-
Notifications
You must be signed in to change notification settings - Fork 0
/
deferredtasksexecutor.cpp
93 lines (79 loc) · 2.14 KB
/
deferredtasksexecutor.cpp
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
#include "deferredtasksexecutor.h"
#include "task.h"
#include <thread>
#include <iostream>
#include <utility>
#include <chrono>
#include <memory>
bool Comparer::operator() (const DeferredTask lhs, const DeferredTask rhs)
{
return (lhs.getPriority() < rhs.getPriority());
}
DeferredTasksExecutor::DeferredTasksExecutor(): DeferredTasksExecutor(std::thread::hardware_concurrency())
{
}
DeferredTasksExecutor::DeferredTasksExecutor(unsigned int taskCount) : m_maxThreads(taskCount)
{
if (m_maxThreads == 0)
m_maxThreads = std::thread::hardware_concurrency();
}
DeferredTasksExecutor::~DeferredTasksExecutor()
{
terminateWorkers();
}
void DeferredTasksExecutor::execute()
{
std::cout << "Started with " << m_maxThreads << " threads" << std::endl;
for(unsigned int i=0;i<m_maxThreads;++i) {
m_threads.push_back(std::thread(worker,(void*)this));
}
}
void DeferredTasksExecutor::wait()
{
while(taskpool.hasTasks()) {
std::this_thread::yield();
}
}
void DeferredTasksExecutor::terminateWorkers()
{
m_terminate = true;
// wait for closing all threads
for(std::thread & worker:m_threads) {
if(worker.joinable())
worker.join();
}
}
int DeferredTasksExecutor::addTask(Task & task, int priority)
{
return taskpool.addTask(task, priority);
}
bool DeferredTasksExecutor::cancelTask(int taskId)
{
return taskpool.cancelTask(taskId);
}
std::shared_ptr<std::vector<int> > DeferredTasksExecutor::getTasksPriority()
{
return taskpool.getTasksPriority();
}
void DeferredTasksExecutor::realWorker()
{
std::thread::id threadId = std::this_thread::get_id();
std::cout << "Starting worker..." << threadId << std::endl;
while (true) {
Task *task = nullptr;
if (( task = taskpool.getTask() )) {
task->exec();
taskpool.setDoneStatus(task->getId());
delete task;
}
if (m_terminate) break;
std::this_thread::yield();
}
}
void DeferredTasksExecutor::worker(void * th)
{
if (th) {
DeferredTasksExecutor *that =reinterpret_cast<DeferredTasksExecutor*>(th);
that->realWorker();
}
}