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Add timeout for getchar() in POSIX.

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Previously, the thread pooling new characters being typed was waiting
for "one more char" being typed before being able to exit.

This patch adds a timeout for getchar(). This way, event if the user do
not press his/her keyboard, the program is still able to exit.

This fixes issue:
https://github.com/GiuseppeCesarano/just-fast/issues/2
This commit is contained in:
ArthurSonzogni 2020-05-01 23:33:21 +02:00
parent 6c45d9e603
commit d8e0504ad0
1 changed files with 16 additions and 4 deletions
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20
src/ftxui/component/screen_interactive.cpp
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@ -26,6 +26,7 @@
#else #else
#include <termios.h> #include <termios.h>
#include <unistd.h> #include <unistd.h>
#include <sys/select.h>
#endif #endif
// Quick exit is missing in standard CLang headers // Quick exit is missing in standard CLang headers
@ -94,10 +95,21 @@ void Win32EventListener(std::atomic<bool>* quit,
// Read char from the terminal. // Read char from the terminal.
void UnixEventListener(std::atomic<bool>* quit, Sender<char> sender) { void UnixEventListener(std::atomic<bool>* quit, Sender<char> sender) {
// TODO(arthursonzogni): Use a timeout so that it doesn't block even if the fd_set readfds;
// user doesn't generate new chars. FD_ZERO(&readfds);
while (!*quit)
sender->Send((char)getchar()); struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 300000;
while (!*quit) {
FD_SET(STDIN_FILENO, &readfds);
if (!select(1, &readfds, NULL, NULL, &timeout))
continue;
char c = getchar();
sender->Send(c);
}
} }
#endif #endif