jdk8-mips64-public/hotspot: src/share/vm/ci/ciCPCache.hpp@5eb9169b1a14

7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
Reviewed-by: jrose, never

     1 /*

     2  * Copyright (c) 2009, 2010, 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_CI_CICPCACHE_HPP

    26 #define SHARE_VM_CI_CICPCACHE_HPP

    28 #include "ci/ciClassList.hpp"

    29 #include "ci/ciObject.hpp"

    30 #include "oops/cpCacheOop.hpp"

    32 // ciCPCache

    33 //

    34 // This class represents a constant pool cache.

    35 //

    36 // Note: This class is called ciCPCache as ciConstantPoolCache is used

    37 // for something different.

    38 class ciCPCache : public ciObject {

    39 private:

    40   constantPoolCacheOop get_cpCacheOop() {   // must be called inside a VM_ENTRY_MARK

    41     return (constantPoolCacheOop) get_oop();

    42   }

    44   ConstantPoolCacheEntry* entry_at(int i) {

    45     int raw_index = i;

    46     if (constantPoolCacheOopDesc::is_secondary_index(i))

    47       raw_index = constantPoolCacheOopDesc::decode_secondary_index(i);

    48     return get_cpCacheOop()->entry_at(raw_index);

    49   }

    51 public:

    52   ciCPCache(constantPoolCacheHandle cpcache) : ciObject(cpcache) {}

    54   // What kind of ciObject is this?

    55   bool is_cpcache() const { return true; }

    57   // Get the offset in bytes from the oop to the f1 field of the

    58   // requested entry.

    59   size_t get_f1_offset(int index);

    61   bool is_f1_null_at(int index);

    63   int get_pool_index(int index);

    65   void print();

    66 };

    68 #endif // SHARE_VM_CI_CICPCACHE_HPP

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