/**
* The function is a thread loop that waits on SIP message queue
* visible for the external components (sip_msgq). The thread is used
* to avoid having the main task loop from having to set a small time
* waiting on select() to poll inter-thread messages. The small waiting
* time on select() to poll internal messages queue increases the
* unnecessary of waking up when system is idle. On the platform that
* power conservative is critical such as handheld phone, waking up
* periodically is not good for battery life.
*
* This thread splits the message queue waiting function from the
* main thread waiting on select(). This thread simply listens on the
* internal message queue and signal to the main thread via IPC socket
* or local socket trigger. Therefore the main thread can uniformly
* process internal message event and the network event via select().
* The small internal poll time on select() can be
* avoided.
*
* @param[in] arg - pointer to SIP main thread's message queue.
*
* @return None.
*
* @pre (arg != NULL)
*/
void sip_platform_task_msgqwait (void *arg)
{
const char *fname = "sip_platform_task_msgqwait";
cprMsgQueue_t *msgq = (cprMsgQueue_t *)arg;
unsigned int wait_main_thread = 0;
phn_syshdr_t *syshdr;
void *msg;
uint8_t num_messages = 0;
uint8_t response = 0;
boolean quit_thread = FALSE;
char tempdir[sizeof(sip_serv_sock_addr.sun_path)];
if (msgq == NULL) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"task msgq is null, exiting", fname);
return;
}
if (platThreadInit("SIP IPCQ task") != 0) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"failed to attach thread to JVM", fname);
return;
}
/*
* Wait for SIP main thread ready for IPC connection.
*/
while (!main_thread_ready) {
/* Pause for other threads to run while waiting */
cprSleep(SIP_PAUSE_WAIT_IPC_LISTEN_READY_TIME);
wait_main_thread++;
if (wait_main_thread > SIP_MAX_WAIT_FOR_IPC_LISTEN_READY) {
/* Exceed the number of wait time */
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"timeout waiting for listening IPC"
" socket ready, exiting\n", fname);
return;
}
}
/*
* Adjust relative priority of SIP thread.
*/
(void) cprAdjustRelativeThreadPriority(SIP_THREAD_RELATIVE_PRIORITY);
/*
* The main thread is ready. set global client socket address
* so that the server can send back response.
*/
sip_get_sock_dir(tempdir, sizeof(tempdir), SIP_MSG_CLNT_SUFFIX);
cpr_set_sockun_addr(&sip_clnt_sock_addr, tempdir, 0);
sip_ipc_clnt_socket = sip_create_IPC_sock(sip_clnt_sock_addr.sun_path);
if (sip_ipc_clnt_socket == INVALID_SOCKET) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"sip_create_IPC_sock() failed,"
" exiting\n", fname);
return;
}
while (quit_thread == FALSE) {
msg = cprGetMessage(msgq, TRUE, (void **) &syshdr);
while (msg != NULL) {
/*
* There is a message to be forwarded to the main SIP
* thread for processing.
*/
sip_int_msgq_buf[num_messages].msg = msg;
sip_int_msgq_buf[num_messages].syshdr = syshdr;
num_messages++;
switch (syshdr->Cmd) {
case THREAD_UNLOAD:
thread_ended(THREADMON_MSGQ);
quit_thread = TRUE;
break;
default:
break;
}
if (num_messages == MAX_SIP_MESSAGES) {
/*
* Limit the number of messages passed to the main SIP
* thread to MAX_SIP_MESSAGES since SIP main thread only
* process messages up to MAX_SIP_MESSAGES at a time.
*/
break;
}
/*
* Check to see if there is more message on the queue
* before sending IPC message trigger to the main SIP
* thread. This is to minimize the overhead of the
* the main SIP thread in processing select().
*/
msg = cprGetMessage(msgq, 0, (void **) &syshdr);
}
if (num_messages) {
CCSIP_DEBUG_TASK(DEB_F_PREFIX"%d msg available on msgq", DEB_F_PREFIX_ARGS(SIP_MSG_QUE, fname), num_messages);
/*
* There are some number of messages sent to the main thread,
* trigger the main SIP thread via IPC to process the message.
*/
if (cprSendTo(sip_ipc_clnt_socket, (void *)&num_messages,
sizeof(num_messages), 0,
(cpr_sockaddr_t *)&sip_serv_sock_addr,
cpr_sun_len(sip_serv_sock_addr)) < 0) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"send IPC failed errno=%d", fname, cpr_errno);
}
if (FALSE == quit_thread) {
/*
* Wait for main thread to signal us to get more message.
