53 #ifndef _UCOMMON_THREAD_H_
54 #define _UCOMMON_THREAD_H_
56 #ifndef _UCOMMON_CPR_H_
60 #ifndef _UCOMMON_ACCESS_H_
64 #ifndef _UCOMMON_TIMERS_H_
68 #ifndef _UCOMMON_MEMORY_H_
91 #if defined(_MSCONDITIONAL_)
92 CRITICAL_SECTION mutex;
93 CONDITION_VARIABLE cond;
94 #elif defined(_MSWINDOWS_)
95 enum {SIGNAL = 0, BROADCAST = 1};
98 CRITICAL_SECTION mlock;
99 CRITICAL_SECTION mutex;
102 class __LOCAL attribute
105 pthread_condattr_t attr;
109 __LOCAL
static attribute attr;
113 pthread_mutex_t mutex;
131 bool wait(
struct timespec *timeout);
134 inline void lock(
void)
135 {EnterCriticalSection(&mutex);};
138 {LeaveCriticalSection(&mutex);};
142 void broadcast(
void);
149 {pthread_mutex_lock(&mutex);};
155 {pthread_mutex_unlock(&mutex);};
161 {pthread_cond_wait(&cond, &mutex);};
167 {pthread_cond_signal(&cond);};
173 {pthread_cond_broadcast(&cond);};
187 #if !defined(_MSWINDOWS_) && !defined(__PTH__)
194 {
return &attr.attr;};
203 static void set(
struct timespec *hires,
timeout_t timeout);
216 #if defined _MSCONDITIONAL_
217 CONDITION_VARIABLE bcast;
218 #elif !defined(_MSWINDOWS_)
219 pthread_cond_t bcast;
222 unsigned pending, waiting, sharing;
244 bool waitSignal(
struct timespec *timeout);
251 bool waitBroadcast(
struct timespec *timeout);
264 inline void lock(
void)
265 {EnterCriticalSection(&mutex);};
268 {LeaveCriticalSection(&mutex);};
270 void waitSignal(
void);
271 void waitBroadcast(
void);
284 {pthread_mutex_lock(&mutex);};
290 {pthread_mutex_unlock(&mutex);};
296 {pthread_cond_wait(&cond, &mutex);};
302 {pthread_cond_wait(&bcast, &mutex);};
309 {pthread_cond_signal(&cond);};
315 {pthread_cond_broadcast(&bcast);};
354 void limit_sharing(
unsigned max);
374 pthread_mutex_t mutex;
461 virtual void _lock(
void);
462 virtual void _unlock(
void);
504 virtual void _lock(
void);
505 virtual void _share(
void);
506 virtual void _unlock(
void);
544 void set(
const void *
object);
595 void set(
const void *
object);
636 static void indexing(
unsigned size);
645 static bool writer(
const void *
object,
timeout_t timeout = Timer::inf);
654 static bool reader(
const void *
object,
timeout_t timeout = Timer::inf);
660 static void release(
const void *
object);
728 virtual void _share(
void);
729 virtual void _unlock(
void);
731 Context *getContext(
void);
773 virtual void share(
void);
811 void set(
unsigned count);
827 unsigned operator++(
void);
829 unsigned operator--(
void);
856 unsigned count, waits, used;
858 virtual void _share(
void);
859 virtual void _unlock(
void);
886 void set(
unsigned count);
922 pthread_mutex_t mlock;
924 virtual void _lock(
void);
925 virtual void _unlock(
void);
951 guard(
const void *
object);
963 void set(
const void *
object);
994 {pthread_mutex_lock(&mlock);};
1000 {pthread_mutex_lock(&mlock);};
1006 {pthread_mutex_unlock(&mlock);};
1012 {pthread_mutex_unlock(&mlock);};
1019 {pthread_mutex_lock(lock);};
1026 {pthread_mutex_unlock(lock);};
1034 static void indexing(
unsigned size);
1041 static void protect(
const void *
pointer);
1092 {
return object == NULL;};
1098 inline operator bool()
const
1099 {
return object != NULL;};
1107 void operator=(
const void *
object);
1125 pthread_mutex_t mutex;
1258 Thread(
size_t stack = 0);
1269 virtual bool is_active(
void);
1278 void setPriority(
void);
1284 static void yield(
void);
1298 static Thread *
get(void);
1303 virtual void run(
void) = 0;
1318 virtual void exit(
void);
1323 static void init(
void);
1330 static void policy(
int polid);
1336 static void concurrency(
int level);
1344 static bool equal(pthread_t thread1, pthread_t thread2);
1350 static pthread_t
self(void);
1352 inline operator bool()
1353 {
return is_active();}
1355 inline bool operator!()
1356 {
return !is_active();}
1358 inline bool isRunning(
void)
1359 {
return is_active();}
1378 volatile bool running;
1380 volatile bool joining;
1403 virtual void run(
void) = 0;
1415 void start(
int priority = 0);
1462 virtual void run(
void) = 0;
1471 void start(
int priority = 0);
1618 {SharedPointer::replace(
object);};
1664 {LockedPointer::replace(
object);};
1707 {
return *(
static_cast<T&
>(object));};
1714 {
return static_cast<T*
>(object);};
1720 inline T*
get(void)
const
1721 {
return static_cast<T*
>(object);};
1749 {
return *(
static_cast<const T&
>(ptr->pointer));};
1756 {
return static_cast<const T*
>(ptr->pointer);};
1762 inline const T*
get(void)
const
1763 {
return static_cast<const T*
>(ptr->pointer);};
1792 {
return *(
static_cast<T&
>(auto_protect::object));};
1799 {
return static_cast<T*
>(auto_protect::object);};
1805 inline T*
get(void)
const
1806 {
return static_cast<T*
>(auto_protect::object);};
1815 {thread->
start(priority);}
1823 {thread->
start(priority);}
1878 {semaphore.
wait(timeout);}
1979 {
return lock.
modify(timeout);}
1987 {
return lock.
access(timeout);}
2010 inline bool _sync_protect_(
const void *obj)
2012 Mutex::protect(obj);
2016 inline bool _sync_release_(
const void *obj)
2022 inline bool _rw_reader_(
const void *obj)
2024 ThreadLock::reader(obj);
2028 inline bool _rw_writer_(
const void *obj)
2030 ThreadLock::writer(obj);
2034 inline bool _rw_release_(
const void *obj)
2040 #define ENTER_EXCLUSIVE \
2041 do { static pthread_mutex_t __sync__ = PTHREAD_MUTEX_INITIALIZER; \
2042 pthread_mutex_lock(&__sync__);
2044 #define LEAVE_EXCLUSIVE \
2045 pthread_mutex_unlock(&__sync__);} while(0);
2047 #define SYNC(obj) for(bool _sync_flag_ = _sync_protect_(obj); _sync_flag_; _sync_flag_ = _sync_release_(obj))
2049 #define SHARED(obj) for(bool _sync_flag_ = _rw_reader_(obj); _sync_flag_; _sync_flag_ = _rw_release_(obj))
2051 #define EXCLUSIVE(obj) for(bool _sync_flag_ = _rw_writer_(obj); _sync_flag_; _sync_flag_ = _rw_release_(obj))
The shared pointer is used to manage a singleton instance of shared object.
static const time_t reset
A value to use when resetting.
The conditional rw seperates scheduling for optizming behavior or rw locks.
void replace(T *object)
Replace existing typed object with a new one for next request.
void lock(void)
Lock the conditional's supporting mutex.
static void release(pthread_mutex_t *lock)
Convenience function to release os native mutex lock directly.
void release(void)
Release the semaphore after waiting for it.
void unlock(void)
Unlock the conditional's supporting mutex.
An exclusive locking access interface base.
void operator=(T *object)
Replace existing typed singleton object through assignment.
locked_instance()
Construct empty locked instance of typed object.
virtual void exclusive(void)
Convert read lock into exclusive (write/modify) access.
shared_instance()
Construct empty instance to reference shared typed singleton.
