Branched gpu process and command buffer code into Chrome tree. Fixed up paths and other minor changes to make it work in the Chrome tree. Will remove copy from O3D tree shortly. Only works in Windows currently.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/436017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@32952 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 316 insertions, 0 deletions

diff --git a/gpu/command_buffer/service/cmd_parser_test.cc b/gpu/command_buffer/service/cmd_parser_test.cc
new file mode 100644
index 0000000..347eef2
--- /dev/null
+++ b/gpu/command_buffer/service/cmd_parser_test.cc
@@ -0,0 +1,316 @@
+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+// Tests for the command parser.
+
+#include "gpu/command_buffer/service/precompile.h"
+
+#include "base/scoped_ptr.h"
+#include "gpu/command_buffer/service/cmd_parser.h"
+#include "gpu/command_buffer/service/mocks.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace command_buffer {
+
+using testing::Return;
+using testing::Mock;
+using testing::Truly;
+using testing::Sequence;
+using testing::_;
+
+// Test fixture for CommandParser test - Creates a mock AsyncAPIInterface, and
+// a fixed size memory buffer. Also provides a simple API to create a
+// CommandParser.
+class CommandParserTest : public testing::Test {
+ protected:
+  virtual void SetUp() {
+    api_mock_.reset(new AsyncAPIMock);
+    buffer_entry_count_ = 20;
+    buffer_.reset(new CommandBufferEntry[buffer_entry_count_]);
+  }
+  virtual void TearDown() {}
+
+  // Adds a DoCommand expectation in the mock.
+  void AddDoCommandExpect(parse_error::ParseError _return,
+                          unsigned int command,
+                          unsigned int arg_count,
+                          CommandBufferEntry *args) {
+    EXPECT_CALL(*api_mock(), DoCommand(command, arg_count,
+        Truly(AsyncAPIMock::IsArgs(arg_count, args))))
+        .InSequence(sequence_)
+        .WillOnce(Return(_return));
+  }
+
+  // Creates a parser, with a buffer of the specified size (in entries).
+  CommandParser *MakeParser(unsigned int entry_count) {
+    size_t shm_size = buffer_entry_count_ *
+                      sizeof(CommandBufferEntry);  // NOLINT
+    size_t command_buffer_size = entry_count *
+                                 sizeof(CommandBufferEntry);  // NOLINT
+    DCHECK_LE(command_buffer_size, shm_size);
+    return new CommandParser(buffer(),
+                             shm_size,
+                             0,
+                             command_buffer_size,
+                             0,
+                             api_mock());
+  }
+
+  unsigned int buffer_entry_count() { return 20; }
+  AsyncAPIMock *api_mock() { return api_mock_.get(); }
+  CommandBufferEntry *buffer() { return buffer_.get(); }
+ private:
+  unsigned int buffer_entry_count_;
+  scoped_ptr<AsyncAPIMock> api_mock_;
+  scoped_array<CommandBufferEntry> buffer_;
+  Sequence sequence_;
+};
+
+// Tests initialization conditions.
+TEST_F(CommandParserTest, TestInit) {
+  scoped_ptr<CommandParser> parser(MakeParser(10));
+  EXPECT_EQ(0u, parser->get());
+  EXPECT_EQ(0u, parser->put());
+  EXPECT_TRUE(parser->IsEmpty());
+}
+
+// Tests simple commands.
+TEST_F(CommandParserTest, TestSimple) {
+  scoped_ptr<CommandParser> parser(MakeParser(10));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // add a single command, no args
+  header.size = 1;
+  header.command = 123;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  AddDoCommandExpect(parse_error::kParseNoError, 123, 0, NULL);
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add a single command, 2 args
+  header.size = 3;
+  header.command = 456;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 2134;
+  buffer()[put++].value_float = 1.f;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  CommandBufferEntry param_array[2];
+  param_array[0].value_int32 = 2134;
+  param_array[1].value_float = 1.f;
+  AddDoCommandExpect(parse_error::kParseNoError, 456, 2, param_array);
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+// Tests having multiple commands in the buffer.