*/
if (cprRecvFrom(sip_ipc_clnt_socket, &response,
sizeof(response), 0, NULL, NULL) < 0) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"read IPC failed:"
" errno=%d\n", fname, cpr_errno);
}
num_messages = 0;
}
}
}
cprCloseSocket(sip_ipc_clnt_socket);
unlink(sip_clnt_sock_addr.sun_path); // removes tmp file
}
/**
*
* sip_platform_task_loop
*
* Run the SIP task
*
* Parameters: arg - SIP message queue
*
* Return Value: None
*
*/
void
sip_platform_task_loop (void *arg)
{
static const char *fname = "sip_platform_task_loop";
int pending_operations;
uint16_t i;
fd_set sip_read_fds;
fd_set sip_write_fds;
sip_tcp_conn_t *entry;
sip_msgq = (cprMsgQueue_t) arg;
if (!sip_msgq) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"sip_msgq is null, exiting", fname);
return;
}
sip.msgQueue = sip_msgq;
sip_platform_task_init();
/*
* Initialize the SIP task
*/
SIPTaskInit();
if (platThreadInit("SIPStack Task") != 0) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"failed to attach thread to JVM", fname);
return;
}
/*
* Adjust relative priority of SIP thread.
*/
(void) cprAdjustRelativeThreadPriority(SIP_THREAD_RELATIVE_PRIORITY);
/*
* Setup IPC socket addresses for main thread (server)
*/
{
char stmpdir[sizeof(sip_serv_sock_addr.sun_path)];
sip_get_sock_dir(stmpdir, sizeof(stmpdir), SIP_MSG_SERV_SUFFIX);
cpr_set_sockun_addr(&sip_serv_sock_addr, stmpdir, 0);
}
/*
* Create IPC between the message queue thread and this main
* thread.
*/
sip_ipc_serv_socket = sip_create_IPC_sock(sip_serv_sock_addr.sun_path);
if (sip_ipc_serv_socket == INVALID_SOCKET) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"sip_create_IPC_sock() failed:"
" errno=%d\n", fname, cpr_errno);
return;
}
/*
* On Win32 platform, the random seed is stored per thread; therefore,
* each thread needs to seed the random number. It is recommended by
* MS to do the following to ensure randomness across application
* restarts.
*/
cpr_srand((unsigned int)time(NULL));
/*
* Set read IPC socket
*/
sip_platform_task_set_read_socket(sip_ipc_serv_socket);
/*
* Let the message queue waiting thread know that the main
* thread is ready.
*/
main_thread_ready = TRUE;
/*
* Main Event Loop
* - Forever-loop exits in sip_process_int_msg()::THREAD_UNLOAD
*/
while (TRUE) {
/*
* Wait on events or timeout
*/
sip_read_fds = read_fds;
// start off by init to zero
FD_ZERO(&sip_write_fds);
// now look for sockets where data has been queued up
for (i = 0; i < MAX_CONNECTIONS; i++) {
entry = sip_tcp_conn_tab + i;
if (-1 != entry->fd && entry->sendQueue && sll_count(entry->sendQueue)) {
FD_SET(entry->fd, &sip_write_fds);
}
}
pending_operations = cprSelect((nfds + 1),
&sip_read_fds,
&sip_write_fds,
NULL, NULL);
if (pending_operations == SOCKET_ERROR) {
CCSIP_DEBUG_ERROR(SIP_F_PREFIX"cprSelect() failed: errno=%d."
" Recover by initiating sip restart\n",
fname, cpr_errno);
/*
* If we have come here, then either read socket related to
* sip_ipc_serv_socket has got corrupted, or one of the write
* socket related to cucm tcp/tls connection.
* We will recover, by first clearing all fds, then re-establishing
* the connection with sip-msgq by listening on
* sip_ipc_serv_socket.
*/
sip_platform_task_init(); /* this clear FDs */
sip_platform_task_set_read_socket(sip_ipc_serv_socket);
/*
* Since all sockets fds have been cleared above, we can not anyway
* send or receive msg from cucm. So, there is no point
* trying to send registration cancel msg to cucm. Also, a
* call may be active, and in that case we do not want to
* un-register. So, by setting sip_reg_all_failed to true, we
* make sure that no registration cancelation attempt is made.
*/
sip_reg_all_failed = TRUE;
platform_reset_req(DEVICE_RESTART);
continue;
} else if (pending_operations) {
/*
* Listen socket is set only if UDP transport has been
* configured. So see if the select return was for read
* on the listen socket.
