Synchronization Functions

Synchronization Functions

The following functions are used in synchronization.

• Asynchronous functions
• Condition variable and SRW lock functions
• Critical section functions
• Event functions
• One-time initialization functions
• Interlocked Functions
• Mutex functions
• Private namespace functions
• Semaphore functions
• Singly-linked list functions
• Synchronization barrier functions
• Timer-queue timer functions
• Wait functions
• Waitable-timer functions

Asynchronous functions

Asynchronous function	Description
APCProc	An application-defined callback function used with the QueueUserAPC function.
GetOverlappedResult	Retrieves the results of an overlapped operation.
GetOverlappedResultEx	Retrieves the results of an overlapped operation within a specified timeout interval.
QueueUserAPC	Adds a user-mode asynchronous procedure call (APC) object to the APC queue of the specified thread.

Condition variable and SRW lock functions

Condition variable and SRW lock function	Description
AcquireSRWLockExclusive	Acquires a slim reader/writer (SRW) lock in exclusive mode.
AcquireSRWLockShared	Acquires a slim reader/writer (SRW) lock in shared mode.
InitializeConditionVariable	Initializes a condition variable.
InitializeSRWLock	Initialize a slim reader/writer (SRW) lock.
ReleaseSRWLockExclusive	Releases a slim reader/writer (SRW) lock that was acquired in exclusive mode.
ReleaseSRWLockShared	Releases a slim reader/writer (SRW) lock that was acquired in shared mode.
SleepConditionVariableCS	Sleeps on the specified condition variable and releases the specified critical section as an atomic operation.
SleepConditionVariableSRW	Sleeps on the specified condition variable and releases the specified lock as an atomic operation.
TryAcquireSRWLockExclusive	Attempts to acquire a slim reader/writer (SRW) lock in exclusive mode. If the call is successful, the calling thread takes ownership of the lock.
TryAcquireSRWLockShared	Attempts to acquire a slim reader/writer (SRW) lock in shared mode. If the call is successful, the calling thread takes ownership of the lock.
WakeAllConditionVariable	Wake all threads waiting on the specified condition variable.
WakeConditionVariable	Wake a single thread waiting on the specified condition variable.

Critical section functions

Critical section function	Description
DeleteCriticalSection	Releases all resources used by an unowned critical section object.
EnterCriticalSection	Waits for ownership of the specified critical section object.
InitializeCriticalSection	Initializes a critical section object.
InitializeCriticalSectionAndSpinCount	Initializes a critical section object and sets the spin count for the critical section.
InitializeCriticalSectionEx	Initializes a critical section object with a spin count and optional flags.
LeaveCriticalSection	Releases ownership of the specified critical section object.
SetCriticalSectionSpinCount	Sets the spin count for the specified critical section.
TryEnterCriticalSection	Attempts to enter a critical section without blocking.

Event functions

Event function	Description
CreateEvent	Creates or opens a named or unnamed event object.
CreateEventEx	Creates or opens a named or unnamed event object and returns a handle to the object.
OpenEvent	Opens an existing named event object.
PulseEvent	Sets the specified event object to the signaled state and then resets it to the nonsignaled state after releasing the appropriate number of waiting threads.
ResetEvent	Sets the specified event object to the nonsignaled state.
SetEvent	Sets the specified event object to the signaled state.

One-time initialization functions

One-time initialization function	Description
InitOnceBeginInitialize	Begins one-time initialization.
InitOnceComplete	Completes one-time initialization.
InitOnceExecuteOnce	Executes the specified function successfully one time. No other threads that specify the same one-time initialization structure can execute this function while it is being executed by the current thread.
InitOnceInitialize	Initializes a one-time initialization structure.

Interlocked Functions

Interlocked function	Description
InterlockedAdd	Performs an atomic addition operation on the specified LONG values.
InterlockedAddAcquire	Performs an atomic addition operation on the specified LONG values. The operation is performed with acquire memory ordering semantics.
InterlockedAddRelease	Performs an atomic addition operation on the specified LONG values. The operation is performed with release memory ordering semantics.
InterlockedAddNoFence	Performs an atomic addition operation on the specified LONG values. The operation is performed atomically, but without using memory barriers
InterlockedAdd64	Performs an atomic addition operation on the specified LONGLONG values.
InterlockedAddAcquire64	Performs an atomic addition operation on the specified LONGLONG values. The operation is performed with acquire memory ordering semantics.
InterlockedAddRelease64	Performs an atomic addition operation on the specified LONGLONG values. The operation is performed with release memory ordering semantics.
InterlockedAddNoFence64	Performs an atomic addition operation on the specified LONGLONG values. The operation is performed atomically, but without using memory barriers
InterlockedAnd	Performs an atomic AND operation on the specified LONG values.
InterlockedAndAcquire	Performs an atomic AND operation on the specified LONG values. The operation is performed with acquire memory ordering semantics.
InterlockedAndRelease	Performs an atomic AND operation on the specified LONG values. The operation is performed with release memory ordering semantics.
InterlockedAndNoFence	Performs an atomic AND operation on the specified LONG values. The operation is performed atomically, but without using memory barriers
InterlockedAnd8	Performs an atomic AND operation on the specified char values.
InterlockedAnd8Acquire	Performs an atomic AND operation on the specified char values. The operation is performed with acquire memory ordering semantics.
InterlockedAnd8Release	Performs an atomic AND operation on the specified char values. The operation is performed with release memory ordering semantics.
InterlockedAnd8NoFence	Performs an atomic AND operation on the specified char values. The operation is performed atomically, but without using memory barriers
InterlockedAnd16	Performs an atomic AND operation on the specified SHORT values.
InterlockedAnd16Acquire	Performs an atomic AND operation on the specified SHORT values. The operation is performed with acquire memory ordering semantics.
InterlockedAnd16Release	Performs an atomic AND operation on the specified SHORT values. The operation is performed with release memory ordering semantics.
InterlockedAnd16NoFence	Performs an atomic AND operation on the specified SHORT values. The operation is performed atomically, but without using memory barriers
InterlockedAnd64	Performs an atomic AND operation on the specified LONGLONG values.
InterlockedAnd64Acquire	Performs an atomic AND operation on the specified LONGLONG values. The operation is performed with acquire memory ordering semantics.
InterlockedAnd64Release	Performs an atomic AND operation on the specified LONGLONG values. The operation is performed with release memory ordering semantics.
InterlockedAnd64NoFence	Performs an atomic AND operation on the specified LONGLONG values. The operation is performed atomically, but without using memory barriers
InterlockedBitTestAndComplement	Tests the specified bit of the specified LONG value and complements it.
InterlockedBitTestAndComplement64	Tests the specified bit of the specified LONG64 value and complements it. The operation is atomic
InterlockedBitTestAndResetAcquire	Tests the specified bit of the specified LONG value and sets it to 0. The operation is atomic, and it is performed with acquire memory ordering semantics
InterlockedBitTestAndResetRelease	Tests the specified bit of the specified LONG value and sets it to 0. The operation is atomic, and it is performed using memory release semantics
InterlockedBitTestAndSetAcquire	Tests the specified bit of the specified LONG value and sets it to 1. The operation is atomic, and it is performed with acquire memory ordering semantics
InterlockedBitTestAndSetRelease	Tests the specified bit of the specified LONG value and sets it to 1. The operation is atomic, and it is performed with release memory ordering semantics
InterlockedBitTestAndReset	Tests the specified bit of the specified LONG value and sets it to 0.
InterlockedBitTestAndReset64	Tests the specified bit of the specified LONG64 value and sets it to 0.
InterlockedBitTestAndSet	Tests the specified bit of the specified LONG value and sets it to 1.
InterlockedBitTestAndSet64	Tests the specified bit of the specified LONG64 value and sets it to 1.
InterlockedCompare64Exchange128	Performs an atomic compare-and-exchange operation on the specified values. The function compares the specified 64-bit values and exchanges with the specified 128-bit value based on the outcome of the comparison.
InterlockedCompare64ExchangeAcquire128	Performs an atomic compare-and-exchange operation on the specified values. The function compares the specified 64-bit values and exchanges with the specified 128-bit value based on the outcome of the comparison. The operation is performed with acquire memory ordering semantics.
