1 files changed, 0 insertions, 195 deletions
diff --git a/gpu/command_buffer/client/cmd_buffer_helper.cc b/gpu/command_buffer/client/cmd_buffer_helper.cc
deleted file mode 100644
index e8f6fef..0000000
--- a/gpu/command_buffer/client/cmd_buffer_helper.cc
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- * 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.
- */
-
-
-// This file contains the implementation of the command buffer helper class.
-
-#include "gpu/command_buffer/client/cmd_buffer_helper.h"
-#include "gpu/command_buffer/common/command_buffer.h"
-#include "gpu/np_utils/np_utils.h"
-
-namespace command_buffer {
-
-using command_buffer::CommandBuffer;
-using np_utils::NPBrowser;
-using np_utils::NPInvoke;
-using np_utils::NPObjectPointer;
-
-CommandBufferHelper::CommandBufferHelper(CommandBuffer* command_buffer)
-    : command_buffer_(command_buffer),
-      entries_(NULL),
-      entry_count_(0),
-      token_(0),
-      last_token_read_(-1),
-      get_(0),
-      put_(0) {
-}
-
-bool CommandBufferHelper::Initialize() {
-  ring_buffer_ = command_buffer_->GetRingBuffer();
-  if (!ring_buffer_)
-    return false;
-
-  // Map the ring buffer into this process.
-  if (!ring_buffer_->Map(ring_buffer_->max_size()))
-    return false;
-
-  entries_ = static_cast<CommandBufferEntry*>(ring_buffer_->memory());
-  entry_count_ = command_buffer_->GetSize();
-  get_ = command_buffer_->GetGetOffset();
-  put_ = command_buffer_->GetPutOffset();
-  last_token_read_ = command_buffer_->GetToken();
-
-  return true;
-}
-
-CommandBufferHelper::~CommandBufferHelper() {
-}
-
-bool CommandBufferHelper::Flush() {
-  get_ = command_buffer_->SyncOffsets(put_);
-  return !command_buffer_->GetErrorStatus();
-}
-
-// Calls Flush() and then waits until the buffer is empty. Break early if the
-// error is set.
-bool CommandBufferHelper::Finish() {
-  do {
-    // Do not loop forever if the flush fails, meaning the command buffer reader
-    // has shutdown).
-    if (!Flush())
-      return false;
-  } while (put_ != get_);
-
-  return true;
-}
-
-// Inserts a new token into the command stream. It uses an increasing value
-// scheme so that we don't lose tokens (a token has passed if the current token
-// value is higher than that token). Calls Finish() if the token value wraps,
-// which will be rare.
-int32 CommandBufferHelper::InsertToken() {
-  // Increment token as 31-bit integer. Negative values are used to signal an
-  // error.
-  token_ = (token_ + 1) & 0x7FFFFFFF;
-  CommandBufferEntry args;
-  args.value_uint32 = token_;
-  const uint32 kSetToken = 1;  // TODO(gman): add a common set of commands.
-  AddCommand(kSetToken, 1, &args);
-  if (token_ == 0) {
-    // we wrapped
-    Finish();
-    last_token_read_ = command_buffer_->GetToken();
-    DCHECK_EQ(token_, last_token_read_);
-  }
-  return token_;
-}
-
-// Waits until the current token value is greater or equal to the value passed
-// in argument.
-void CommandBufferHelper::WaitForToken(int32 token) {
-  // Return immediately if corresponding InsertToken failed.
-  if (token < 0)
-    return;
-  if (last_token_read_ >= token) return;  // fast path.
-  if (token > token_) return;  // we wrapped
-  Flush();
-  last_token_read_ = command_buffer_->GetToken();
-  while (last_token_read_ < token) {
-    if (get_ == put_) {
-      LOG(FATAL) << "Empty command buffer while waiting on a token.";
-      return;
-    }
-    // Do not loop forever if the flush fails, meaning the command buffer reader
-    // has shutdown.
-    if (!Flush())
-      return;
-    last_token_read_ = command_buffer_->GetToken();
-  }
-}
-
-// Waits for available entries, basically waiting until get >= put + count + 1.
-// It actually waits for contiguous entries, so it may need to wrap the buffer
-// around, adding noops. Thus this function may change the value of put_.
-// The function will return early if an error occurs, in which case the
-// available space may not be available.
-void CommandBufferHelper::WaitForAvailableEntries(int32 count) {
-  CHECK(count < entry_count_);
-  if (put_ + count > entry_count_) {
-    // There's not enough room between the current put and the end of the
-    // buffer, so we need to wrap. We will add noops all the way to the end,
-    // but we need to make sure get wraps first, actually that get is 1 or
-    // more (since put will wrap to 0 after we add the noops).
-    DCHECK_LE(1, put_);
-    Flush();
-    while (get_ > put_ || get_ == 0) {
-      // Do not loop forever if the flush fails, meaning the command buffer
-      // reader has shutdown.
-      if (!Flush())
-        return;
-    }
-    // Add the noops. By convention, a noop is a command 0 with no args.
-    // TODO(apatrick): A noop can have a size. It would be better to add a
-    //    single noop with a variable size. Watch out for size limit on
-    //    individual commands.
-    CommandHeader header;
-    header.size = 1;
-    header.command = 0;
-    while (put_ < entry_count_) {
-      entries_[put_++].value_header = header;
-    }
-    put_ = 0;
-  }
-  // If we have enough room, return immediatly.
-  if (count <= AvailableEntries()) return;
-  // Otherwise flush, and wait until we do have enough room.
-  Flush();
-  while (AvailableEntries() < count) {
-    // Do not loop forever if the flush fails, meaning the command buffer reader
-    // has shutdown.
-    if (!Flush())
-      return;
-  }
-}
-
-CommandBufferEntry* CommandBufferHelper::GetSpace(uint32 entries) {
-  WaitForAvailableEntries(entries);
-  CommandBufferEntry* space = &entries_[put_];
-  put_ += entries;
-  return space;
-}
-
-parse_error::ParseError CommandBufferHelper::GetParseError() {
-  int32 parse_error = command_buffer_->ResetParseError();
-  return static_cast<parse_error::ParseError>(parse_error);
-}
-
-}  // namespace command_buffer