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threadpool: allow constructing an object, and misc tweaks

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use unsigned int to avoid having to range check negative numbers,
use const where possible, don't needlessly create empty objects,
use std::move where possible
This commit is contained in:
moneromooo-monero 2018-04-23 18:53:38 +01:00
parent 6b9d9f56a1
commit db55263b4c
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GPG Key ID: 686F07454D6CEFC3
2 changed files with 13 additions and 9 deletions
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8
src/common/threadpool.cpp
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@ -39,11 +39,11 @@ static __thread int depth = 0;
namespace tools namespace tools
{ {
threadpool::threadpool() : running(true), active(0) { threadpool::threadpool(unsigned int max_threads) : running(true), active(0) {
boost::thread::attributes attrs; boost::thread::attributes attrs;
attrs.set_stack_size(THREAD_STACK_SIZE); attrs.set_stack_size(THREAD_STACK_SIZE);
max = tools::get_max_concurrency(); max = max_threads ? max_threads : tools::get_max_concurrency();
size_t i = max; unsigned int i = max;
while(i--) { while(i--) {
threads.push_back(boost::thread(attrs, boost::bind(&threadpool::run, this))); threads.push_back(boost::thread(attrs, boost::bind(&threadpool::run, this)));
} }
@ -78,7 +78,7 @@ void threadpool::submit(waiter *obj, std::function<void()> f) {
} }
} }
int threadpool::get_max_concurrency() { unsigned int threadpool::get_max_concurrency() const {
return max; return max;
} }

14
src/common/threadpool.h
View File

@ -46,6 +46,9 @@ public:
static threadpool instance; static threadpool instance;
return instance; return instance;
} }
static threadpool *getNewForUnitTests(unsigned max_threads = 0) {
return new threadpool(max_threads);
}
// The waiter lets the caller know when all of its // The waiter lets the caller know when all of its
// tasks are completed. // tasks are completed.
@ -66,11 +69,12 @@ public:
// task to finish. // task to finish.
void submit(waiter *waiter, std::function<void()> f); void submit(waiter *waiter, std::function<void()> f);
int get_max_concurrency(); unsigned int get_max_concurrency() const;
~threadpool();
private: private:
threadpool(); threadpool(unsigned int max_threads = 0);
~threadpool();
typedef struct entry { typedef struct entry {
waiter *wo; waiter *wo;
std::function<void()> f; std::function<void()> f;
@ -79,8 +83,8 @@ public:
boost::condition_variable has_work; boost::condition_variable has_work;
boost::mutex mutex; boost::mutex mutex;
std::vector<boost::thread> threads; std::vector<boost::thread> threads;
int active; unsigned int active;
int max; unsigned int max;
bool running; bool running;
void run(); void run();
}; };