+TEST_F(CommandParserTest, TestMultipleCommands) {
+  scoped_ptr<CommandParser> parser(MakeParser(10));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // add 2 commands, test with single ProcessCommand()
+  header.size = 2;
+  header.command = 789;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 5151;
+
+  CommandBufferOffset put_cmd2 = put;
+  header.size = 2;
+  header.command = 2121;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 3434;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  CommandBufferEntry param_array[2];
+  param_array[0].value_int32 = 5151;
+  AddDoCommandExpect(parse_error::kParseNoError, 789, 1, param_array);
+  param_array[1].value_int32 = 3434;
+  AddDoCommandExpect(parse_error::kParseNoError, 2121, 1,
+                     param_array+1);
+
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put_cmd2, parser->get());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessCommand());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add 2 commands again, test with ProcessAllCommands()
+  header.size = 2;
+  header.command = 4545;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 5656;
+
+  header.size = 2;
+  header.command = 6767;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 7878;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+
+  param_array[0].value_int32 = 5656;
+  AddDoCommandExpect(parse_error::kParseNoError, 4545, 1, param_array);
+  param_array[1].value_int32 = 7878;
+  AddDoCommandExpect(parse_error::kParseNoError, 6767, 1,
+                     param_array+1);
+
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+// Tests that the parser will wrap correctly at the end of the buffer.
+TEST_F(CommandParserTest, TestWrap) {
+  scoped_ptr<CommandParser> parser(MakeParser(5));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // add 3 commands with no args (1 word each)
+  for (unsigned int i = 0; i < 3; ++i) {
+    header.size = 1;
+    header.command = i;
+    buffer()[put++].value_header = header;
+    AddDoCommandExpect(parse_error::kParseNoError, i, 0, NULL);
+  }
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add 1 command with 1 arg (2 words). That should put us at the end of the
+  // buffer.
+  header.size = 2;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 5;
+  CommandBufferEntry param;
+  param.value_int32 = 5;
+  AddDoCommandExpect(parse_error::kParseNoError, 3, 1, &param);
+
+  DCHECK_EQ(5u, put);
+  put = 0;
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  // add 1 command with 1 arg (2 words).
+  header.size = 2;
+  header.command = 4;
+  buffer()[put++].value_header = header;
+  buffer()[put++].value_int32 = 6;
+  param.value_int32 = 6;
+  AddDoCommandExpect(parse_error::kParseNoError, 4, 1, &param);
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+// Tests error conditions.
+TEST_F(CommandParserTest, TestError) {
+  scoped_ptr<CommandParser> parser(MakeParser(5));
+  CommandBufferOffset put = parser->put();
+  CommandHeader header;
+
+  // Generate a command with size 0.
+  header.size = 0;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseInvalidSize,
+            parser->ProcessAllCommands());
+  // check that no DoCommand call was made.
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  parser.reset(MakeParser(5));
+  put = parser->put();
+
+  // Generate a command with size 6, extends beyond the end of the buffer.
+  header.size = 6;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  EXPECT_EQ(parse_error::kParseOutOfBounds,
+            parser->ProcessAllCommands());
+  // check that no DoCommand call was made.
+  Mock::VerifyAndClearExpectations(api_mock());
+
+  parser.reset(MakeParser(5));
+  put = parser->put();
+
+  // Generates 2 commands.
+  header.size = 1;
+  header.command = 3;
+  buffer()[put++].value_header = header;
+  CommandBufferOffset put_post_fail = put;
+  header.size = 1;
+  header.command = 4;
+  buffer()[put++].value_header = header;
+
+  parser->set_put(put);
+  EXPECT_EQ(put, parser->put());
+  // have the first command fail to parse.
+  AddDoCommandExpect(parse_error::kParseUnknownCommand, 3, 0, NULL);
+  EXPECT_EQ(parse_error::kParseUnknownCommand,
+            parser->ProcessAllCommands());
+  // check that only one command was executed, and that get reflects that
+  // correctly.
+  EXPECT_EQ(put_post_fail, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+  // make the second one succeed, and check that the parser recovered fine.
+  AddDoCommandExpect(parse_error::kParseNoError, 4, 0, NULL);
+  EXPECT_EQ(parse_error::kParseNoError, parser->ProcessAllCommands());
+  EXPECT_EQ(put, parser->get());
+  Mock::VerifyAndClearExpectations(api_mock());
+}
+
+}  // namespace command_buffer