ucommon
Data Structures | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes
ucommon::Mutex Class Reference

Generic non-recursive exclusive lock class. More...

#include <thread.h>

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Data Structures

class  guard
 Guard class to apply scope based mutex locking to objects. More...

Public Member Functions

void acquire (void)
 Acquire mutex lock.
void lock (void)
 Acquire mutex lock.
 Mutex ()
 Create a mutex lock.
void release (void)
 Release acquired lock.
void unlock (void)
 Release acquired lock.
 ~Mutex ()
 Destroy mutex lock, release waiting threads.

Static Public Member Functions

static void acquire (pthread_mutex_t *lock)
 Convenience function to acquire os native mutex lock directly.
static void indexing (unsigned size)
 Specify hash table size for guard protection.
static void protect (const void *pointer)
 Specify pointer/object/resource to guard protect.
static void release (pthread_mutex_t *lock)
 Convenience function to release os native mutex lock directly.
static void release (const void *pointer)
 Specify a pointer/object/resource to release.

Protected Member Functions

virtual void _lock (void)
virtual void _unlock (void)

Protected Attributes

pthread_mutex_t mlock

Detailed Description

Generic non-recursive exclusive lock class.

This class also impliments the exclusive_lock protocol. In addition, an interface is offered to support dynamically managed mutexes which are internally pooled. These can be used to protect and serialize arbitrary access to memory and objects on demand. This offers an advantage over embedding mutexes to serialize access to individual objects since the maximum number of mutexes will never be greater than the number of actually running threads rather than the number of objects being potentially protected. The ability to hash the pointer address into an indexed table further optimizes access by reducing the chance for collisions on the primary index mutex.

Author:
David Sugar <dyfet@gnutelephony.org>

Definition at line 927 of file thread.h.


Member Function Documentation

void ucommon::Mutex::acquire ( void  ) [inline]

Acquire mutex lock.

This is a blocking operation.

Definition at line 1001 of file thread.h.

static void ucommon::Mutex::acquire ( pthread_mutex_t *  lock) [inline, static]

Convenience function to acquire os native mutex lock directly.

Parameters:
lockto acquire.

Definition at line 1026 of file thread.h.

static void ucommon::Mutex::indexing ( unsigned  size) [static]

Specify hash table size for guard protection.

The default is 1. This should be called at initialization time from the main thread of the application before any other threads are created.

Parameters:
sizeof hash table used for guarding.
void ucommon::Mutex::lock ( void  ) [inline]

Acquire mutex lock.

This is a blocking operation.

Definition at line 1007 of file thread.h.

static void ucommon::Mutex::protect ( const void *  pointer) [static]

Specify pointer/object/resource to guard protect.

This uses a dynamically managed mutex.

Parameters:
pointerto protect.
static void ucommon::Mutex::release ( pthread_mutex_t *  lock) [inline, static]

Convenience function to release os native mutex lock directly.

Parameters:
lockto release.

Definition at line 1033 of file thread.h.

static void ucommon::Mutex::release ( const void *  pointer) [static]

Specify a pointer/object/resource to release.

Parameters:
pointerto release.

The documentation for this class was generated from the following file: