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Full Discussion: file locking question
Top Forums UNIX for Dummies Questions & Answers file locking question Post 46927 by jsilva on Thursday 29th of January 2004 09:25:33 AM
Old 01-29-2004
Hi,

It's not an simple question, but basically yes... if you want to update a file, that file will be locked by the kernel.
 

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SbThreadAutoLock(3)						       Coin						       SbThreadAutoLock(3)

NAME
SbThreadAutoLock - Simple convenience class for locking access to a function. This class provides a simple convenience mechanism for automatically locking access to a function that is not re-entrant. SYNOPSIS
#include <Inventor/threads/SbThreadAutoLock.h> Public Member Functions SbThreadAutoLock (SbMutex *mutexptr) SbThreadAutoLock (SbThreadMutex *mutexptr) ~SbThreadAutoLock () Protected Attributes SbMutex * mutex SbThreadMutex * recmutex Detailed Description Simple convenience class for locking access to a function. This class provides a simple convenience mechanism for automatically locking access to a function that is not re-entrant. Usage example: void myfunction(void) { SbThreadAutoLock lock(aMutexPtr); // [other code] } In the class constructor, SbMutex::lock() is called on the mutex, and when the function exits (this is the convenience part) the destructor will automatically be invoked, calling SbMutex::unlock() on the same mutex. Constructor &; Destructor Documentation SbThreadAutoLock::SbThreadAutoLock (SbMutex *mutex) [inline] The constructor calls SbMutex::lock() on mutex. SbThreadAutoLock::SbThreadAutoLock (SbThreadMutex *mutex) [inline] The constructor calls SbThreadMutex::lock() on mutex. SbThreadAutoLock::~SbThreadAutoLock () [inline] The destructor calls unlock() on the mutex passed in as a parameter to the constructor. Member Data Documentation SbThreadAutoLock::recmutex [protected] This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Author Generated automatically by Doxygen for Coin from the source code. Version 3.1.3 Wed May 23 2012 SbThreadAutoLock(3)
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