jdk8-mips64-public/hotspot: src/share/vm/runtime/dtraceJSDT.hpp@b92c45f2bc75

7016023: Enable building ARM and PPC from src/closed repository
Reviewed-by: dholmes, bdelsart

     1 /*

     2  * Copyright (c) 1997, 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_RUNTIME_DTRACEJSDT_HPP

    26 #define SHARE_VM_RUNTIME_DTRACEJSDT_HPP

    28 #include "code/nmethod.hpp"

    29 #ifdef TARGET_ARCH_x86

    30 # include "nativeInst_x86.hpp"

    31 #endif

    32 #ifdef TARGET_ARCH_sparc

    33 # include "nativeInst_sparc.hpp"

    34 #endif

    35 #ifdef TARGET_ARCH_zero

    36 # include "nativeInst_zero.hpp"

    37 #endif

    38 #ifdef TARGET_ARCH_arm

    39 # include "nativeInst_arm.hpp"

    40 #endif

    41 #ifdef TARGET_ARCH_ppc

    42 # include "nativeInst_ppc.hpp"

    43 #endif

    45 class RegisteredProbes;

    46 typedef jlong OpaqueProbes;

    48 class DTraceJSDT : AllStatic {

    49  private:

    51   static int pd_activate(void* moduleBaseAddress, jstring module,

    52       jint providers_count, JVM_DTraceProvider* providers);

    53   static void pd_dispose(int handle);

    54   static jboolean pd_is_supported();

    56  public:

    58   static OpaqueProbes activate(

    59       jint version, jstring module_name, jint providers_count,

    60       JVM_DTraceProvider* providers, TRAPS);

    61   static jboolean is_probe_enabled(jmethodID method);

    62   static void dispose(OpaqueProbes handle);

    63   static jboolean is_supported();

    64 };

    66 class RegisteredProbes : public CHeapObj {

    67  private:

    68   nmethod** _nmethods;      // all the probe methods

    69   size_t    _count;         // number of probe methods

    70   int       _helper_handle; // DTrace-assigned identifier

    72  public:

    73   RegisteredProbes(size_t count) {

    74     _count = count;

    75     _nmethods = NEW_C_HEAP_ARRAY(nmethod*, count);

    76   }

    78   ~RegisteredProbes() {

    79     for (size_t i = 0; i < _count; ++i) {

    80       // Let the sweeper reclaim it

    81       _nmethods[i]->make_not_entrant();

    82       _nmethods[i]->method()->clear_code();

    83     }

    84     FREE_C_HEAP_ARRAY(nmethod*, _nmethods);

    85     _nmethods = NULL;

    86     _count = 0;

    87   }

    89   static RegisteredProbes* toRegisteredProbes(OpaqueProbes p) {

    90     return (RegisteredProbes*)(intptr_t)p;

    91   }

    93   static OpaqueProbes toOpaqueProbes(RegisteredProbes* p) {

    94     return (OpaqueProbes)(intptr_t)p;

    95   }

    97   void set_helper_handle(int handle) { _helper_handle = handle; }

    98   int helper_handle() const { return _helper_handle; }

   100   nmethod* nmethod_at(size_t i) {

   101     assert(i >= 0 && i < _count, "bad nmethod index");

   102     return _nmethods[i];

   103   }

   105   void nmethod_at_put(size_t i, nmethod* nm) {

   106     assert(i >= 0 && i < _count, "bad nmethod index");

   107     _nmethods[i] = nm;

   108   }

   109 };

   111 #endif // SHARE_VM_RUNTIME_DTRACEJSDT_HPP

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