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-rw-r--r--dwl-patches/patches/hot-reload/hot-reload-0.7.patch770
1 files changed, 770 insertions, 0 deletions
diff --git a/dwl-patches/patches/hot-reload/hot-reload-0.7.patch b/dwl-patches/patches/hot-reload/hot-reload-0.7.patch
new file mode 100644
index 0000000..c8a8cce
--- /dev/null
+++ b/dwl-patches/patches/hot-reload/hot-reload-0.7.patch
@@ -0,0 +1,770 @@
+From caa1adaf02ab4f9a326761ade5d1346149bc7c59 Mon Sep 17 00:00:00 2001
+From: Sivecano <sivecano@gmail.com>
+Date: Sun, 26 Jan 2025 18:30:02 +0100
+Subject: [PATCH] redo hot-reloading in one file
+
+---
+ Makefile | 19 ++-
+ config.def.h | 5 +-
+ dwl.c | 337 ++++++++++++++++++++++++++++++++++++++++++++-------
+ util.c | 34 ++++++
+ util.h | 6 +
+ 5 files changed, 351 insertions(+), 50 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 3358bae..70d3d0f 100644
+--- a/Makefile
++++ b/Makefile
+@@ -13,13 +13,16 @@ DWLDEVCFLAGS = -g -pedantic -Wall -Wextra -Wdeclaration-after-statement \
+
+ # CFLAGS / LDFLAGS
+ PKGS = wlroots-0.18 wayland-server xkbcommon libinput $(XLIBS)
+-DWLCFLAGS = `$(PKG_CONFIG) --cflags $(PKGS)` $(DWLCPPFLAGS) $(DWLDEVCFLAGS) $(CFLAGS)
++DWLCFLAGS = `$(PKG_CONFIG) --cflags $(PKGS)` $(DWLCPPFLAGS) $(DWLDEVCFLAGS) $(CFLAGS) -fPIC -rdynamic
+ LDLIBS = `$(PKG_CONFIG) --libs $(PKGS)` -lm $(LIBS)
+
+-all: dwl
++all: dwl dwl.so
+ dwl: dwl.o util.o
+ $(CC) dwl.o util.o $(DWLCFLAGS) $(LDFLAGS) $(LDLIBS) -o $@
+-dwl.o: dwl.c client.h config.h config.mk cursor-shape-v1-protocol.h \
++dwl.o: dwl.c cursor-shape-v1-protocol.h \
++ pointer-constraints-unstable-v1-protocol.h wlr-layer-shell-unstable-v1-protocol.h \
++ wlr-output-power-management-unstable-v1-protocol.h xdg-shell-protocol.h
++dwl.so: dwl.c client.h config.h config.mk cursor-shape-v1-protocol.h \
+ pointer-constraints-unstable-v1-protocol.h wlr-layer-shell-unstable-v1-protocol.h \
+ wlr-output-power-management-unstable-v1-protocol.h xdg-shell-protocol.h
+ util.o: util.c util.h
+@@ -49,7 +52,7 @@ xdg-shell-protocol.h:
+ config.h:
+ cp config.def.h $@
+ clean:
+- rm -f dwl *.o *-protocol.h
++ rm -f dwl *.o *-protocol.h *.so
+
+ dist: clean
+ mkdir -p dwl-$(VERSION)
+@@ -63,6 +66,8 @@ install: dwl
+ mkdir -p $(DESTDIR)$(PREFIX)/bin
+ cp -f dwl $(DESTDIR)$(PREFIX)/bin
+ chmod 755 $(DESTDIR)$(PREFIX)/bin/dwl
++ mkdir -p $(DESTDIR)$(PREFIX)/lib
