// We use the second byte of the guard variable to remember that we’re // in the middle of an initialization. class recursive_init: public std::exception { public: recursive_init() throw() { } virtual ~recursive_init() throw (); }; recursive_init::~recursive_init() throw() { }...
index variable 下标变量 initialization 初始化 sentinel 标志 conditional execution 条件执行 conditional test 条件测试 relational operator 关系运算符 field width 字段宽度 alignment 对齐方式 left alignment 左对齐 precision 精度 padded 填充 simple statement 简单语句 ...
一,线程的创建与终止 线程是CPU最小的执行和调度单位。多个线程共享进程的资源。 创建线程比创建进程更快,开销更小。 创建线程的方法:pthread_create、std::thread。 pthread_create:传入的线程函数只有一个参数。 std::thread:传入的线程函数可以有任意数量的参数。 因为,thread类的构造函数是一个可变参数模板,可接...
type: the type of variable that can be of any primitive data type such as int, bool, char, etc. 目前标准库默认用typedef定义了很多整型相关的原子类型(c++ 20开始对float有支持),包括atomic_bool,atomic_char,atomic_short,atomic_int,atomic_long,atomic_char8_t,atomic_uint8_t,atomic_intptr_t等等。
condition_variable condition_variable 类是同步原语,能用于阻塞一个线程,或同时阻塞多个线程,直至另一线程修改共享变量(条件)并通知 condition_variable 。 有意修改变量的线程必须 获得std::mutex (常通过 std::lock_guard ) 在保有锁时进行修改 在std::condition_variable 上执行 notify_one 或 notify_all(不...
编译器错误 C3871 “parameter”:“__declspec(guard(overflow))”仅在函数的前 64 个参数上受支持 编译器错误 C3872 “0xvalue”: 标识符中不允许使用此字符 编译器错误 C3873 “0xvalue”: 不允许将此字符作为标识符的第一个字符 编译器错误 C3874 “identifier”的返回类型应为“type1”而不是“type...
pthread_attr_getguardsize() - Get guardsize attribute pthread_attr_getschedparam() - Get scheduling parameter attributes pthread_attr_getstack() - Get stack attribute pthread_attr_getstackaddr() - Get stackaddr attribute pthread_attr_getstacksize() — Get the thread attribute stacksize obje...
uftrace is a function call graph tracer for C, C++, Rust and Python programs. It hooks into the entry and exit of each function, recording timestamps as well as the function's arguments and return values. uftrace is capable of tracing both user and kernel functions, as well as library ...
structA{A(inti); ~A(); };voidFoo(){ A{42};// warning C26444: Don't try to declare a local variable with no name (es.84).} 若要解决此问题,请将临时对象转换为本地对象。 C++ structA{A(inti); ~A(); };voidFoo(){ A guard{42};// OK.} ...
= AsyncStatus::Completed) { slim_mutex m; slim_condition_variable cv; bool completed = false; async.Completed([&](auto&&, auto&&) { { slim_lock_guard const guard(m); completed = true; } cv.notify_one(); }); slim_lock_guard guard(m); cv.wait(m, [&] { return com...