jdk8-mips64-public/hotspot: src/share/vm/prims/jvm

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

     1 /*

     2  * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.

     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  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_PRIMS_JVM_MISC_HPP

    26 #define SHARE_VM_PRIMS_JVM_MISC_HPP

    28 #include "prims/jni.h"

    29 #include "runtime/handles.hpp"

    31 // Useful entry points shared by JNI and JVM interface.

    32 // We do not allow real JNI or JVM entry point to call each other.

    34 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS);

    36 void trace_class_resolution(Klass* to_class);

    38 /*

    39  * Support for Serialization and RMI. Currently used by HotSpot only.

    40  */

    42 extern "C" {

    44 void JNICALL

    45 JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,

    46                             jlongArray fieldIDs, jcharArray typecodes, jbyteArray data);

    48 void JNICALL

    49 JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj,

    50                             jlongArray fieldIDs, jcharArray typecodes, jbyteArray data);

    52 }

    54 /*

    55  * Support for -Xcheck:jni

    56  */

    58 extern struct JNINativeInterface_* jni_functions_nocheck();

    59 extern struct JNINativeInterface_* jni_functions_check();

    61 /*

    62  * Support for swappable jni function table.

    63  */

    64 extern struct JNINativeInterface_* jni_functions();

    65 extern void copy_jni_function_table(const struct JNINativeInterface_* new_function_table);

    67 // Support for fast JNI accessors

    68 extern "C" {

    69   typedef jboolean (JNICALL *GetBooleanField_t)

    70       (JNIEnv *env, jobject obj, jfieldID fieldID);

    71   typedef jbyte (JNICALL *GetByteField_t)

    72       (JNIEnv *env, jobject obj, jfieldID fieldID);

    73   typedef jchar (JNICALL *GetCharField_t)

    74       (JNIEnv *env, jobject obj, jfieldID fieldID);

    75   typedef jshort (JNICALL *GetShortField_t)

    76       (JNIEnv *env, jobject obj, jfieldID fieldID);

    77   typedef jint (JNICALL *GetIntField_t)

    78       (JNIEnv *env, jobject obj, jfieldID fieldID);

    79   typedef jlong (JNICALL *GetLongField_t)

    80       (JNIEnv *env, jobject obj, jfieldID fieldID);

    81   typedef jfloat (JNICALL *GetFloatField_t)

    82       (JNIEnv *env, jobject obj, jfieldID fieldID);

    83   typedef jdouble (JNICALL *GetDoubleField_t)

    84     (JNIEnv *env, jobject obj, jfieldID fieldID);

    85 }

    87 void    quicken_jni_functions();

    88 address jni_GetBooleanField_addr();

    89 address jni_GetByteField_addr();

    90 address jni_GetCharField_addr();

    91 address jni_GetShortField_addr();

    92 address jni_GetIntField_addr();

    93 address jni_GetLongField_addr();

    94 address jni_GetFloatField_addr();

    95 address jni_GetDoubleField_addr();

    97 #endif // SHARE_VM_PRIMS_JVM_MISC_HPP

src/share/vm/prims/jvm_misc.hpp@4c84d351cca9

src/share/vm/prims/jvm_misc.hpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/prims/jvm_misc.hpp@4c84d351cca9

src/share/vm/prims/jvm_misc.hpp