T &() max(T &o1, T &o2)
Convenience function to return max of two objects.
Class for resource bound memory pools between threads.
A mutex locked object smart pointer helper class.
void operator++(void)
Convenience operator to wait on a counting semaphore.
Semaphore semaphore_t
Convenience type for using counting semaphores.
An exclusive locking protocol interface base.
bool modify(timeout_t timeout=Timer::inf)
Request modify (write) access through the lock.
static void acquire(pthread_mutex_t *lock)
Convenience function to acquire os native mutex lock directly.
void start(JoinableThread *thread, int priority=0)
Convenience function to start a joinable thread.
Guard class to apply scope based access locking to objects.
locked_instance(locked_pointer< T > &pointer)
Construct locked instance of typed object from matching locked_pointer.
A portable counting semaphore class.
ObjectProtocol * object
locked object protected by locked_release
void operator=(const void *pointer)
Set guard to read lock a new object.
void operator=(T *object)
Replace existing object through assignment.
An abstract class for defining classes that operate as a thread.
T * init(T *memory)
Template function to initialize memory by invoking default constructor.
void modify(void)
Exclusive mode write thread scheduling.
void lock(void)
Lock the conditional's supporting mutex.
T * operator*()
Access shared lock typed singleton object by pointer reference.
const T * dup(void)
Acquire a shared (duplocate) reference to the typed singleton object.
void release(void)
Release acquired lock.
TimedEvent timedevent_t
Convenience type for using timed events.
Event notification to manage scheduled realtime threads.
void waitSignal(void)
Wait (block) until signalled.
Templated locked pointer for referencing locked objects of specific type.
void broadcast(void)
Signal the conditional to release all waiting threads.
void access(SharedAccess &object)
Convenience function to access (lock) shared object through it's protocol.
The conditional is a common base for other thread synchronizing classes.
void signal(void)
Signal the conditional to release one signalled thread.
void acquire(void)
Acquire mutex lock.
Auto-pointer support class for shared singleton objects.
ConditionalLock condlock_t
Convenience type for using conditional locks.
void wait(void)
Wait (block) until signalled.
shared_instance(shared_pointer< T > &pointer)
Construct shared access instance of shared typed singleton from matching shared_pointer.
void share(SharedAccess &object)
Convenience function to restore shared locking for object through it's protocol.
T & operator*() const
Reference object we are pointing to through pointer indirection.
shared_pointer()
Created shared locking for typed singleton pointer.
void signal(void)
Signal the conditional to release one waiting thread.
void access(void)
Access mode shared thread scheduling.
void operator=(const void *pointer)
Set guard to read lock a new object.
Typed smart locked pointer class.
A generic and portable implimentation of Read/Write locking.
void waitBroadcast(void)
Wait (block) until broadcast.
void unlock(ExclusiveAccess &object)
Convenience function to unlock an exclusive object through it's protocol.
ReusableObject * getNext(void)
Get next effective reusable object when iterating.
SharedPointer * ptr
Shared lock for protected singleton.
void commit(void)
Complete exclusive mode write scheduling.
void release(void)
Release access mode read scheduling.
RecursiveMutex rexlock_t
Convenience type for using recursive exclusive locks.
void commit(accesslock_t &lock)
Convenience function to commit an exclusive access lock.
void wait(void)
Wait at the barrier until the count of threads waiting is reached.
void release(void)
Release a shared lock.
A templated smart pointer instance for lock protected objects.
virtual bool is_active(void)
Check if running.
Portable recursive exclusive lock.
A general purpose smart pointer helper class.
Common base class for all objects that can be formed into a linked list.
locked_pointer()
Create an instance of a typed locked pointer.
A portable implimentation of "barrier" thread sychronization.
static pthread_condattr_t * initializer(void)
Support function for getting conditional attributes for realtime scheduling.
