Mercurial > hg > truffle
annotate src/share/vm/shark/sharkStack.cpp @ 12211:2e6938dd68f2
6900441: PlatformEvent.park(millis) on Linux could still be affected by changes to the time-of-day clock
Summary: Associate CLOCK_MONOTONIC with the pthread_cond_t objects used for relative timed waits
Reviewed-by: dcubed, shade
author | dholmes |
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date | Mon, 16 Sep 2013 07:38:13 -0400 |
parents | 2cd5e15048e6 |
children |
rev | line source |
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1692 | 1 /* |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
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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( | |
7195 | 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, | |
7195 | 166 Type* type, |
1692 | 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 |