From 96e5cc193ee5875225434cb7bdfd835ee2b982f9 Mon Sep 17 00:00:00 2001
From: Bob Polis <bob.polis@gmail.com>
Date: Wed, 24 Jan 2024 09:19:34 +0100
Subject: [PATCH] Make context mutable

the user callback gets a const timer ref, so in principle the context
would always be read-only. However, in practice it would often be
desirable to mutate the passed context. Therfore, it's now mutable.
---
 src/timer.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/timer.hpp b/src/timer.hpp
index 3eed608..a171d84 100644
--- a/src/timer.hpp
+++ b/src/timer.hpp
@@ -10,12 +10,12 @@ namespace sc {
         static uint64_t next_id;
         static std::mutex mutex;
 
-        timer_t _tid;
         uint64_t _id {};
         double _time {};
         bool _repeat {};
         void (*_expired_func)(const timer& self);
-        void* _context {};
+        mutable void* _context {};
+        timer_t _tid;
 
         static void callback(union sigval);