If the initial value of a static variable can’t be evaluated at compile time, the compiler will perform zero-initialization. Hence, during static initialization all static variables are either const-initialized or zero-initialized. After static initialization, dynamic initialization takes place. Dynamic...
// Initialization of Special Data Member#include<iostream>usingnamespacestd;classBClass{public:BClass():i
7e: 75 13 jne 93 <__static_initialization_and_destruction_0(int, int)+0x1f> 80: 81 7d 0c ff ff 00 00 cmpl $0xffff,0xc(%ebp) 87: 75 0a jne 93 <__static_initialization_and_destruction_0(int, int)+0x1f> 89: e8 fc ff ff ff call 8a <__static_initialization_and_destruction_...
} 9Solving the "Static Initialization Order Fiasco" SIOF是存储时期为 static 的这类数据在跨 TUs 时相互依赖所导致的问题,因为不同 TUs 中的这些数据初始化顺序没有规定,引用的数据可能还没初始化。 因此全局变量、静态变量、静态成员变量都可能会引起这个问题。 看如下例子: // tu-one.cpp autoget_value(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...
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 ...
类被加载到虚拟机内存中开始,到卸载出内存为主,它的整个生命周期包括:加载(Loading)、验证(Verification)、准备(Preparation)、解析(Resolution)、初始化(Initialization)、使用(Using)和卸载(Unloading)7个阶段。其中验证、准备、解析3个阶段称为连接(Linking)(参考《深入了解Java虚拟机》)。类的生命周期如图: ...
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: ...
(__atomic_compare_exchange_n(gi, &expected, pending_bit, false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE)) { return 1; // This thread should do the initialization. } if (expected == guard_bit) { // Already initialized. return 0; } if (expected == pending_bit) { // Use acquire ...
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...