Mojo: Add a platform interface for shared memory (embedder::PlatformSharedBuffer).

mojo/system/shared_buffer_dispatcher_unittest.cc

 // Copyright 2014 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.
 
 #include "mojo/system/shared_buffer_dispatcher.h"
 
 #include <limits>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "mojo/embedder/platform_shared_buffer.h"
 #include "mojo/system/dispatcher.h"
-#include "mojo/system/raw_shared_buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace system {
 namespace {
 
 // NOTE(vtl): There's currently not much to test for in
 // |SharedBufferDispatcher::ValidateCreateOptions()|, but the tests should be
 // expanded if/when options are added, so I've kept the general form of the
 // tests from data_pipe_unittest.cc.
@@ skipping 79 matching lines @@
 TEST(SharedBufferDispatcherTest, CreateAndMapBuffer) {
   scoped_refptr<SharedBufferDispatcher> dispatcher;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       SharedBufferDispatcher::Create(
           SharedBufferDispatcher::kDefaultCreateOptions, 100, &dispatcher));
   ASSERT_TRUE(dispatcher);
   EXPECT_EQ(Dispatcher::kTypeSharedBuffer, dispatcher->GetType());
 
   // Make a couple of mappings.
-  scoped_ptr<RawSharedBufferMapping> mapping1;
+  scoped_ptr<embedder::PlatformSharedBufferMapping> mapping1;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       dispatcher->MapBuffer(0, 100, MOJO_MAP_BUFFER_FLAG_NONE, &mapping1));
   ASSERT_TRUE(mapping1);
-  ASSERT_TRUE(mapping1->base());
-  EXPECT_EQ(100u, mapping1->length());
+  ASSERT_TRUE(mapping1->GetBase());
+  EXPECT_EQ(100u, mapping1->GetLength());
   // Write something.
-  static_cast<char*>(mapping1->base())[50] = 'x';
+  static_cast<char*>(mapping1->GetBase())[50] = 'x';
 
-  scoped_ptr<RawSharedBufferMapping> mapping2;
+  scoped_ptr<embedder::PlatformSharedBufferMapping> mapping2;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       dispatcher->MapBuffer(50, 50, MOJO_MAP_BUFFER_FLAG_NONE, &mapping2));
   ASSERT_TRUE(mapping2);
-  ASSERT_TRUE(mapping2->base());
-  EXPECT_EQ(50u, mapping2->length());
-  EXPECT_EQ('x', static_cast<char*>(mapping2->base())[0]);
+  ASSERT_TRUE(mapping2->GetBase());
+  EXPECT_EQ(50u, mapping2->GetLength());
+  EXPECT_EQ('x', static_cast<char*>(mapping2->GetBase())[0]);
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher->Close());
 
   // Check that we can still read/write to mappings after the dispatcher has
   // gone away.
-  static_cast<char*>(mapping2->base())[1] = 'y';
-  EXPECT_EQ('y', static_cast<char*>(mapping1->base())[51]);
+  static_cast<char*>(mapping2->GetBase())[1] = 'y';
+  EXPECT_EQ('y', static_cast<char*>(mapping1->GetBase())[51]);
 }
 
 TEST(SharedBufferDispatcher, DuplicateBufferHandle) {
   scoped_refptr<SharedBufferDispatcher> dispatcher1;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       SharedBufferDispatcher::Create(
           SharedBufferDispatcher::kDefaultCreateOptions, 100, &dispatcher1));
 
   // Map and write something.
-  scoped_ptr<RawSharedBufferMapping> mapping;
+  scoped_ptr<embedder::PlatformSharedBufferMapping> mapping;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       dispatcher1->MapBuffer(0, 100, MOJO_MAP_BUFFER_FLAG_NONE, &mapping));
-  static_cast<char*>(mapping->base())[0] = 'x';
+  static_cast<char*>(mapping->GetBase())[0] = 'x';
   mapping.reset();
 
   // Duplicate |dispatcher1| and then close it.
   scoped_refptr<Dispatcher> dispatcher2;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       dispatcher1->DuplicateBufferHandle(NullUserPointer(), &dispatcher2));
   ASSERT_TRUE(dispatcher2);
   EXPECT_EQ(Dispatcher::kTypeSharedBuffer, dispatcher2->GetType());
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher1->Close());
 
   // Map |dispatcher2| and read something.
   EXPECT_EQ(
       MOJO_RESULT_OK,
       dispatcher2->MapBuffer(0, 100, MOJO_MAP_BUFFER_FLAG_NONE, &mapping));
-  EXPECT_EQ('x', static_cast<char*>(mapping->base())[0]);
+  EXPECT_EQ('x', static_cast<char*>(mapping->GetBase())[0]);
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher2->Close());
 }
 
 TEST(SharedBufferDispatcherTest, DuplicateBufferHandleOptionsValid) {
   scoped_refptr<SharedBufferDispatcher> dispatcher1;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       SharedBufferDispatcher::Create(
           SharedBufferDispatcher::kDefaultCreateOptions, 100, &dispatcher1));
@@ skipping 64 matching lines @@
   EXPECT_FALSE(dispatcher);
 }
 
 TEST(SharedBufferDispatcherTest, MapBufferInvalidArguments) {
   scoped_refptr<SharedBufferDispatcher> dispatcher;
   EXPECT_EQ(
       MOJO_RESULT_OK,
       SharedBufferDispatcher::Create(
           SharedBufferDispatcher::kDefaultCreateOptions, 100, &dispatcher));
 
-  scoped_ptr<RawSharedBufferMapping> mapping;
+  scoped_ptr<embedder::PlatformSharedBufferMapping> mapping;
   EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
             dispatcher->MapBuffer(0, 101, MOJO_MAP_BUFFER_FLAG_NONE, &mapping));
   EXPECT_FALSE(mapping);
 
   EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
             dispatcher->MapBuffer(1, 100, MOJO_MAP_BUFFER_FLAG_NONE, &mapping));
   EXPECT_FALSE(mapping);
 
   EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
             dispatcher->MapBuffer(0, 0, MOJO_MAP_BUFFER_FLAG_NONE, &mapping));
   EXPECT_FALSE(mapping);
 
   EXPECT_EQ(MOJO_RESULT_OK, dispatcher->Close());
 }
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo