--- a/hotspot/src/share/vm/prims/whitebox.cpp Thu May 29 09:41:07 2014 +0000
+++ b/hotspot/src/share/vm/prims/whitebox.cpp Fri May 30 17:20:48 2014 +0400
@@ -503,6 +503,159 @@
}
WB_END
+template <typename T>
+static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
+ if (name == NULL) {
+ return false;
+ }
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ const char* flag_name = env->GetStringUTFChars(name, NULL);
+ bool result = (*TAt)(flag_name, value);
+ env->ReleaseStringUTFChars(name, flag_name);
+ return result;
+}
+
+template <typename T>
+static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
+ if (name == NULL) {
+ return false;
+ }
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ const char* flag_name = env->GetStringUTFChars(name, NULL);
+ bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
+ env->ReleaseStringUTFChars(name, flag_name);
+ return result;
+}
+
+template <typename T>
+static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
+ ResourceMark rm(thread);
+ jclass clazz = env->FindClass(name->as_C_string());
+ CHECK_JNI_EXCEPTION_(env, NULL);
+ jmethodID methodID = env->GetStaticMethodID(clazz,
+ vmSymbols::valueOf_name()->as_C_string(),
+ sig->as_C_string());
+ CHECK_JNI_EXCEPTION_(env, NULL);
+ jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
+ CHECK_JNI_EXCEPTION_(env, NULL);
+ return result;
+}
+
+static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
+ return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
+}
+static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
+ return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
+}
+static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
+ return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
+}
+/* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
+ return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
+}*/
+static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
+ return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
+}
+
+WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
+ bool result;
+ if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ return booleanBox(thread, env, result);
+ }
+ return NULL;
+WB_END
+
+WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
+ intx result;
+ if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ return longBox(thread, env, result);
+ }
+ return NULL;
+WB_END
+
+WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
+ uintx result;
+ if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ return longBox(thread, env, result);
+ }
+ return NULL;
+WB_END
+
+WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
+ uint64_t result;
+ if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ return longBox(thread, env, result);
+ }
+ return NULL;
+WB_END
+
+WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
+ double result;
+ if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ return doubleBox(thread, env, result);
+ }
+ return NULL;
+WB_END
+
+WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
+ ccstr ccstrResult;
+ if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ jstring result = env->NewStringUTF(ccstrResult);
+ CHECK_JNI_EXCEPTION_(env, NULL);
+ return result;
+ }
+ return NULL;
+WB_END
+
+WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
+ bool result = value == JNI_TRUE ? true : false;
+ SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
+WB_END
+
+WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
+ intx result = value;
+ SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
+WB_END
+
+WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
+ uintx result = value;
+ SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
+WB_END
+
+WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
+ uint64_t result = value;
+ SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
+WB_END
+
+WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
+ double result = value;
+ SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
+WB_END
+
+WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
+ ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
+ const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
+ ccstr ccstrResult = ccstrValue;
+ bool needFree;
+ {
+ ThreadInVMfromNative ttvfn(thread); // back to VM
+ needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
+ }
+ if (value != NULL) {
+ env->ReleaseStringUTFChars(value, ccstrValue);
+ }
+ if (needFree) {
+ FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
+ }
+WB_END
+
+
WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
ResourceMark rm(THREAD);
int len;
@@ -561,11 +714,7 @@
return result;
}
- clazz = env->FindClass(vmSymbols::java_lang_Integer()->as_C_string());
- CHECK_JNI_EXCEPTION_(env, NULL);
- jmethodID constructor = env->GetMethodID(clazz, vmSymbols::object_initializer_name()->as_C_string(), vmSymbols::int_void_signature()->as_C_string());
- CHECK_JNI_EXCEPTION_(env, NULL);
- jobject obj = env->NewObject(clazz, constructor, code->comp_level());
+ jobject obj = integerBox(thread, env, code->comp_level());
CHECK_JNI_EXCEPTION_(env, NULL);
env->SetObjectArrayElement(result, 0, obj);
@@ -695,7 +844,26 @@
CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
{CC"clearMethodState",
CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
- {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
+ {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
+ {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
+ {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
+ {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
+ {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
+ {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
+ (void*)&WB_SetStringVMFlag},
+ {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
+ (void*)&WB_GetBooleanVMFlag},
+ {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
+ (void*)&WB_GetIntxVMFlag},
+ {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
+ (void*)&WB_GetUintxVMFlag},
+ {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
+ (void*)&WB_GetUint64VMFlag},
+ {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
+ (void*)&WB_GetDoubleVMFlag},
+ {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
+ (void*)&WB_GetStringVMFlag},
+ {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
{CC"fullGC", CC"()V", (void*)&WB_FullGC },
{CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
{CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },