Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/ghost/intern/GHOST_TimerManager.cc

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+/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup GHOST
+ */
+
+/**
+ * Copyright (C) 2001 NaN Technologies B.V.
+ */
+
+#include "GHOST_TimerManager.hh"
+
+#include <algorithm>
+
+#include "GHOST_TimerTask.hh"
+
+GHOST_TimerManager::GHOST_TimerManager() = default;
+
+GHOST_TimerManager::~GHOST_TimerManager()
+{
+  disposeTimers();
+}
+
+uint32_t GHOST_TimerManager::getNumTimers()
+{
+  return uint32_t(timers_.size());
+}
+
+bool GHOST_TimerManager::getTimerFound(GHOST_TimerTask *timer)
+{
+  TTimerVector::const_iterator iter = std::find(timers_.begin(), timers_.end(), timer);
+  return iter != timers_.end();
+}
+
+GHOST_TSuccess GHOST_TimerManager::addTimer(GHOST_TimerTask *timer)
+{
+  GHOST_TSuccess success;
+  if (!getTimerFound(timer)) {
+    /* Add the timer task. */
+    timers_.push_back(timer);
+    success = GHOST_kSuccess;
+  }
+  else {
+    success = GHOST_kFailure;
+  }
+  return success;
+}
+
+GHOST_TSuccess GHOST_TimerManager::removeTimer(GHOST_TimerTask *timer)
+{
+  GHOST_TSuccess success;
+  TTimerVector::iterator iter = std::find(timers_.begin(), timers_.end(), timer);
+  if (iter != timers_.end()) {
+    /* Remove the timer task. */
+    timers_.erase(iter);
+    delete timer;
+    success = GHOST_kSuccess;
+  }
+  else {
+    success = GHOST_kFailure;
+  }
+  return success;
+}
+
+uint64_t GHOST_TimerManager::nextFireTime()
+{
+  uint64_t smallest = GHOST_kFireTimeNever;
+  TTimerVector::iterator iter;
+
+  for (iter = timers_.begin(); iter != timers_.end(); ++iter) {
+    const uint64_t next = (*iter)->getNext();
+    smallest = std::min(next, smallest);
+  }
+
+  return smallest;
+}
+
+bool GHOST_TimerManager::fireTimers(uint64_t time)
+{
+  TTimerVector::iterator iter;
+  bool anyProcessed = false;
+
+  for (iter = timers_.begin(); iter != timers_.end(); ++iter) {
+    if (fireTimer(time, *iter)) {
+      anyProcessed = true;
+    }
+  }
+
+  return anyProcessed;
+}
+
+bool GHOST_TimerManager::fireTimer(uint64_t time, GHOST_TimerTask *task)
+{
+  uint64_t next = task->getNext();
+
+  /* Check if the timer should be fired. */
+  if (time > next) {
+    /* Fire the timer. */
+    GHOST_TimerProcPtr timer_proc = task->getTimerProc();
+    uint64_t start = task->getStart();
+    timer_proc(task, time - start);
+
+    /* Update the time at which we will fire it again. */
+    uint64_t interval = task->getInterval();
+    uint64_t numCalls = (next - start) / interval;
+    numCalls++;
+    next = start + numCalls * interval;
+    task->setNext(next);
+
+    return true;
+  }
+  return false;
+}
+
+void GHOST_TimerManager::disposeTimers()
+{
+  while (timers_.empty() == false) {
+    delete timers_[0];
+    timers_.erase(timers_.begin());
+  }
+}