/*
* cleanup a mail box
* mbox: pointer to mail box
*/
void mbox_destroy(mbox_t *mbox)
{
struct dtask *t;
uint32_t f;
if(mbox && (mbox->flag & IPC_FLAG_VALID))
{
SYS_FSAVE(f);
if(mbox->flag & IPC_FLAG_FREEMEM)
free(mbox->buf.data);
#ifdef INCLUDE_JOURNAL
journal_ipc_destroy((ipc_t *)mbox);
#endif
#ifdef INCLUDE_PMCOUNTER
PMC_PEG_COUNTER(PMC_sys32_counter[PMC_U32_nMbox], -1);
#endif
mbox->flag = 0;
/* wake up all tasks in mbox's block task queue */
while((t = blockq_select(&mbox->taskq)))
{
task_wakeup_noschedule(TASK_T(t));
}
task_schedule();
/* left mbox->buf.data to be freed by user */
SYS_FRESTORE(f);
}
}
void FreeCommBuffData(COMMBUFF *commbuff)
{
INTERRUPT_STATE state;
COMMBUFFTAG **tags;
COMMBUFFTAG *freetag;
int32 index;
index = GET_COMMBUFF_TAG_INDEX(commbuff);
tags = &commbuff_tags[index];
disable_interrupts(state);
while (*tags) {
if ((*tags)->commbuff == commbuff) {
freetag = *tags;
*tags = freetag->next_tag;
freetag->next_tag = released_tagged_commbuffs;
released_tagged_commbuffs = freetag;
enable_interrupts(state);
task_schedule(&tagged_commbuff_release_task.
releasetask);
return;
}
tags = &(*tags)->next_tag;
}
enable_interrupts(state);
}
void sys_pause(struct cpu_state **cpu)
{
thread_suspend(current_thread);
(*cpu)->CPU_ARG0 = 0;
*cpu = (struct cpu_state *)task_schedule(*cpu);
}
void task_sleep(unsigned long delay)
{
timer_t *timer;
dbg("start sleep ...\n");
#ifdef DEBUG
scheduler->dump();
#endif
timer = (timer_t *)kmalloc(sizeof(*timer));
if (NULL == timer)
{
error("%s: alloc timer failled\n");
}
init_timer_value(timer);
enter_critical_section();
oneshot_timer_add(timer, delay, (timer_function)task_sleep_function, (void *)current_task);
current_task->state = SLEEPING;
scheduler->dequeue_task(current_task, 0);
task_schedule();
exit_critical_section();
}
/*
* TransmitQueryInterface assembles a control query interface packet and initializes the transmit procedure
*
* Params:
* acktype specifies host or client as well as failure or success
* host_interface is the interface which belongs to the host of the query
* result is the resultant interface id which is relevent only when acktype is host_end(SUCCESS)
* mux is the MUX object the data is to be transmitted through
*/
int32 TransmitQueryInterface (int8 acktype, int8 host_interface, int8 result, sint8* name, MUX* mux)
{
COMMBUFF* commbuff;
QUERYINTERFACE_PACKET* packetdata;
int32 namesize;
DEBUG("TransmitQueryInterface(%lu, %lu, %lu, %p, %p)\n", (int32)acktype, (int32)host_interface, (int32)result, name, mux);
if(name)
namesize = strlen((char*)name)+1;
else
namesize = 0;
if(namesize > PACKET_MAXNAME_LENGTH)
return DEBUGERROR(ERROR_INVALIDPARAMETER);
commbuff = int_alloc_commbuff(sizeof(QUERYINTERFACE_PACKET));
packetdata = (QUERYINTERFACE_PACKET*)commbuff_data(commbuff);
packetdata->type = PACKETTYPE_QUERYINTERFACE;
commbuff_copyin_byte(commbuff, offsetof(QUERYINTERFACE_PACKET, acktype), acktype);
commbuff_copyin_byte(commbuff, offsetof(QUERYINTERFACE_PACKET, host_interface), host_interface);
commbuff_copyin_byte(commbuff, offsetof(QUERYINTERFACE_PACKET, result), result);
commbuff_copyin(commbuff, offsetof(QUERYINTERFACE_PACKET, name), name, namesize);
queue_commbuff(commbuff, &mux->send_queue);
