Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/interpreterRT_x86_32.cpp @ 1837:c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
Summary: Inserted missing yield(check)s in closures used during the work-stealing phase of parallel concurrent marking, a missing synchronous yield-request in the cms perm gen allocation path, and a terminator-terminator for the offer_termination invocation that monitors the yield status of the concurrent marking task. Elaborated some documentation comments and made some task queue termination loop flags configurable at start-up to aid debugging in the field.
Reviewed-by: jmasa, johnc, poonam
author | ysr |
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date | Wed, 29 Sep 2010 16:17:02 -0700 |
parents | 126ea7725993 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2010, 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 * | |
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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. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_interpreterRT_x86_32.cpp.incl" | |
27 | |
28 | |
29 #define __ _masm-> | |
30 | |
31 | |
32 // Implementation of SignatureHandlerGenerator | |
33 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { | |
34 move(offset(), jni_offset() + 1); | |
35 } | |
36 | |
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37 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
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38 move(offset(), jni_offset() + 1); |
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39 } |
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40 |
0 | 41 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
42 move(offset(), jni_offset() + 2); | |
43 move(offset() + 1, jni_offset() + 1); | |
44 } | |
45 | |
46 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { | |
47 box (offset(), jni_offset() + 1); | |
48 } | |
49 | |
50 void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) { | |
51 __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); | |
52 __ movl(Address(to(), to_offset * wordSize), temp()); | |
53 } | |
54 | |
55 | |
56 void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) { | |
304 | 57 __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); |
58 __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI | |
0 | 59 Label L; |
60 __ jcc(Assembler::notZero, L); | |
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61 __ movptr(temp(), NULL_WORD); |
0 | 62 __ bind(L); |
304 | 63 __ movptr(Address(to(), to_offset * wordSize), temp()); |
0 | 64 } |
65 | |
66 | |
67 void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) { | |
68 // generate code to handle arguments | |
69 iterate(fingerprint); | |
70 // return result handler | |
71 __ lea(rax, | |
72 ExternalAddress((address)Interpreter::result_handler(method()->result_type()))); | |
73 // return | |
74 __ ret(0); | |
75 __ flush(); | |
76 } | |
77 | |
78 | |
79 Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; } | |
80 Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; } | |
81 Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; } | |
82 | |
83 | |
84 // Implementation of SignatureHandlerLibrary | |
85 | |
86 void SignatureHandlerLibrary::pd_set_handler(address handler) {} | |
87 | |
88 class SlowSignatureHandler: public NativeSignatureIterator { | |
89 private: | |
90 address _from; | |
91 intptr_t* _to; | |
92 | |
93 virtual void pass_int() { | |
94 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); | |
1506 | 95 _from -= Interpreter::stackElementSize; |
0 | 96 } |
97 | |
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98 virtual void pass_float() { |
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99 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
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100 _from -= Interpreter::stackElementSize; |
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101 } |
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102 |
0 | 103 virtual void pass_long() { |
104 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); | |
105 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0)); | |
106 _to += 2; | |
1506 | 107 _from -= 2*Interpreter::stackElementSize; |
0 | 108 } |
109 | |
110 virtual void pass_object() { | |
111 // pass address of from | |
112 intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0)); | |
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113 *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr; |
1506 | 114 _from -= Interpreter::stackElementSize; |
0 | 115 } |
116 | |
117 public: | |
118 SlowSignatureHandler(methodHandle method, address from, intptr_t* to) : | |
119 NativeSignatureIterator(method) { | |
120 _from = from; | |
121 _to = to + (is_static() ? 2 : 1); | |
122 } | |
123 }; | |
124 | |
125 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to)) | |
126 methodHandle m(thread, (methodOop)method); | |
127 assert(m->is_native(), "sanity check"); | |
128 // handle arguments | |
129 SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1)); | |
130 // return result handler | |
131 return Interpreter::result_handler(m->result_type()); | |
132 IRT_END |