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std::basic_ostream::flush

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< cpp‎ | io‎ | basic ostream

 
 
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Buffers
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleta)
Streams
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Streams
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Abstrações
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Cordas I / O
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String I/O
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basic_istringstream
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istrstream(obsoleta)
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streamoff
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iostream_category(C++11)
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std::basic_ostream
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
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basic_ostream::operator<<
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basic_ostream::put
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basic_ostream::tellp
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basic_ostream::flush
basic_ostream::swap(C++11)
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basic_ostream::sentry
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operator<<(std::basic_ostream)
 
basic_ostream& flush();

Writes uncommitted changes to the underlying output sequence.

If rdbuf() is a null pointer, does nothing

Otherwise, constructs a sentry object which checks the stream for errors and flushes the tie()'d output streams. If the sentry object returns false, does nothing (a partir do C++ 11)

Otherwise, calls rdbuf()->pubsync(). If the call returns -1, calls setstate(badbit).

Índice

[editar] Parâmetros

(Nenhum)
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(none)
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[editar] Valor de retorno

*this

[editar] Exceções

May throw std::ios_base::failure if exceptions()&badbit!=0.

[editar] Exemplo

#include <thread>
#include <iostream>
#include <chrono>
void f()
{
    std::cout << "Output from thread...";
    std::this_thread::sleep_for(std::chrono::seconds(2));
    std::cout << "...thread calls flush()\n";
    std::cout.flush();
}
 
int main()
{
    std::thread t1(f);
    std::this_thread::sleep_for(std::chrono::seconds(1));
    std::clog << "Output from main\n";
    t1.join();
}

Output:

Output from main
Output from thread.....thread calls flush()

[editar] Veja também

sincroniza com o dispositivo de armazenamento subjacente
Original:
synchronizes with the underlying storage device
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(of std::basic_istream função pública membro) [edit]
libera o fluxo de saída
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flushes the output stream
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(modelo de função)
saídas '\n' e libera o fluxo de saída
Original:
outputs '\n' and flushes the output stream
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(modelo de função)