#include<iostream>#include<syncstream>intmain(){std::osyncstreamsync_out(std::cout);// 创建同步输出流对象sync_out<<"Hello, ";sync_out<<"World!\n";return0;} 在上述代码中,std::osyncstream对象sync_out将输出绑定到std::cout。由于std::o
#include <syncstream> #include <iostream> #include <thread> #include <vector> #include <print> #define USE_WORKING_IMPL 1 #if USE_WORKING_IMPL void foo(unsigned threadIdx) { auto&& out = std::osyncstream{ std::cout }; for (unsigned i = 0; i < 10; ++i) { std::...
{ std::osyncstream synced_out(std::cout); // synchronized wrapper for std::cout synced_out << "Hello, "; synced_out << "World!"; synced_out << std::endl; // flush is noted, but not yet performed synced_out << "and more!\n"; } // characters are transferred and std::cout...
{ std::osyncstream sync_out(std::cout); // std::cout 的同步包装 sync_out << "Hello, "; sync_out << "World!"; sync_out << std::endl; // 注意有冲入,但仍未进行 sync_out << "and more!\n"; } // 转移字符并冲入 std::cout...
#include <syncstream> #include <iostream> int main() { { std::osyncstream bout(std::cout); std::bout << "Hello," << '\n'; // 不冲入 std::bout.emit(); // 传输字符; cout 不冲入 std::bout << "World!" << std::endl; // 提醒冲入; cout 不冲入 std::bout.emit(); /...
basic_osyncstream::rdbuf (C++20) basic_osyncstream::get_wrapped (C++20) basic_osyncstream::emit (C++20) basic_osyncstream(streambuf_type*buf,constAllocator&a); (1) explicitbasic_osyncstream(streambuf_type*buf); (2) basic_osyncstream(std::basic_ostream<CharT, Traits>&os,constAllocator...
std::osyncstreamクラス 下記の例示ソースコードでは新ヘッダ<syncstream>をincludeし、標準出力ストリームstd::coutをstd::osyncstreamでラップしています。 C++20 # include <iostream> # include <syncstream> // NEW// 複数スレッドからworker_thread関数が同時に呼び出されると仮定voidworker_thr...
<< '\n'; } // 发射 bout1 的内容 输出: Goodbye, Planet! Hello, World! 参阅 (析构函数) 销毁basic_osyncstream 并发射其内部缓冲区(公开成员函数) get_wrapped 获得被包装的 streambuf 指针(std::basic_syncbuf<CharT,Traits,Allocator> 的公开成员函数)...
std::basic_osyncstream<CharT,Traits,Allocator>:: syncbuf_type*rdbuf()constnoexcept; 返回指向底层std::basic_syncbuf的指针。 参数 示例 本节未完成 原因:暂无示例 参阅 get_wrapped 获得指向最终目标流缓冲的指针 (公开成员函数)
auto out = std::osyncstream( std::cout ); std::print(out, "Hello"); Retrieving the FILE* handle from osyncstream bypasses the synchronizations guarantees which means that this print statement is not guaranteed to be thread-safe. Expected behavior: std::print with osyncstream ...