Mercurial > hg > graal-compiler
annotate src/share/vm/shark/sharkStack.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f95d63e2154a |
| children | 2cd5e15048e6 |
| rev | line source |
|---|---|
| 1692 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 1692 | 3 * Copyright 2008, 2009, 2010 Red Hat, Inc. |
| 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 5 * | |
| 6 * This code is free software; you can redistribute it and/or modify it | |
| 7 * under the terms of the GNU General Public License version 2 only, as | |
| 8 * published by the Free Software Foundation. | |
| 9 * | |
| 10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 * version 2 for more details (a copy is included in the LICENSE file that | |
| 14 * accompanied this code). | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License version | |
| 17 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 19 * | |
| 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 21 * or visit www.oracle.com if you need additional information or have any | |
| 22 * questions. | |
| 23 * | |
| 24 */ | |
| 25 | |
| 1972 | 26 #include "precompiled.hpp" |
| 27 #include "shark/llvmHeaders.hpp" | |
| 28 #include "shark/sharkFunction.hpp" | |
| 29 #include "shark/sharkNativeWrapper.hpp" | |
| 30 #include "shark/sharkStack.hpp" | |
| 31 #include "shark/sharkType.hpp" | |
| 1692 | 32 |
| 33 using namespace llvm; | |
| 34 | |
| 35 void SharkStack::initialize(Value* method) { | |
| 36 bool setup_sp_and_method = (method != NULL); | |
| 37 | |
| 38 int locals_words = max_locals(); | |
| 39 int extra_locals = locals_words - arg_size(); | |
| 40 int header_words = SharkFrame::header_words; | |
| 41 int monitor_words = max_monitors()*frame::interpreter_frame_monitor_size(); | |
| 42 int stack_words = max_stack(); | |
| 43 int frame_words = header_words + monitor_words + stack_words; | |
| 44 | |
| 45 _extended_frame_size = frame_words + locals_words; | |
| 46 | |
| 47 // Update the stack pointer | |
| 48 Value *stack_pointer = builder()->CreateSub( | |
| 49 CreateLoadStackPointer(), | |
| 50 LLVMValue::intptr_constant((frame_words + extra_locals) * wordSize)); | |
| 51 CreateStackOverflowCheck(stack_pointer); | |
| 52 if (setup_sp_and_method) | |
| 53 CreateStoreStackPointer(stack_pointer); | |
| 54 | |
| 55 // Create the frame | |
| 56 _frame = builder()->CreateIntToPtr( | |
| 57 stack_pointer, | |
| 58 PointerType::getUnqual( | |
| 59 ArrayType::get(SharkType::intptr_type(), extended_frame_size())), | |
| 60 "frame"); | |
| 61 int offset = 0; | |
| 62 | |
| 63 // Expression stack | |
| 64 _stack_slots_offset = offset; | |
| 65 offset += stack_words; | |
| 66 | |
| 67 // Monitors | |
| 68 _monitors_slots_offset = offset; | |
| 69 offset += monitor_words; | |
| 70 | |
| 71 // Temporary oop slot | |
| 72 _oop_tmp_slot_offset = offset++; | |
| 73 | |
| 74 // Method pointer | |
| 75 _method_slot_offset = offset++; | |
| 76 if (setup_sp_and_method) { | |
| 77 builder()->CreateStore( | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
78 method, slot_addr(method_slot_offset(), SharkType::Method*_type())); |
| 1692 | 79 } |
| 80 | |
| 81 // Unextended SP | |
| 82 builder()->CreateStore(stack_pointer, slot_addr(offset++)); | |
| 83 | |
| 84 // PC | |
| 85 _pc_slot_offset = offset++; | |
| 86 | |
| 87 // Frame header | |
| 88 builder()->CreateStore( | |
| 89 LLVMValue::intptr_constant(ZeroFrame::SHARK_FRAME), slot_addr(offset++)); | |
| 90 Value *fp = slot_addr(offset++); | |
| 91 | |
| 92 // Local variables | |
| 93 _locals_slots_offset = offset; | |
| 94 offset += locals_words; | |
| 95 | |
| 96 // Push the frame | |
| 97 assert(offset == extended_frame_size(), "should do"); | |
| 98 builder()->CreateStore(CreateLoadFramePointer(), fp); | |
| 99 CreateStoreFramePointer( | |
| 100 builder()->CreatePtrToInt(fp, SharkType::intptr_type())); | |
| 101 } | |
| 102 | |
| 103 // This function should match ZeroStack::overflow_check | |
| 104 void SharkStack::CreateStackOverflowCheck(Value* sp) { | |
| 105 BasicBlock *zero_ok = CreateBlock("zero_stack_ok"); | |
| 106 BasicBlock *overflow = CreateBlock("stack_overflow"); | |
| 107 BasicBlock *abi_ok = CreateBlock("abi_stack_ok"); | |
| 108 | |
| 109 // Check the Zero stack | |
| 110 builder()->CreateCondBr( | |
| 111 builder()->CreateICmpULT(sp, stack_base()), | |
| 112 overflow, zero_ok); | |
| 113 | |
| 114 // Check the ABI stack | |
| 115 builder()->SetInsertPoint(zero_ok); | |
| 116 Value *stack_top = builder()->CreateSub( | |
| 117 builder()->CreateValueOfStructEntry( | |
| 118 thread(), | |
| 119 Thread::stack_base_offset(), | |
| 120 SharkType::intptr_type(), | |
| 121 "abi_base"), | |
| 122 builder()->CreateValueOfStructEntry( | |
| 123 thread(), | |
| 124 Thread::stack_size_offset(), | |
| 125 SharkType::intptr_type(), | |
| 126 "abi_size")); | |
| 127 Value *free_stack = builder()->CreateSub( | |
| 128 builder()->CreatePtrToInt( | |
| 129 builder()->CreateGetFrameAddress(), | |
| 130 SharkType::intptr_type(), | |
| 131 "abi_sp"), | |
| 132 stack_top); | |
| 133 builder()->CreateCondBr( | |
| 134 builder()->CreateICmpULT( | |
| 135 free_stack, | |
| 136 LLVMValue::intptr_constant(StackShadowPages * os::vm_page_size())), | |
| 137 overflow, abi_ok); | |
| 138 | |
| 139 // Handle overflows | |
| 140 builder()->SetInsertPoint(overflow); | |
| 141 builder()->CreateCall(builder()->throw_StackOverflowError(), thread()); | |
| 142 builder()->CreateRet(LLVMValue::jint_constant(0)); | |
| 143 | |
| 144 builder()->SetInsertPoint(abi_ok); | |
| 145 } | |
| 146 | |
| 147 Value* SharkStack::CreatePopFrame(int result_slots) { | |
| 148 assert(result_slots >= 0 && result_slots <= 2, "should be"); | |
| 149 int locals_to_pop = max_locals() - result_slots; | |
| 150 | |
| 151 Value *fp = CreateLoadFramePointer(); | |
| 152 Value *sp = builder()->CreateAdd( | |
| 153 fp, | |
| 154 LLVMValue::intptr_constant((1 + locals_to_pop) * wordSize)); | |
| 155 | |
| 156 CreateStoreStackPointer(sp); | |
| 157 CreateStoreFramePointer( | |
| 158 builder()->CreateLoad( | |
| 159 builder()->CreateIntToPtr( | |
| 160 fp, PointerType::getUnqual(SharkType::intptr_type())))); | |
| 161 | |
| 162 return sp; | |
| 163 } | |
| 164 | |
| 165 Value* SharkStack::slot_addr(int offset, | |
| 166 const Type* type, | |
| 167 const char* name) const { | |
| 168 bool needs_cast = type && type != SharkType::intptr_type(); | |
| 169 | |
| 170 Value* result = builder()->CreateStructGEP( | |
| 171 _frame, offset, needs_cast ? "" : name); | |
| 172 | |
| 173 if (needs_cast) { | |
| 174 result = builder()->CreateBitCast( | |
| 175 result, PointerType::getUnqual(type), name); | |
| 176 } | |
| 177 return result; | |
| 178 } | |
| 179 | |
| 180 // The bits that differentiate stacks with normal and native frames on top | |
| 181 | |