*/
if ((listen_socket != INVALID_SOCKET) &&
(sip.taskInited == TRUE) &&
FD_ISSET(listen_socket, &sip_read_fds)) {
sip_platform_udp_read_socket(listen_socket);
pending_operations--;
}
/*
* Check IPC for internal message queue
*/
if (FD_ISSET(sip_ipc_serv_socket, &sip_read_fds)) {
/* read the message to flush the buffer */
sip_process_int_msg();
pending_operations--;
}
/*
* Check all sockets for stuff to do
*/
for (i = 0; ((i < MAX_SIP_CONNECTIONS) &&
(pending_operations > 0)); i++) {
if ((sip_conn.read[i] != INVALID_SOCKET) &&
FD_ISSET(sip_conn.read[i], &sip_read_fds)) {
/*
* Assume tcp
*/
sip_tcp_read_socket(sip_conn.read[i]);
pending_operations--;
}
if ((sip_conn.write[i] != INVALID_SOCKET) &&
FD_ISSET(sip_conn.write[i], &sip_write_fds)) {
int connid;
connid = sip_tcp_fd_to_connid(sip_conn.write[i]);
if (connid >= 0) {
sip_tcp_resend(connid);
}
pending_operations--;
}
}
}
}
}
void
GSMTask (void *arg)
{
static const char fname[] = "GSMTask";
void *msg;
phn_syshdr_t *syshdr;
boolean release_msg = TRUE;
/*
* Get the GSM message queue handle
* A hack until the tasks in irx are
* CPRized.
*/
gsm_msg_queue = (cprMsgQueue_t) arg;
if (!gsm_msg_queue) {
GSM_ERR_MSG(GSM_F_PREFIX"invalid input, exiting\n", fname);
return;
}
if (platThreadInit("GSMTask") != 0) {
return;
}
/*
* Adjust relative priority of GSM thread.
*/
(void) cprAdjustRelativeThreadPriority(GSM_THREAD_RELATIVE_PRIORITY);
/*
* Initialize all the GSM modules
*/
lsm_init();
fsm_init();
fim_init();
gsm_init();
dcsm_init();
cc_init();
fsmutil_init_shown_calls_ci_map();
/*
* On Win32 platform, the random seed is stored per thread; therefore,
* each thread needs to seed the random number. It is recommended by
* MS to do the following to ensure randomness across application
* restarts.
*/
cpr_srand((unsigned int)time(NULL));
/*
* Cache random numbers for SRTP keys
*/
gsmsdp_cache_crypto_keys();
while (1) {
release_msg = TRUE;
msg = cprGetMessage(gsm_msg_queue, TRUE, (void **) &syshdr);
if (msg) {
switch (syshdr->Cmd) {
case TIMER_EXPIRATION:
gsm_process_timer_expiration(msg);
break;
case GSM_SIP:
case GSM_GSM:
release_msg = gsm_process_msg(syshdr->Cmd, msg);
break;
case DP_MSG_INIT_DIALING:
case DP_MSG_DIGIT_STR:
case DP_MSG_STORE_DIGIT:
case DP_MSG_DIGIT:
case DP_MSG_DIAL_IMMEDIATE:
case DP_MSG_REDIAL:
case DP_MSG_ONHOOK:
case DP_MSG_OFFHOOK:
case DP_MSG_UPDATE:
case DP_MSG_DIGIT_TIMER:
case DP_MSG_CANCEL_OFFHOOK_TIMER:
dp_process_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_B2BCNF_SUBSCRIBE_RESP:
case SUB_MSG_B2BCNF_NOTIFY:
case SUB_MSG_B2BCNF_TERMINATE:
sub_process_b2bcnf_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_FEATURE_SUBSCRIBE_RESP:
case SUB_MSG_FEATURE_NOTIFY:
case SUB_MSG_FEATURE_TERMINATE:
sub_process_feature_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_KPML_SUBSCRIBE:
case SUB_MSG_KPML_TERMINATE:
case SUB_MSG_KPML_NOTIFY_ACK:
case SUB_MSG_KPML_SUBSCRIBE_TIMER:
case SUB_MSG_KPML_DIGIT_TIMER:
kpml_process_msg(syshdr->Cmd, msg);
break;
case REG_MGR_STATE_CHANGE:
gsm_reset();
break;
case THREAD_UNLOAD:
destroy_gsm_thread();
break;
default:
GSM_ERR_MSG(GSM_F_PREFIX"Unknown message\n", fname);
break;
}
cprReleaseSysHeader(syshdr);
if (release_msg == TRUE) {
cprReleaseBuffer(msg);
}
/* Check if there are pending messages for dcsm
* if it in the right state perform its operation
*/
dcsm_process_jobs();
}
}
}
