-
Notifications
You must be signed in to change notification settings - Fork 0
/
EventLoop.cc
137 lines (124 loc) · 2.89 KB
/
EventLoop.cc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
#include"./EventLoop.h"
#include"./Poller.h"
#include"./Channel.h"
#include"MutexLockGrard.h"
#include"MutexLock.h"
#include<sys/eventfd.h>
#include<functional>
#include<errno.h>
#include<glog/logging.h>
EventLoop::EventLoop()
:looping_(false),
threadId_(pthread_self()),
poller_(new Poller(this)),
callQueueFunc(false),
WeakUpFd_(CreatEventFd()),
WeakUpChannel_(new Channel(WeakUpFd_,this)),
mutex_(new MutexLock())
{
LOG(INFO)<<"EventLoop: "<<this<<" be created in "<<threadId_<<" thread\n";
WeakUpChannel_->setReadCallBack(
std::bind(&EventLoop::handleWeadupFdEvent,this)
);
WeakUpChannel_->enabelReading();
};
/*
eventloop的真正业务 获得当前监听fd的活动事件 并调用其相应事件处理函数
*/
void EventLoop::loop()
{
//assert(!looping_);
assertinLoopThread();
//looping_=true;
this->quit_=false;
while(!quit_){
activityChannels.clear();
poller_->poll(&activityChannels);
for(std::vector<Channel*>::const_iterator it=activityChannels.begin();
it!=activityChannels.end();
it++)
{
(*it)->handleEvent();
}
doQueueFunc();
}
};
void EventLoop::updateChannel(Channel *channel)
{
assert(channel->getOwnerLoop()==this);
assertinLoopThread();
poller_->updateChanels(channel);
}
void EventLoop::RunInLoopThread(const Functor cb)
{
if(isInLoopThread())
cb();
else
QueueInLoop(std::move(cb));
}
void EventLoop::QueueInLoop(const Functor cb)
{
{
MutexLockGrard lock(*mutex_);
FuncQueue.push_back(std::move(cb));
}
if(!isInLoopThread()||callQueueFunc)
weakUp();
}
void EventLoop::weakUp()
{
//激活poll(3)
uint64_t WeakMessage=2;
int writelen =::write(WeakUpFd_,&WeakMessage, sizeof WeakMessage);
if(writelen<0)
{
LOG(ERROR)<<"weakUp write\n";
}
}
void EventLoop::doQueueFunc()
{
std::vector<Functor> functors;
callQueueFunc=true;
{
MutexLockGrard lock(*mutex_);
functors.swap(FuncQueue);
}
callQueueFunc=false;
/*for(const Functor &f :functors)
f();*/
std::vector<Functor>::const_iterator it=functors.begin();
for(;it!=functors.end();it++)
(*it)();
}
int EventLoop::CreatEventFd()
{
int evtfd = ::eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
if (evtfd < 0)
{
LOG(ERROR)<< "Failed in eventfd"<<std::endl;
abort();
}
return evtfd;
}
void EventLoop::quit()
{
quit_=true;
if(!isInLoopThread())
weakUp();
}
void EventLoop::handleWeadupFdEvent()
{
int64_t one;
int nrd=::read(WeakUpFd_,&one,sizeof one);
if(nrd<0)
LOG(ERROR)<<"error in EventLoop::handleWeadupFdEvent()\n";
}
EventLoop::~EventLoop()
{
;
}
void EventLoop::removeChannel(Channel * channel)
{
assert(isInLoopThread());
poller_->removeChannel(channel);
}