1 /*
   2  * Copyright (c) 2012, 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_TRACE_TRACESTREAM_HPP
  26 #define SHARE_VM_TRACE_TRACESTREAM_HPP
  27 
  28 #include "utilities/macros.hpp"
  29 
  30 #if INCLUDE_TRACE
  31 
  32 #include "oops/klass.hpp"
  33 #include "oops/method.hpp"
  34 #include "oops/symbol.hpp"
  35 #include "utilities/ostream.hpp"
  36 
  37 class TraceStream : public StackObj {
  38  private:
  39   outputStream& _st;
  40 
  41  public:
  42   TraceStream(outputStream& stream): _st(stream) {}
  43 
  44   void print_val(const char* label, u1 val) {
  45     _st.print("%s = "UINT32_FORMAT, label, val);
  46   }
  47 
  48   void print_val(const char* label, u2 val) {
  49     _st.print("%s = "UINT32_FORMAT, label, val);
  50   }
  51 
  52   void print_val(const char* label, s2 val) {
  53     _st.print("%s = "INT32_FORMAT, label, val);
  54   }
  55 
  56   void print_val(const char* label, u4 val) {
  57     _st.print("%s = "UINT32_FORMAT, label, val);
  58   }
  59 
  60   void print_val(const char* label, s4 val) {
  61     _st.print("%s = "INT32_FORMAT, label, val);
  62   }
  63 
  64   void print_val(const char* label, u8 val) {
  65     _st.print("%s = "UINT64_FORMAT, label, val);
  66   }
  67 
  68   void print_val(const char* label, s8 val) {
  69     _st.print("%s = "INT64_FORMAT, label, val);
  70   }
  71 
  72   void print_val(const char* label, bool val) {
  73     _st.print("%s = %s", label, val ? "true" : "false");
  74   }
  75 
  76   void print_val(const char* label, float val) {
  77     _st.print("%s = %f", label, val);
  78   }
  79 
  80   void print_val(const char* label, double val) {
  81     _st.print("%s = %f", label, val);
  82   }
  83 
  84   // Caller is machine generated code located in traceEventClasses.hpp
  85   // Event<TraceId>::writeEvent() (pseudocode) contains the
  86   // necessary ResourceMark for the resource allocations below.
  87   // See traceEventClasses.xsl for details.
  88   void print_val(const char* label, const Klass* const val) {
  89     const char* description = "NULL";
  90     if (val != NULL) {
  91       Symbol* name = val->name();
  92       if (name != NULL) {
  93         description = name->as_C_string();
  94       }
  95     }
  96     _st.print("%s = %s", label, description);
  97   }
  98 
  99   // Caller is machine generated code located in traceEventClasses.hpp
 100   // Event<TraceId>::writeEvent() (pseudocode) contains the
 101   // necessary ResourceMark for the resource allocations below.
 102   // See traceEventClasses.xsl for details.
 103   void print_val(const char* label, const Method* const val) {
 104     const char* description = "NULL";
 105     if (val != NULL) {
 106       description = val->name_and_sig_as_C_string();
 107     }
 108     _st.print("%s = %s", label, description);
 109   }
 110 
 111   void print_val(const char* label, const char* val) {
 112     _st.print("%s = '%s'", label, val);
 113   }
 114 
 115   void print(const char* val) {
 116     _st.print(val);
 117   }
 118 };
 119 
 120 #endif /* INCLUDE_TRACE */
 121 #endif /* SHARE_VM_TRACE_TRACESTREAM_HPP */