iOS : NSCondition Lock Example

iOS : NSCondition Lock Example

-(sqlite3 *) getConnection
{
	@try
	{
		[connMutex lock];

		while (bInUse == YES) 
		{
			[connMutex wait];
		}

		bInUse = YES;
		return _database;
	}
	@catch(NSException *e)
	{
		return NULL;
	}
	@finally
	{
		[connMutex unlock];
	}
	return NULL;
}

-(void) releaseConnection
{
	@try
	{
		[connMutex lock];

		if(bInUse == YES)
		{
			bInUse = NO;
			[connMutex signal];
		}
	}
	@catch(NSException *e)
	{
		return;
	}
	@finally
	{
		[connMutex unlock];
	}
}