Mercurial > hg > truffle
annotate src/share/vm/code/vmreg.hpp @ 17716:cdb71841f4bc
6498581: ThreadInterruptTest3 produces wrong output on Windows
Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Wed, 26 Feb 2014 15:20:41 -0800 |
| parents | f0c2369fda5a |
| children | d2907f74462e |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6842
b9a9ed0f8eeb
7197424: update copyright year to match last edit in jdk8 hotspot repository
mikael
parents:
6225
diff
changeset
|
2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CODE_VMREG_HPP |
| 26 #define SHARE_VM_CODE_VMREG_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "utilities/globalDefinitions.hpp" | |
|
7204
f0c2369fda5a
8003250: SPARC: move MacroAssembler into separate file
twisti
parents:
6842
diff
changeset
|
30 #include "asm/register.hpp" |
|
f0c2369fda5a
8003250: SPARC: move MacroAssembler into separate file
twisti
parents:
6842
diff
changeset
|
31 |
| 1972 | 32 #ifdef COMPILER2 |
| 33 #include "opto/adlcVMDeps.hpp" | |
| 34 #include "utilities/ostream.hpp" | |
| 35 #ifdef TARGET_ARCH_MODEL_x86_32 | |
| 36 # include "adfiles/adGlobals_x86_32.hpp" | |
| 37 #endif | |
| 38 #ifdef TARGET_ARCH_MODEL_x86_64 | |
| 39 # include "adfiles/adGlobals_x86_64.hpp" | |
| 40 #endif | |
| 41 #ifdef TARGET_ARCH_MODEL_sparc | |
| 42 # include "adfiles/adGlobals_sparc.hpp" | |
| 43 #endif | |
| 44 #ifdef TARGET_ARCH_MODEL_zero | |
| 45 # include "adfiles/adGlobals_zero.hpp" | |
| 46 #endif | |
|
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
47 #ifdef TARGET_ARCH_MODEL_arm |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
48 # include "adfiles/adGlobals_arm.hpp" |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
49 #endif |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
50 #ifdef TARGET_ARCH_MODEL_ppc |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
51 # include "adfiles/adGlobals_ppc.hpp" |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
52 #endif |
| 1972 | 53 #endif |
| 54 | |
| 0 | 55 //------------------------------VMReg------------------------------------------ |
| 56 // The VM uses 'unwarped' stack slots; the compiler uses 'warped' stack slots. | |
| 57 // Register numbers below VMRegImpl::stack0 are the same for both. Register | |
| 58 // numbers above stack0 are either warped (in the compiler) or unwarped | |
| 59 // (in the VM). Unwarped numbers represent stack indices, offsets from | |
| 60 // the current stack pointer. Warped numbers are required during compilation | |
| 61 // when we do not yet know how big the frame will be. | |
| 62 | |
| 63 class VMRegImpl; | |
| 64 typedef VMRegImpl* VMReg; | |
| 65 | |
| 66 class VMRegImpl { | |
| 67 // friend class OopMap; | |
| 68 friend class VMStructs; | |
| 69 friend class OptoReg; | |
| 70 // friend class Location; | |
| 71 private: | |
| 72 enum { | |
| 73 BAD = -1 | |
| 74 }; | |
| 75 | |
| 76 | |
| 77 | |
| 78 static VMReg stack0; | |
| 79 // Names for registers | |
| 80 static const char *regName[]; | |
| 81 static const int register_count; | |
| 82 | |
| 83 | |
| 84 public: | |
| 85 | |
| 86 static VMReg as_VMReg(int val, bool bad_ok = false) { assert(val > BAD || bad_ok, "invalid"); return (VMReg) (intptr_t) val; } | |
| 87 | |
| 88 const char* name() { | |
| 89 if (is_reg()) { | |
| 90 return regName[value()]; | |
| 91 } else if (!is_valid()) { | |
| 92 return "BAD"; | |
| 93 } else { | |
| 94 // shouldn't really be called with stack | |
| 95 return "STACKED REG"; | |
| 96 } | |
| 97 } | |
| 98 static VMReg Bad() { return (VMReg) (intptr_t) BAD; } | |
|
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
|
99 bool is_valid() const { return ((intptr_t) this) != BAD; } |
|
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
|
100 bool is_stack() const { return (intptr_t) this >= (intptr_t) stack0; } |
|
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
|
101 bool is_reg() const { return is_valid() && !is_stack(); } |
| 0 | 102 |
| 103 // A concrete register is a value that returns true for is_reg() and is | |
| 104 // also a register you could use in the assembler. On machines with | |
| 105 // 64bit registers only one half of the VMReg (and OptoReg) is considered | |
| 106 // concrete. | |
| 107 bool is_concrete(); | |
| 108 | |
| 109 // VMRegs are 4 bytes wide on all platforms | |
| 110 static const int stack_slot_size; | |
| 111 static const int slots_per_word; | |
| 112 | |
| 113 | |
| 114 // This really ought to check that the register is "real" in the sense that | |
| 115 // we don't try and get the VMReg number of a physical register that doesn't | |
| 116 // have an expressible part. That would be pd specific code | |
| 117 VMReg next() { | |
| 118 assert((is_reg() && value() < stack0->value() - 1) || is_stack(), "must be"); | |
| 119 return (VMReg)(intptr_t)(value() + 1); | |
| 120 } | |
| 6225 | 121 VMReg next(int i) { |
| 122 assert((is_reg() && value() < stack0->value() - i) || is_stack(), "must be"); | |
| 123 return (VMReg)(intptr_t)(value() + i); | |
| 124 } | |
| 0 | 125 VMReg prev() { |
| 126 assert((is_stack() && value() > stack0->value()) || (is_reg() && value() != 0), "must be"); | |
| 127 return (VMReg)(intptr_t)(value() - 1); | |
| 128 } | |
| 129 | |
| 130 | |
| 131 intptr_t value() const {return (intptr_t) this; } | |
| 132 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
25
diff
changeset
|
133 void print_on(outputStream* st) const; |
|
25
c5cbd367e4d1
6621094: PrintOptoAssembly is broken for oops information in DebugInfo
kvn
parents:
0
diff
changeset
|
134 void print() const { print_on(tty); } |
| 0 | 135 |
| 136 // bias a stack slot. | |
| 137 // Typically used to adjust a virtual frame slots by amounts that are offset by | |
| 138 // amounts that are part of the native abi. The VMReg must be a stack slot | |
| 139 // and the result must be also. | |
| 140 | |
| 141 VMReg bias(int offset) { | |
| 142 assert(is_stack(), "must be"); | |
| 143 // VMReg res = VMRegImpl::as_VMReg(value() + offset); | |
| 144 VMReg res = stack2reg(reg2stack() + offset); | |
| 145 assert(res->is_stack(), "must be"); | |
| 146 return res; | |
| 147 } | |
| 148 | |
| 149 // Convert register numbers to stack slots and vice versa | |
| 150 static VMReg stack2reg( int idx ) { | |
| 151 return (VMReg) (intptr_t) (stack0->value() + idx); | |
| 152 } | |
| 153 | |
| 154 uintptr_t reg2stack() { | |
| 155 assert( is_stack(), "Not a stack-based register" ); | |
| 156 return value() - stack0->value(); | |
| 157 } | |
| 158 | |
| 159 static void set_regName(); | |
| 160 | |
| 1972 | 161 #ifdef TARGET_ARCH_x86 |
| 162 # include "vmreg_x86.hpp" | |
| 163 #endif | |
| 164 #ifdef TARGET_ARCH_sparc | |
| 165 # include "vmreg_sparc.hpp" | |
| 166 #endif | |
| 167 #ifdef TARGET_ARCH_zero | |
| 168 # include "vmreg_zero.hpp" | |
| 169 #endif | |
|
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
170 #ifdef TARGET_ARCH_arm |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
171 # include "vmreg_arm.hpp" |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
172 #endif |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
173 #ifdef TARGET_ARCH_ppc |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
174 # include "vmreg_ppc.hpp" |
|
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
175 #endif |
| 1972 | 176 |
| 0 | 177 |
| 178 }; | |
| 179 | |
| 180 //---------------------------VMRegPair------------------------------------------- | |
| 181 // Pairs of 32-bit registers for arguments. | |
| 182 // SharedRuntime::java_calling_convention will overwrite the structs with | |
| 183 // the calling convention's registers. VMRegImpl::Bad is returned for any | |
| 184 // unused 32-bit register. This happens for the unused high half of Int | |
| 185 // arguments, or for 32-bit pointers or for longs in the 32-bit sparc build | |
| 186 // (which are passed to natives in low 32-bits of e.g. O0/O1 and the high | |
| 187 // 32-bits of O0/O1 are set to VMRegImpl::Bad). Longs in one register & doubles | |
| 188 // always return a high and a low register, as do 64-bit pointers. | |
| 189 // | |
| 190 class VMRegPair { | |
| 191 private: | |
| 192 VMReg _second; | |
| 193 VMReg _first; | |
| 194 public: | |
| 195 void set_bad ( ) { _second=VMRegImpl::Bad(); _first=VMRegImpl::Bad(); } | |
| 196 void set1 ( VMReg v ) { _second=VMRegImpl::Bad(); _first=v; } | |
| 197 void set2 ( VMReg v ) { _second=v->next(); _first=v; } | |
| 198 void set_pair( VMReg second, VMReg first ) { _second= second; _first= first; } | |
| 199 void set_ptr ( VMReg ptr ) { | |
| 200 #ifdef _LP64 | |
| 201 _second = ptr->next(); | |
| 202 #else | |
| 203 _second = VMRegImpl::Bad(); | |
| 204 #endif | |
| 205 _first = ptr; | |
| 206 } | |
| 207 // Return true if single register, even if the pair is really just adjacent stack slots | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
25
diff
changeset
|
208 bool is_single_reg() const { |
| 0 | 209 return (_first->is_valid()) && (_first->value() + 1 == _second->value()); |
| 210 } | |
| 211 | |
| 212 // Return true if single stack based "register" where the slot alignment matches input alignment | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
25
diff
changeset
|
213 bool is_adjacent_on_stack(int alignment) const { |
| 0 | 214 return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0)); |
| 215 } | |
| 216 | |
| 217 // Return true if single stack based "register" where the slot alignment matches input alignment | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
25
diff
changeset
|
218 bool is_adjacent_aligned_on_stack(int alignment) const { |
| 0 | 219 return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0)); |
| 220 } | |
| 221 | |
| 222 // Return true if single register but adjacent stack slots do not count | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
25
diff
changeset
|
223 bool is_single_phys_reg() const { |
| 0 | 224 return (_first->is_reg() && (_first->value() + 1 == _second->value())); |
| 225 } | |
| 226 | |
| 227 VMReg second() const { return _second; } | |
| 228 VMReg first() const { return _first; } | |
| 229 VMRegPair(VMReg s, VMReg f) { _second = s; _first = f; } | |
| 230 VMRegPair(VMReg f) { _second = VMRegImpl::Bad(); _first = f; } | |
| 231 VMRegPair() { _second = VMRegImpl::Bad(); _first = VMRegImpl::Bad(); } | |
| 232 }; | |
| 1972 | 233 |
| 234 #endif // SHARE_VM_CODE_VMREG_HPP |