zero initialization的变量(未初始化的静态变量和初始化为0的静态变量)保存在.bss段,不占用rom空间(就是不占用内核镜像的空间,但是在内核加载到内存时,会保留相应的空间。)。 const initialization const initialization的变量(已经初始化为非0的静态变量)保存在.data段。 // 静态
即惰性初始化（lazy initialization）。自 C++11 起，局部static变量的初始化是线程安全的，保证多个线程...
// Initialization of Special Data Member#include<iostream>usingnamespacestd;classBClass{public:BClass():i
```c // The IA64/generic ABI uses the first byte of the guard variable. // The ARM EABI uses the least significant bit. // Thread-safe static local initialization support. #ifdef __GTHREADS namespace { // static_mutex is a single mutex controlling all static initializations. // This...
链接https://pabloariasal.github.io/2020/01/02/static-variable-initialization/ C++ - Initialization of Static Variables 02 Jan 2020 onC++ Today is the last day of the year. I’m wearing my yellow underwear; it’s a new year’s tradition in this part of the world. People say it shall ...
链接https://pabloariasal.github.io/2020/01/02/static-variable-initialization/ C++ - Initialization of Static Variables 02 Jan 2020 onC++ Today is the last day of the year. I’m wearing my yellow underwear; it’s a new year’s tradition in this part of the world. People say it shall ...
All other threads are blocked until the // initialization completes or fails due to an exception. int const Uninitialized = 0; int const BeingInitialized = -1; int const EpochStart = INT_MIN; extern "C" { int _Init_global_epoch = EpochStart; __declspec(thread) int _Init_thread_epoch ...
return 1; // This thread should do the initialization. } if (expected == guard_bit) { // Already initialized. return 0; } if (expected == pending_bit) { // Use acquire here. int newv = expected | waiting_bit; // 0x10100 ...
在这里有个static initialization和static deinitialization,前者意义大家都知道,后者则是去初始化指的是在应用之前被别的代码给析构了,导致我们用的这个静态量没有初始化,这个是很致命的,尤其在静态指针中,表现的更为明显。 当然static这个关键字也并非一无是处,下面的代码中的错误就可以用staic来解决: ...
Example - static initialization This example shows that you can initialize astaticfield by using anotherstaticfield that is not yet declared. The results will be undefined until you explicitly assign a value to thestaticfield. C# classTest{staticintx = y;staticinty =5;staticvoidMain(){ Console...