jdk8-mips64-public/hotspot: src/share/vm/trace/traceStream.hpp@80ee2541504e (annotated)

src/share/vm/trace/traceStream.hpp@80ee2541504e (annotated)

src/share/vm/trace/traceStream.hpp

Thu, 23 Aug 2018 22:56:32 +0000

author: phh
date: Thu, 23 Aug 2018 22:56:32 +0000
changeset 9482: 80ee2541504e
parent 9327: f96fcd9e1e1b
child 9572: 624a0741915c
permissions: -rw-r--r--

8145788: JVM crashes with -XX:+EnableTracing
Summary: Events can trigger before ResourceMark is usable: move use from writeEvent() to print_val().
Reviewed-by: dholmes, ysuenaga, mlarsson

 /*
  * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_TRACE_TRACESTREAM_HPP
 #define SHARE_VM_TRACE_TRACESTREAM_HPP
 #include "utilities/macros.hpp"
 #if INCLUDE_TRACE
 #include "memory/resourceArea.hpp"
 #include "oops/klass.hpp"
 #include "oops/method.hpp"
 #include "oops/symbol.hpp"
 #include "utilities/ostream.hpp"
 class TraceStream : public StackObj {
  private:
   outputStream& _st;
  public:
   TraceStream(outputStream& stream): _st(stream) {}
   void print_val(const char* label, u1 val) {
     _st.print("%s = " UINT32_FORMAT, label, val);
   }
   void print_val(const char* label, u2 val) {
     _st.print("%s = " UINT32_FORMAT, label, val);
   }
   void print_val(const char* label, s2 val) {
     _st.print("%s = " INT32_FORMAT, label, val);
   }
   void print_val(const char* label, u4 val) {
     _st.print("%s = " UINT32_FORMAT, label, val);
   }
   void print_val(const char* label, s4 val) {
     _st.print("%s = " INT32_FORMAT, label, val);
   }
   void print_val(const char* label, u8 val) {
     _st.print("%s = " UINT64_FORMAT, label, val);
   }
   void print_val(const char* label, s8 val) {
     _st.print("%s = " INT64_FORMAT, label, (int64_t) val);
   }
   void print_val(const char* label, bool val) {
     _st.print("%s = %s", label, val ? "true" : "false");
   }
   void print_val(const char* label, float val) {
     _st.print("%s = %f", label, val);
   }
   void print_val(const char* label, double val) {
     _st.print("%s = %f", label, val);
   }
   void print_val(const char* label, const Klass* const val) {
     ResourceMark rm;
     const char* description = "NULL";
     if (val != NULL) {
       Symbol* name = val->name();
       if (name != NULL) {
         description = name->as_C_string();
       }
     }
     _st.print("%s = %s", label, description);
   }
   void print_val(const char* label, const Method* const val) {
     ResourceMark rm;
     const char* description = "NULL";
     if (val != NULL) {
       description = val->name_and_sig_as_C_string();
     }
     _st.print("%s = %s", label, description);
   }
   void print_val(const char* label, const char* val) {
     _st.print("%s = '%s'", label, val);
   }
   void print(const char* val) {
     _st.print("%s", val);
   }
 };
 #endif // INCLUDE_TRACE
 #endif // SHARE_VM_TRACE_TRACESTREAM_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/trace/traceStream.hpp@80ee2541504e (annotated)

src/share/vm/trace/traceStream.hpp