WebThe selected function runs in the same thread as the call_once invocation it was passed to. Initialization of function-local statics is guaranteed to occur only once even when called … Web2 days ago · The Biden administration is proposing strict new automobile pollution limits that would require up to two-thirds of new vehicles sold in the U.S. to be electric by 2032. That's a nearly tenfold increase over current electric vehicle sales. The proposed regulation was announced Wednesday by the Environmental Protection Agency. The regulation would …
Boost C++ Application Development Cookbook - Second Edition
WebJan 9, 2013 · If you have boost thread available you can use boost::call_once to initialise. This is threadsafe and only costs on first initialisation. You can of course also make a "Meyers" singleton creation totally thread-safe by initialising it, i.e. accessing it the first time, before you create threads that access it. WebJan 2, 2024 · Call and Text Performance. Once my service was activated, I didn’t have any issues with the service itself. Over the course of 30 days, I tried out Boost Mobile’s service by making and receiving calls as well as sending and receiving text messages. ... To contact Boost Mobile, you can visit the website or mobile app to chat or call Boost ... حارس مرمى ايراني
singleton - C++ shared_singleton - Code Review Stack Exchange
WebDec 2, 2024 · Solution 3. You could hide the function through a function pointer. static void real_function ( ) { //do stuff function = noop_function; } static void noop_function ( ) { } int (* function ) ( void) = real_function; Callers just call the function which will do the work the first time, and do nothing on any subsequent calls. WebNov 14, 2001 · boost::call_once() and "constructs" the singleton needs to throw. Nor should it, IMHO. > Making boost::call_once exception-neutral for Win32 is simple enough; but > I'm not too sure about the Posix side of things; it just depends on whether > or not the pthread_once is exception-neutral. In addition to being dj x8 音声反転