mux->total_queued_amount += sizeof(QUERYINTERFACE_PACKET);
task_schedule(&mux->send_task);
return DEBUGERROR(ERROR_NONE);
}
/*
* TransmitCredit assembles a control credit packet and initializes the transmit procedure
*
* Params:
* acktype specifies host or client as well as failure or success
* channel is the channel the credit should be applied to
* bytecredit is the amount the byte credit should be increased
* sendcredit is the amount the send credit should be increased
* mux is the MUX object the data is to be transmitted through
*/
int32 TransmitCredit (int8 acktype, int8 channel, int32 bytecredit, int32 sendcredit, MUX* mux)
{
COMMBUFF* commbuff;
CREDIT_PACKET* packetdata;
DEBUG(
"TransmitCredit(%lu, %lu, %lu, 0x%lu, %p)\n",
(int32)acktype,
(int32)channel,
(int32)bytecredit,
(int32)sendcredit,
mux
);
commbuff = int_alloc_commbuff(sizeof(CREDIT_PACKET));
convert_dword(bytecredit);
convert_dword(sendcredit);
packetdata = (CREDIT_PACKET*)commbuff_data(commbuff);
packetdata->type = PACKETTYPE_CREDIT;
commbuff_copyin_byte(commbuff, offsetof(CREDIT_PACKET, acktype), acktype);
commbuff_copyin_byte(commbuff, offsetof(CREDIT_PACKET, channel), channel);
commbuff_copyin_dword(commbuff, offsetof(CREDIT_PACKET, bytecredit), bytecredit);
commbuff_copyin_dword(commbuff, offsetof(CREDIT_PACKET, sendcredit), sendcredit);
queue_commbuff(commbuff, &mux->send_queue);
mux->total_queued_amount += sizeof(CREDIT_PACKET);
task_schedule(&mux->send_task);
return DEBUGERROR(ERROR_NONE);
}
/*
* TransmitDisableChannel assembles a control disable channel packet and initializes the transmit procedure
*
* Params:
* acktype specifies host or client as well as failure or success
* channel is the channel to be disabled
* host_interface is the interface which belongs to the host and is requesting the disable
* client_interface is the interface which belongs to the client and is responding to the disable
* mux is the MUX object the data is to be transmitted through
*/
int32 TransmitDisableChannel (int8 acktype, int8 channel, int8 host_interface, int8 client_interface, MUX* mux)
{
COMMBUFF* commbuff;
DISABLECHANNEL_PACKET* packetdata;
DEBUG("TransmitDisableChannel(%lu, %lu, %lu, %lu, %p)\n", (int32)acktype, (int32)channel, (int32)host_interface, (int32)client_interface, mux);
commbuff = int_alloc_commbuff(sizeof(DISABLECHANNEL_PACKET));
packetdata = (DISABLECHANNEL_PACKET*)commbuff_data(commbuff);
packetdata->type = PACKETTYPE_DISABLECHANNEL;
commbuff_copyin_byte(commbuff, offsetof(DISABLECHANNEL_PACKET, acktype), acktype);
commbuff_copyin_byte(commbuff, offsetof(DISABLECHANNEL_PACKET, channel), channel);
commbuff_copyin_byte(commbuff, offsetof(DISABLECHANNEL_PACKET, host_interface), host_interface);
commbuff_copyin_byte(commbuff, offsetof(DISABLECHANNEL_PACKET, client_interface), client_interface);
queue_commbuff(commbuff, &mux->send_queue);
mux->total_queued_amount += sizeof(DISABLECHANNEL_PACKET);
task_schedule(&mux->send_task);
return DEBUGERROR(ERROR_NONE);
}
signed long schedule_timeout(signed long timeout)
{
timer_t *timer;
unsigned long expire;
switch (timeout)
{
case MAX_SCHEDULE_TIMEOUT:
current_task->state = SLEEPING;
scheduler->dequeue_task(current_task, 0);
task_schedule();
goto out;
default:
if (timeout < 0) {
