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SIGINT/SIGTERM handling

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Raphael Robatsch 2021-10-22 16:39:19 +02:00
parent ca4800df44
commit 9c08a11b32
1 changed files with 16 additions and 8 deletions
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24
src/main.cpp
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@ -5,6 +5,7 @@
#include <math.h> #include <math.h>
#include <signal.h> #include <signal.h>
#include <sys/mman.h> #include <sys/mman.h>
#include <sys/signalfd.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h> #include <sys/types.h>
#include <unistd.h> #include <unistd.h>
@ -31,7 +32,7 @@ static std::string statusFifoName;
static int statusFifoFd {-1}; static int statusFifoFd {-1};
static int statusFifoWriter {-1}; static int statusFifoWriter {-1};
static QSocketNotifier *displayWriteNotifier; static QSocketNotifier *displayWriteNotifier;
static sig_atomic_t quitting {0}; static bool quitting {false};
static xdg_wm_base *xdgWmBase; static xdg_wm_base *xdgWmBase;
static const struct xdg_wm_base_listener xdgWmBaseListener = { static const struct xdg_wm_base_listener xdgWmBaseListener = {
@ -87,9 +88,7 @@ static void onStatus()
{ {
char buffer[512]; char buffer[512];
auto n = read(statusFifoFd, buffer, sizeof(buffer)); auto n = read(statusFifoFd, buffer, sizeof(buffer));
printf("read %d status bytes\n", n);
auto str = QString::fromUtf8(buffer, n); auto str = QString::fromUtf8(buffer, n);
printf("got status: %s\n", qPrintable(str));
} }
struct HandleGlobalHelper { struct HandleGlobalHelper {
@ -120,16 +119,25 @@ static const struct wl_registry_listener registry_listener = { registryHandleGlo
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
static sigset_t blockedsigs;
sigemptyset(&blockedsigs);
sigaddset(&blockedsigs, SIGINT);
sigaddset(&blockedsigs, SIGTERM);
sigprocmask(SIG_BLOCK, &blockedsigs, nullptr);
QGuiApplication app(argc, argv); QGuiApplication app(argc, argv);
QCoreApplication::setOrganizationName("tape software"); QCoreApplication::setOrganizationName("tape software");
QCoreApplication::setOrganizationDomain("tapesoftware.net"); QCoreApplication::setOrganizationDomain("tapesoftware.net");
QCoreApplication::setApplicationName("somebar"); QCoreApplication::setApplicationName("somebar");
struct sigaction exitSignal; int sfd = signalfd(-1, &blockedsigs, SFD_CLOEXEC | SFD_NONBLOCK);
memset(&exitSignal, 0, sizeof(exitSignal)); if (sfd < 0) {
exitSignal.sa_handler = [](int) {quitting = true;}; perror("signalfd");
sigaction(SIGINT, &exitSignal, nullptr); cleanup();
sigaction(SIGTERM, &exitSignal, nullptr); exit(1);
}
QSocketNotifier signalNotifier {sfd, QSocketNotifier::Read};
QObject::connect(&signalNotifier, &QSocketNotifier::activated, []() { quitting = true; });
display = wl_display_connect(NULL); display = wl_display_connect(NULL);
if (!display) { if (!display) {