how to return to normal mode after windows8.1 system enters Safe mode
The specific methods are as follows:
1, press windows+r shortcut key to open the running window, or right click the bottom left corner to move to the Start menu of the pattern, click to run, open the running window;
2. Enter the following code in the running window: Msconfig can
;public:pthread_mutex_t mutex;static singleton* initance ();}; singleton* Singleton::p = null;singleton* singleton::initance () {if (p = = NULL) {pthread_mutex_lock (mutex); if (p== NULL) p = new Singleton ();p Thread_mutex_unlock (mutex);} return p;}
Method 2: Lazy implementation of internal static variables
This method is also very easy to implement, in the instance function to define a static instance, can also be guaranteed to have a unique instance, on return only need to retu
!
Class Singleton
{
protected:
Singleton ()
{}
private:
static singleton* p;
Public:
static singleton* initance ();
singleton* Singleton::p = new Singleton;
singleton* singleton::initance ()
{return
p;
}
Is it particularly simple?
Do you think it is easy to change time in space?
How do I write a thread-safe single case pattern during an interview? Sure how simple how to write Ah! A hungry man
object is not yet completed, if the cable access code// 1 This determines that instance is not empty, but the method returns a reference to an incomplete object. Errors may be generated at this time! Another way to implement a singleton pattern (lazy) is toClass singleton{Private Singleton () {//...} private static Singleton instance = new Singleton (); public static singleton getinstance () {return instance; }}So there will be no previous problem.In addition, the singleton model also has in
Private Singleton () {} 5 Public Static ReadOnly New Singleton (); 6 } These three kinds can be easily foundThe second formulation can be changed to:1 Public classSingleton2 {3 Private volatile StaticSingleton _instance =NULL;4 Private Static ReadOnly ObjectLockhelper =New Object();5 PrivateSingleton () {}6 Public StaticSingleton CreateInstance ()7 {8 if(_instance = =NULL)9 {Ten One BOOLLockTaken =false; A Try - { -System.Threading.Monitor.Enter
Open PHP Security Mode (note that PHP5.3 will no longer have safe mode)
The Safe mode of turning PHP on or off is taking advantage of the Safe_mode option in php.ini:
The code is as follows
Copy Code
Safe_mode=on (using
Windows 7 Safe Mode entry is similar to Windows XP operation, press the F8 key before entering the Windows System splash screen, and then select Safe Mode login in the System boot menu. In safe mode, it is possible to operate in n
What is safe mode?
The so-called Safe mode is: A special mode of Windows operating system, often use the computer's friends will not feel strange, in Safe mode users can easily repair
believe that there is a part of the user to Windows Operating system security mode application is also relatively vague, below we will tell you Windows application tips for Safe mode. First, the basic knowledgeSafe Mode is Windows operating system in a special mode, often us
Win7 Safe Mode entry and WinXP is similar to the operation, method one: Power on the Windows system before entering the start screen press the F8 key; method Two: Hold down the CTRL key when you start your computer. There will be a system of multiple Operation boot menu, this time you only need to select "SafeMode", you can directly into the safe
Many friends know that by pressing the F8 key when Windows system starts, you can choose Safe Mode to enter the Windows system in the System startup option. Now many friends have already upgraded their system to Windows 8, you will find that because the WIN8 system uses a "mixed boot" (Hybrid boot), greatly improve the system startup speed, It is difficult to press the F8 key in the hundreds of millisecond
Windows 7 Safe Mode entry is similar to Windows XP operation, the boot before entering the Windows System Boot screen press F8 key, then the System boot menu, select Safe Mode login can enter.
1. Delete Stubborn documents
When you delete some files in normal Windows mode
Many friends know that by pressing the F8 key when Windows system starts, you can choose Safe Mode to enter the Windows system in the System startup option. Now many friends have already upgraded their system to Windows 8, you will find that because the WIN8 system uses a "mixed boot" (Hybrid boot), greatly improve the system startup speed, It is difficult to press the F8 key in the hundreds of millisecond
Method One, from the WIN8 system "Computer Settings-advanced boot" into Safe mode
Move the finger from the right side of the screen to the middle or press "win+i" to open Win8 's Super button (charm) and click "Change Computer Settings".
Icon: Open Win8 's Super button (charm bar), select "Change computer Settings"
Enter the Win8 "Computer Settings" interface, click "General" in the list of
Reason Analysis:
This type of problem usually occurs because the partition format is not successfully converted into MBR format, please back up the data, then use the pure installation version of the media, use the command conversion format can be resolved.
Scope of application:
ThinkPad, preloaded Win8, preloaded linux,win7
Crash diagram in Safe mode:
People who often use computers may have heard that when a computer fails, Windows provides a platform called "Safe Mode" where users can solve a lot of problems-whether it's hardware (driver) or software. But will you use this safe mode? Today we are going to show you what it really is.
first knowledge of
1. Security Mode OverviewSecurity mode is a special state of HDFs, in which the file system only accepts requests for read data, and does not accept change requests such as deletion and modification, which is a protection mechanism to ensure the security of data blocks in the cluster.When the Namenode master node is started, HDFs enters Safe
How XP enters Safe mode
Detailed Explanation:
How to enter the security mode of XP: Windows operating system after the motherboard detection, enter the system to press the F8 key (on the power-on when the F8 key), you will see the option to enter the XP Safe mode, the foll
Win7 security mode and XP are the same, in Safe mode we can delete stubborn files, killing virus, unlock Group Policy, uninstall incorrect drive, so for many computer enthusiasts friends are more practical. However, we found that there are still a lot of small white friends do not know how to enter the Safe
Add Safe Mode to the boot menu of Win 7
Because the Windows 7 boot menu uses the BCD profile, we simply add the Safe Mode menu to the BCD file. BCD file editing can be done with "Bcdtool".
1. After starting "Bcdtool", open "C:BOOTBCD", then expand to "Windows Boot Manager →windows boot loader" and click "edit → copy
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