock);
ASSERT(TASK->phones[phoneid].busy);
ASSERT(TASK->phones[phoneid].busy == IPC_BUSY_CONNECTING);
ASSERT(! TASK->phones[phoneid].callee);
TASK->phones[phoneid].busy = 0;
TASK->phones[phoneid].busy = IPC_BUSY_FREE;
spinlock_unlock(&TASK->lock);
}
155,6 → 169,6
{
phone_t *phone = &TASK->phones[phoneid];
ASSERT(phone->busy);
ASSERT(phone->busy == IPC_BUSY_CONNECTING);
ipc_phone_connect(phone, box);
}