printk("schedule_timeout: wrong timeout "
"value %lx\n", timeout);
current_task->state = RUNNING;
goto out;
}
}
expire = timeout + current_time();
task_sleep(expire);
timeout = expire - current_time();
out:
return timeout < 0 ? 0 : timeout;
}
error_t event_send (task_handle_t _handle, event_set_t _sent)
{
interrupt_level_t level;
bool wakeup_needed = false;
level = global_interrupt_disable ();
if (is_invalid_task (_handle)) {
global_interrupt_enable (level);
return ERROR_T (ERROR_EVENT_RECV_INVRECEIVER);
}
_handle->event_received_ |= _sent;
if (0 == (int)_handle->event_option_) {
global_interrupt_enable (level);
return 0;
}
if (EVENT_WAIT_ALL == (_handle->event_option_ & EVENT_WAIT_ALL)) {
if ((_handle->event_expected_ & _handle->event_received_) ==
_handle->event_expected_) {
wakeup_needed = true;
}
}
else {
if ((_handle->event_expected_ & _handle->event_received_) != 0) {
wakeup_needed = true;
}
}
if (!wakeup_needed) {
global_interrupt_enable (level);
return 0;
}
(void) task_state_change (_handle, TASK_STATE_READY);
global_interrupt_enable (level);
task_schedule (null);
return 0;
}
/*
* TransmitChannelSignal transmits a four int8 value to the channel
*
* Params:
* acktype specifies host or client as well as failure or success
* channel is the channel to be signaled
* signal is the value to be delivered
* mux is the MUX object the data is to be transmitted through
*/
int32 TransmitChannelSignal(int8 acktype, int8 channel, int32 signal,
MUX *mux)
{
COMMBUFF *commbuff;
CHANNELSIGNAL_PACKET *packetdata;
DEBUG("TransmitChannelSignal(%lu, %lu, %lu, %p)\n",
(int32) acktype, (int32) channel, signal, mux);
commbuff = int_alloc_commbuff(sizeof(CHANNELSIGNAL_PACKET));
packetdata = (CHANNELSIGNAL_PACKET *) commbuff_data(commbuff);
packetdata->type = PACKETTYPE_CHANNELSIGNAL;
commbuff_copyin_byte(commbuff,
offsetof(CHANNELSIGNAL_PACKET, acktype),
acktype);
commbuff_copyin_byte(commbuff,
offsetof(CHANNELSIGNAL_PACKET, channel),
channel);
commbuff_copyin_dword(commbuff,
offsetof(CHANNELSIGNAL_PACKET, signal),
signal);
queue_commbuff(commbuff, &mux->send_queue);
mux->total_queued_amount += sizeof(CHANNELSIGNAL_PACKET);
task_schedule(&mux->send_task);
return DEBUGERROR(ERROR_NONE);
}
/*-----------------------------------------------------------------------*/
void task_wakeup(task_t t)
{
uint32_t f;
SYS_FSAVE(f);
task_wakeup_noschedule(t);
task_schedule();
SYS_FRESTORE(f);
}
/*-----------------------------------------------------------------------*/
void task_resume(task_t t)
{
if(t >= MAX_TASK_NUMBER)
return;
task_resume_noschedule(t);
task_schedule();
}
/*-----------------------------------------------------------------------*/
void task_block(blockq_t * tqueue)
{
uint32_t f;
SYS_FSAVE(f);
task_block_noschedule(tqueue);
task_schedule();
SYS_FRESTORE(f);
}
int main(void)
{
// Hardware Init
delay_init(); //ÑÓʱº¯Êý³õʼ»¯
pwr_init();
#ifdef YANMING3
charger_init();
if (check_standby_flag() == SUCCESS && check_charging() != CHARGING) {
Key_GPIO_Config();
exti_key_init();
#ifdef DEBUG_POWER_OFF_WAKE_UP
Screen_Init();
OLED_Clear();
OLED_Display_On();
draw_about_mesage();
#endif
check_standby_wakeup_button_press();
// If we boot up from standby by pressing 5 times, the system will reboot again without
// this code block.