InterlockedCompare64ExchangeRelease128	Performs an atomic compare-and-exchange operation on the specified values. The function compares the specified 64-bit values and exchanges with the specified 128-bit value based on the outcome of the comparison. The operation is performed with release memory ordering semantics.
InterlockedCompareExchange	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 32-bit values and exchanges with another 32-bit value based on the outcome of the comparison.
InterlockedCompareExchangeAcquire	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 32-bit values and exchanges with another 32-bit value based on the outcome of the comparison. The operation is performed with acquire memory ordering semantics.
InterlockedCompareExchangeRelease	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 32-bit values and exchanges with another 32-bit value based on the outcome of the comparison. The exchange is performed with release memory ordering semantics.
InterlockedCompareExchangeNoFence	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 32-bit values and exchanges with another 32-bit value based on the outcome of the comparison. The operation is performed atomically, but without using memory barriers
InterlockedCompareExchange64	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 64-bit values and exchanges with another 64-bit value based on the outcome of the comparison.
InterlockedCompareExchangeAcquire64 /trstrongp align=	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 64-bit values and exchanges with another 64-bit value based on the outcome of the comparison. The exchange is performed with acquire memory ordering semantics.
InterlockedCompareExchangeRelease64	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 64-bit values and exchanges with another 64-bit value based on the outcome of the comparison. The exchange is performed with release memory ordering semantics.
InterlockedCompareExchangeNoFence64	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 64-bit values and exchanges with another 64-bit value based on the outcome of the comparison. The operation is performed atomically, but without using memory barriers
InterlockedCompareExchange16	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 16-bit values and exchanges with another 16-bit value based on the outcome of the comparison
InterlockedCompareExchange16Acquire	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 16-bit values and exchanges with another 16-bit value based on the outcome of the comparison. The operation is performed with acquire memory ordering semantics
InterlockedCompareExchange16Release	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 16-bit values and exchanges with another 16-bit value based on the outcome of the comparison. The exchange is performed with release memory ordering semantics
InterlockedCompareExchange16NoFence	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 16-bit values and exchanges with another 16-bit value based on the outcome of the comparison. The operation is performed atomically, but without using memory barriers
InterlockedCompareExchange128	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified 128-bit values and exchanges with another 128-bit value based on the outcome of the comparison
InterlockedCompareExchangePointer	Performs an atomic compare-and-exchange operation on the specified pointer values. The function compares two specified pointer values and exchanges with another pointer value based on the outcome of the comparison.
InterlockedCompareExchangePointerAcquire	Performs an atomic compare-and-exchange operation on the specified pointer values. The function compares two specified pointer values and exchanges with another pointer value based on the outcome of the comparison. The operation is performed with acquire memory ordering semantics.
InterlockedCompareExchangePointerRelease	Performs an atomic compare-and-exchange operation on the specified pointer values. The function compares two specified pointer values and exchanges with another pointer value based on the outcome of the comparison. The operation is performed with release memory ordering semantics.
InterlockedCompareExchangePointerNoFence	Performs an atomic compare-and-exchange operation on the specified values. The function compares two specified pointer values and exchanges with another pointer value based on the outcome of the comparison. The operation is performed atomically, but without using memory barriers
InterlockedDecrement	Decrements (decreases by one) the value of the specified 32-bit variable as an atomic operation.
InterlockedDecrementAcquire	Decrements (decreases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed with acquire memory ordering semantics.
InterlockedDecrementRelease	Decrements (decreases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed with release memory ordering semantics.