++ install -m 744 dwl.so $(DESTDIR)$(PREFIX)/lib
+ mkdir -p $(DESTDIR)$(MANDIR)/man1
+ cp -f dwl.1 $(DESTDIR)$(MANDIR)/man1
+ chmod 644 $(DESTDIR)$(MANDIR)/man1/dwl.1
+@@ -70,9 +75,13 @@ install: dwl
+ cp -f dwl.desktop $(DESTDIR)$(DATADIR)/wayland-sessions/dwl.desktop
+ chmod 644 $(DESTDIR)$(DATADIR)/wayland-sessions/dwl.desktop
+ uninstall:
+- rm -f $(DESTDIR)$(PREFIX)/bin/dwl $(DESTDIR)$(MANDIR)/man1/dwl.1 \
++ rm -f $(DESTDIR)$(PREFIX)/bin/dwl $(DESTDIR)$(PREFIX)/lib/dwl.so $(DESTDIR)$(MANDIR)/man1/dwl.1 \
+ $(DESTDIR)$(DATADIR)/wayland-sessions/dwl.desktop
+
+ .SUFFIXES: .c .o
+ .c.o:
+ $(CC) $(CPPFLAGS) $(DWLCFLAGS) -o $@ -c $<
++
++.SUFFIXES: .c .so
++.c.so:
++ $(CC) $(CPPFLAGS) $(DWLCFLAGS) -o $@ -shared -DHOT $<
+diff --git a/config.def.h b/config.def.h
+index 22d2171..6e3dda1 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -7,7 +7,7 @@
+ static const int sloppyfocus = 1; /* focus follows mouse */
+ static const int bypass_surface_visibility = 0; /* 1 means idle inhibitors will disable idle tracking even if it's surface isn't visible */
+ static const unsigned int borderpx = 1; /* border pixel of windows */
+-static const float rootcolor[] = COLOR(0x222222ff);
++const float rootcolor[] = COLOR(0x222222ff);
+ static const float bordercolor[] = COLOR(0x444444ff);
+ static const float focuscolor[] = COLOR(0x005577ff);
+ static const float urgentcolor[] = COLOR(0xff0000ff);
+@@ -18,7 +18,7 @@ static const float fullscreen_bg[] = {0.1f, 0.1f, 0.1f, 1.0f}; /* You ca
+ #define TAGCOUNT (9)
+
+ /* logging */
+-static int log_level = WLR_ERROR;
++int log_level = WLR_ERROR;
+
+ /* NOTE: ALWAYS keep a rule declared even if you don't use rules (e.g leave at least one example) */
+ static const Rule rules[] = {
+@@ -127,6 +127,7 @@ static const Key keys[] = {
+ /* modifier key function argument */
+ { MODKEY, XKB_KEY_p, spawn, {.v = menucmd} },
+ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Return, spawn, {.v = termcmd} },
++ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_R, reload, {0} },
+ { MODKEY, XKB_KEY_j, focusstack, {.i = +1} },
+ { MODKEY, XKB_KEY_k, focusstack, {.i = -1} },
+ { MODKEY, XKB_KEY_i, incnmaster, {.i = +1} },
+diff --git a/dwl.c b/dwl.c
+index def2562..7e059ad 100644
+--- a/dwl.c
++++ b/dwl.c
+@@ -1,6 +1,15 @@
+ /*
+ * See LICENSE file for copyright and license details.
