refactor: change event_create() to a macro (#26343)

A varargs functions can never be inlined, so a macro is faster.

src/nvim/autocmd.c

@@ -2564,7 +2564,7 @@ void may_trigger_vim_suspend_resume(bool suspend)
     pending_vimresume = kTrue;
   } else if (!suspend && pending_vimresume == kTrue) {
     pending_vimresume = kNone;
-    multiqueue_put(main_loop.events, vimresume_event, 0);
+    multiqueue_put(main_loop.events, vimresume_event, NULL);
   }
 }
 

src/nvim/channel.c

@@ -244,7 +244,7 @@ void channel_decref(Channel *chan)
 {
   if (!(--chan->refcount)) {
     // delay free, so that libuv is done with the handles
-    multiqueue_put(main_loop.events, free_channel_event, 1, chan);
+    multiqueue_put(main_loop.events, free_channel_event, chan);
   }
 }
 
@@ -293,7 +293,7 @@ static void channel_destroy_early(Channel *chan)
   }
 
   // uv will keep a reference to handles until next loop tick, so delay free
-  multiqueue_put(main_loop.events, free_channel_event, 1, chan);
+  multiqueue_put(main_loop.events, free_channel_event, chan);
 }
 
 static void close_cb(Stream *stream, void *data)
@@ -657,7 +657,7 @@ static void schedule_channel_event(Channel *chan)
 {
   if (!chan->callback_scheduled) {
     if (!chan->callback_busy) {
-      multiqueue_put(chan->events, on_channel_event, 1, chan);
+      multiqueue_put(chan->events, on_channel_event, chan);
       channel_incref(chan);
     }
     chan->callback_scheduled = true;
@@ -682,7 +682,7 @@ static void on_channel_event(void **args)
   chan->callback_busy = false;
   if (chan->callback_scheduled) {
     // further callback was deferred to avoid recursion.
-    multiqueue_put(chan->events, on_channel_event, 1, chan);
+    multiqueue_put(chan->events, on_channel_event, chan);
     channel_incref(chan);
   }
 
@@ -812,7 +812,7 @@ static inline void term_delayed_free(void **argv)
 {
   Channel *chan = argv[0];
   if (chan->stream.proc.in.pending_reqs || chan->stream.proc.out.pending_reqs) {
-    multiqueue_put(chan->events, term_delayed_free, 1, chan);
+    multiqueue_put(chan->events, term_delayed_free, chan);
     return;
   }
 
@@ -826,7 +826,7 @@ static void term_close(void *data)
 {
   Channel *chan = data;
   process_stop(&chan->stream.proc);
-  multiqueue_put(chan->events, term_delayed_free, 1, data);
+  multiqueue_put(chan->events, term_delayed_free, data);
 }
 
 void channel_info_changed(Channel *chan, bool new_chan)
@@ -834,7 +834,7 @@ void channel_info_changed(Channel *chan, bool new_chan)
   event_T event = new_chan ? EVENT_CHANOPEN : EVENT_CHANINFO;
   if (has_event(event)) {
     channel_incref(chan);
-    multiqueue_put(main_loop.events, set_info_event, 2, chan, event);
+    multiqueue_put(main_loop.events, set_info_event, chan, (void *)(intptr_t)event);
   }
 }
 

src/nvim/event/defs.h

@@ -6,29 +6,9 @@
 enum { EVENT_HANDLER_MAX_ARGC = 10, };
 
 typedef void (*argv_callback)(void **argv);
-typedef struct message {
+typedef struct {
   argv_callback handler;
   void *argv[EVENT_HANDLER_MAX_ARGC];
 } Event;
 
-#define VA_EVENT_INIT(event, h, a) \
+#define event_create(cb, ...) ((Event){ .handler = cb, .argv = { __VA_ARGS__ } })
-  do { \
-    assert(a <= EVENT_HANDLER_MAX_ARGC); \
-    (event)->handler = h; \
-    if (a) { \
-      va_list args; \
-      va_start(args, a); \
-      for (int i = 0; i < a; i++) { \
-        (event)->argv[i] = va_arg(args, void *); \
-      } \
-      va_end(args); \
-    } \
-  } while (0)
-
-static inline Event event_create(argv_callback cb, int argc, ...)
-{
-  assert(argc <= EVENT_HANDLER_MAX_ARGC);
-  Event event;
-  VA_EVENT_INIT(&event, cb, argc);
-  return event;
-}

src/nvim/event/loop.c

@@ -111,7 +111,7 @@ void loop_schedule_deferred(Loop *loop, Event event)
 {
   Event *eventp = xmalloc(sizeof(*eventp));
   *eventp = event;
-  loop_schedule_fast(loop, event_create(loop_deferred_event, 2, loop, eventp));
+  loop_schedule_fast(loop, event_create(loop_deferred_event, loop, eventp));
 }
 static void loop_deferred_event(void **argv)
 {

src/nvim/event/loop.h

@@ -44,12 +44,12 @@ typedef struct loop {
   bool closing;  ///< Set to true if loop_close() has been called
 } Loop;
 
