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8176100: [REDO][REDO] G1 Needs pre barrier on dereference of weak JNI handles

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Reviewed-by: kbarrett, coleenp, tschatzl
This commit is contained in:
Mikael Gerdin 2017-03-22 15:25:21 +01:00
parent 6b15d9a82b
commit cc1aaab7e9
42 changed files with 1221 additions and 434 deletions
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10
hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@ -406,10 +406,12 @@ int CppInterpreter::native_entry(Method* method, intptr_t UNUSED, TRAPS) {
// oop_temp where the garbage collector can see it before
// we release the handle it might be protected by.
if (handler->result_type() == &ffi_type_pointer) {
if (result[0])
istate->set_oop_temp(*(oop *) result[0]);
else
if (result[0] == 0) {
istate->set_oop_temp(NULL);
} else {
jobject handle = reinterpret_cast<jobject>(result[0]);
istate->set_oop_temp(JNIHandles::resolve(handle));
}
}
// Reset handle block