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add thread affinity policy to threadpool

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there are OS_DEFAULT, UNIFORM_DISTRIBUTION and CUSTOM
With custom policy we can run thread on specified cpu
This commit is contained in:
ale_bychuk
2015-03-11 23:39:21 +03:00
parent 70eabf06e6
commit 4c1fe9ef02
4 changed files with 131 additions and 43 deletions
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36
Foundation/include/Poco/ThreadPool.h
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@@ -32,7 +32,6 @@ namespace Poco {
class Runnable;
class PooledThread;
class Foundation_API ThreadPool
/// A thread pool always keeps a number of threads running, ready
/// to accept work.
@@ -49,28 +48,39 @@ class Foundation_API ThreadPool
/// from the pool.
{
public:
typedef enum _ThreadAffinityPolicy
{
OS_DEFAULT = 0,
UNIFORM_DISTRIBUTION,
CUSTOM
} ThreadAffinityPolicy;
ThreadPool(int minCapacity = 2,
int maxCapacity = 16,
int idleTime = 60,
int stackSize = POCO_THREAD_STACK_SIZE);
int stackSize = POCO_THREAD_STACK_SIZE,
ThreadAffinityPolicy affinityPolicy = OS_DEFAULT);
/// Creates a thread pool with minCapacity threads.
/// If required, up to maxCapacity threads are created
/// a NoThreadAvailableException exception is thrown.
/// If a thread is running idle for more than idleTime seconds,
/// and more than minCapacity threads are running, the thread
/// is killed. Threads are created with given stack size.
/// Threads are created with given affinity Policy
ThreadPool(const std::string& name,
int minCapacity = 2,
int maxCapacity = 16,
int idleTime = 60,
int stackSize = POCO_THREAD_STACK_SIZE);
int stackSize = POCO_THREAD_STACK_SIZE,
ThreadAffinityPolicy affinityPolicy = OS_DEFAULT);
/// Creates a thread pool with the given name and minCapacity threads.
/// If required, up to maxCapacity threads are created
/// a NoThreadAvailableException exception is thrown.
/// If a thread is running idle for more than idleTime seconds,
/// and more than minCapacity threads are running, the thread
/// is killed. Threads are created with given stack size.
/// Threads are created with given affinity Policy
~ThreadPool();
/// Currently running threads will remain active
@@ -99,24 +109,24 @@ public:
int available() const;
/// Returns the number available threads.
void start(Runnable& target);
/// Obtains a thread and starts the target.
void start(Runnable& target, int cpu = -1);
/// Obtains a thread and starts the target on specified cpu.
/// Throws a NoThreadAvailableException if no more
/// threads are available.
void start(Runnable& target, const std::string& name);
/// Obtains a thread and starts the target.
void start(Runnable& target, const std::string& name, int cpu = -1);
/// Obtains a thread and starts the target on specified cpu.
/// Assigns the given name to the thread.
/// Throws a NoThreadAvailableException if no more
/// threads are available.
void startWithPriority(Thread::Priority priority, Runnable& target);
/// Obtains a thread, adjusts the thread's priority, and starts the target.
void startWithPriority(Thread::Priority priority, Runnable& target, int cpu = -1);
/// Obtains a thread, adjusts the thread's priority, and starts the target on specified cpu.
/// Throws a NoThreadAvailableException if no more
/// threads are available.
void startWithPriority(Thread::Priority priority, Runnable& target, const std::string& name);
/// Obtains a thread, adjusts the thread's priority, and starts the target.
void startWithPriority(Thread::Priority priority, Runnable& target, const std::string& name, int cpu = -1);
/// Obtains a thread, adjusts the thread's priority, and starts the target on specified cpu.
/// Assigns the given name to the thread.
/// Throws a NoThreadAvailableException if no more
/// threads are available.
@@ -168,7 +178,7 @@ protected:
private:
ThreadPool(const ThreadPool& pool);
ThreadPool& operator = (const ThreadPool& pool);
int getCorrectCpu(int cpu);
typedef std::vector<PooledThread*> ThreadVec;
std::string _name;
@@ -180,6 +190,8 @@ private:
int _stackSize;
ThreadVec _threads;
mutable FastMutex _mutex;
ThreadAffinityPolicy _affinityPolicy;
AtomicCounter _lastCpu;
};