+ */
++
++/* stuff for hot-reload */
++#define _GNU_SOURCE
++#include <dlfcn.h>
++#include <limits.h>
++#include <unistd.h>
++#include <libgen.h>
++#include <errno.h>
++
+ #include <getopt.h>
+ #include <libinput.h>
+ #include <linux/input-event-codes.h>
+@@ -67,6 +76,7 @@
+ #include <xcb/xcb_icccm.h>
+ #endif
+
++
+ #include "util.h"
+
+ /* macros */
+@@ -77,8 +87,34 @@
+ #define LENGTH(X) (sizeof X / sizeof X[0])
+ #define END(A) ((A) + LENGTH(A))
+ #define TAGMASK ((1u << TAGCOUNT) - 1)
+-#define LISTEN(E, L, H) wl_signal_add((E), ((L)->notify = (H), (L)))
+-#define LISTEN_STATIC(E, H) do { static struct wl_listener _l = {.notify = (H)}; wl_signal_add((E), &_l); } while (0)
++
++#define SYM(a) dlsym(dwl_module, #a)
++#define TSYM(T, a) ((T)SYM(a))
++#define CSYM(T, a) *(TSYM(T*, a))
++
++#define LISTEN(E, L, H) do { \
++ (L)->notify = SYM(H); \
++ listeners = append_listener((L), listeners); \
++ wl_signal_add((E), (L)); \
++ } while(0)
++
++#define LISTEN_GLOBAL(E, L) do { \
++ struct wl_listener* l = SYM(L); \
++ listeners = append_listener(l, listeners); \
++ wl_signal_add((E), l); \
++ } while (0)
++
++#define LISTEN_STATIC(E, H) do { \
++ struct wl_listener* _l = malloc(sizeof(struct wl_listener)); \
++ _l->notify = SYM(H); \
++ listeners = append_listener(_l, listeners); \
++ wl_signal_add((E), _l); \
++ } while (0)
++
++#define UNLISTEN(L) do { \
++ wl_list_remove(&(L)->link); \
++ listeners = remove_listener((L), listeners);\
++ } while (0)
+
+ /* enums */
+ enum { CurNormal, CurPressed, CurMove, CurResize }; /* cursor */
+@@ -242,6 +278,9 @@ typedef struct {
+ struct wl_listener destroy;
+ } SessionLock;
+
++#define static
++
++#ifdef HOT
+ /* function declarations */
+ static void applybounds(Client *c, struct wlr_box *bbox);
+ static void applyrules(Client *c);
+@@ -253,7 +292,18 @@ static void axisnotify(struct wl_listener *listener, void *data);
+ static void buttonpress(struct wl_listener *listener, void *data);
+ static void chvt(const Arg *arg);
+ static void checkidleinhibitor(struct wlr_surface *exclude);
++
++#undef static
++#define static extern
++#endif
++
++/* this is cold */
+ static void cleanup(void);
++
++#undef static
++#define static
++#ifdef HOT
++
+ static void cleanupmon(struct wl_listener *listener, void *data);
+ static void closemon(Monitor *m);
+ static void commitlayersurfacenotify(struct wl_listener *listener, void *data);
+@@ -321,7 +371,18 @@ static void requestdecorationmode(struct wl_listener *listener, void *data);
+ static void requeststartdrag(struct wl_listener *listener, void *data);
+ static void requestmonstate(struct wl_listener *listener, void *data);
+ static void resize(Client *c, struct wlr_box geo, int interact);
++
++#undef static
++#define static extern
++#endif
++
++/* this is cold */
+ static void run(char *startup_cmd);
++
++#ifdef HOT
++#undef static
++#define static
++
+ static void setcursor(struct wl_listener *listener, void *data);
+ static void setcursorshape(struct wl_listener *listener, void *data);
