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HSAIL: fixed deopt bug; cleaned up C++ code Contributed-by: Tom Deneau <tom.deneau@amd.com>
author Doug Simon <doug.simon@oracle.com>
date Tue, 13 May 2014 14:35:15 +0200
parents 9d456ffc6120
children 06eedda53e14
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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 #ifndef GPU_HSAIL_HPP
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26 #define GPU_HSAIL_HPP
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27
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28 #include "utilities/exceptions.hpp"
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29 #include "graal/graalEnv.hpp"
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30 #include "gpu_hsail_Frame.hpp"
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31
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32 class Hsail : public Gpu {
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33
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34 public:
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35 class HSAILKernelDeoptimization VALUE_OBJ_CLASS_SPEC {
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36 friend class VMStructs;
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37 private:
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38 // TODO: separate workitemid and actionAndReason out
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39 // since they are there only once even if there are multiple frames
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40 // for now, though we only ever have one hsail frame
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41 jint _workitemid;
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42 jint _actionAndReason;
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43 // the first (innermost) "hsail frame" starts after the above fields
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44
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45 public:
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46 inline jint workitem() { return _workitemid; }
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47 inline jint reason() { return _actionAndReason; }
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48 inline jint pc_offset() { return first_frame()->pc_offset(); }
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49 inline HSAILFrame *first_frame() {
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50 // starts after the "header" fields
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51 return (HSAILFrame *) (((jbyte *) this) + sizeof(*this));
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52 }
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53 };
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54
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55 // 8 compute units * 40 waves per cu * wavesize 64
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56 // TODO: query the device to get this number
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57 #define MAX_DEOPT_SLOTS (8 * 40 * 64)
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58
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59 class HSAILDeoptimizationInfo : public CHeapObj<mtInternal> {
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60 friend class VMStructs;
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61 private:
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62 jint* _notice_safepoints;
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63 jint _deopt_occurred;
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64 jint _deopt_next_index;
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65 JavaThread** _donor_threads;
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66 jint _num_slots;
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67 jint _deopt_span;
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68 char _ignore;
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69 // keep a pointer last so save area following it is word aligned
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70 jboolean * _never_ran_array;
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71
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72 public:
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73 HSAILKernelDeoptimization _deopt_save_states[1]; // number and size of these can vary per kernel
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74
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75 static inline size_t hdr_size() {
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76 return sizeof(HSAILDeoptimizationInfo);
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77 }
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78
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79 inline jbyte * save_area_start() {
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80 return (jbyte*) (this) + hdr_size();
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81 }
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82
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83 inline HSAILDeoptimizationInfo(int numSlots, int bytesPerSaveArea, int dimX, JavaThread** donorThreads) {
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84 _notice_safepoints = &Hsail::_notice_safepoints;
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85 _deopt_occurred = 0;
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86 _deopt_next_index = 0;
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87 _num_slots = numSlots;
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88 _never_ran_array = NEW_C_HEAP_ARRAY(jboolean, dimX, mtInternal);
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89 memset(_never_ran_array, 0, dimX * sizeof(jboolean));
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90 _donor_threads = donorThreads;
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91 _deopt_span = sizeof(HSAILKernelDeoptimization) + sizeof(HSAILFrame) + bytesPerSaveArea;
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92 if (TraceGPUInteraction) {
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93 tty->print_cr("HSAILDeoptimizationInfo allocated, %d slots of size %d, total size = 0x%lx bytes", _num_slots, _deopt_span, (_num_slots * _deopt_span + sizeof(HSAILDeoptimizationInfo)));
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94 }
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95 }
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96
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97 inline ~HSAILDeoptimizationInfo() {
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98 FREE_C_HEAP_ARRAY(jboolean, _never_ran_array, mtInternal);
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99 }
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100
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101 inline jint deopt_occurred() {
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102 return _deopt_occurred;
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103 }
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104 inline jint num_deopts() { return _deopt_next_index; }
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105 inline jboolean *never_ran_array() { return _never_ran_array; }
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106 inline jint num_slots() {return _num_slots;}
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107
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108 inline HSAILKernelDeoptimization * get_deopt_save_state(int slot) {
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109 // use _deopt_span to index into _deopt_states
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110 return (HSAILKernelDeoptimization *) (save_area_start() + _deopt_span * slot);
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111 }
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112
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113 void * operator new (size_t hdrSize, int numSlots, int bytesPerSaveArea) {
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114 assert(hdrSize <= hdr_size(), "");
