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Use libstddjb's selfpipe instead of signalfd

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Use selfpipe in our client, server, and examples.
This commit is contained in:
Quentin Smith
2012-02-26 20:50:17 -05:00
committed by Keith Winstein
parent 6d65fe9f79
commit 9a3ab83783
6 changed files with 79 additions and 93 deletions
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src/examples/termemu.cc
+14 -16
View File
@@ -35,7 +35,6 @@
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/signalfd.h>
#include <termios.h>
#include <sys/types.h>
#include <pwd.h>
@@ -51,6 +50,10 @@
#include "completeterminal.h"
#include "swrite.h"
extern "C" {
#include "selfpipe.h"
}
const size_t buf_size = 16384;
void emulate_terminal( int fd );
@@ -193,19 +196,14 @@ bool tick( Terminal::Framebuffer &state, const Terminal::Framebuffer &new_frame
void emulate_terminal( int fd )
{
/* establish WINCH fd and start listening for signal */
sigset_t signal_mask;
assert( sigemptyset( &signal_mask ) == 0 );
assert( sigaddset( &signal_mask, SIGWINCH ) == 0 );
/* stop "ignoring" WINCH signal */
assert( sigprocmask( SIG_BLOCK, &signal_mask, NULL ) == 0 );
int winch_fd = signalfd( -1, &signal_mask, 0 );
if ( winch_fd < 0 ) {
perror( "signalfd" );
int signal_fd = selfpipe_init();
if ( signal_fd < 0 ) {
perror( "selfpipe" );
return;
}
assert( selfpipe_trap(SIGWINCH) == 0 );
/* get current window size */
struct winsize window_size;
if ( ioctl( STDIN_FILENO, TIOCGWINSZ, &window_size ) < 0 ) {
@@ -231,7 +229,7 @@ void emulate_terminal( int fd )
pollfds[ 1 ].fd = fd;
pollfds[ 1 ].events = POLLIN;
pollfds[ 2 ].fd = winch_fd;
pollfds[ 2 ].fd = signal_fd;
pollfds[ 2 ].events = POLLIN;
swrite( STDOUT_FILENO, Terminal::Emulator::open().c_str() );
@@ -240,7 +238,9 @@ void emulate_terminal( int fd )
while ( 1 ) {
int active_fds = poll( pollfds, 3, poll_timeout );
if ( active_fds < 0 ) {
if ( active_fds < 0 && errno == EINTR ) {
continue;
} else if ( active_fds < 0 ) {
perror( "poll" );
break;
}
@@ -287,9 +287,7 @@ void emulate_terminal( int fd )
}
} else if ( pollfds[ 2 ].revents & POLLIN ) {
/* resize */
struct signalfd_siginfo info;
assert( read( winch_fd, &info, sizeof( info ) ) == sizeof( info ) );
assert( info.ssi_signo == SIGWINCH );
assert( selfpipe_read() == SIGWINCH );
/* get new size */
if ( ioctl( STDIN_FILENO, TIOCGWINSZ, &window_size ) < 0 ) {