+ static void setfloating(Client *c, int floating);
+@@ -332,7 +393,18 @@ static void setmfact(const Arg *arg);
+ static void setmon(Client *c, Monitor *m, uint32_t newtags);
+ static void setpsel(struct wl_listener *listener, void *data);
+ static void setsel(struct wl_listener *listener, void *data);
++
++#undef static
++#define static extern
++#endif
++
++/* this is cold */
+ static void setup(void);
++
++#ifdef HOT
++#undef static
++#define static
++
+ static void spawn(const Arg *arg);
+ static void startdrag(struct wl_listener *listener, void *data);
+ static void tag(const Arg *arg);
+@@ -356,6 +428,16 @@ static void xytonode(double x, double y, struct wlr_surface **psurface,
+ Client **pc, LayerSurface **pl, double *nx, double *ny);
+ static void zoom(const Arg *arg);
+
++#endif
++
++#ifdef HOT
++ #undef static
++ #define static extern
++#else
++ #undef static
++ #define static
++#endif
++
+ /* variables */
+ static const char broken[] = "broken";
+ static pid_t child_pid = -1;
+@@ -400,7 +482,9 @@ static struct wlr_scene_rect *root_bg;
+ static struct wlr_session_lock_manager_v1 *session_lock_mgr;
+ static struct wlr_scene_rect *locked_bg;
+ static struct wlr_session_lock_v1 *cur_lock;
++#ifdef HOT
+ static struct wl_listener lock_listener = {.notify = locksession};
++#endif
+
+ static struct wlr_seat *seat;
+ static KeyboardGroup *kb_group;
+@@ -426,6 +510,33 @@ static struct wlr_xwayland *xwayland;
+ static xcb_atom_t netatom[NetLast];
+ #endif
+
++/* undoes the shadowing of static from above */
++#undef static
++
++/* this is where we put global hot-reload state */
++#ifdef HOT
++#define COLD extern
++#else
++#define COLD
++
++static void* load(void);
++static const char* get_module_path(void);
++
++#endif
++
++COLD void * dwl_module = NULL;
++COLD void * last_module = NULL;
++COLD struct listens* listeners = NULL;
++COLD void reload(const Arg* arg);
++
++#ifndef HOT
++static char* runpath;
++
++#endif
++
++
++#ifdef HOT
++
+ /* configuration, allows nested code to access above variables */
+ #include "config.h"
+
+@@ -673,6 +784,8 @@ checkidleinhibitor(struct wlr_surface *exclude)
+ wlr_idle_notifier_v1_set_inhibited(idle_notifier, inhibited);
+ }
+
++#endif
++
+ void
+ cleanup(void)
+ {
+@@ -687,7 +800,7 @@ cleanup(void)
+ }
+ wlr_xcursor_manager_destroy(cursor_mgr);
+
+- destroykeyboardgroup(&kb_group->destroy, NULL);
++ TSYM(void (*)(struct wl_listener*, void*), destroykeyboardgroup)(&kb_group->destroy, NULL);
+
+ /* If it's not destroyed manually it will cause a use-after-free of wlr_seat.
+ * Destroy it until it's fixed in the wlroots side */
+@@ -699,6 +812,8 @@ cleanup(void)
+ wlr_scene_node_destroy(&scene->tree.node);
+ }
+
++#ifdef HOT
++
+ void
+ cleanupmon(struct wl_listener *listener, void *data)
+ {
+@@ -712,10 +827,10 @@ cleanupmon(struct wl_listener *listener, void *data)
+ wlr_layer_surface_v1_destroy(l->layer_surface);
+ }
+
+- wl_list_remove(&m->destroy.link);
+- wl_list_remove(&m->frame.link);
++ UNLISTEN(&m->destroy);
++ UNLISTEN(&m->frame);
+ wl_list_remove(&m->link);