-#define CREATE_EVENT(multiqueue, handler, argc, ...) \
+#define CREATE_EVENT(multiqueue, handler, ...) \
   do { \
     if (multiqueue) { \
-      multiqueue_put((multiqueue), (handler), argc, __VA_ARGS__); \
+      multiqueue_put((multiqueue), (handler), __VA_ARGS__); \
     } else { \
-      void *argv[argc] = { __VA_ARGS__ }; \
+      void *argv[] = { __VA_ARGS__ }; \
       (handler)(argv); \
     } \
   } while (0)

src/nvim/event/multiqueue.c

@@ -260,7 +260,7 @@ Event event_create_oneshot(Event ev, int num)
   data->event = ev;
   data->fired = false;
   data->refcount = num;
-  return event_create(multiqueue_oneshot_event, 1, data);
+  return event_create(multiqueue_oneshot_event, data);
 }
 static void multiqueue_oneshot_event(void **argv)
 {

src/nvim/event/multiqueue.h

@@ -9,7 +9,9 @@ typedef struct multiqueue MultiQueue;
 typedef void (*PutCallback)(MultiQueue *multiq, void *data);
 
 #define multiqueue_put(q, h, ...) \
-  multiqueue_put_event(q, event_create(h, __VA_ARGS__));
+  do { \
+    multiqueue_put_event(q, event_create(h, __VA_ARGS__)); \
+  } while (0)
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/multiqueue.h.generated.h"

src/nvim/event/process.c

@@ -132,7 +132,7 @@ void process_teardown(Loop *loop) FUNC_ATTR_NONNULL_ALL
     Process *proc = (*current)->data;
     if (proc->detach || proc->type == kProcessTypePty) {
       // Close handles to process without killing it.
-      CREATE_EVENT(loop->events, process_close_handles, 1, proc);
+      CREATE_EVENT(loop->events, process_close_handles, proc);
     } else {
       process_stop(proc);
     }
@@ -300,7 +300,7 @@ static void decref(Process *proc)
   }
   assert(node);
   kl_shift_at(WatcherPtr, loop->children, node);
-  CREATE_EVENT(proc->events, process_close_event, 1, proc);
+  CREATE_EVENT(proc->events, process_close_event, proc);
 }
 
 static void process_close(Process *proc)
@@ -395,7 +395,7 @@ static void process_close_handles(void **argv)
 static void exit_delay_cb(uv_timer_t *handle)
 {
   uv_timer_stop(&main_loop.exit_delay_timer);
-  multiqueue_put(main_loop.fast_events, exit_event, 1, main_loop.exit_delay_timer.data);
+  multiqueue_put(main_loop.fast_events, exit_event, main_loop.exit_delay_timer.data);
 }
 
 static void exit_event(void **argv)
@@ -420,7 +420,7 @@ static void exit_event(void **argv)
 
 void exit_from_channel(int status)
 {
-  multiqueue_put(main_loop.fast_events, exit_event, 1, status);
+  multiqueue_put(main_loop.fast_events, exit_event, (void *)(intptr_t)status);
 }
 
 static void on_process_exit(Process *proc)
@@ -438,7 +438,7 @@ static void on_process_exit(Process *proc)
   // more data directly. Instead delay the reading after the libuv loop by
   // queueing process_close_handles() as an event.
   MultiQueue *queue = proc->events ? proc->events : loop->events;
-  CREATE_EVENT(queue, process_close_handles, 1, proc);
+  CREATE_EVENT(queue, process_close_handles, proc);
 }
 
 static void on_process_stream_close(Stream *stream, void *data)

src/nvim/event/rstream.c

@@ -200,10 +200,6 @@ static void invoke_read_cb(Stream *stream, size_t count, bool eof)
   // Don't let the stream be closed before the event is processed.
   stream->pending_reqs++;
 