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115 size_t totalSizeBytes = hdr_size() + numSlots * (sizeof(HSAILKernelDeoptimization) + sizeof(HSAILFrame) + bytesPerSaveArea);
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116 return NEW_C_HEAP_ARRAY(char, totalSizeBytes, mtInternal);
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117 }
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118
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119 void operator delete (void *ptr) {
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120 FREE_C_HEAP_ARRAY(char, ptr, mtInternal);
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121 }
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122 };
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123
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124 private:
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125
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126 static JNINativeMethod HSAIL_methods[];
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127
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128 // static native boolean initialize();
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129 JNIEXPORT static jboolean initialize(JNIEnv *env, jclass);
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130
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131 // static native long generateKernel(byte[] targetCode, String name);
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132 JNIEXPORT static jlong generate_kernel(JNIEnv *env, jclass, jbyteArray code_handle, jstring name_handle);
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133
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134 // static native boolean executeKernel0(HotSpotInstalledCode kernel, int jobSize, Object[] args);
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135 JNIEXPORT static jboolean execute_kernel_void_1d(JNIEnv *env, jclass, jobject hotspotInstalledCode, jint dimX, jobject args, jobject oopsSave,
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136 jobject donorThreads, int allocBytesPerWorkitem, jobject oop_map_array);
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137
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138 // static native void getThreadPointers(Object[] donorThreads, long[] threadPointersOut);
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139 JNIEXPORT static void get_thread_pointers(JNIEnv *env, jclass, jobject donor_threads_handle, jobject thread_ptrs_handle);
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140
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141 static void getNewTlabForDonorThread(ThreadLocalAllocBuffer* tlab, size_t tlabMinHsail);
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142
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143 static jboolean execute_kernel_void_1d_internal(address kernel, int dimX, jobject args, methodHandle& mh, nmethod *nm, jobject oopsSave,
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144 jobject donorThreads, int allocBytesPerWorkitem, jobject oop_map_array, TRAPS);
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145
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146 static void register_heap();
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147
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148 static GraalEnv::CodeInstallResult install_code(Handle& compiled_code, CodeBlob*& cb, Handle installed_code, Handle triggered_deoptimizations);
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149
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150 public:
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151
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152 // Registers the implementations for the native methods in HSAILHotSpotBackend
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153 static bool register_natives(JNIEnv* env);
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154
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155 virtual const char* name() { return "HSAIL"; }
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156
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157 virtual void notice_safepoints();
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158 virtual void ignore_safepoints();
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159
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160 #if defined(__x86_64) || defined(AMD64) || defined(_M_AMD64)
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161 typedef unsigned long long CUdeviceptr;
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162 #else
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163 typedef unsigned int CUdeviceptr;
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164 #endif
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165
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166 private:
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167 typedef void* (*okra_create_context_func_t)();
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168 typedef void* (*okra_create_kernel_func_t)(void*, unsigned char *, const char *);
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169 typedef bool (*okra_push_object_func_t)(void*, void*);
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170 typedef bool (*okra_push_boolean_func_t)(void*, jboolean);
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171 typedef bool (*okra_push_byte_func_t)(void*, jbyte);
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172 typedef bool (*okra_push_double_func_t)(void*, jdouble);
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173 typedef bool (*okra_push_float_func_t)(void*, jfloat);
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174 typedef bool (*okra_push_int_func_t)(void*, jint);
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175 typedef bool (*okra_push_long_func_t)(void*, jlong);
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176 typedef bool (*okra_execute_with_range_func_t)(void*, jint);
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177 typedef bool (*okra_clearargs_func_t)(void*);
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178 typedef bool (*okra_register_heap_func_t)(void*, size_t);
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179
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180 public:
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181 static okra_create_context_func_t _okra_create_context;
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182 static okra_create_kernel_func_t _okra_create_kernel;
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183 static okra_push_object_func_t _okra_push_object;
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184 static okra_push_boolean_func_t _okra_push_boolean;
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185 static okra_push_byte_func_t _okra_push_byte;
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186 static okra_push_double_func_t _okra_push_double;
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187 static okra_push_float_func_t _okra_push_float;
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188 static okra_push_int_func_t _okra_push_int;
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189 static okra_push_long_func_t _okra_push_long;
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190 static okra_execute_with_range_func_t _okra_execute_with_range;
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191 static okra_clearargs_func_t _okra_clearargs;
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192 static okra_register_heap_func_t _okra_register_heap;
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193
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194 protected:
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195 static void* _device_context;
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196
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197 // true if safepoints are activated
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198 static jint _notice_safepoints;
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199 };
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200 #endif // GPU_HSAIL_HPP