| /* -*- c++ -*- */ |
| /* |
| * Copyright © 2010-2014 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #ifndef BRW_IR_ALLOCATOR_H |
| #define BRW_IR_ALLOCATOR_H |
| |
| #include "main/macros.h" |
| |
| namespace brw { |
| /** |
| * Simple allocator used to keep track of virtual GRFs. |
| */ |
| class simple_allocator { |
| public: |
| simple_allocator() : |
| sizes(NULL), offsets(NULL), count(0), total_size(0), capacity(0) |
| { |
| } |
| |
| ~simple_allocator() |
| { |
| free(offsets); |
| free(sizes); |
| } |
| |
| unsigned |
| allocate(unsigned size) |
| { |
| assert(size > 0); |
| if (capacity <= count) { |
| capacity = MAX2(16, capacity * 2); |
| sizes = (unsigned *)realloc(sizes, capacity * sizeof(unsigned)); |
| offsets = (unsigned *)realloc(offsets, capacity * sizeof(unsigned)); |
| } |
| |
| sizes[count] = size; |
| offsets[count] = total_size; |
| total_size += size; |
| |
| return count++; |
| } |
| |
| /** |
| * Array of sizes for each allocation. The allocation unit is up to the |
| * back-end, but it's expected to be one scalar value in the FS back-end |
| * and one vec4 in the VEC4 back-end. |
| */ |
| unsigned *sizes; |
| |
| /** |
| * Array of offsets from the start of the VGRF space in allocation |
| * units. |
| */ |
| unsigned *offsets; |
| |
| /** Total number of VGRFs allocated. */ |
| unsigned count; |
| |
| /** Cumulative size in allocation units. */ |
| unsigned total_size; |
| |
| private: |
| unsigned capacity; |
| }; |
| } |
| |
| #endif |