```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...
static int localvar = foo(); return localvar; } [tsecer@Harry localstatic]$ gcc localstatic.c -c localstatic.c:2: error: initializer element is not constant localstatic.c: In function ‘bar’: localstatic.c:5: error: initializer element is not constant [tsecer@Harry localstatic]$ g++ ...
-The value of a static variable in a function is retained between repeated function calls to the same function. -static variables are allocated on the heap -static variables do not retain its old value between function calls -The scope of static variable is local to the block in which it i...
The above function populates the array ‘arr’ with the character value passed to it as argument and then updates the ‘index’ variable so that subsequent calls to this function write on the updated index of the array. Suppose this function is being used by two threads. Now, lets assume ...
编译器错误 C3694 结构化绑定声明不能包含除“static”、“thread_local”、“auto”和 cv 限定符以外的任何说明符 编译器错误 C3695 “%$S”: 无法分解包含匿名联合或结构的类型 编译器错误 C3696 “keyword”: 无法在“%”上使用此限定符 编译器错误 C3697 “keyword”: 无法在“^”上使用此限定符 ...
cpu_features 是一个小型的开源函数库,可以在执行期间(Runtime)回报 CPU 的功能,为了维持最大的可移植性以 C89 编写,不占用内存且能在沙盒环境执行
Compiler warning (level 3, off) C4640 'instance': construction of local static object is not thread-safe Compiler warning (level 3) C4641 XML document comment has an ambiguous cross reference: Compiler warning (level 1) C4642 'class': could not import the constraints for generic parameter '...
The similar situation may occur also in Trivial Threads while setting up some important controlling object property (or variable) used in the childThread by both parent threads concurrently. For this reason, a concurrency-handling-of-one-object design has to be carefully prepared. This kind of ...
static关键词在嵌入式开发中使用频率较高,可以在一定程度上弥补局部变量和全局变量的局限性。 静态局部变量 满足局部变量的作用范围,但是拥有记忆能力,不会在每次生命周期内都初始化一次,这个作用可来实现计数功能,例如:在下面这个函数中,变量num就是静态局部变量,在第一次进入cnt函数的时候被声明,然后执行自加操作,nu...
"A variable with static storage duration cannot be captured in a lambda" #error <thread> is not supported when compiling with /clr or /clr:pure. #include is grey <Error reading characters of string> associated with <Access violation reading location> 0x80010108 - RPC_E_DISCONNECTED...