}
#endif
// OLED Init
Screen_Init();
OLED_Clear();
//
low_switch_power_init();
TIMx_Int_DeInit();
EXTIX_DeInit();
// Key
Key_GPIO_Config();
// PID related code
ADC1_Configuration();
PWM_Configuration();
VoltagePID_Init();
TIMx_Int_Init();
rtc_init();
// Our Init
system_init();
#ifndef YANMING3
//iwdg_init();
#endif
while(1) {
#ifndef YANMING3
//iwdg_feed();
#endif
task_schedule();
}
}
void task_sleep(struct Task* task)
{
if(task->state == SLEEPING)
panic("SLEEPING SLEEPING");
if(task->state == WAKEN_BEFORE_SLEEP)
task->state = RUNNING;
else if(task->state == RUNNING)
task->state = SLEEPING;
task_schedule();
}
static int try_to_wake_up(task_t *t)
{
t->state = READY;
enter_critical_section();
scheduler->enqueue_task(t, 0);
task_schedule();
exit_critical_section();
return 0;
}
void kmain(void)
{
task_t *task_shell;
int ret;
/*************** Init Arch ****************/
arch_early_init();
show_logo();
/*************** Init Platform ****************/
platform_init();
timer_init();
buses_init();
/*************** Init Task ****************/
task_init();
task_create_init();
/*************** Init Workqueu ****************/
init_workqueues();
/*************** Init File System ****************/
register_filesystem(&fat_fs);
/*************** Creating Shell TASK ****************/
task_shell = task_alloc("shell", 0x2000, 5);
if (NULL == task_shell)
{
return;
}
ret = task_create(task_shell, init_shell, 0);
if (ret) {
printk("Create init shell task failed\n");
}
sema_init(&sem, 1);
arch_enable_ints();
while(1)
{
enter_critical_section();
arch_idle();
task_schedule();
exit_critical_section();
}
task_free(task_shell);
}
void task_exit(int retcode)
{
enter_critical_section();
current_task->state = EXITED;
current_task->ret = retcode;
#ifdef DEBUG
scheduler->dump();
#endif
scheduler->dequeue_task(current_task, 0);
task_schedule();
}
/*-----------------------------------------------------------------------*/
void task_yield()
{
uint32_t f;
struct dtask *task;
SYS_FSAVE(f);
task = current;
if(task->state == TASK_STATE_READY)
{
readyq_dequeue(&sysready_queue, task);
readyq_enqueue(&sysready_queue, task);
task_schedule();
}
SYS_FRESTORE(f);
}
/*
* Suspend the current task so that other tasks can run.
*/
void
task_yield ()
{
arch_state_t x;
arch_intr_disable (&x);
/* Enqueue always puts element at the tail of the list. */
list_append (&task_active, &task_current->item);
/* Scheduler selects the first task.
