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#include "factory.h"
#include <util/system/thread.h>
#include <util/generic/singleton.h>
using IThread = IThreadFactory::IThread;
namespace {
class TSystemThreadFactory: public IThreadFactory {
public:
class TPoolThread: public IThread {
public:
~TPoolThread() override {
if (Thr_) {
Thr_->Detach();
}
}
void DoRun(IThreadAble* func) override {
Thr_.Reset(new TThread(ThreadProc, func));
Thr_->Start();
}
void DoJoin() noexcept override {
if (!Thr_) {
return;
}
Thr_->Join();
Thr_.Destroy();
}
private:
static void* ThreadProc(void* func) {
((IThreadAble*)(func))->Execute();
return nullptr;
}
private:
THolder<TThread> Thr_;
};
inline TSystemThreadFactory() noexcept {
}
IThread* DoCreate() override {
return new TPoolThread;
}
};
class TThreadFactoryFuncObj: public IThreadFactory::IThreadAble {
public:
TThreadFactoryFuncObj(const std::function<void()>& func)
: Func(func)
{
}
void DoExecute() override {
THolder<TThreadFactoryFuncObj> self(this);
Func();
}
private:
std::function<void()> Func;
};
}
THolder<IThread> IThreadFactory::Run(std::function<void()> func) {
THolder<IThread> ret(DoCreate());
ret->Run(new ::TThreadFactoryFuncObj(func));
return ret;
}
static IThreadFactory* SystemThreadPoolImpl() {
return Singleton<TSystemThreadFactory>();
}
static IThreadFactory* systemPool = nullptr;
IThreadFactory* SystemThreadFactory() {
if (systemPool) {
return systemPool;
}
return SystemThreadPoolImpl();
}
void SetSystemThreadFactory(IThreadFactory* pool) {
systemPool = pool;
}
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