EDK: Change Awakable::Awake()'s context, etc., to be a uint64_t.

mojo/edk/system/waiter_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/waiter.h"
@@ skipping 18 matching lines @@
 namespace {
 
 const unsigned kPollTimeMs = 10;
 
 class WaitingThread : public test::SimpleTestThread {
  public:
   explicit WaitingThread(MojoDeadline deadline)
       : deadline_(deadline),
         done_(false),
         result_(MOJO_RESULT_UNKNOWN),
-        context_(static_cast<uint32_t>(-1)) {
+        context_(static_cast<uint64_t>(-1)) {
     waiter_.Init();
   }
 
   ~WaitingThread() override { Join(); }
 
   void WaitUntilDone(MojoResult* result,
-                     uint32_t* context,
+                     uint64_t* context,
                      MojoDeadline* elapsed) {
     for (;;) {
       {
         MutexLocker locker(&mutex_);
         if (done_) {
           *result = result_;
           *context = context_;
           *elapsed = elapsed_;
           break;
         }
       }
 
       ThreadSleep(test::DeadlineFromMilliseconds(kPollTimeMs));
     }
   }
 
   Waiter* waiter() { return &waiter_; }
 
  private:
   void Run() override {
     Stopwatch stopwatch;
     MojoResult result;
-    uint32_t context = static_cast<uint32_t>(-1);
+    uint64_t context = static_cast<uint64_t>(-1);
     MojoDeadline elapsed;
 
     stopwatch.Start();
     result = waiter_.Wait(deadline_, &context);
     elapsed = stopwatch.Elapsed();
 
     {
       MutexLocker locker(&mutex_);
       done_ = true;
       result_ = result;
       context_ = context;
       elapsed_ = elapsed;
     }
   }
 
   const MojoDeadline deadline_;
   Waiter waiter_;  // Thread-safe.
 
   Mutex mutex_;
   bool done_ MOJO_GUARDED_BY(mutex_);
   MojoResult result_ MOJO_GUARDED_BY(mutex_);
-  uint32_t context_ MOJO_GUARDED_BY(mutex_);
+  uint64_t context_ MOJO_GUARDED_BY(mutex_);
   MojoDeadline elapsed_ MOJO_GUARDED_BY(mutex_);
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(WaitingThread);
 };
 
 TEST(WaiterTest, Basic) {
   MojoResult result;
-  uint32_t context;
+  uint64_t context;
   MojoDeadline elapsed;
 
   // Finite deadline.
 
   // Awake immediately after thread start.
   {
     WaitingThread thread(10 * test::EpsilonTimeout());
     thread.Start();
     thread.waiter()->Awake(MOJO_RESULT_OK, 1);
     thread.WaitUntilDone(&result, &context, &elapsed);
@@ skipping 38 matching lines @@
     EXPECT_GT(elapsed, (5 - 1) * test::EpsilonTimeout());
     EXPECT_LT(elapsed, (5 + 1) * test::EpsilonTimeout());
   }
 
   // Don't awake -- time out (on another thread).
   {
     WaitingThread thread(2 * test::EpsilonTimeout());
     thread.Start();
     thread.WaitUntilDone(&result, &context, &elapsed);
     EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, result);
-    EXPECT_EQ(static_cast<uint32_t>(-1), context);
+    EXPECT_EQ(static_cast<uint64_t>(-1), context);
     EXPECT_GT(elapsed, (2 - 1) * test::EpsilonTimeout());
     EXPECT_LT(elapsed, (2 + 1) * test::EpsilonTimeout());
   }
 
   // No (indefinite) deadline.
 
   // Awake immediately after thread start.
   {
     WaitingThread thread(MOJO_DEADLINE_INDEFINITE);
     thread.Start();
@@ skipping 40 matching lines @@
     EXPECT_GT(elapsed, (5 - 1) * test::EpsilonTimeout());
     EXPECT_LT(elapsed, (5 + 1) * test::EpsilonTimeout());
   }
 }
 
 TEST(WaiterTest, TimeOut) {
   Stopwatch stopwatch;
   MojoDeadline elapsed;
 
   Waiter waiter;
-  uint32_t context = 123;
+  uint64_t context = 123;
 
   waiter.Init();
   stopwatch.Start();
   EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, waiter.Wait(0, &context));
   elapsed = stopwatch.Elapsed();
   EXPECT_LT(elapsed, test::EpsilonTimeout());
   EXPECT_EQ(123u, context);
 
   waiter.Init();
   stopwatch.Start();
@@ skipping 10 matching lines @@
             waiter.Wait(5 * test::EpsilonTimeout(), &context));
   elapsed = stopwatch.Elapsed();
   EXPECT_GT(elapsed, (5 - 1) * test::EpsilonTimeout());
   EXPECT_LT(elapsed, (5 + 1) * test::EpsilonTimeout());
   EXPECT_EQ(123u, context);
 }
 
 // The first |Awake()| should always win.
 TEST(WaiterTest, MultipleAwakes) {
   MojoResult result;
-  uint32_t context;
+  uint64_t context;
   MojoDeadline elapsed;
 
   {
     WaitingThread thread(MOJO_DEADLINE_INDEFINITE);
     thread.Start();
     thread.waiter()->Awake(MOJO_RESULT_OK, 1);
     thread.waiter()->Awake(1, 2);
     thread.WaitUntilDone(&result, &context, &elapsed);
     EXPECT_EQ(MOJO_RESULT_OK, result);
     EXPECT_EQ(1u, context);
@@ skipping 34 matching lines @@
     EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, result);
     EXPECT_EQ(7u, context);
     EXPECT_GT(elapsed, (1 - 1) * test::EpsilonTimeout());
     EXPECT_LT(elapsed, (1 + 1) * test::EpsilonTimeout());
   }
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo