Add //mojo/edk/platform/thread_utils.* containing "yield" and "sleep".

mojo/edk/system/awakable_list_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // NOTE(vtl): Some of these tests are inherently flaky (e.g., if run on a
 // heavily-loaded system). Sorry. |test::EpsilonTimeout()| may be increased to
 // increase tolerance and reduce observed flakiness (though doing so reduces the
 // meaningfulness of the test).
 
 #include "mojo/edk/system/awakable_list.h"
 
+#include "mojo/edk/platform/thread_utils.h"
 #include "mojo/edk/system/handle_signals_state.h"
-#include "mojo/edk/system/test/sleep.h"
 #include "mojo/edk/system/test/timeouts.h"
 #include "mojo/edk/system/waiter.h"
 #include "mojo/edk/system/waiter_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using mojo::platform::ThreadSleep;
+
 namespace mojo {
 namespace system {
 namespace {
 
 TEST(AwakableListTest, BasicCancel) {
   MojoResult result;
   uint32_t context;
 
   // Cancel immediately after thread start.
   {
@@ skipping 18 matching lines @@
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result);
   EXPECT_EQ(2u, context);
 
   // Cancel some time after thread start.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread(&result, &context);
     awakable_list.Add(thread.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.CancelAll();
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result);
   EXPECT_EQ(3u, context);
 }
 
 TEST(AwakableListTest, BasicAwakeSatisfied) {
   MojoResult result;
   uint32_t context;
 
@@ skipping 26 matching lines @@
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_OK, result);
   EXPECT_EQ(2u, context);
 
   // Awake some time after thread start.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread(&result, &context);
     awakable_list.Add(thread.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_READABLE,
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
     awakable_list.Remove(thread.waiter());
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_OK, result);
   EXPECT_EQ(3u, context);
 }
 
 TEST(AwakableListTest, BasicAwakeUnsatisfiable) {
@@ skipping 25 matching lines @@
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, result);
   EXPECT_EQ(2u, context);
 
   // Awake (for unsatisfiability) some time after thread start.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread(&result, &context);
     awakable_list.Add(thread.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_NONE, MOJO_HANDLE_SIGNAL_WRITABLE));
     awakable_list.Remove(thread.waiter());
     // Double-remove okay:
     awakable_list.Remove(thread.waiter());
   }  // Join |thread|.
   EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, result);
   EXPECT_EQ(3u, context);
 }
 
 TEST(AwakableListTest, MultipleAwakables) {
   MojoResult result1;
   MojoResult result2;
   MojoResult result3;
   MojoResult result4;
   uint32_t context1;
   uint32_t context2;
   uint32_t context3;
   uint32_t context4;
 
   // Cancel two awakables.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread1(&result1, &context1);
     awakable_list.Add(thread1.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 1);
     thread1.Start();
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 2);
     thread2.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.CancelAll();
   }  // Join threads.
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result1);
   EXPECT_EQ(1u, context1);
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result2);
   EXPECT_EQ(2u, context2);
 
   // Awake one awakable, cancel other.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread1(&result1, &context1);
     awakable_list.Add(thread1.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 3);
     thread1.Start();
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 4);
     thread2.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_READABLE,
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
     awakable_list.Remove(thread1.waiter());
     awakable_list.CancelAll();
   }  // Join threads.
   EXPECT_EQ(MOJO_RESULT_OK, result1);
   EXPECT_EQ(3u, context1);
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result2);
   EXPECT_EQ(4u, context2);
 
   // Cancel one awakable, awake other for unsatisfiability.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread1(&result1, &context1);
     awakable_list.Add(thread1.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 5);
     thread1.Start();
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 6);
     thread2.Start();
-    test::Sleep(2 * test::EpsilonTimeout());
+    ThreadSleep(2 * test::EpsilonTimeout());
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_NONE, MOJO_HANDLE_SIGNAL_READABLE));
     awakable_list.Remove(thread2.waiter());
     awakable_list.CancelAll();
   }  // Join threads.
   EXPECT_EQ(MOJO_RESULT_CANCELLED, result1);
   EXPECT_EQ(5u, context1);
   EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, result2);
   EXPECT_EQ(6u, context2);
 
   // Cancel one awakable, awake other for unsatisfiability.
   {
     AwakableList awakable_list;
     test::SimpleWaiterThread thread1(&result1, &context1);
     awakable_list.Add(thread1.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 7);
     thread1.Start();
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     // Should do nothing.
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_NONE,
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
 
     test::SimpleWaiterThread thread2(&result2, &context2);
     awakable_list.Add(thread2.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 8);
     thread2.Start();
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     // Awake #1.
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_READABLE,
         MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE));
     awakable_list.Remove(thread1.waiter());
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     test::SimpleWaiterThread thread3(&result3, &context3);
     awakable_list.Add(thread3.waiter(), MOJO_HANDLE_SIGNAL_WRITABLE, 9);
     thread3.Start();
 
     test::SimpleWaiterThread thread4(&result4, &context4);
     awakable_list.Add(thread4.waiter(), MOJO_HANDLE_SIGNAL_READABLE, 10);
     thread4.Start();
 
-    test::Sleep(1 * test::EpsilonTimeout());
+    ThreadSleep(1 * test::EpsilonTimeout());
 
     // Awake #2 and #3 for unsatisfiability.
     awakable_list.AwakeForStateChange(HandleSignalsState(
         MOJO_HANDLE_SIGNAL_NONE, MOJO_HANDLE_SIGNAL_READABLE));
     awakable_list.Remove(thread2.waiter());
     awakable_list.Remove(thread3.waiter());
 
     // Cancel #4.
     awakable_list.CancelAll();
   }  // Join threads.
@@ skipping 72 matching lines @@
   EXPECT_EQ(keep1.awake_count, 2);
   EXPECT_EQ(remove2.awake_count, 1);
 
   remove_first.Remove(&keep0);
   remove_first.Remove(&keep1);
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo