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#include<pthread.h>
#include<semaphore.h>
#include<sys/eventfd.h>
#include<queue>
#include<vector>
class tpool_protofn{
public:
virtual void operator()(void *data) = 0;
};
template<typename C>
class tpool_fn : public tpool_protofn{
private:
typedef void (C::*tpool_fn_type)(void *data);
C *obj;
tpool_fn_type fn;
public:
tpool_fn(C *obj,tpool_fn_type fn){
this->obj = obj;
this->fn = fn;
}
void operator()(void *data){
(obj->*fn)(data);
}
};
class tpool_static_fn : public tpool_protofn{
private:
typedef void (*tpool_static_fn_type)(void *data);
tpool_static_fn_type fn;
public:
tpool_static_fn(tpool_static_fn_type fn){
this->fn = fn;
}
void operator()(void *data){
fn(data);
}
};
class tpool_thcb{
public:
tpool_protofn *th_fn;
void *th_data;
tpool_protofn *cb_fn;
void *cb_data;
tpool_thcb(tpool_protofn *th_fn,void *th_data,tpool_protofn *cb_fn,void *cb_data){
this->th_fn = th_fn;
this->th_data = th_data;
this->cb_fn = cb_fn;
this->cb_data = cb_data;
}
int run(){
(*th_fn)(th_data);
return 0;
}
int done(){
if(cb_fn != NULL){
(*cb_fn)(cb_data);
}
return 0;
}
};
#define TPOOL_THREAD_MAXNUM 64
class tpool{
private:
std::queue<tpool_thcb*> wait_queue;
std::vector<tpool_thcb*> done_list;
pthread_t pt[TPOOL_THREAD_MAXNUM];
int pt_num;
sem_t pt_sem;
pthread_mutex_t pt_mutex;
static void* pt_runfn(void *arg){
tpool *that;
tpool_thcb *thcb;
long long int sig;
that = (tpool*)arg;
while(true){
sem_wait(&that->pt_sem);
pthread_mutex_lock(&that->pt_mutex);
if(!that->wait_queue.empty()){
thcb = that->wait_queue.front();
that->wait_queue.pop();
}else{
thcb = NULL;
}
pthread_mutex_unlock(&that->pt_mutex);
if(thcb == NULL){
continue;
}
thcb->run();
pthread_mutex_lock(&that->pt_mutex);
that->done_list.push_back(thcb);
pthread_mutex_unlock(&that->pt_mutex);
sig = 1;
write(that->fd,&sig,sizeof(sig)),that->done_list.size();
}
return NULL;
}
public:
int fd;
tpool(int pt_num){
if((this->pt_num = pt_num) > TPOOL_THREAD_MAXNUM){
this->pt_num = TPOOL_THREAD_MAXNUM;
}
fd = eventfd(0,EFD_NONBLOCK);
sem_init(&pt_sem,0,0);
pthread_mutex_init(&pt_mutex,NULL);
}
~tpool(){
close(fd);
sem_destroy(&pt_sem);
pthread_mutex_destroy(&pt_mutex);
}
int start(){
int i;
for(i = 0;i < pt_num;i++){
pthread_create(&pt[pt_num],NULL,pt_runfn,this);
}
return 0;
}
int done(){
int i;
std::vector<tpool_thcb*> l;
long long int sig;
pthread_mutex_lock(&pt_mutex);
l.swap(done_list);
pthread_mutex_unlock(&pt_mutex);
for(i = l.size() - 1;i >= 0;i--){
l[i]->done();
delete l[i];
}
read(fd,&sig,sizeof(sig));
}
int add(tpool_protofn *th_fn,void *th_data,tpool_protofn *cb_fn,void *cb_data){
tpool_thcb *thcb;
thcb = new tpool_thcb(th_fn,th_data,cb_fn,cb_data);
pthread_mutex_lock(&pt_mutex);
wait_queue.push(thcb);
pthread_mutex_unlock(&pt_mutex);
sem_post(&pt_sem);
return 0;
}
};
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