InterlockedDecrementNoFence	Decrements (decreases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedDecrement16	Decrements (decreases by one) the value of the specified 16-bit variable as an atomic operation
InterlockedDecrement16Acquire	Decrements (decreases by one) the value of the specified 16-bit variable as an atomic operation. The operation is performed with acquire memory ordering semantics
InterlockedDecrement16Release	Decrements (decreases by one) the value of the specified 16-bit variable as an atomic operation. The operation is performed with release memory ordering semantics
InterlockedDecrement16NoFence	Decrements (decreases by one) the value of the specified 16-bit variable as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedDecrement64	Decrements (decreases by one) the value of the specified 64-bit variable as an atomic operation.
InterlockedDecrementAcquire64	Decrements (decreases by one) the value of the specified 64-bit variable as an atomic operation. The operation is performed with acquire memory ordering semantics.
InterlockedDecrementRelease64	Decrements (decreases by one) the value of the specified 64-bit variable as an atomic operation. The operation is performed with release memory ordering semantics.
InterlockedDecrementNoFence64	Decrements (decreases by one) the value of the specified 64-bit variable as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedExchange	Sets a 32-bit variable to the specified value as an atomic operation.
InterlockedExchangeAcquire	Sets a 32-bit variable to the specified value as an atomic operation. The operation is performed with acquire memory ordering semantics.
InterlockedExchangeNoFence	Sets a 64-bit variable to the specified value as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedExchange8	Sets an 8-bit variable to the specified value as an atomic operation
InterlockedExchange16	Sets a 16-bit variable to the specified value as an atomic operation.
InterlockedExchange16Acquire	Sets a 16-bit variable to the specified value as an atomic operation. The operation is performed using acquire memory ordering semantics
InterlockedExchange16NoFence	Sets a 16-bit variable to the specified value as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedExchange64	Sets a 64-bit variable to the specified value as an atomic operation.
InterlockedExchangeAcquire64	Sets a 32-bit variable to the specified value as an atomic operation. The operation is performed with acquire memory ordering semantics.
InterlockedExchangeNoFence64	Sets a 64-bit variable to the specified value as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedExchangePointer	Atomically exchanges a pair of pointer values.
InterlockedExchangePointerAcquire	Atomically exchanges a pair of pointer values. The operation is performed with acquire memory ordering semantics.
InterlockedExchangePointerNoFence	Atomically exchanges a pair of addresses. The operation is performed atomically, but without using memory barriers
InterlockedExchangeSubtract	Performs an atomic subtraction of two values.
InterlockedExchangeAdd	Performs an atomic addition of two 32-bit values.
InterlockedExchangeAddAcquire	Performs an atomic addition of two 32-bit values. The operation is performed with acquire memory ordering semantics.
InterlockedExchangeAddRelease	Performs an atomic addition of two 32-bit values. The operation is performed with release memory ordering semantics.
InterlockedExchangeAddNoFence	Performs an atomic addition of two 32-bit values. The operation is performed atomically, but without using memory barriers
InterlockedExchangeAdd64	Performs an atomic addition of two 64-bit values.
InterlockedExchangeAddAcquire64	Performs an atomic addition of two 64-bit values. The operation is performed with acquire memory ordering semantics.
InterlockedExchangeAddRelease64	Performs an atomic addition of two 64-bit values. The operation is performed with release memory ordering semantics.
InterlockedExchangeAddNoFence64	Performs an atomic addition of two 64-bit values. The operation is performed atomically, but without using memory barriers
InterlockedIncrement	Increments (increases by one) the value of the specified 32-bit variable as an atomic operation.
InterlockedIncrementAcquire	Increments (increases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed using acquire memory ordering semantics.
InterlockedIncrementRelease	Increments (increases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed using release memory ordering semantics.
InterlockedIncrementNoFence	Increments (increases by one) the value of the specified 32-bit variable as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedIncrement16	Increments (increases by one) the value of the specified 16-bit variable as an atomic operation
InterlockedIncrement16Acquire	Increments (increases by one) the value of the specified 16-bit variable as an atomic operation. The operation is performed using acquire memory ordering semantics
InterlockedIncrement16Release	Increments (increases by one) the value of the specified 16-bit variable as an atomic operation. The operation is performed using release memory ordering semantics
