Merge bitcoin/bitcoin#25100: Switch scheduler to steady_clock

fa9051642269f62f560af3f323fbf36cb7b58082 Switch scheduler to steady_clock (MacroFake)

Pull request description:

  There is already `mockscheduler`, so it seems brittle, confusing and redundant to be able to mock the scheduler by adjusting the system clock.

ACKs for top commit:
  laanwj:
    Code review ACK fa9051642269f62f560af3f323fbf36cb7b58082
  w0xlt:
    crACK https://github.com/bitcoin/bitcoin/pull/25100/commits/fa9051642269f62f560af3f323fbf36cb7b58082

Tree-SHA512: 60e99065ffb881a9fb25a346d311d99424fbc72a3b636c94b5f5c17ed6373c40f358a9b27825c518d12968c033e6cfd3c62d2b62cacdddc44a0b5b74f6c1a7ae

1 files changed, 5 insertions, 5 deletions

diff --git a/src/scheduler.h b/src/scheduler.h
index eb350e4bc3..b8245f97ed 100644
--- a/src/scheduler.h
+++ b/src/scheduler.h
@@ -46,12 +46,12 @@ public:
     typedef std::function<void()> Function;
 
     /** Call func at/after time t */
-    void schedule(Function f, std::chrono::system_clock::time_point t);
+    void schedule(Function f, std::chrono::steady_clock::time_point t);
 
     /** Call f once after the delta has passed */
     void scheduleFromNow(Function f, std::chrono::milliseconds delta)
     {
-        schedule(std::move(f), std::chrono::system_clock::now() + delta);
+        schedule(std::move(f), std::chrono::steady_clock::now() + delta);
     }
 
     /**
@@ -93,8 +93,8 @@ public:
      * Returns number of tasks waiting to be serviced,
      * and first and last task times
      */
-    size_t getQueueInfo(std::chrono::system_clock::time_point& first,
-                        std::chrono::system_clock::time_point& last) const;
+    size_t getQueueInfo(std::chrono::steady_clock::time_point& first,
+                        std::chrono::steady_clock::time_point& last) const;
 
     /** Returns true if there are threads actively running in serviceQueue() */
     bool AreThreadsServicingQueue() const;
@@ -102,7 +102,7 @@ public:
 private:
     mutable Mutex newTaskMutex;
     std::condition_variable newTaskScheduled;
-    std::multimap<std::chrono::system_clock::time_point, Function> taskQueue GUARDED_BY(newTaskMutex);
+    std::multimap<std::chrono::steady_clock::time_point, Function> taskQueue GUARDED_BY(newTaskMutex);
     int nThreadsServicingQueue GUARDED_BY(newTaskMutex){0};
     bool stopRequested GUARDED_BY(newTaskMutex){false};
     bool stopWhenEmpty GUARDED_BY(newTaskMutex){false};