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#include "channel.h"
using namespace swoole;
static void channel_defer_callback(void *data)
{
notify_msg_t *msg = (notify_msg_t*) data;
coroutine_t *co = msg->chan->pop_coroutine(msg->type);
coroutine_resume(co);
delete msg;
}
static void channel_pop_timeout(swTimer *timer, swTimer_node *tnode)
{
timeout_msg_t *msg = (timeout_msg_t *) tnode->data;
msg->error = true;
msg->timer = nullptr;
msg->chan->remove(msg->co);
coroutine_resume(msg->co);
}
Channel::Channel(size_t _capacity)
{
capacity = _capacity;
closed = false;
notify_producer_count = 0;
notify_consumer_count = 0;
}
void Channel::yield(enum channel_op type)
{
int _cid = coroutine_get_current_cid();
if (_cid == -1)
{
swError("Socket::yield() must be called in the coroutine.");
}
coroutine_t *co = coroutine_get_by_id(_cid);
if (type == PRODUCER)
{
producer_queue.push_back(co);
swDebug("producer[%d]", coroutine_get_cid(co));
}
else
{
consumer_queue.push_back(co);
swDebug("consumer[%d]", coroutine_get_cid(co));
}
coroutine_yield(co);
}
void Channel::notify(enum channel_op type)
{
notify_msg_t *msg = new notify_msg_t;
msg->chan = this;
msg->type = type;
if (type == PRODUCER)
{
notify_producer_count++;
}
else
{
notify_consumer_count++;
}
SwooleG.main_reactor->defer(SwooleG.main_reactor, channel_defer_callback, msg);
}
void* Channel::pop(double timeout)
{
timeout_msg_t msg;
msg.error = false;
if (timeout > 0)
{
int msec = (int) (timeout * 1000);
if (SwooleG.timer.fd == 0)
{
swTimer_init (msec);
}
msg.chan = this;
msg.co = coroutine_get_by_id(coroutine_get_current_cid());
msg.timer = SwooleG.timer.add(&SwooleG.timer, msec, 0, &msg, channel_pop_timeout);
}
else
{
msg.timer = NULL;
}
if (is_empty() || consumer_queue.size() > 0)
{
yield(CONSUMER);
}
if (msg.error)
{
return nullptr;
}
if (msg.timer)
{
swTimer_del(&SwooleG.timer, msg.timer);
}
/**
* pop data
*/
void *data = data_queue.front();
data_queue.pop();
/**
* notify producer
*/
if (producer_queue.size() > 0 && notify_producer_count < producer_queue.size())
{
notify(PRODUCER);
}
return data;
}
bool Channel::push(void *data)
{
if (is_full() || producer_queue.size() > 0)
{
yield(PRODUCER);
}
/**
* push data
*/
data_queue.push(data);
swDebug("push data, count=%ld", length());
/**
* notify consumer
*/
if (consumer_queue.size() > 0 && notify_consumer_count < consumer_queue.size())
{
notify(CONSUMER);
}
return true;
}
bool Channel::close()
{
if (closed)
{
return false;
}
swDebug("closed");
closed = true;
while (producer_queue.size() > 0 && notify_producer_count < producer_queue.size())
{
notify(PRODUCER);
}
while (consumer_queue.size() > 0 && notify_consumer_count < producer_queue.size())
{
notify(CONSUMER);
}
return true;
}
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