+- wl_list_remove(&m->request_state.link);
++ UNLISTEN(&m->request_state);
+ m->wlr_output->data = NULL;
+ wlr_output_layout_remove(output_layout, m->wlr_output);
+ wlr_scene_output_destroy(m->scene_output);
+@@ -848,7 +963,7 @@ commitpopup(struct wl_listener *listener, void *data)
+ box.x -= (type == LayerShell ? l->geom.x : c->geom.x);
+ box.y -= (type == LayerShell ? l->geom.y : c->geom.y);
+ wlr_xdg_popup_unconstrain_from_box(popup, &box);
+- wl_list_remove(&listener->link);
++ UNLISTEN(listener);
+ }
+
+ void
+@@ -1179,8 +1294,8 @@ destroydecoration(struct wl_listener *listener, void *data)
+ Client *c = wl_container_of(listener, c, destroy_decoration);
+ c->decoration = NULL;
+
+- wl_list_remove(&c->destroy_decoration.link);
+- wl_list_remove(&c->set_decoration_mode.link);
++ UNLISTEN(&c->destroy_decoration);
++ UNLISTEN(&c->set_decoration_mode);
+ }
+
+ void
+@@ -1205,9 +1320,9 @@ destroylayersurfacenotify(struct wl_listener *listener, void *data)
+ LayerSurface *l = wl_container_of(listener, l, destroy);
+
+ wl_list_remove(&l->link);
+- wl_list_remove(&l->destroy.link);
+- wl_list_remove(&l->unmap.link);
+- wl_list_remove(&l->surface_commit.link);
++ UNLISTEN(&l->destroy);
++ UNLISTEN(&l->unmap);
++ UNLISTEN(&l->surface_commit);
+ wlr_scene_node_destroy(&l->scene->node);
+ wlr_scene_node_destroy(&l->popups->node);
+ free(l);
+@@ -1226,9 +1341,9 @@ destroylock(SessionLock *lock, int unlock)
+ motionnotify(0, NULL, 0, 0, 0, 0);
+
+ destroy:
+- wl_list_remove(&lock->new_surface.link);
+- wl_list_remove(&lock->unlock.link);
+- wl_list_remove(&lock->destroy.link);
++ UNLISTEN(&lock->new_surface);
++ UNLISTEN(&lock->unlock);
++ UNLISTEN(&lock->destroy);
+
+ wlr_scene_node_destroy(&lock->scene->node);
+ cur_lock = NULL;
+@@ -1242,7 +1357,7 @@ destroylocksurface(struct wl_listener *listener, void *data)
+ struct wlr_session_lock_surface_v1 *surface, *lock_surface = m->lock_surface;
+
+ m->lock_surface = NULL;
+- wl_list_remove(&m->destroy_lock_surface.link);
++ UNLISTEN(&m->destroy_lock_surface);
+
+ if (lock_surface->surface != seat->keyboard_state.focused_surface)
+ return;
+@@ -1262,22 +1377,22 @@ destroynotify(struct wl_listener *listener, void *data)
+ {
+ /* Called when the xdg_toplevel is destroyed. */
+ Client *c = wl_container_of(listener, c, destroy);
+- wl_list_remove(&c->destroy.link);
+- wl_list_remove(&c->set_title.link);
+- wl_list_remove(&c->fullscreen.link);
++ UNLISTEN(&c->destroy);
++ UNLISTEN(&c->set_title);
++ UNLISTEN(&c->fullscreen);
+ #ifdef XWAYLAND
+ if (c->type != XDGShell) {
+- wl_list_remove(&c->activate.link);
+- wl_list_remove(&c->associate.link);
+- wl_list_remove(&c->configure.link);
+- wl_list_remove(&c->dissociate.link);
+- wl_list_remove(&c->set_hints.link);
++ UNLISTEN(&c->activate);
++ UNLISTEN(&c->associate);
++ UNLISTEN(&c->configure);
++ UNLISTEN(&c->dissociate);
++ UNLISTEN(&c->set_hints);
+ } else
+ #endif
+ {
+- wl_list_remove(&c->commit.link);
+- wl_list_remove(&c->map.link);
+- wl_list_remove(&c->unmap.link);
++ UNLISTEN(&c->commit);
++ UNLISTEN(&c->map);
++ UNLISTEN(&c->unmap);
+ }
+ free(c);
+ }
+@@ -1292,7 +1407,7 @@ destroypointerconstraint(struct wl_listener *listener, void *data)
+ active_constraint = NULL;
+ }
+
+- wl_list_remove(&pointer_constraint->destroy.link);
++ UNLISTEN(&pointer_constraint->destroy);
+ free(pointer_constraint);
+ }
+
+@@ -1306,8 +1421,8 @@ destroysessionlock(struct wl_listener *listener, void *data)
+ void
+ destroysessionmgr(struct wl_listener *listener, void *data)
+ {
+- wl_list_remove(&lock_listener.link);
+- wl_list_remove(&listener->link);
++ UNLISTEN(&lock_listener);
++ UNLISTEN(listener);
+ }
+
+ void
+@@ -1315,10 +1430,10 @@ destroykeyboardgroup(struct wl_listener *listener, void *data)
+ {
+ KeyboardGroup *group = wl_container_of(listener, group, destroy);
+ wl_event_source_remove(group->key_repeat_source);
++ UNLISTEN(&group->key);
++ UNLISTEN(&group->modifiers);
++ UNLISTEN(&group->destroy);
+ wlr_keyboard_group_destroy(group->wlr_group);
+- wl_list_remove(&group->key.link);
+- wl_list_remove(&group->modifiers.link);
+- wl_list_remove(&group->destroy.link);
+ free(group);
+ }
+
+@@ -2212,6 +2327,8 @@ resize(Client *c, struct wlr_box geo, int interact)
+ wlr_scene_subsurface_tree_set_clip(&c->scene_surface->node, &clip);
+ }
+
++#else /*HOT*/
++
+ void
+ run(char *startup_cmd)
+ {
+@@ -2251,11 +2368,11 @@ run(char *startup_cmd)
+ if (fd_set_nonblock(STDOUT_FILENO) < 0)
+ close(STDOUT_FILENO);
+
+- printstatus();
++ TSYM(void (*)(void), printstatus)();
+
+ /* At this point the outputs are initialized, choose initial selmon based on
+ * cursor position, and set default cursor image */
+- selmon = xytomon(cursor->x, cursor->y);
++ selmon = TSYM(Monitor* (*)(double x, double y), xytomon)(cursor->x, cursor->y);
+
+ /* TODO hack to get cursor to display in its initial location (100, 100)
+ * instead of (0, 0) and then jumping. still may not be fully
+@@ -2271,6 +2388,9 @@ run(char *startup_cmd)
+ wl_display_run(dpy);
+ }
+
++#endif
++#ifdef HOT
++
+ void
+ setcursor(struct wl_listener *listener, void *data)
+ {
+@@ -2428,17 +2548,19 @@ setsel(struct wl_listener *listener, void *data)
+ wlr_seat_set_selection(seat, event->source, event->serial);
+ }
+
++#else /*HOT*/
++
+ void
+ setup(void)
+ {
+ int i, sig[] = {SIGCHLD, SIGINT, SIGTERM, SIGPIPE};
+- struct sigaction sa = {.sa_flags = SA_RESTART, .sa_handler = handlesig};
++ struct sigaction sa = {.sa_flags = SA_RESTART, .sa_handler = SYM(handlesig)};
+ sigemptyset(&sa.sa_mask);
+
+ for (i = 0; i < (int)LENGTH(sig); i++)
+ sigaction(sig[i], &sa, NULL);
+
+- wlr_log_init(log_level, NULL);
++ wlr_log_init(CSYM(enum wlr_log_importance, log_level), NULL);
+
+ /* The Wayland display is managed by libwayland. It handles accepting
+ * clients from the Unix socket, manging Wayland globals, and so on. */
+@@ -2454,7 +2576,7 @@ setup(void)
+
+ /* Initialize the scene graph used to lay out windows */
+ scene = wlr_scene_create();
+- root_bg = wlr_scene_rect_create(&scene->tree, 0, 0, rootcolor);
++ root_bg = wlr_scene_rect_create(&scene->tree, 0, 0, TSYM(float*, rootcolor));
+ for (i = 0; i < NUM_LAYERS; i++)
+ layers[i] = wlr_scene_tree_create(&scene->tree);
+ drag_icon = wlr_scene_tree_create(&scene->tree);
+@@ -2550,7 +2672,7 @@ setup(void)
+ LISTEN_STATIC(&idle_inhibit_mgr->events.new_inhibitor, createidleinhibitor);
+
+ session_lock_mgr = wlr_session_lock_manager_v1_create(dpy);
+- wl_signal_add(&session_lock_mgr->events.new_lock, &lock_listener);
++ LISTEN_GLOBAL(&session_lock_mgr->events.new_lock, lock_listener);
+ LISTEN_STATIC(&session_lock_mgr->events.destroy, destroysessionmgr);
+ locked_bg = wlr_scene_rect_create(layers[LyrBlock], sgeom.width, sgeom.height,
+ (float [4]){0.1f, 0.1f, 0.1f, 1.0f});
+@@ -2620,7 +2742,7 @@ setup(void)
+ LISTEN_STATIC(&seat->events.request_start_drag, requeststartdrag);
+ LISTEN_STATIC(&seat->events.start_drag, startdrag);
+
+- kb_group = createkeyboardgroup();
++ kb_group = TSYM(KeyboardGroup *(*)(void), createkeyboardgroup)();
+ wl_list_init(&kb_group->destroy.link);
+
+ output_mgr = wlr_output_manager_v1_create(dpy);
+@@ -2647,6 +2769,9 @@ setup(void)
+ #endif
+ }
+
++#endif
++#ifdef HOT
++
+ void
+ spawn(const Arg *arg)
+ {
+@@ -3121,8 +3246,8 @@ void
+ dissociatex11(struct wl_listener *listener, void *data)
+ {
+ Client *c = wl_container_of(listener, c, dissociate);
+- wl_list_remove(&c->map.link);
+- wl_list_remove(&c->unmap.link);
++ UNLISTEN(&c->map);
++ UNLISTEN(&c->unmap);
+ }
+
+ xcb_atom_t
+@@ -3185,17 +3310,141 @@ xwaylandready(struct wl_listener *listener, void *data)
+ }
+ #endif
+
++#else /* HOT */
++void*
++load(void)
++{
++ const char* path = get_module_path();
++ char load[PATH_MAX] = "/tmp/dwl.soXXXXXX";
++ void* new;
++
++ if (!path) {
++ fprintf(stderr, "cannot find dwl.so\n");
++ }
++
++ do {
++ mktemp(load);
++ errno = 0;
++ symlink(path, load);
++ } while(errno == EEXIST);
++
++ new = dlopen(load, RTLD_NOW|RTLD_LOCAL);
++
++ unlink(load);
++ if (new == NULL)
++ fprintf(stderr, "error while loading %s: %s\n", path, dlerror());
++ else
++ printf("loaded: %s\n", path);
++
++ return new;
++}
++
++const char *
++get_module_path(void) {
++ char home[PATH_MAX];
++ strcpy(home, getenv("HOME"));
++ strcat(home, "/.local/lib");
++ const char* abspaths[] = {".", home, "/usr/share/lib", "/usr/local/lib", "/usr/local/share/lib"};
++ const char* relpaths[] = {"", "/../lib"};
++ char paths[LENGTH(abspaths) + LENGTH(relpaths)][PATH_MAX];
++ static char out[PATH_MAX] = "./";
++
++ for (size_t i = 0; i < LENGTH(abspaths); i++)
++ realpath(abspaths[i], paths[i]);
++
++ for (size_t i = 0; i < LENGTH(relpaths); i++)
++ {
++ char tmp[PATH_MAX];
++ strcpy(tmp, runpath);
++ strcat(tmp, relpaths[i]);
++ realpath(tmp, paths[LENGTH(abspaths) + i]);
++ }
++
++
++
++ for (size_t i = 0; i < LENGTH(paths); i++)
++ {
++ char tmp[PATH_MAX];
++ printf("checking path: %s\n", paths[i]);
++ strcpy(tmp, paths[i]);
++ strcat(tmp, "/dwl.so");
++ if (access(tmp, F_OK|R_OK) == 0)
++ {
++ strcpy(out, tmp);
++ return out;
++ }
++ }
++
++ return NULL;
++}
++
++void
