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 */