* If there are several tasks with equal priority,
* this will allow them to run round-robin. */
task_schedule ();
arch_intr_restore (x);
}
STATIC void kernel()
{
//Create an idle-task
task_insert(&idletask, idle, Low);
//enable watchdog
wdt_enable(WDTO_2S);
//init user specific stuff
init_user_environment();
//start scheduler
task_schedule();
while(1)
{
/* this should never been reached */
}
}
bool_t
mutex_group_lockwaiting (mutex_t *m, mutex_group_t *g, mutex_t **lock_ptr, void **msg_ptr)
{
if (mutex_recurcived_lock(m))
return 1;
arch_state_t x;
struct mg_signal_ctx signaler = {g, lock_ptr, msg_ptr};
arch_intr_disable (&x);
assert_task_good_stack(task_current);
assert (task_current->wait == 0);
gr_assert_good(g);
assert (g->num > 0);
if (m != NULL)
if (! m->item.next)
mutex_init (m);
for (;;) {
if (m != NULL)
if (mutex_trylock_in(m)) {
arch_intr_restore (x);
return true;
}
if (mutex_group_signaled(&signaler)) {
arch_intr_restore (x);
return false;
}
if (m != NULL)
mutex_slaved_yield(m);
else {
/* Suspend the task. */
list_unlink (&task_current->item);
task_schedule ();
}
}
}
void lock(int* mutex)
{
int aquired = 0;
do
{
asm("pushf");
asm("cli");
if(*mutex == 0)
{
*mutex = 1;
aquired = 1;
}
asm("popf");
if(!aquired)
task_schedule();
}
while(!aquired);
}
/*
* TransmitDisableMUX assembles a control disable mux packet and initializes the transmit procedure
*
* Params:
* acktype specifies host or client as well as failure or success
* mux is the MUX object the data is to be transmitted through
*/
int32 TransmitDisableMUX (int8 acktype, MUX* mux)
{
COMMBUFF* commbuff;
DISABLEMUX_PACKET* packetdata;
DEBUG("TransmitDisableMUX(%lu, %p)\n", (int32)acktype, mux);
commbuff = int_alloc_commbuff(sizeof(DISABLEMUX_PACKET));
packetdata = (DISABLEMUX_PACKET*)commbuff_data(commbuff);
packetdata->type = PACKETTYPE_DISABLEMUX;
commbuff_copyin_byte(commbuff, offsetof(DISABLEMUX_PACKET, acktype), acktype);
queue_commbuff(commbuff, &mux->send_queue);
mux->total_queued_amount += sizeof(DISABLEMUX_PACKET);
task_schedule(&mux->send_task);
return DEBUGERROR(ERROR_NONE);
}
// TODO: To standard this scenario
void start_dooloo(void)
{
interrupt_disable();
os_hw_init();
kprintf("\n\nProbability core Version %s\n", OS_VERSION);
kprintf("Author: Puhui Xiong ([email protected]) \n\n");
/* trace irq stack */
_irq_stack_start[0] = _irq_stack_start[1] = '#';
memory_inita();
task_init();
kprintf(" Task subsystem inited.\n");
ipc_init();
kprintf(" IPC subsystem inited.\n");
memory_initb();
kprintf(" Memory subsystem inited.\n");
idletask_init();
root_task_init();
kprintf(" Create task tidle and troot.\n");
task_set_schedule_hook(default_sched_hook);
/* set current to an invalid tcb, then begin to schedule */
current = &systask[0];
kprintf(" Ready to first scheduling, go!!\n\n");
/* before schedule, we have to enable interrupt for pendsv() used */
interrupt_enable();
task_schedule();
kprintf("\nSystem halted.\n");
while(1);
}
/*
* exit current task and switch to a new task.
* Warning: Don't exit the current task if you are in a ciritical region.
*/
void task_exit()
{
uint32_t f;
struct dtask *task;
SYS_FSAVE(f);
task = current;
/* remove task from it's queue */
if(task->state == TASK_STATE_READY)
readyq_dequeue(&sysready_queue, task);
else if(task->state == TASK_STATE_BLOCK)
blockq_dequeue(task->taskq, task);
/* remove task from delay queue */
if(task->flags & TASK_FLAGS_DELAYING)
task_undelay(TASK_T(task));
task->state = TASK_STATE_DEAD;
SYS_FRESTORE(f);
#ifdef INCLUDE_JOURNAL
journal_task_exit(task);
#endif
#ifdef INCLUDE_PMCOUNTER
PMC_PEG_COUNTER(PMC_sys32_counter[PMC_U32_nTask],-1);
#endif
/* free task's stack */
if(!(task->flags & TASK_FLAGS_STATICSTACK))
free((void *)task->stack_base);
/* switch to new task */
task_schedule();
}
/*
* Wait for the signal on any lock in the group.
* The calling task is blocked until the mutex_signal().
* Returns the lock and the signalled message.
