Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/blenlib/intern/time.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 bli
+ */
+
+#include "BLI_time.h"
+
+#include <chrono>
+
+#ifdef WIN32
+
+#  include <cmath>
+#  include <cstdio>
+#  include <windows.h>
+/* timeapi.h needs to be included after windows.h. */
+#  include <timeapi.h>
+
+#else
+
+#  include <thread>
+#  include <unistd.h>
+
+#endif
+
+namespace blender {
+
+double BLI_time_now_seconds()
+{
+  return std::chrono::duration<double>(std::chrono::steady_clock::now().time_since_epoch())
+      .count();
+}
+
+int64_t BLI_time_now_seconds_i()
+{
+  return std::chrono::duration_cast<std::chrono::seconds>(
+             std::chrono::steady_clock::now().time_since_epoch())
+      .count();
+}
+
+#ifdef WIN32
+
+void BLI_time_sleep_ms(int ms)
+{
+  Sleep(ms);
+}
+
+void BLI_time_sleep_precise_us(int us)
+{
+  /* Prefer thread-safety over caching the timer with a static variable. According to
+   * https://github.com/rust-lang/rust/pull/116461/files, this costs only approximately 2000ns. */
+  HANDLE timerHandle = CreateWaitableTimerExW(
+      nullptr, nullptr, CREATE_WAITABLE_TIMER_HIGH_RESOLUTION, TIMER_ALL_ACCESS);
+  if (!timerHandle) {
+    if (GetLastError() == ERROR_INVALID_PARAMETER) {
+      /* CREATE_WAITABLE_TIMER_HIGH_RESOLUTION is only supported since Windows 10, version 1803. */
+      DWORD duration_ms = DWORD(std::ceil(double(us) / 1000.0));
+      Sleep(duration_ms);
+    }
+    else {
+      fprintf(stderr,
+              "BLI_time_sleep_precise_us: CreateWaitableTimerExW failed: %lx\n",
+              GetLastError());
+    }
+    return;
+  }
+
+  /* Wait time is specified in 100 nanosecond intervals. */
+  LARGE_INTEGER wait_time;
+  wait_time.QuadPart = -us * 10;
+  if (!SetWaitableTimer(timerHandle, &wait_time, 0, nullptr, nullptr, 0)) {
+    fprintf(stderr, "BLI_time_sleep_precise_us: SetWaitableTimer failed: %lx\n", GetLastError());
+    CloseHandle(timerHandle);
+    return;
+  }
+
+  if (WaitForSingleObject(timerHandle, INFINITE) != WAIT_OBJECT_0) {
+    fprintf(
+        stderr, "BLI_time_sleep_precise_us: WaitForSingleObject failed: %lx\n", GetLastError());
+    CloseHandle(timerHandle);
+    return;
+  }
+
+  CloseHandle(timerHandle);
+}
+
+#else
+
+void BLI_time_sleep_ms(int ms)
+{
+  if (ms >= 1000) {
+    sleep(ms / 1000);
+    ms = (ms % 1000);
+  }
+
+  usleep(ms * 1000);
+}
+
+void BLI_time_sleep_precise_us(int us)
+{
+  std::this_thread::sleep_for(std::chrono::microseconds(us));
+}
+
+#endif
+
+}  // namespace blender