From f21867a15cf16a1bd04df33c92acba7edcc724c2 Mon Sep 17 00:00:00 2001
From: Utkarsh Maheshwari <UtkarshME96@gmail.com>
Date: Fri, 30 Mar 2018 20:39:29 +0530
Subject: [PATCH] timer_pause: stop the timer resource (#8199)

If the timer isn't stopped, it still emits events which consume some CPU.

Fix #8188
---
 src/nvim/eval.c                  | 6 ++++++
 src/nvim/testdir/test_timers.vim | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 0f7a1eb004..7bdfe7c9ee 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -16861,6 +16861,12 @@ static void f_timer_pause(typval_T *argvars, typval_T *unused, FunPtr fptr)
   int paused = (bool)tv_get_number(&argvars[1]);
   timer_T *timer = pmap_get(uint64_t)(timers, tv_get_number(&argvars[0]));
   if (timer != NULL) {
+    if (!timer->paused && paused) {
+      time_watcher_stop(&timer->tw);
+    } else if (timer->paused && !paused) {
+      time_watcher_start(&timer->tw, timer_due_cb, timer->timeout,
+                         timer->timeout);
+    }
     timer->paused = paused;
   }
 }
diff --git a/src/nvim/testdir/test_timers.vim b/src/nvim/testdir/test_timers.vim
index d377062780..81ac2b6171 100644
--- a/src/nvim/testdir/test_timers.vim
+++ b/src/nvim/testdir/test_timers.vim
@@ -119,7 +119,7 @@ func Test_paused()
   let slept = WaitFor('g:val == 1')
   call assert_equal(1, g:val)
   if has('reltime')
-    call assert_inrange(0, 60, slept)
+    call assert_inrange(0, 100, slept)
   else
     call assert_inrange(0, 10, slept)
   endif