Private heaps, pools, and associations.
mutex_pointer()
Create a pointer with no reference.
void operator=(ObjectProtocol *object)
Replace existing object through assignment.
static void set(struct timespec *hires, timeout_t timeout)
Convert a millisecond timeout into use for high resolution conditional timers.
Guard class to apply scope based mutex locking to objects.
void unlock(void)
Unlock the conditional's supporting mutex.
void background(void)
Start execution of child context as background thread.
void modify(void)
Acquire write (exclusive modify) lock.
A detached thread object that is stand-alone.
ConditionalAccess accesslock_t
Convenience type for scheduling access.
Templated shared pointer for singleton shared objects of specific type.
bool operator!() const
Test if the pointer is not set.
Mutex mutex_t
Convenience type for using exclusive mutex locks.
Locking protocol classes for member function automatic operations.
An object pointer that uses mutex to assure thread-safe singleton use.
void broadcast(void)
Signal the conditional to release all broadcast threads.
void unlock(void)
Release acquired lock.
void replace(T *object)
Replace existing typed singleton instance with new one.
void release(SharedAccess &object)
Convenience function to unlock shared object through it's protocol.
An optimized and convertable shared lock.
unsigned long timeout_t
Typedef for millisecond timer values.
Realtime timers and timer queues.
void wait(barrier_t &barrier)
Convenience function to wait on a barrier.
T * operator*()
Create a duplicate reference counted instance of the current typed object by pointer reference...
Reusable objects for forming private heaps.
void exclusive(SharedAccess &object)
Convenience function to exclusive lock shared object through it's protocol.
virtual void exit(void)
Exit the thread context.
static void release(const void *object)
Release an arbitrary object that has been protected by a rwlock.
T * operator->() const
Reference member of object we are pointing to.
T * dup(void)
Create a duplicate reference counted instance of the current typed object.
bool access(timeout_t timeout=Timer::inf)
Request shared (read) access through the lock.
ThreadLock rwlock_t
Convenience type for using read/write locks.
static void set(struct timespec *hires, timeout_t timeout)
Convert a millisecond timeout into use for high resolution conditional timers.
virtual void run(void)=0
Abstract interface for thread context run method.
ReusableObject * next(ReusableObject *object)
Get next reusable object in the pool.
Guard class to apply scope based exclusive locking to objects.
A child thread object that may be joined by parent.
T * dup(const T &object)
Convenience function to duplicate object pointer to heap.
void start(int priority=0)
Start execution of detached context.
const T * operator->() const
Access member of shared typed singleton object this instance locks and references.
void start(int priority=0)
Start execution of child context.
A common base class for all managed objects.
void operator--(void)
Convenience operator to release a counting semaphore.
void modify(accesslock_t &lock)
Convenience function to exclusively schedule conditional access.
void wait(void)
Wait until the semphore usage count is less than the thread limit.
T & operator*() const
Extract instance of locked typed object by pointer reference.
Auto-pointer support class for locked objects.
void release(void)
Release or decrease locking.
T * operator->() const
Access member of instance of locked typed object by member reference.
void acquire(mutex_t &mutex)
Convenience function to acquire a mutex.
barrier barrier_t
Convenience type for using thread barriers.
Generic non-recursive exclusive lock class.
void lock(void)
Acquire mutex lock.
mutex_pointer(T *object)
Create a pointer with a reference to a heap object.
Generic smart pointer class.
void access(void)
Acquire access (shared read) lock.
virtual void share(void)
Return an exclusive access lock back to share mode.
void operator=(void *pointer)
Set guard to mutex lock a new object.
void commit(void)
Commit changes / release a modify lock.
virtual void _share(void)=0
Access interface to share lock the object.
void lock(void)
Acquire or increase locking.
void lock(ExclusiveAccess &object)
Convenience function to exclusively lock an object through it's protocol.
Timer class to use when scheduling realtime events.
A templated smart pointer instance for shared singleton typed objects.
static void sync(Timer &timer)
Sleep current thread until the specified timer expires.
const T & operator*() const
Access shared typed singleton object this instance locks and references.