-  CREATE_EVENT(stream->events,
+  CREATE_EVENT(stream->events, read_event,
-               read_event,
+               stream, (void *)(uintptr_t *)count, (void *)(uintptr_t)eof);
-               3,
-               stream,
-               (void *)(uintptr_t *)count,
-               (void *)(uintptr_t)eof);
 }

src/nvim/event/signal.c

@@ -47,7 +47,7 @@ static void signal_event(void **argv)
 static void signal_watcher_cb(uv_signal_t *handle, int signum)
 {
   SignalWatcher *watcher = handle->data;
-  CREATE_EVENT(watcher->events, signal_event, 1, watcher);
+  CREATE_EVENT(watcher->events, signal_event, watcher);
 }
 
 static void close_cb(uv_handle_t *handle)

src/nvim/event/socket.c

@@ -174,8 +174,7 @@ static void connection_event(void **argv)
 static void connection_cb(uv_stream_t *handle, int status)
 {
   SocketWatcher *watcher = handle->data;
-  CREATE_EVENT(watcher->events, connection_event, 2, watcher,
+  CREATE_EVENT(watcher->events, connection_event, watcher, (void *)(uintptr_t)status);
-               (void *)(uintptr_t)status);
 }
 
 static void close_cb(uv_handle_t *handle)

src/nvim/event/time.c

@@ -52,7 +52,7 @@ static void time_watcher_cb(uv_timer_t *handle)
     // the timer blocked and there already is an unprocessed event waiting
     return;
   }
-  CREATE_EVENT(watcher->events, time_event, 1, watcher);
+  CREATE_EVENT(watcher->events, time_event, watcher);
 }
 
 static void close_event(void **argv)
@@ -66,6 +66,6 @@ static void close_cb(uv_handle_t *handle)
 {
   TimeWatcher *watcher = handle->data;
   if (watcher->close_cb) {
-    CREATE_EVENT(watcher->events, close_event, 1, watcher);
+    CREATE_EVENT(watcher->events, close_event, watcher);
   }
 }

src/nvim/lua/executor.c

@@ -208,7 +208,7 @@ static int nlua_luv_cfpcall(lua_State *lstate, int nargs, int nresult, int flags
     const char *error = lua_tostring(lstate, -1);
 
     multiqueue_put(main_loop.events, nlua_luv_error_event,
-                   2, xstrdup(error), (intptr_t)kCallback);
+                   xstrdup(error), (void *)(intptr_t)kCallback);
     lua_pop(lstate, 1);  // error message
     retval = -status;
   } else {  // LUA_OK
@@ -266,11 +266,11 @@ static int nlua_luv_thread_common_cfpcall(lua_State *lstate, int nargs, int nres
     const char *error = lua_tostring(lstate, -1);
 
     loop_schedule_deferred(&main_loop,
-                           event_create(nlua_luv_error_event, 2,
+                           event_create(nlua_luv_error_event,
                                         xstrdup(error),
-                                        is_callback
+                                        (void *)(intptr_t)(is_callback
-                                        ? (intptr_t)kThreadCallback
+                                                           ? kThreadCallback
-                                        : (intptr_t)kThread));
+                                                           : kThread)));
     lua_pop(lstate, 1);  // error message
     retval = -status;
   } else {  // LUA_OK
@@ -379,8 +379,7 @@ static int nlua_schedule(lua_State *const lstate)
 
   LuaRef cb = nlua_ref_global(lstate, 1);
 
-  multiqueue_put(main_loop.events, nlua_schedule_event,
+  multiqueue_put(main_loop.events, nlua_schedule_event, (void *)(ptrdiff_t)cb);
-                 1, (void *)(ptrdiff_t)cb);
   return 0;
 }
 
@@ -1022,15 +1021,14 @@ static int nlua_print(lua_State *const lstate)
 
   if (is_thread) {
     loop_schedule_deferred(&main_loop,
-                           event_create(nlua_print_event, 2,
+                           event_create(nlua_print_event,
                                         msg_ga.ga_data,
-                                        (intptr_t)msg_ga.ga_len));
+                                        (void *)(intptr_t)msg_ga.ga_len));
   } else if (in_fast_callback) {
     multiqueue_put(main_loop.events, nlua_print_event,
-                   2, msg_ga.ga_data, (intptr_t)msg_ga.ga_len);
+                   msg_ga.ga_data, (void *)(intptr_t)msg_ga.ga_len);
   } else {
-    nlua_print_event((void *[]){ msg_ga.ga_data,
+    nlua_print_event((void *[]){ msg_ga.ga_data, (void *)(intptr_t)msg_ga.ga_len });
-                                 (void *)(intptr_t)msg_ga.ga_len });
   }
   return 0;
 