*/
void
mutex_group_wait (mutex_group_t *g, mutex_t **lock_ptr, void **msg_ptr)
{
arch_state_t x;
struct mg_signal_ctx signaler = {g, lock_ptr, msg_ptr};
arch_intr_disable (&x);
assert_task_good_stack(task_current);
assert (task_current->wait == 0);
gr_assert_good(g);
assert (g->num > 0);
for (;;) {
if (mutex_group_signaled(&signaler)) {
arch_intr_restore (x);
return;
}
/* Suspend the task. */
list_unlink (&task_current->item);
g->waiter = task_current;
task_schedule ();
}
}
error_t event_receive (event_set_t _expected, event_set_handle_t _received,
msecond_t _timeout, event_option_t _option)
{
interrupt_level_t level;
event_option_t wait_option = EVENT_WAIT_ALL | EVENT_WAIT_ANY;
event_option_t return_option = EVENT_RETURN_ALL | EVENT_RETURN_EXPECTED;
task_handle_t p_task;
if (is_in_interrupt ()) {
return ERROR_T (ERROR_EVENT_RECV_INVCONTEXT);
}
if (0 == _expected) {
return 0;
}
if (null == _received) {
return ERROR_T (ERROR_EVENT_RECV_INVPTR);
}
if ((wait_option == (wait_option & _option)) ||
(0 == (int)(wait_option & _option)) ||
(return_option == (return_option & _option)) ||
(0 == (int)(return_option & _option))) {
return ERROR_T (ERROR_EVENT_RECV_INVOPT);
}
level = global_interrupt_disable ();
p_task = task_self ();
if (is_invalid_task (p_task)) {
global_interrupt_enable (level);
return ERROR_T (ERROR_EVENT_RECV_INVCONTEXT);
}
again:
// if expected event(s) is/are available, return it
if (EVENT_WAIT_ALL == (_option & EVENT_WAIT_ALL)) {
if ((_expected & p_task->event_received_) == _expected) {
if (EVENT_RETURN_ALL == (_option & EVENT_RETURN_ALL)) {
*_received = p_task->event_received_;
}
else {
*_received = _expected;
p_task->event_received_ &= ~(*_received);
}
global_interrupt_enable (level);
return 0;
}
}
else {
if ((_expected & p_task->event_received_) != 0) {
if (EVENT_RETURN_ALL == (_option & EVENT_RETURN_ALL)) {
*_received = p_task->event_received_;
}
else {
*_received = _expected & p_task->event_received_;
p_task->event_received_ &= ~(*_received);
}
global_interrupt_enable (level);
return 0;
}
}
// run here it means we need to block the task
p_task->timeout_ = _timeout;
(void) task_state_change (p_task, TASK_STATE_WAITING);
p_task->ecode_ = 0;
p_task->event_expected_ = _expected;
p_task->event_option_ = _option;
global_interrupt_enable (level);
task_schedule (null);
level = global_interrupt_disable ();
p_task->event_option_ = (event_option_t) 0;
if (0 == p_task->ecode_) {
// event(s) has/have received and need to return the event(s) expected
goto again;
}
global_interrupt_enable (level);
//lint -e{650}
if (ERROR_TASK_WAIT_TIMEOUT == MODULE_ERROR (p_task->ecode_)) {
p_task->ecode_ = ERROR_T (ERROR_EVENT_RECV_TIMEOUT);
}
return p_task->ecode_;
}
/* This function is called on a read event from a listening socket, corresponding
* to an accept. It tries to accept as many connections as possible, and for each
* calls the listener's accept handler (generally the frontend's accept handler).
