Mercurial > hg > truffle
annotate src/share/vm/prims/jniCheck.hpp @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
author | tschatzl |
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date | Fri, 10 Oct 2014 15:51:58 +0200 |
parents | cc32ccaaf47f |
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rev | line source |
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0 | 1 /* |
7951 | 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_PRIMS_JNICHECK_HPP |
26 #define SHARE_VM_PRIMS_JNICHECK_HPP | |
27 | |
28 #include "runtime/thread.hpp" | |
29 | |
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30 extern "C" { |
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31 // Report a JNI failure caught by -Xcheck:jni. Perform a core dump. |
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32 // Note: two variations -- one to be called when in VM state (e.g. when |
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33 // within IN_VM macro), one to be called when in NATIVE state. |
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34 |
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35 // When in VM state: |
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36 static inline void ReportJNIFatalError(JavaThread* thr, const char *msg) { |
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37 tty->print_cr("FATAL ERROR in native method: %s", msg); |
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38 thr->print_stack(); |
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39 os::abort(true); |
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40 } |
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41 } |
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42 |
0 | 43 // |
44 // Checked JNI routines that are useful for outside of checked JNI | |
45 // | |
46 | |
47 class jniCheck : public AllStatic { | |
48 public: | |
49 static oop validate_handle(JavaThread* thr, jobject obj); | |
50 static oop validate_object(JavaThread* thr, jobject obj); | |
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51 static Klass* validate_class(JavaThread* thr, jclass clazz, bool allow_primitive = false); |
0 | 52 static void validate_class_descriptor(JavaThread* thr, const char* name); |
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53 static void validate_throwable_klass(JavaThread* thr, Klass* klass); |
0 | 54 static void validate_call_object(JavaThread* thr, jobject obj, jmethodID method_id); |
55 static void validate_call_class(JavaThread* thr, jclass clazz, jmethodID method_id); | |
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56 static Method* validate_jmethod_id(JavaThread* thr, jmethodID method_id); |
0 | 57 }; |
1972 | 58 |
59 #endif // SHARE_VM_PRIMS_JNICHECK_HPP |