| 182 SharkStack* SharkStack::CreateBuildAndPushFrame(SharkFunction* function, | |
| 183 Value* method) { | |
| 184 return new SharkStackWithNormalFrame(function, method); | |
| 185 } | |
| 186 SharkStack* SharkStack::CreateBuildAndPushFrame(SharkNativeWrapper* wrapper, | |
| 187 Value* method) { | |
| 188 return new SharkStackWithNativeFrame(wrapper, method); | |
| 189 } | |
| 190 | |
| 191 SharkStackWithNormalFrame::SharkStackWithNormalFrame(SharkFunction* function, | |
| 192 Value* method) | |
| 193 : SharkStack(function), _function(function) { | |
| 194 // For normal frames, the stack pointer and the method slot will | |
| 195 // be set during each decache, so it is not necessary to do them | |
| 196 // at the time the frame is created. However, we set them for | |
| 197 // non-PRODUCT builds to make crash dumps easier to understand. | |
| 198 initialize(PRODUCT_ONLY(NULL) NOT_PRODUCT(method)); | |
| 199 } | |
| 200 SharkStackWithNativeFrame::SharkStackWithNativeFrame(SharkNativeWrapper* wrp, | |
| 201 Value* method) | |
| 202 : SharkStack(wrp), _wrapper(wrp) { | |
| 203 initialize(method); | |
| 204 } | |
| 205 | |
| 206 int SharkStackWithNormalFrame::arg_size() const { | |
| 207 return function()->arg_size(); | |
| 208 } | |
| 209 int SharkStackWithNativeFrame::arg_size() const { | |
| 210 return wrapper()->arg_size(); | |
| 211 } | |
| 212 | |
| 213 int SharkStackWithNormalFrame::max_locals() const { | |
| 214 return function()->max_locals(); | |
| 215 } | |
| 216 int SharkStackWithNativeFrame::max_locals() const { | |
| 217 return wrapper()->arg_size(); | |
| 218 } | |
| 219 | |
| 220 int SharkStackWithNormalFrame::max_stack() const { | |
| 221 return function()->max_stack(); | |
| 222 } | |
| 223 int SharkStackWithNativeFrame::max_stack() const { | |
| 224 return 0; | |
| 225 } | |
| 226 | |
| 227 int SharkStackWithNormalFrame::max_monitors() const { | |
| 228 return function()->max_monitors(); | |
| 229 } | |
| 230 int SharkStackWithNativeFrame::max_monitors() const { | |
| 231 return wrapper()->is_synchronized() ? 1 : 0; | |
| 232 } | |
| 233 | |
| 234 BasicBlock* SharkStackWithNormalFrame::CreateBlock(const char* name) const { | |
| 235 return function()->CreateBlock(name); | |
| 236 } | |
| 237 BasicBlock* SharkStackWithNativeFrame::CreateBlock(const char* name) const { | |
| 238 return wrapper()->CreateBlock(name); | |
| 239 } | |
| 240 | |
| 241 address SharkStackWithNormalFrame::interpreter_entry_point() const { | |
| 242 return (address) CppInterpreter::normal_entry; | |
| 243 } | |
| 244 address SharkStackWithNativeFrame::interpreter_entry_point() const { | |
| 245 return (address) CppInterpreter::native_entry; | |
| 246 } | |
| 247 | |
| 248 #ifndef PRODUCT | |
| 249 void SharkStack::CreateAssertLastJavaSPIsNull() const { | |
| 250 #ifdef ASSERT | |
| 251 BasicBlock *fail = CreateBlock("assert_failed"); | |
| 252 BasicBlock *pass = CreateBlock("assert_ok"); | |
| 253 | |
| 254 builder()->CreateCondBr( | |
| 255 builder()->CreateICmpEQ( | |
| 256 builder()->CreateLoad(last_Java_sp_addr()), | |
| 257 LLVMValue::intptr_constant(0)), | |
| 258 pass, fail); | |
| 259 | |
| 260 builder()->SetInsertPoint(fail); | |
| 261 builder()->CreateShouldNotReachHere(__FILE__, __LINE__); | |
| 262 builder()->CreateUnreachable(); | |
| 263 | |
| 264 builder()->SetInsertPoint(pass); | |
| 265 #endif // ASSERT | |
| 266 } | |
| 267 #endif // !PRODUCT |