InterlockedIncrement16NoFence	Increments (increases by one) the value of the specified 16-bit variable as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedIncrement64	Increments (increases by one) the value of the specified 64-bit variable as an atomic operation.
InterlockedIncrementAcquire64	Increments (increases by one) the value of the specified 64-bit variable as an atomic operation. The operation is performed using acquire memory ordering semantics.
InterlockedIncrementRelease64	Increments (increases by one) the value of the specified 64-bit variable as an atomic operation. The operation is performed using release memory ordering semantics.
InterlockedIncrementNoFence64	Increments (increases by one) the value of the specified 64-bit variable as an atomic operation. The operation is performed atomically, but without using memory barriers
InterlockedOr	Performs an atomic OR operation on the specified LONG values.
InterlockedOrAcquire	Performs an atomic OR operation on the specified LONG values. The operation is performed with acquire memory ordering semantics.
InterlockedOrRelease	Performs an atomic OR operation on the specified LONG values. The operation is performed with release memory ordering semantics.
InterlockedOrNoFence	Performs an atomic OR operation on the specified LONG values. The operation is performed atomically, but without using memory barriers
InterlockedOr8	Performs an atomic OR operation on the specified char values.
InterlockedOr8Acquire	Performs an atomic OR operation on the specified char values. The operation is performed with acquire memory ordering semantics.
InterlockedOr8Release	Performs an atomic OR operation on the specified char values. The operation is performed with release memory ordering semantics.
InterlockedOr8NoFence	Performs an atomic OR operation on the specified char values. The operation is performed atomically, but without using memory barriers
InterlockedOr16	Performs an atomic OR operation on the specified SHORT values.
InterlockedOr16Acquire	Performs an atomic OR operation on the specified SHORT values. The operation is performed with acquire memory ordering semantics.
InterlockedOr16Release	Performs an atomic OR operation on the specified SHORT values. The operation is performed with release memory ordering semantics.
InterlockedOr16NoFence	Performs an atomic OR operation on the specified SHORT values. The operation is performed atomically, but without using memory barriers
InterlockedOr64	Performs an atomic OR operation on the specified LONGLONG values.
InterlockedOr64Acquire	Performs an atomic OR operation on the specified LONGLONG values. The operation is performed with acquire memory ordering semantics.
InterlockedOr64Release	Performs an atomic OR operation on the specified LONGLONG values. The operation is performed with release memory ordering semantics.
InterlockedOr64NoFence	Performs an atomic OR operation on the specified LONGLONG values. The operation is performed atomically, but without using memory barriers
InterlockedXor	Performs an atomic XOR operation on the specified LONG values.
InterlockedXorAcquire	Performs an atomic XOR operation on the specified LONG values. The operation is performed with acquire memory ordering semantics.
InterlockedXorRelease	Performs an atomic XOR operation on the specified LONG values. The operation is performed with release memory ordering semantics.
InterlockedXorNoFence	Performs an atomic XOR operation on the specified LONG values. The operation is performed atomically, but without using memory barriers
InterlockedXor8	Performs an atomic XOR operation on the specified char values.
InterlockedXor8Acquire	Performs an atomic XOR operation on the specified char values. The operation is performed with acquire memory ordering semantics.
InterlockedXor8Release	Performs an atomic XOR operation on the specified char values. The operation is performed with release memory ordering semantics.
InterlockedXor8NoFence	Performs an atomic XOR operation on the specified char values. The operation is performed atomically, but without using memory barriers
InterlockedXor16	Performs an atomic XOR operation on td valign=InterlockedExchangeNoFencestrong/spantd valign=toptopthe specified SHORT values.
InterlockedXor16Acquire	Performs an atomic XOR operation on the specified SHORT values. The operation is performed with acquire memory ordering semantics.
InterlockedXor16Release	Performs an atomic XOR operation on the specified SHORT values. The operation is performed with release memory ordering semantics.
InterlockedXor16NoFence	Performs an atomic XOR operation on the specified SHORT values. The operation is performed atomically, but without using memory barriers
InterlockedXor64	Performs an atomic XOR operation on the specified LONGLONG values.
InterlockedXor64Acquire	Performs an atomic XOR operation on the specified LONGLONG values. The operation is performed with acquire memory ordering semantics.
InterlockedXor64Release	Performs an atomic XOR operation on the specified LONGLONG values. The operation is performed with release memory ordering semantics.
InterlockedXor64NoFence	Performs an atomic XOR operation on the specified LONGLONG values. The operation is performed atomically, but without using memory barriers

