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annotate src/share/vm/runtime/gpu.cpp @ 13212:eb03a7335eb0

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Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
author Christian Wimmer <christian.wimmer@oracle.com>
date Mon, 02 Dec 2013 14:20:32 -0800
parents f1a55428a8d7
children 49db2c1e3bee
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "runtime/gpu.hpp"
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27 #include "runtime/handles.hpp"
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28
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29 bool gpu::_available = false; // does the hardware exist?
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30 bool gpu::_gpu_linkage = false; // is the driver library to access the GPU installed
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31 bool gpu::_initialized = false; // is the GPU device initialized
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32 gpu::TargetGPUIL gpu::_targetIL = gpu::NONE; // No GPU detected yet.
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33
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34 void gpu::init() {
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35 #if defined(TARGET_OS_FAMILY_bsd) || defined(TARGET_OS_FAMILY_linux) || defined(TARGET_OS_FAMILY_windows)
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36 gpu::probe_gpu();
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37 if (gpu::get_target_il_type() == gpu::PTX) {
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38 set_gpu_linkage(gpu::Ptx::probe_linkage());
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39 } else if (gpu::get_target_il_type() == gpu::HSAIL) {
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40 set_gpu_linkage(gpu::Hsail::probe_linkage());
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41 } else {
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42 set_gpu_linkage(false);
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43 }
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44 #endif
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45 }
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46
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47 void gpu::initialize_gpu() {
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48 if (gpu::has_gpu_linkage()) {
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49 if (gpu::get_target_il_type() == gpu::PTX) {
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50 set_initialized(gpu::Ptx::initialize_gpu());
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51 } else if (gpu::get_target_il_type() == gpu::HSAIL) {
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52 set_initialized(gpu::Hsail::initialize_gpu());
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53 }
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54 }
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55 }
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56
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57 void * gpu::generate_kernel(unsigned char *code, int code_len, const char *name) {
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58 if (gpu::has_gpu_linkage()) {
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59 if (gpu::get_target_il_type() == gpu::PTX) {
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60 return (gpu::Ptx::generate_kernel(code, code_len, name));
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61 } else if (gpu::get_target_il_type() == gpu::HSAIL) {
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62 return (gpu::Hsail::generate_kernel(code, code_len, name));
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63 }
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64 }
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65 return NULL;
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66 }
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67
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68 bool gpu::execute_kernel(address kernel, PTXKernelArguments & ptxka, JavaValue& ret) {
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69 if (gpu::has_gpu_linkage()) {
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70 if (gpu::get_target_il_type() == gpu::PTX) {
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71 return (gpu::Ptx::execute_kernel(kernel, ptxka, ret));
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72 }
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73 // Add kernel execution functionality of other GPUs here
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74 }
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75 return false;
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76 }
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77
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78 // This is HSAIL specific to work with Sumatra JDK
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79 bool gpu::execute_kernel_void_1d(address kernel, int dimX, jobject args, methodHandle& mh) {
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80 if (gpu::has_gpu_linkage()) {
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81 if (gpu::get_target_il_type() == gpu::HSAIL) {
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82 return (gpu::Hsail::execute_kernel_void_1d(kernel, dimX, args, mh));
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83 }
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84 }
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85 return false;
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86
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87 }
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88
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89
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90 bool gpu::execute_warp(int dimX, int dimY, int dimZ,
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91 address kernel, PTXKernelArguments & ptxka, JavaValue& ret) {
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92 if (gpu::has_gpu_linkage()) {
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93 if (gpu::get_target_il_type() == gpu::PTX) {
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94 return (gpu::Ptx::execute_warp(dimX, dimY, dimZ, kernel, ptxka, ret));
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95 }
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96 // Add kernel execution functionality of other GPUs here
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97 }
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98 return false;
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99 }
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100
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101 int gpu::available_processors() {
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102 if (gpu::has_gpu_linkage()) {
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103 if (gpu::get_target_il_type() == gpu::PTX) {
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104 return (gpu::Ptx::total_cores());
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105 }
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106 // Add kernel execution functionality of other GPUs here
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107 }
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108 return 0;
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109 }
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110