From 0d14fd9136d7dbd731b02ce8501ff725f11b71cc Mon Sep 17 00:00:00 2001
From: jrun <darwinskernel@gmail.com>
Date: Thu, 5 Jan 2023 14:17:55 -0500
Subject: add systemd support (#1253)

* add systemd support
motivation for this is is proper ordering of related/bound/required
services to Hyprland (e.g. swaybg) that would need to have a compositor
ready.

this could possibly be a build-time option of course.

see also:
example/ files for example of services

Signed-off-by: Paymon MARANDI <darwinskernel@gmail.com>

* nix: add withSystemd flag

Signed-off-by: Paymon MARANDI <darwinskernel@gmail.com>
Co-authored-by: Mihai Fufezan <fufexan@protonmail.com>
Co-authored-by: Vaxerski <vaxry@vaxry.net>
---
 src/Compositor.cpp | 12 ++++++++++++
 src/main.cpp       |  9 +++++++++
 src/meson.build    |  1 +
 3 files changed, 22 insertions(+)

(limited to 'src')

diff --git a/src/Compositor.cpp b/src/Compositor.cpp
index 2c9ad503..b60d70d7 100644
--- a/src/Compositor.cpp
+++ b/src/Compositor.cpp
@@ -2,6 +2,9 @@
 #include "helpers/Splashes.hpp"
 #include <random>
 #include "debug/HyprCtl.hpp"
+#ifdef USES_SYSTEMD
+#include <systemd/sd-daemon.h> // for sd_notify
+#endif
 
 int handleCritSignal(int signo, void* data) {
     Debug::log(LOG, "Hyprland received signal %d", signo);
@@ -384,6 +387,15 @@ void CCompositor::startCompositor() {
 
     wlr_xcursor_manager_set_cursor_image(m_sWLRXCursorMgr, "left_ptr", m_sWLRCursor);
 
+#ifdef USES_SYSTEMD
+    if (sd_booted() > 0)
+        // tell systemd that we are ready so it can start other bond, following, related units
+        sd_notify(0, "READY=1");
+   else
+        Debug::log(LOG, "systemd integration is baked in but system itself is not booted à la systemd!");
+#endif
+
+
     // This blocks until we are done.
     Debug::log(LOG, "Hyprland is ready, running the event loop!");
     wl_display_run(m_sWLDisplay);
diff --git a/src/main.cpp b/src/main.cpp
index 5b56944e..7d1353ba 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,6 +4,9 @@
 #include "config/ConfigManager.hpp"
 #include "init/initHelpers.hpp"
 #include <iostream>
+#ifdef USES_SYSTEMD
+#include <systemd/sd-daemon.h> // for sd_notify
+#endif
 
 int main(int argc, char** argv) {
 
@@ -66,6 +69,12 @@ int main(int argc, char** argv) {
     // If we are here it means we got yote.
     Debug::log(LOG, "Hyprland reached the end.");
 
+#ifdef USES_SYSTEMD
+    // tell systemd it destroy bound/related units
+    if (sd_booted() > 0)
+       sd_notify(0, "STOPPING=1");
+#endif
+
     wl_display_destroy_clients(g_pCompositor->m_sWLDisplay);
 
     // kill all clients
diff --git a/src/meson.build b/src/meson.build
index a8fa7cfc..d7b1ec22 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -14,6 +14,7 @@ executable('Hyprland', src,
     dependency('xkbcommon'),
     dependency('libinput'),
     xcb_dep,
+    systemd_dep,
 
     dependency('pixman-1'),
     dependency('gl', 'opengl'),
-- 
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