Mutex functions

Mutex function	Description
CreateMutex	Creates or opens a named or unnamed mutex object.
CreateMutexEx	Creates or opens a named or unnamed mutex object and returns a handle to the object.
OpenMutex	Opens an existing named mutex object.
ReleaseMutex	Releases ownership of the specified mutex object.

Private namespace functions

Private namespace function	Description
AddSIDToBoundaryDescriptor	Adds a new security identifier (SID) to the specified boundary descriptor.
AddIntegrityLabelToBoundaryDescriptor	Adds a new required security identifier (SID) to the specified boundary descriptor.
ClosePrivateNamespace	Closes an open namespace handle.
CreateBoundaryDescriptor	Creates a boundary descriptor.
CreatePrivateNamespace	Creates a private namespace.
DeleteBoundaryDescriptor	Deletes the specified boundary descriptor.
OpenPrivateNamespace	Opens a private namespace.

Semaphore functions

Semaphore function	Description
CreateSemaphore	Creates or opens a named or unnamed semaphore object.
CreateSemaphoreEx	Creates or opens a named or unnamed semaphore object and returns a handle to the object.
OpenSemaphore	Opens an existing named semaphore object.
ReleaseSemaphore	Increases the count of the specified semaphore object by a specified amount.

Singly-linked list functions

Singly-linked list function	Description
InitializeSListHead	Initializes the head of a singly linked list.
InterlockedFlushSList	Flushes the entire list of items in a singly linked list.
InterlockedPopEntrySList	Removes an item from the front of a singly linked list.
InterlockedPushEntrySList	Inserts an item at the front of a singly linked list.
InterlockedPushListSList	Inserts a singly-linked list at the front of another singly linked list.
InterlockedPushListSListEx	Inserts a singly-linked list at the front of another singly linked list. Access to the lists is synchronized on a multiprocessor system. This version of the method does not use the__fastcall calling convention
QueryDepthSList	Retrieves the number of entries in the specified singly linked list.
RtlFirstEntrySList	Retrieves the first entry in a singly linked list.
RtlInitializeSListHead	Initializes the head of a singly linked list. Applications should callInitializeSListHead instead.
RtlInterlockedFlushSList	Flushes the entire list of items in a singly linked list. Applications should callInterlockedFlushSList instead.
RtlInterlockedPopEntrySList	Removes an item from the front of a singly linked list. Applications should callInterlockedPopEntrySList instead.
RtlInterlockedPushEntrySList	Inserts an item at the front of a singly linked list. Applications should callInterlockedPushEntrySList instead.
RtlQueryDepthSList	Retrieves the number of entries in the specified singly linked list. Applications should callQueryDepthSList instead.

Synchronization barrier functions

Synchronization barrier function	Description
DeleteSynchronizationBarrier	Deletes a synchronization barrier.
EnterSynchronizationBarrier	Enters a synchronization barrier and waits for the appropriate number of threads to rendezvous at the barrier.
InitializeSynchronizationBarrier	Initializes a new synchronization barrier.

Timer-queue timer functions

Timer-queue timer function	Description
ChangeTimerQueueTimer	Updates a timer-queue timer.
CreateTimerQueue	Creates a queue for timers.
CreateTimerQueueTimer	Creates a timer-queue timer.
DeleteTimerQueue	Deletes a timer queue.
DeleteTimerQueueEx	Deletes a timer queue.
DeleteTimerQueueTimer	Cancels a timer-queue timer.

Wait functions

Wait function	Description
MsgWaitForMultipleObjects	Waits until one or all of the specified objects are in the signaled state or the time-out interval elapses. The objects can include input event objects.
MsgWaitForMultipleObjectsEx	Waits until one or all of the specified objects are in the signaled state, an I/O completion routine or asynchronous procedure call (APC) is queued to the thread, or the time-out interval elapses. The array of objects can include input event objects.
RegisterWaitForSingleObject	Directs a wait thread in the thread pool to wait on the object.
SignalObjectAndWait	Signals one object and waits on another object as a single operation.
UnregisterWait	Cancels a registered wait operation.
UnregisterWaitEx	Cancels a registered wait operation.
WaitForMultipleObjects	Waits until one or all of the specified objects are in the signaled state or the time-out interval elapses.
WaitForMultipleObjectsEx	Waits until one or all of the specified objects are in the signaled state, an I/O completion routine or asynchronous procedure call (APC) is queued to the thread, or the time-out interval elapses.
WaitForSingleObject	Waits until the specified object is in the signaled state or the time-out interval elapses.
WaitForSingleObjectEx	Waits until the specified object is in the signaled state, an I/O completion routine or asynchronous procedure call (APC) is queued to the thread, or the time-out interval elapses.
WaitOnAddress	Waits for the value at the specified address to change.
WaitOrTimerCallback	An application-defined function that serves as the starting address for a timer callback or a registered wait callback.
WakeByAddressAll	Wakes all threads waiting for the value of an address to change.
WakeByAddressSingle	Wakes a thread waiting for the value of an address to change.

Waitable-timer functions

Waitable-timer function	Description
CancelWaitableTimer	Sets the specified waitable timer to the inactive state.
CreateWaitableTimer	Creates or opens a waitable timer object.
CreateWaitableTimerEx	Creates or opens a waitable timer object and returns a handle to the object.
OpenWaitableTimer	Opens an existing named waitable timer object.
SetWaitableTimer	Activates the specified waitable timer.
SetWaitableTimerEx	Activates the specified waitable timer and provides context information for the timer. .
TimerAPCProc	Application-defined timer completion routine used with the SetWaitableTimer function.