jdk8-mips64-public/hotspot: src/share/vm/prims/jvmtiUtil.hpp@f008d3631bd1

6755845: JVM_FindClassFromBoot triggers assertions
Summary: Fixes assertions caused by one jvm_entry calling another, solved by refactoring code and modified gamma test.
Reviewed-by: dholmes, xlu

     1 /*

     2  * Copyright 1999-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 ///////////////////////////////////////////////////////////////

    26 //

    27 // class JvmtiUtil

    28 //

    29 // class for miscellaneous jvmti utility static methods

    30 //

    32 class JvmtiUtil : AllStatic {

    34   static ResourceArea* _single_threaded_resource_area;

    36   static const char* _error_names[];

    37   static const bool  _event_threaded[];

    39 public:

    41   static ResourceArea* single_threaded_resource_area();

    43   static const char* error_name(int num)    { return _error_names[num]; }    // To Do: add range checking

    45   static const bool has_event_capability(jvmtiEvent event_type, const jvmtiCapabilities* capabilities_ptr);

    47   static const bool  event_threaded(int num) {

    48     if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) {

    49       return _event_threaded[num];

    50     }

    51     if (num >= EXT_MIN_EVENT_TYPE_VAL && num <= EXT_MAX_EVENT_TYPE_VAL) {

    52       return false;

    53     }

    54     ShouldNotReachHere();

    55     return false;

    56   }

    57 };

    60 ///////////////////////////////////////////////////////////////

    61 //

    62 // class SafeResourceMark

    63 //

    64 // ResourceMarks that work before threads exist

    65 //

    67 class SafeResourceMark : public ResourceMark {

    69   ResourceArea* safe_resource_area() {

    70     Thread* thread;

    72     if (Threads::number_of_threads() == 0) {

    73       return JvmtiUtil::single_threaded_resource_area();

    74     }

    75     thread = ThreadLocalStorage::thread();

    76     if (thread == NULL) {

    77       return JvmtiUtil::single_threaded_resource_area();

    78     }

    79     return thread->resource_area();

    80   }

    82  public:

    84   SafeResourceMark() : ResourceMark(safe_resource_area()) {}

    86 };

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

src/share/vm/prims/jvmtiUtil.hpp@f008d3631bd1

src/share/vm/prims/jvmtiUtil.hpp