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8153514: Whitebox API should allow compilation of <clinit>

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Added Whitebox API method to trigger compilation of static initializer.

Reviewed-by: zmajo, kvn, iignatyev
This commit is contained in:
Tobias Hartmann 2016-04-07 16:51:37 +02:00
parent 7502a7a7f2
commit a6c687cd6a
2 changed files with 18 additions and 6 deletions
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23
hotspot/src/share/vm/prims/whitebox.cpp
View file

@ -637,17 +637,26 @@ WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject m
return result;
WB_END
WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
// Screen for unavailable/bad comp level
if (CompileBroker::compiler(comp_level) == NULL) {
bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
// Screen for unavailable/bad comp level or null method
if (method == NULL || CompileBroker::compiler(comp_level) == NULL) {
return false;
}
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
methodHandle mh(THREAD, method);
nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
MutexLockerEx mu(Compile_lock);
return (mh->queued_for_compilation() || nm != NULL);
}
WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
WB_END
WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
return WhiteBox::compile_method(ikh->class_initializer(), comp_level, InvocationEntryBci, THREAD);
WB_END
WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
@ -1643,6 +1652,8 @@ static JNINativeMethod methods[] = {
CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
{CC"enqueueMethodForCompilation0",
CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
{CC"enqueueInitializerForCompilation0",
CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
{CC"clearMethodState0",
CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
{CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},

1
hotspot/src/share/vm/prims/whitebox.hpp
View file

@ -77,6 +77,7 @@ class WhiteBox : public AllStatic {
static void register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread,
JNINativeMethod* method_array, int method_count);
static void register_extended(JNIEnv* env, jclass wbclass, JavaThread* thread);
static bool compile_method(Method* method, int comp_level, int bci, Thread* THREAD);
};