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8028595: WhiteBox API for stress testing of TieredCompilation

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Reviewed-by: kvn
This commit is contained in:
Igor Ignatyev 2014-12-16 17:56:24 +03:00
parent 57ac8bbd17
commit e71ea0c5a9
2 changed files with 203 additions and 8 deletions
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54
hotspot/src/share/vm/prims/whitebox.cpp
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@ -69,6 +69,14 @@ PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
bool WhiteBox::_used = false;
volatile bool WhiteBox::compilation_locked = false;
class VM_WhiteBoxOperation : public VM_Operation {
public:
VM_WhiteBoxOperation() { }
VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
bool allow_nested_vm_operations() const { return true; }
};
WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
return (jlong)(void*)JNIHandles::resolve(obj);
WB_END
@ -404,6 +412,43 @@ static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobje
return env->FromReflectedMethod(method);
}
// Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
private:
int _result;
const bool _make_not_entrant;
public:
VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
_result(0), _make_not_entrant(make_not_entrant) { }
int result() const { return _result; }
void doit() {
for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
if (t->has_last_Java_frame()) {
for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
frame* f = fst.current();
if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
RegisterMap* reg_map = fst.register_map();
Deoptimization::deoptimize(t, *f, reg_map);
if (_make_not_entrant) {
nmethod* nm = CodeCache::find_nmethod(f->pc());
assert(nm != NULL, "sanity check");
nm->make_not_entrant();
}
++_result;
}
}
}
}
}
};
WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
VMThread::execute(&op);
return op.result();
WB_END
WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
MutexLockerEx mu(Compile_lock);
CodeCache::mark_all_nmethods_for_deoptimization();
@ -526,13 +571,6 @@ WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobjec
return (mh->queued_for_compilation() || nm != NULL);
WB_END
class VM_WhiteBoxOperation : public VM_Operation {
public:
VM_WhiteBoxOperation() { }
VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
bool allow_nested_vm_operations() const { return true; }
};
class AlwaysFalseClosure : public BoolObjectClosure {
public:
bool do_object_b(oop p) { return false; }
@ -761,7 +799,6 @@ WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring
}
WB_END
WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
WhiteBox::compilation_locked = true;
WB_END
@ -1201,6 +1238,7 @@ static JNINativeMethod methods[] = {
{CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
{CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
#endif // INCLUDE_NMT
{CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
{CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
{CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
(void*)&WB_DeoptimizeMethod },