Mercurial > hg > graal-jvmci-8
comparison src/share/vm/prims/whitebox.cpp @ 5915:2d503de963b3
7148152: Add whitebox testing API to HotSpot
Summary: Add an internal testing API to HotSpot to enable more targeted testing of vm functionality
Reviewed-by: phh, dholmes
author | mgerdin |
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date | Thu, 23 Feb 2012 14:58:35 +0100 |
parents | |
children | 51612f0c0a79 |
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4956:4ab89de75552 | 5915:2d503de963b3 |
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1 /* | |
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | |
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 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 #include "precompiled.hpp" | |
26 | |
27 #include "jni.h" | |
28 | |
29 #include "memory/universe.hpp" | |
30 #include "oops/oop.inline.hpp" | |
31 #include "prims/whitebox.hpp" | |
32 #include "runtime/interfaceSupport.hpp" | |
33 #include "runtime/os.hpp" | |
34 #include "utilities/debug.hpp" | |
35 | |
36 #ifndef SERIALGC | |
37 #include "gc_implementation/g1/concurrentMark.hpp" | |
38 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
39 #include "gc_implementation/g1/heapRegionRemSet.hpp" | |
40 #endif // !SERIALGC | |
41 | |
42 bool WhiteBox::_used = false; | |
43 | |
44 // Entry macro to transition from JNI to VM state. | |
45 | |
46 #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header) | |
47 #define WB_END JNI_END | |
48 | |
49 // Definitions of functions exposed via Whitebox API | |
50 | |
51 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) | |
52 return (jlong)(void*)JNIHandles::resolve(obj); | |
53 WB_END | |
54 | |
55 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) | |
56 return heapOopSize; | |
57 WB_END | |
58 | |
59 #ifndef SERIALGC | |
60 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) | |
61 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
62 oop result = JNIHandles::resolve(obj); | |
63 const HeapRegion* hr = g1->heap_region_containing(result); | |
64 return hr->isHumongous(); | |
65 WB_END | |
66 | |
67 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) | |
68 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
69 size_t nr = g1->free_regions(); | |
70 return (jlong)nr; | |
71 WB_END | |
72 | |
73 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) | |
74 G1CollectedHeap* g1 = G1CollectedHeap::heap(); | |
75 ConcurrentMark* cm = g1->concurrent_mark(); | |
76 return cm->concurrent_marking_in_progress(); | |
77 WB_END | |
78 | |
79 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) | |
80 return (jint)HeapRegion::GrainBytes; | |
81 WB_END | |
82 #endif // !SERIALGC | |
83 | |
84 #define CC (char*) | |
85 | |
86 static JNINativeMethod methods[] = { | |
87 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, | |
88 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, | |
89 #ifndef SERIALGC | |
90 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, | |
91 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, | |
92 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, | |
93 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, | |
94 #endif // !SERIALGC | |
95 }; | |
96 | |
97 #undef CC | |
98 | |
99 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) | |
100 { | |
101 if (WhiteBoxAPI) { | |
102 // Make sure that wbclass is loaded by the null classloader | |
103 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); | |
104 Handle loader(ikh->class_loader()); | |
105 if (loader.is_null()) { | |
106 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI | |
107 jint result = env->RegisterNatives(wbclass, methods, sizeof(methods)/sizeof(methods[0])); | |
108 if (result == 0) { | |
109 WhiteBox::set_used(); | |
110 } | |
111 } | |
112 } | |
113 } | |
114 JVM_END |