++reload(const Arg* arg)
++{
++ char* error;
++ void* new;
++ size_t i = 0;
++
++ // deinitialize previous module
++ if (last_module) {
++ // dlclose(last_module);
++ last_module = NULL;
++ }
++
++ wlr_log(WLR_INFO, "reloading");
++
++ new = load();
++
++ if (new == NULL)
++ {
++ wlr_log(WLR_ERROR, "couldn't load new dwl module from %s", get_module_path());
++
++ if (fork() == 0)
++ execl("/bin/env", "--", "Notify-send", "-u", "low", "failed to reload dwl", NULL);
++ return;
++ }
++
++ wlr_log(WLR_DEBUG, "---------- listens ---------");
++ for(listens* a = listeners; a != NULL; a = a->next)
++ {
++ Dl_info info;
++ void* old = a->listen->notify;
++ dladdr(a->listen->notify, &info);
++ a->listen->notify = dlsym(new, info.dli_sname);
++ if ((error = dlerror()) != NULL){
++ fprintf(stderr, "reload failure: %s", error);
++ a->listen->notify = old;
++ return;
++ }
++ wlr_log(WLR_DEBUG, "replaced listener: %s", info.dli_sname);
++ i++;
++ }
++
++ wlr_log(WLR_DEBUG, "---------- done! ---------");
++ wlr_log(WLR_DEBUG, "replaced %zu listeners", i);
++
++ last_module = dwl_module;
++ dwl_module = new;
++
++ if (fork() == 0)
++ execl("/bin/env", "--", "notify-send", "-u", "low", "reloaded dwl", NULL);
++
++}
++
+ int
+ main(int argc, char *argv[])
+ {
+ char *startup_cmd = NULL;
+ int c;
+
++ runpath = dirname(argv[0]);
++ dwl_module = load();
++
+ while ((c = getopt(argc, argv, "s:hdv")) != -1) {
+ if (c == 's')
+ startup_cmd = optarg;
+ else if (c == 'd')
+- log_level = WLR_DEBUG;
++ CSYM(enum wlr_log_importance, log_level) = WLR_DEBUG;
+ else if (c == 'v')
+ die("dwl " VERSION);
+ else
+@@ -3215,3 +3464,5 @@ main(int argc, char *argv[])
+ usage:
+ die("Usage: %s [-v] [-d] [-s startup command]", argv[0]);
+ }
++
++#endif
+diff --git a/util.c b/util.c
+index 51130af..2000731 100644
+--- a/util.c
++++ b/util.c
+@@ -49,3 +49,37 @@ fd_set_nonblock(int fd) {
+
+ return 0;
+ }
++
++struct listens*
++append_listener(struct wl_listener* new, struct listens* list)
++{
++ struct listens* l = malloc(sizeof(struct listens));
++ l->listen = new;
++ l->next = list;
++ return l;
++}
++
++struct listens*
++remove_listener(struct wl_listener* l, struct listens* ls)
++{
++ struct listens* out = ls;
++ struct listens* f = NULL;
++ for(struct listens* last = NULL; ls != NULL; ls = ls->next)
++ {
++ if (ls->listen == l)
++ {
++ if (last != NULL)
++ last->next = ls->next;
++ else
++ out = ls->next;
++
++ f = ls;
++ }
++ else
++ last = ls;
++ }
++
++ free(f);
++
++ return out;
++}
+diff --git a/util.h b/util.h
+index 226980d..11aab34 100644
+--- a/util.h
++++ b/util.h
+@@ -1,5 +1,11 @@
+ /* See LICENSE.dwm file for copyright and license details. */
++typedef struct listens {
++ struct wl_listener* listen;
++ struct listens* next;
++} listens;
+
+ void die(const char *fmt, ...);
+ void *ecalloc(size_t nmemb, size_t size);
+ int fd_set_nonblock(int fd);
++struct listens* append_listener(struct wl_listener* l, struct listens* ls);
++struct listens* remove_listener(struct wl_listener* l, struct listens* ls);
+--
+2.48.1
+