src/nvim/message.c

@@ -871,7 +871,7 @@ void msg_schedule_semsg(const char *const fmt, ...)
   va_end(ap);
 
   char *s = xstrdup(IObuff);
-  loop_schedule_deferred(&main_loop, event_create(msg_semsg_event, 1, s));
+  loop_schedule_deferred(&main_loop, event_create(msg_semsg_event, s));
 }
 
 static void msg_semsg_multiline_event(void **argv)
@@ -889,7 +889,7 @@ void msg_schedule_semsg_multiline(const char *const fmt, ...)
   va_end(ap);
 
   char *s = xstrdup(IObuff);
-  loop_schedule_deferred(&main_loop, event_create(msg_semsg_multiline_event, 1, s));
+  loop_schedule_deferred(&main_loop, event_create(msg_semsg_multiline_event, s));
 }
 
 /// Like msg(), but truncate to a single line if p_shm contains 't', or when

src/nvim/msgpack_rpc/channel.c

@@ -404,7 +404,7 @@ static void handle_request(Channel *channel, Unpacker *p, Array args)
 
     if (is_get_mode && !input_blocking()) {
       // Defer the event to a special queue used by os/input.c. #6247
-      multiqueue_put(ch_before_blocking_events, request_event, 1, evdata);
+      multiqueue_put(ch_before_blocking_events, request_event, evdata);
     } else {
       // Invoke immediately.
       request_event((void **)&evdata);
@@ -412,12 +412,11 @@ static void handle_request(Channel *channel, Unpacker *p, Array args)
   } else {
     bool is_resize = p->handler.fn == handle_nvim_ui_try_resize;
     if (is_resize) {
-      Event ev = event_create_oneshot(event_create(request_event, 1, evdata),
+      Event ev = event_create_oneshot(event_create(request_event, evdata), 2);
-                                      2);
       multiqueue_put_event(channel->events, ev);
       multiqueue_put_event(resize_events, ev);
     } else {
-      multiqueue_put(channel->events, request_event, 1, evdata);
+      multiqueue_put(channel->events, request_event, evdata);
       DLOG("RPC: scheduled %.*s", (int)p->method_name_len, p->handler.name);
     }
   }
@@ -484,7 +483,7 @@ static bool channel_write(Channel *channel, WBuffer *buffer)
 
   if (channel->streamtype == kChannelStreamInternal) {
     channel_incref(channel);
-    CREATE_EVENT(channel->events, internal_read_event, 2, channel, buffer);
+    CREATE_EVENT(channel->events, internal_read_event, channel, buffer);
     success = true;
   } else {
     Stream *in = channel_instream(channel);

src/nvim/os/input.c

@@ -88,7 +88,7 @@ static void create_cursorhold_event(bool events_enabled)
   // TODO(tarruda): Cursorhold should be implemented as a timer set during the
   // `state_check` callback for the states where it can be triggered.
   assert(!events_enabled || multiqueue_empty(main_loop.events));
-  multiqueue_put(main_loop.events, cursorhold_event, 0);
+  multiqueue_put(main_loop.events, cursorhold_event, NULL);
 }
 
 static void restart_cursorhold_wait(int tb_change_cnt)

src/nvim/tui/input.c

@@ -742,7 +742,7 @@ static void tinput_read_cb(Stream *stream, RBuffer *buf, size_t count_, void *da
   TermInput *input = data;
 
   if (eof) {
-    loop_schedule_fast(&main_loop, event_create(tinput_done_event, 0));
+    loop_schedule_fast(&main_loop, event_create(tinput_done_event, NULL));
     return;
   }
 

src/nvim/ui.c

@@ -276,7 +276,7 @@ static void ui_refresh_event(void **argv)
 
 void ui_schedule_refresh(void)
 {
-  multiqueue_put(resize_events, ui_refresh_event, 0);
+  multiqueue_put(resize_events, ui_refresh_event, NULL);
 }
 
 void ui_default_colors_set(void)

test/unit/fixtures/multiqueue.c

@@ -6,7 +6,7 @@
 
 void ut_multiqueue_put(MultiQueue *self, const char *str)
 {
-  multiqueue_put(self, NULL, 1, str);
+  multiqueue_put(self, NULL, (void *)str);
 }
 
 const char *ut_multiqueue_get(MultiQueue *self)