This class is used to create a "named" lock entity that can be used to control access to a resource between multiple processes.
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#include <process.h>
Collaboration diagram for Lockfile:
Public Member Functions
Create a lock under a known name.
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Create a new lock object that can be used to make locks.
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Destroy the current lock and release it.
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bool
lock (const char *name)
Lock a system-wide name for this process.
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Flag if the current process has aqcuired a lock.
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Private Attributes
Detailed Description
This class is used to create a "named" lock entity that can be used to control access to a resource between multiple processes.
The posix implimentation uses a pidfile and the win32 version uses a globally visible mutex.
- Author
- David Sugar dyfet.nosp@m.@ost.nosp@m.el.co.nosp@m.m System-wide named lock
Definition at line 259 of file process.h.
Constructor & Destructor Documentation
Lockfile::Lockfile
(
const char *
name )
Create a lock under a known name.
- Parameters
-
name of system-wide lock to create.
Create a new lock object that can be used to make locks.
Lockfile::~Lockfile
(
)
inline
Destroy the current lock and release it.
Definition at line 285 of file process.h.
Member Function Documentation
bool Lockfile::isLocked
(
void
)
Flag if the current process has aqcuired a lock.
- Returns
- true if we have the lock.
bool Lockfile::lock
(
const char *
name )
Lock a system-wide name for this process.
If the lock is successful, return true. If an existing lock was already acquired, release it first.
- Returns
- true if lock successful.
- Parameters
-
name system-wide lock to use.
void Lockfile::unlock
(
void
)
Release an acquired lock.
Field Documentation
char* Lockfile::_path
private
The documentation for this class was generated from the following file: