SyncObjs unit

Synchronization objects.

The syncobjs unit implements some classes which can be used when synchronizing threads in routines or classes that are used in multiple threads at once. The TCriticalSection class is a wrapper around low-level critical section routines (semaphores or mutexes). The TEventObject class can be used to send messages between threads (also known as conditional variables in POSIX threads).

Classes and records

`ELockException`	class	Locking error exception.
`ELockRecursionException`	class	Lock recursion exception.
`ESyncObjectException`	class	Exception object used in unit syncobjs.
`IGuardian`	interface
`TCountdownEvent`	class
`TCriticalSection`	class	Critical section.
`TEventObject`	class	Event propagation object.
`TGuardian`	class
`THandleObject`	class	Class encapsulating an operating system handle.
`TInterlocked`	class
`TLockGuard`	record
`TMutex`	class
`TSemaphore`	class
`TSimpleEvent`	class	Simple, anonymous event.
`TSpinLock`	record
`TSpinWait`	record
`TSynchroObject`	class	Abstract synchronization object.

Types

`PPosixSemaphore`	type
`PSecurityAttributes`	type	Dummy type.
`TBitOffset`	type
`TCriticalSectionGuard`	type
`TEvent`	type	Alias for TEventObject.
`TEventHandle`	type	Handle type.
`THandleObjectArray`	type
`TMutexGuard`	type
`TPosixSemaphore`	type
`TSemaphoreGuard`	type
`TSpinFunction`	procedure type
`TWaitResult`	enumeration	Unix wait result.

Constants

INFINITE constant Infinite waiting time.

Uses

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.