1 /*
   2  * Copyright (c) 1999, 2013, 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  */
  24 
  25 #ifndef SHARE_VM_PRIMS_JVMTITRACE_HPP
  26 #define SHARE_VM_PRIMS_JVMTITRACE_HPP
  27 
  28 #include "classfile/systemDictionary.hpp"
  29 #include "jvmtifiles/jvmti.h"
  30 #include "oops/objArrayOop.hpp"
  31 #include "prims/jvmtiEnvThreadState.hpp"
  32 #include "prims/jvmtiEventController.hpp"
  33 #include "prims/jvmtiUtil.hpp"
  34 #include "runtime/stackValueCollection.hpp"
  35 #include "runtime/vmOperations.hpp"
  36 
  37 ///////////////////////////////////////////////////////////////
  38 //
  39 // class JvmtiTrace
  40 //
  41 // Support for JVMTI tracing code
  42 //
  43 
  44 // Support tracing except in product build on the client compiler
  45 #ifndef PRODUCT
  46 #define JVMTI_TRACE
  47 #else
  48 #ifdef COMPILER2
  49 #define JVMTI_TRACE
  50 #endif
  51 #endif
  52 
  53 #ifdef JVMTI_TRACE
  54 
  55 class JvmtiTrace : AllStatic {
  56 
  57   static bool        _initialized;
  58   static bool        _on;
  59   static bool        _trace_event_controller;
  60   static jbyte       _trace_flags[];
  61   static jbyte       _event_trace_flags[];
  62   static const char* _event_names[];
  63   static jint        _max_function_index;
  64   static jint        _max_event_index;
  65   static short       _exclude_functions[];
  66   static const char* _function_names[];
  67 
  68 public:
  69 
  70   enum {
  71     SHOW_IN =              01,
  72     SHOW_OUT =             02,
  73     SHOW_ERROR =           04,
  74     SHOW_IN_DETAIL =      010,
  75     SHOW_OUT_DETAIL =     020,
  76     SHOW_EVENT_TRIGGER =  040,
  77     SHOW_EVENT_SENT =    0100
  78   };
  79 
  80   static bool tracing()                     { return _on; }
  81   static bool trace_event_controller()      { return _trace_event_controller; }
  82   static jbyte trace_flags(int num)         { return _trace_flags[num]; }
  83   static jbyte event_trace_flags(int num)   { return _event_trace_flags[num]; }
  84   static const char* function_name(int num) { return _function_names[num]; } // To Do: add range checking
  85 
  86   static const char* event_name(int num) {
  87     static char* ext_event_name = (char*)"(extension event)";
  88     if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) {
  89       return _event_names[num];
  90     } else {
  91       return ext_event_name;
  92     }
  93   }
  94 
  95   static const char* enum_name(const char** names, const jint* values, jint value);
  96 
  97   static void initialize();
  98   static void shutdown();
  99 
 100   // return a valid string no matter what state the thread is in
 101   static const char *safe_get_thread_name(Thread *thread);
 102 
 103   // return the name of the current thread
 104   static const char *safe_get_current_thread_name();
 105 
 106   // return a valid string no matter what the state of k_mirror
 107   static const char *get_class_name(oop k_mirror);
 108 };
 109 
 110 #endif /*JVMTI_TRACE */
 111 
 112 #endif // SHARE_VM_PRIMS_JVMTITRACE_HPP