} while( CAS(p->next, NULL, n) != TRUE); //while条件注释:如果没有把结点链在尾指针上,再试 CAS(Q->tail, p, n); //置尾结点 tail = n; } 我们可以看到,程序中的那个 do-while 的 Retry-Loop 中的 CAS 操作:如果 p->next 是 NULL,那么,把新结点 n 加到队尾。如果不成功,则重新再来...
"Settings" in DLL project properties and app.config file "The function evaluation requires all threads to run" while accessing music library through wmp.dll "The left-hand side of an assignment must be a variable, property or indexer". Help? "The remote server returned an error: (401) Unau...
Error while executing the script audit AD accounts that will expire in exactly “7” days no more, no less and email manager of account. Authorization Manager check failed - what can be a reason Auto Email notification with powershell Auto Run PowerShell script from WinPE Automate domain join,...
loop until you get valid values while (1) { printf("Username of the agent: "); // scanf return the number of input items successfully matched or EOF int n = scanf("%9s", usr
用do while循环替换问题4中的while循环.问题4的输出与这个问题之间可能存在什么差异? 我无法找到输出的差异,可能与否.以下是两者的代码和输出. while循环 package fordemo; import java.util.Scanner;publicclassForDemo{publicstaticvoidmain(String[] args){ System.out.println("Input a number:"); Scanner user...
defined(SKIP_LOCKING)// If *pl == LOCK_IS_FREE, it is set to LOCK_IS_TAKEN// atomically, so only 1 caller gets the lock.// If *pl == LOCK_IS_TAKEN,// the result is LOCK_IS_TAKEN, and the while loop keeps spinning.while(_InterlockedCompareExchange((long*)pl, LOCK_IS_TAKEN,...
classProgram{staticvoidMain(){stringstr1="abcdef";stringstr2="abcxyz";// Compare the first 3 charactersintresult=String.Compare(str1,0,str2,0,3);Console.WriteLine(result==0?"Substrings are equal":"Substrings are not equal");}}
问_InterlockedCompareExchange优化EN#include <stdint.h> namespace types { ...
do{ 备份旧数据; 基于旧数据构造新数据; }while(!CAS( 内存地址,备份的旧数据,新数据 )) (上图的解释:CPU去更新一个值,但如果想改的值不再是原来的值,操作就失败,因为很明显,有其它操作先改变了这个值。) 就是指当两者进行比较时,如果相等,则证明共享数据没有被修改,替换成新值,然后继续往下运行;如果不...
重新开始一个WHILE循环 N/A CONTINUE 等待指定间隔 N/A (dbms_lock.sleep) WAITFOR 循环控制 WHILE LOOP…END LOOP; --- LABEL…GOTO LABEL; FOR…END LOOP; LOOP…END LOOP; WHILE <condition> BEGIN… END LABEL…GOTO LABEL 程序注释 , -- , -- 打印输出 RDBMS...