Is _write in io.h a blocking call?
-
01-10-2019 - |
Pergunta
I've inherited some code which, to initialise some hardware, writes a few bytes and then waits for a return. To do this it calls the _write
function from io.h
. From my testing, it looks like it's locking up at that point. So my questions are as follows:
- Is that function a blocking function?
- Is there a way of setting a timeout?
- Is there an alternative non-blocking function I could use instead?
Solução
If you want to do async I/O on Windows then either use the Win32 APIs directly (look at docs for WriteFileEx/ReadFileEx, which contain pointers to general background on async I/O vs sync) or consider boost::asio.
Licenciado em: CC-BY-SA com atribuição
Não afiliado a StackOverflow