我想知道在以下情況下我是否確實需要事務/鎖。我可以進行3個操作可能在其中任意數量的併發(即我可以有兩個任務1運行和三個任務2運行): 任務1: select distinct count(some_id) as my_counter from table_1;
update table_2 set counter = my_counter;
任務2: insert into table_1
在wxwdigets創建線程什麼的代碼下面的代碼段是指: - 下面的事情是該項目的一部分: - Myfirm.cpp
My thread.h
Mythread.cpp
in Myfirm.cpp
the following code is not understood by me:-
BEGIN_EVENT_TABLE(MyFrm,wxFra
我一直在問以下問題,我不知道正確的答案是,它是什麼: If monitors are implemented by replacing condition variables with semaphores
(counters set to 0) with down() and up() as wait and signal, respectively,
would the monitors
你好,我有一個Java應用程序,需要操作的輸入數字來執行,併爲每個操作上運行不同的線程: //create operations to execute
Thread t[] = new Thread [n_operations];
//we create a Bank with N accounts
Bank mybank = new Bank(N);
//execute a sepa