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Reprinted: http://www.winu.cn/thread-78384-1-1.html The inode transformation matrix of the Max SDK and some common knowledge about the object Publisher: tomore released on: Inode is an important part in the max SDK. Almost all things need to be accessed through inode: mesh camera and so on. next I will briefly introduce various inode-related TM. (transformation matrix ). it only indicates my understanding of the Max SDK recently. hope you can advise

mechanism supporting suspend. It is executed after kernel wake-up is completed. It is mainly used to wake up devices that sleep during Early Suspend. Wake Lock: The Wake Lock is a Lock mechanism. As long as someone holds the Lock, the system cannot enter sleep and can be obtained by user-State processes and kernels. The lock can be time-out or time-out. The time-out lock will be automatically unlocked after the time expires. If no lock or time-out occurs, the kernel starts the sleep mechanism t

in order to read that information, we need to understand a bit more about lock types and the cryptically-named id1 and Id2 columns.Lock type and the id1/Id2 Columns In this case, we already know that the blocking lock is an exclusive DML lock, since we're re the ones who issued the locking statement. but most of the time, you won't be so lucky. fortunately, you can read this information from the V $ lock table with little effort. The first place to look is the type column. there are dozens of l

, cstring (buffer ));Afxmessagebox (smsg );// Accumulate the running times and save them to the initialization fileTime ++;Stime. Format ("% d", time );Writeprivateprofilestring ("program", "RunTime", stime, Spath );// Obtain the current date and save it to the initialization fileCtime TM = ctime: getcurrenttime ();Sdate. Format ("% d-% d", TM. getyear (), TM. ge

. extern char * ctime (_ const time_t * _ timer) returns the current time string extern struct tm * gmtime (_ const time_t * _ timer) and returns the current time, the time reference is UCT extern struct tm * localtime (_ const time_t * _ timer) and returns the local time. The time reference is the currently set time zone tm structure to obtain the date and time,

@ server ~] # Cat/proc/cpuinfo | grep "processor" | wc-l 4. Enable hyper-threading: [root @ server ~] # Cat/proc/cpuinfo | grep-e "cpu cores"-e "siblings" | sort | uniq cpu cores : 4siblings : 4 Assume that cpu cores = siblings indicates that it is not enabled. processor : 0vendor_id　　: GenuineIntelcpu famil　　: 6model　　　　 : 15model name　 : Intel(R) Xeon(R) CPU X5355 @ 2.66GHzstepping　　 : 7cpu MHz　　　: 2666.766cache size　: 4096 KBphysical id : 0siblings : 4core id　　 : 0

Practice: Java Virtual Machine 2 "virtual machine working mode", Java Virtual Machine Today, I started to practice Java Virtual Machine II: "virtual machine working mode ". 5 Series in total One of the actual Java virtual machines is "Heap Overflow processing" Practice: Java Virtual Machine 2 "virtual machine working mode" Java Virtual Machine 3: New Generation GC of G1" 4. Disable System. gc () for Java virtual machines ()" 5. "enable JIT compilation" Currently, Java virtual machines sup

*root, struct resource *new){unsigned long start = new->start;unsigned long end = new->end;struct resource *tmp, **p;if (end File ARCH/ARM/common/rtctime. CINT register_rtc (struct rtc_ops * OPS) {int ret =-ebusy; down ( rtc_sem); If (rtc_ops = NULL) {rtc_ops = OPS; ret = misc_register ( rtc_miscdev); If (ret = 0) create_proc_read_entry ("Driver/RTC", 0, null, rtc_read_proc, OPS);} Up ( rtc_sem ); return ret ;} File ARCH/ARM/common/rtctime. cstatic int rtc_read_proc (char * Page, char ** st

Setunhandledexceptionfilter is used to obtain the dump file when a program exception occurs to analyze the cause of the program exception. Many software programs use this method to collect exceptions, here, we only need to transmit the dump file generated by our program to the server. After the dump file is generated, it will actually be transmitted to the specified server through the network. This facilitates the development of collection of current bugs in the program. The following is a conso

Today began the actual combat Java Virtual Machine two: "Virtual machine working mode."Total of 5 Series "Heap overflow processing" in one of the actual Java virtual machines Virtual machine working mode for Java Virtual machine The three "G1 of the New generation GC" of Java Virtual machine Live Java Virtual machine Four "Disable System.GC ()" Real-time Java Virtual Machine Five "turn on JIT compilation" The current Java virtual machine supports both client and ser

in the last few days of work. C + + string comparisons. You need to do a huge amount of string equality comparisons in a single run. and the strings are 3-5 byte-length strings, where too much CPU resources are being consumed . How to quickly compare short strings, here is also a method. (Learn the Nginx string comparison)first, the idea of conversion, string comparison in CPU The instructions are byte-wise comparisons, such as "ABC" and the "Abd" whether the two strings do the same comparison.

Today began the actual combat Java Virtual Machine two: "Virtual machine working mode."Total of 5 Series actual Java Virtual machine one" heap overflow processing " actual Java Virtual machine two" virtual machine working mode " actual Java Virtual Machine three" G1 of the New generation GC " actual Java Virtual Machine four" Disable System.GC () " Practical Java Virtual Machine Five" turn on JIT compilation The current Java virtual machine supports both clie

descriptor FiledesLstat () returns information about the symbolic link, not the file information referenced by the symbolic linkUsing stat to realize the basic function of LS:#include #include #include #include #include #include #include int main (int argc, char **argv){struct STAT st;int i;struct passwd *pw;struct group *gr;struct TM *tm;Stat (argv[1], st);Switch (St.st_mode S_IFMT)//Determine what type

method to display your computer's processing unit model. #! /usr/bin/env python "" " Print the model of your processing units " "from __future__ import Print_ function with open ('/proc/cpuinfo ') as F: For line in F: # Ignore The blank line separating the information Between # details about two processing units if Line.strip (): if Line.rstrip (' n '). StartsWith (' model Name '): model_name = Line.rstrip (' n '). Split (': ') [1] print (m