*/
int stream_sock_accept(int fd)
{
struct listener *l = fdtab[fd].owner;
struct proxy *p = l->frontend;
int max_accept = global.tune.maxaccept;
int cfd;
int ret;
if (unlikely(l->nbconn >= l->maxconn)) {
listener_full(l);
return 0;
}
if (global.cps_lim && !(l->options & LI_O_UNLIMITED)) {
int max = freq_ctr_remain(&global.conn_per_sec, global.cps_lim, 0);
if (unlikely(!max)) {
/* frontend accept rate limit was reached */
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, next_event_delay(&global.conn_per_sec, global.cps_lim, 0)));
return 0;
}
if (max_accept > max)
max_accept = max;
}
if (p && p->fe_sps_lim) {
int max = freq_ctr_remain(&p->fe_sess_per_sec, p->fe_sps_lim, 0);
if (unlikely(!max)) {
/* frontend accept rate limit was reached */
limit_listener(l, &p->listener_queue);
task_schedule(p->task, tick_add(now_ms, next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0)));
return 0;
}
if (max_accept > max)
max_accept = max;
}
/* Note: if we fail to allocate a connection because of configured
* limits, we'll schedule a new attempt worst 1 second later in the
* worst case. If we fail due to system limits or temporary resource
* shortage, we try again 100ms later in the worst case.
*/
while (max_accept--) {
struct sockaddr_storage addr;
socklen_t laddr = sizeof(addr);
if (unlikely(actconn >= global.maxconn) && !(l->options & LI_O_UNLIMITED)) {
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, 1000)); /* try again in 1 second */
return 0;
}
if (unlikely(p && p->feconn >= p->maxconn)) {
limit_listener(l, &p->listener_queue);
return 0;
}
cfd = accept(fd, (struct sockaddr *)&addr, &laddr);
if (unlikely(cfd == -1)) {
switch (errno) {
case EAGAIN:
case EINTR:
case ECONNABORTED:
return 0; /* nothing more to accept */
case ENFILE:
if (p)
send_log(p, LOG_EMERG,
"Proxy %s reached system FD limit at %d. Please check system tunables.\n",
p->id, maxfd);
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, 100)); /* try again in 100 ms */
return 0;
case EMFILE:
if (p)
send_log(p, LOG_EMERG,
"Proxy %s reached process FD limit at %d. Please check 'ulimit-n' and restart.\n",
p->id, maxfd);
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, 100)); /* try again in 100 ms */
return 0;
case ENOBUFS:
case ENOMEM:
if (p)
send_log(p, LOG_EMERG,
"Proxy %s reached system memory limit at %d sockets. Please check system tunables.\n",
p->id, maxfd);
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, 100)); /* try again in 100 ms */
return 0;
default:
return 0;
}
}
if (unlikely(cfd >= global.maxsock)) {
send_log(p, LOG_EMERG,
"Proxy %s reached the configured maximum connection limit. Please check the global 'maxconn' value.\n",
p->id);
close(cfd);
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, 1000)); /* try again in 1 second */
return 0;
}
/* increase the per-process number of cumulated connections */
if (!(l->options & LI_O_UNLIMITED)) {
update_freq_ctr(&global.conn_per_sec, 1);
if (global.conn_per_sec.curr_ctr > global.cps_max)
global.cps_max = global.conn_per_sec.curr_ctr;
actconn++;
}
jobs++;
totalconn++;
l->nbconn++;
if (l->counters) {
if (l->nbconn > l->counters->conn_max)
l->counters->conn_max = l->nbconn;
}
ret = l->accept(l, cfd, &addr);
if (unlikely(ret <= 0)) {
/* The connection was closed by session_accept(). Either
* we just have to ignore it (ret == 0) or it's a critical
* error due to a resource shortage, and we must stop the
* listener (ret < 0).
*/
if (!(l->options & LI_O_UNLIMITED))
actconn--;
jobs--;
l->nbconn--;
if (ret == 0) /* successful termination */
continue;
limit_listener(l, &global_listener_queue);
task_schedule(global_listener_queue_task, tick_add(now_ms, 100)); /* try again in 100 ms */
return 0;
}
if (l->nbconn >= l->maxconn) {
listener_full(l);
return 0;
}
} /* end of while (p->feconn < p->maxconn) */
return 0;
}
/*
* unlock task schedule
*/
void task_unlock()
{
sys_schedule_flags &= ~SCHEDULE_FLAGS_LOCK;
task_schedule();
}