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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // A class to Manage a growing transfer buffer. | 5 // A class to Manage a growing transfer buffer. |
| 6 | 6 |
| 7 #include "gpu/command_buffer/client/transfer_buffer.h" | 7 #include "gpu/command_buffer/client/transfer_buffer.h" |
| 8 | 8 |
| 9 #include "base/bits.h" | 9 #include "base/bits.h" |
| 10 #include "base/debug/trace_event.h" | |
| 11 #include "base/logging.h" | 10 #include "base/logging.h" |
| 11 #include "base/trace_event/trace_event.h" |
| 12 #include "gpu/command_buffer/client/cmd_buffer_helper.h" | 12 #include "gpu/command_buffer/client/cmd_buffer_helper.h" |
| 13 | 13 |
| 14 namespace gpu { | 14 namespace gpu { |
| 15 | 15 |
| 16 TransferBuffer::TransferBuffer( | 16 TransferBuffer::TransferBuffer( |
| 17 CommandBufferHelper* helper) | 17 CommandBufferHelper* helper) |
| 18 : helper_(helper), | 18 : helper_(helper), |
| 19 result_size_(0), | 19 result_size_(0), |
| 20 default_buffer_size_(0), | 20 default_buffer_size_(0), |
| 21 min_buffer_size_(0), | 21 min_buffer_size_(0), |
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| 192 Release(); | 192 Release(); |
| 193 // NOTE: we allocate buffers of size 0 so that HaveBuffer will be true, so | 193 // NOTE: we allocate buffers of size 0 so that HaveBuffer will be true, so |
| 194 // that address will return a pointer just like malloc, and so that GetShmId | 194 // that address will return a pointer just like malloc, and so that GetShmId |
| 195 // will be valid. That has the side effect that we'll insert a token on free. | 195 // will be valid. That has the side effect that we'll insert a token on free. |
| 196 // We could add code skip the token for a zero size buffer but it doesn't seem | 196 // We could add code skip the token for a zero size buffer but it doesn't seem |
| 197 // worth the complication. | 197 // worth the complication. |
| 198 buffer_ = transfer_buffer_->AllocUpTo(new_size, &size_); | 198 buffer_ = transfer_buffer_->AllocUpTo(new_size, &size_); |
| 199 } | 199 } |
| 200 | 200 |
| 201 } // namespace gpu | 201 } // namespace gpu |
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