72 class VM_WhiteBoxOperation : public VM_Operation {
73 public:
74 VM_WhiteBoxOperation() { }
75 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
76 bool allow_nested_vm_operations() const { return true; }
77 };
78
79
80 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
81 return (jlong)(void*)JNIHandles::resolve(obj);
82 WB_END
83
84 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
85 return heapOopSize;
86 WB_END
87
88 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
89 return os::vm_page_size();
90 WB_END
91
92 class WBIsKlassAliveClosure : public KlassClosure {
93 Symbol* _name;
94 bool _found;
95 public:
96 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
97
98 void do_klass(Klass* k) {
99 if (_found) return;
100 Symbol* ksym = k->name();
101 if (ksym->fast_compare(_name) == 0) {
102 _found = true;
103 }
104 }
105
106 bool found() const {
107 return _found;
108 }
109 };
110
111 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
1284 }
1285 } else {
1286 // Registration failed unexpectedly.
1287 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1288 method_array[i].name, method_array[i].signature);
1289 env->UnregisterNatives(wbclass);
1290 break;
1291 }
1292 }
1293 }
1294 }
1295
1296 #define CC (char*)
1297
1298 static JNINativeMethod methods[] = {
1299 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1300 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1301 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1302 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1303 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1304 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1305 {CC"parseCommandLine",
1306 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1307 (void*) &WB_ParseCommandLine
1308 },
1309 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
1310 (void*)&WB_AddToBootstrapClassLoaderSearch},
1311 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
1312 (void*)&WB_AddToSystemClassLoaderSearch},
1313 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1314 (void*)&WB_GetCompressedOopsMaxHeapSize},
1315 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1316 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1317 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1318 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1319 #if INCLUDE_ALL_GCS
1320 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1321 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1322 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1323 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
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72 class VM_WhiteBoxOperation : public VM_Operation {
73 public:
74 VM_WhiteBoxOperation() { }
75 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
76 bool allow_nested_vm_operations() const { return true; }
77 };
78
79
80 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
81 return (jlong)(void*)JNIHandles::resolve(obj);
82 WB_END
83
84 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
85 return heapOopSize;
86 WB_END
87
88 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
89 return os::vm_page_size();
90 WB_END
91
92 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
93 return os::large_page_size();
94 WB_END
95
96 class WBIsKlassAliveClosure : public KlassClosure {
97 Symbol* _name;
98 bool _found;
99 public:
100 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
101
102 void do_klass(Klass* k) {
103 if (_found) return;
104 Symbol* ksym = k->name();
105 if (ksym->fast_compare(_name) == 0) {
106 _found = true;
107 }
108 }
109
110 bool found() const {
111 return _found;
112 }
113 };
114
115 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
1288 }
1289 } else {
1290 // Registration failed unexpectedly.
1291 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1292 method_array[i].name, method_array[i].signature);
1293 env->UnregisterNatives(wbclass);
1294 break;
1295 }
1296 }
1297 }
1298 }
1299
1300 #define CC (char*)
1301
1302 static JNINativeMethod methods[] = {
1303 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1304 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1305 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1306 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1307 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1308 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1309 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1310 {CC"parseCommandLine",
1311 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1312 (void*) &WB_ParseCommandLine
1313 },
1314 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
1315 (void*)&WB_AddToBootstrapClassLoaderSearch},
1316 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
1317 (void*)&WB_AddToSystemClassLoaderSearch},
1318 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1319 (void*)&WB_GetCompressedOopsMaxHeapSize},
1320 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1321 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1322 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1323 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1324 #if INCLUDE_ALL_GCS
1325 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1326 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1327 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1328 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
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