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annotate src/share/vm/oops/instanceClassLoaderKlass.hpp @ 14649:f6301b007a16

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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 de6a9e811145
children 4ca6dc0799b6
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1 /*
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2 * Copyright (c) 2011, 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 SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
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26 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
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27
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28 #include "oops/instanceKlass.hpp"
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29 #include "utilities/macros.hpp"
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30
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31 // An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
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32 // not add any field. It is added to walk the dependencies for the class loader
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33 // key that this class loader points to. This is how the loader_data graph is
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34 // walked and dependant class loaders are kept alive. I thought we walked
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35 // the list later?
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36
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37 class InstanceClassLoaderKlass: public InstanceKlass {
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38 friend class VMStructs;
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39 friend class InstanceKlass;
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40
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41 // Constructor
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42 InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
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43 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
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44
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45 public:
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46 virtual bool oop_is_instanceClassLoader() const { return true; }
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47
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48 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
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49
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50 // Iterators
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51 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
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52 return oop_oop_iterate_v(obj, blk);
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53 }
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54 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
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55 return oop_oop_iterate_v_m(obj, blk, mr);
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56 }
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57
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58 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
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59 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
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60 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);
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61
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62 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
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63 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
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64
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65 #if INCLUDE_ALL_GCS
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66 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
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67 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
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68
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69 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
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70 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
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71 #endif // INCLUDE_ALL_GCS
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72
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73 // Garbage collection
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74 void oop_follow_contents(oop obj);
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75
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76 // Parallel Scavenge and Parallel Old
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77 PARALLEL_GC_DECLS
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78 };
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79
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80 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP