Keep only base/extractor.[cc|h].

base/highres_timer_unittest.cc

-// Copyright 2006-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-#include "base/basictypes.h"
-#include "omaha/base/highres_timer-win32.h"
-#include "omaha/testing/unit_test.h"
-
-namespace omaha {
-
-// Timing tests are extremely sensitive to external interference from other
-// work currently being done on the machine.  scoped_priority_boost temporarily
-// raises the priority of the caller's thread to reduce the chance of an
-// intervening context switch.
-
-class scoped_priority_boost {
- public:
-  scoped_priority_boost() {
-    orig_process_priority_ = ::GetPriorityClass(::GetCurrentProcess());
-    if (0 != orig_process_priority_) {
-      if (0 == ::SetPriorityClass(::GetCurrentProcess(),
-                                  HIGH_PRIORITY_CLASS)) {
-        orig_process_priority_ = 0;
-      }
-    }
-
-    orig_thread_priority_ = ::GetThreadPriority(::GetCurrentThread());
-    if (THREAD_PRIORITY_ERROR_RETURN != orig_thread_priority_) {
-      if (0 == ::SetThreadPriority(::GetCurrentThread(),
-                                   THREAD_PRIORITY_HIGHEST)) {
-        orig_thread_priority_ = THREAD_PRIORITY_ERROR_RETURN;
-      }
-    }
-  }
-
-  ~scoped_priority_boost() {
-    if (0 != orig_process_priority_) {
-      ::SetPriorityClass(::GetCurrentProcess(), orig_process_priority_);
-    }
-    if (THREAD_PRIORITY_ERROR_RETURN != orig_thread_priority_) {
-      ::SetPriorityClass(::GetCurrentProcess(), orig_process_priority_);
-    }
-  }
-
-  bool succeeded() const {
-    return (0 != orig_process_priority_) &&
-            (THREAD_PRIORITY_ERROR_RETURN != orig_thread_priority_);
-  }
-
- private:
-  DWORD orig_process_priority_;
-  int orig_thread_priority_;
-
-  DISALLOW_COPY_AND_ASSIGN(scoped_priority_boost);
-};
-
-TEST(HighresTimer, MillisecondClock) {
-  scoped_priority_boost spb;
-  EXPECT_TRUE(spb.succeeded());
-
-  HighresTimer timer;
-
-  // note: this could fail if we context switch between initializing the timer
-  // and here. Very unlikely however.
-  EXPECT_EQ(0, timer.GetElapsedMs());
-  timer.Start();
-  uint64 half_ms = (HighresTimer::GetTimerFrequency() / 2000) + 1;
-  // busy wait for a fraction more than half a millisecond.
-  while (timer.start_ticks() + half_ms > HighresTimer::GetCurrentTicks()) {
-    // Nothing
-  }
-  EXPECT_EQ(1, timer.GetElapsedMs());
-}
-
-TEST(HighresTimer, SecondClock) {
-  scoped_priority_boost spb;
-  EXPECT_TRUE(spb.succeeded());
-
-  HighresTimer timer;
-
-  EXPECT_EQ(0, timer.GetElapsedSec());
-#ifdef OS_WINDOWS
-  ::Sleep(250);
-#else
-  struct timespec ts1 = {0, 250000000};
-  nanosleep(&ts1, 0);
-#endif
-  EXPECT_EQ(0, timer.GetElapsedSec());
-  EXPECT_LE(230, timer.GetElapsedMs());
-  EXPECT_GE(270, timer.GetElapsedMs());
-#ifdef OS_WINDOWS
-  ::Sleep(251);
-#else
-  struct timespec ts2 = {0, 251000000};
-  nanosleep(&ts2, 0);
-#endif
-  EXPECT_EQ(1, timer.GetElapsedSec());
-}
-
-}  // namespace omaha
-