tm unifi

cluster's machine. The first container becomes a TM. Register to ZK.SM found TM. To connect, to send a heartbeat.When all SM is connected, the TM starts Spout/bolt to a different containers. This is called the physical plan. When finished, SM gets all the plans from the TM. Mutual discovery. Then SM connects to each o

The number of Linux CPUs is judged by/proc/cpuinfo.Same Physical ID: determines a physical processorIf "siblings" and "CPU cores" are consistent, hyper-threading is not supported, or hyper-threading is not open.If "siblings" is twice Times "CPU cores", then hyper-Threading is supported and Hyper-threading is turned on.In fact, just#include Long num = sysconf (_SC_NPROCESSORS_ONLN);You can get the current number of CPUs ...Basis of judgment:1. CPUs with the same core ID are Hyper-threading of the

" # include "Datetime.h" int getdate (Datetype *d) { long ti; struct TM *TM; Time (ti); Tm=localtime (ti); d->year=tm->tm_year+1900; d->mon=tm->tm_mon+1; d->day=tm->tm_mday; } In the GETDATE func

Type description of the timeTimeTimeTime ：日历时间。1970年1月1日0点到此时的秒数。Time acquisition functiontime_t time (time_t *t);Function Description: This function returns the number of seconds that have elapsed since January 1, 1970 00:00 00 seconds. If time_t *timer a non-null pointer, the function also saves the return value to the memory pointed to by the timer pointer.Return value: Success returns the number of seconds, Failure returns ((time_t)-1) value, and the reason for the error is stored in errno.T

In fact, as long as #include Long num = sysconf (_SC_NPROCESSORS_ONLN); You can get the current number of CPUs ... Judge the basis:1. CPUs with the same core ID are the same core hyper-threading.2. CPUs with the same physical ID are the same CPU-encapsulated threads or cores. English version:1.Physical ID and core ID are not necessarily consecutive but they unique. Any CPUs with the same core ID are hyperthreads in the same core.2.Any CPU with the same physical ID are threads or cores in the

Although I used to see a lot of descriptions of the Oracle lock mechanism on the Internet, I always felt that there was something wrong with it, so it took a little time to refer to Tom Tyke's "Oracle 9I/10G/11G Programming Art" to sort out the knowledge about Oracle locks.Disclaimer: This article belongs to personal reading, content does not guarantee 100% correct.One, the type of lock for the Oracle database: Depending on the object being protected, the Oracle database lock can be divided into

Coordinated Universal time (UTC): Coordinated worlds, also known as World standard Times, is known as Greenwich Mean Time (Greenwich Mean time,gmt). For example, the time difference between the Chinese mainland and UTC is +8, which is utc+8. The United States is UTC-5.Epoch (epoch) is defined as 0:00 midnight of January 1, 1970 of the Coordinated Universal Time (also UTC or Greenwich Mean Time or GMT).Calendar time is the number of seconds elapsed since the epoch.time_t(i.e. long) #ifndef _time_

does not see the data that was submitted during execution.Transactional-level read consistency ensures that all query consistency in a transaction is guaranteed. In this case, the statements in each transaction look at the data from the same point in time, which is when the transaction begins. It avoids the occurrence of non-repeatable reads and Phantom reads.Five. Type of lockDepending on the object being protected, the Oracle database lock can be divided into the following categories: DML loc

is better than that of localtime_r. _Check_return_wat_ static __inline errno_t __CRTDECL localtime_s( _Out_ struct tm* const _Tm, _In_ time_t const* const _Time ) { return _localtime64_s(_Tm, _Time); } Errno_t is obviously more accurate than struct tm * in semantic judgment, but from the perspective

proxy topic role (Added log function) // The proxy class implements the same interface public class LogProxy implements TicketManager {TicketManager ticketManager; // reference public LogProxy (TicketManager ticketManager) {this. ticketManager = ticketManager;} @ Override public void soldTicket () {ticketManager. soldTicket (); log (); // post enhancement} @ Override public void changeTicket () {ticketManager. changeTicket (); log () ;}@ Override public void returnTicket () {ticketManager. retu

millisecond-level time after the system starts. Divide the time by CLOCKS_PER_SEC and replace it with the standard c function.Clock_t clock (void ); # Include Clock_t t = clock ();Long sec = t/CLOCKS_PER_SEC;It records the clock cycle, and the implementation does not seem very accurate and requires experimental verification; 4# Include # Include Using namespace std;Int main (){Time_t begin, end; Double duration;Begin = clock ();// Add your code hereEnd = clock (); Duration = double (end-begin)/

Longm=Phi (M); //and then split the M Long Longprm[ +],prmcnt[ +]; intPcnt=0; memset (prmcnt,0,sizeof(prmcnt)); Long LongTM =m; for(Long LongI=2; i*i) { if(tm%i==0) {prm[pcnt]=i; while(tm%i==0) {prmcnt[pcnt]++; TM/=i; } pcnt++; } } if(tm!=1) {prm[pcnt]=TM