89 lines
2.2 KiB
Objective-C
89 lines
2.2 KiB
Objective-C
/* Copyright (C) 2019 C. McEnroe <june@causal.agency>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#import <Cocoa/Cocoa.h>
|
|
#import <err.h>
|
|
#import <signal.h>
|
|
#import <stdlib.h>
|
|
#import <sysexits.h>
|
|
#import <unistd.h>
|
|
|
|
static volatile sig_atomic_t sleeping;
|
|
|
|
static void sigchld(int sig) {
|
|
(void)sig;
|
|
int status;
|
|
pid_t pid = wait(&status);
|
|
if (pid < 0) _exit(EX_OSERR);
|
|
if (WIFSIGNALED(status) && WTERMSIG(status) != SIGHUP) {
|
|
_exit(128 + WTERMSIG(status));
|
|
} else if (!sleeping) {
|
|
_exit(WEXITSTATUS(status));
|
|
}
|
|
}
|
|
|
|
static pid_t spawn(char *argv[]) {
|
|
pid_t pid = fork();
|
|
if (pid < 0) err(EX_OSERR, "fork");
|
|
if (pid) return pid;
|
|
execvp(argv[0], argv);
|
|
err(EX_NOINPUT, "%s", argv[0]);
|
|
}
|
|
|
|
static pid_t pid;
|
|
|
|
int main(int argc, char *argv[]) {
|
|
if (argc < 2) return EX_USAGE;
|
|
|
|
sigset_t mask;
|
|
sigemptyset(&mask);
|
|
struct sigaction action = {
|
|
.sa_handler = sigchld,
|
|
.sa_mask = mask,
|
|
.sa_flags = SA_NOCLDSTOP | SA_RESTART,
|
|
};
|
|
sigaction(SIGCHLD, &action, NULL);
|
|
|
|
pid = spawn(&argv[1]);
|
|
|
|
[
|
|
[[NSWorkspace sharedWorkspace] notificationCenter]
|
|
addObserverForName: NSWorkspaceWillSleepNotification
|
|
object: nil
|
|
queue: nil
|
|
usingBlock: ^(NSNotification *note) {
|
|
(void)note;
|
|
sleeping = 1;
|
|
int error = kill(pid, SIGHUP);
|
|
if (error) err(EX_UNAVAILABLE, "kill %d", pid);
|
|
}
|
|
];
|
|
|
|
[
|
|
[[NSWorkspace sharedWorkspace] notificationCenter]
|
|
addObserverForName: NSWorkspaceDidWakeNotification
|
|
object: nil
|
|
queue: nil
|
|
usingBlock: ^(NSNotification *note) {
|
|
(void)note;
|
|
sleeping = 0;
|
|
pid = spawn(&argv[1]);
|
|
}
|
|
];
|
|
|
|
[[NSApplication sharedApplication] run];
|
|
}
|