jdk8-mips64-public/hotspot: src/share/vm/jfr/writers/jfrWriterHost.inline.hpp@db357034b763

8217647: JFR: recordings on 32-bit systems unreadable
Reviewed-by: egahlin
Contributed-by: boris.ulasevich@bell-sw.com, markus.gronlund@oracle.com

     1 /*

     2  * Copyright (c) 2016, 2018, 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_JFR_WRITERS_JFRWRITERHOST_INLINE_HPP

    26 #define SHARE_VM_JFR_WRITERS_JFRWRITERHOST_INLINE_HPP

    28 #include "classfile/javaClasses.hpp"

    29 #include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp"

    30 #include "jfr/recorder/service/jfrOptionSet.hpp"

    31 #include "jfr/writers/jfrEncoding.hpp"

    32 #include "jfr/writers/jfrWriterHost.hpp"

    33 #include "memory/resourceArea.hpp"

    34 #include "oops/oop.hpp"

    35 #include "oops/symbol.hpp"

    37 inline bool compressed_integers() {

    38   static const bool comp_integers = JfrOptionSet::compressed_integers();

    39   return comp_integers;

    40 }

    42 template <typename BE, typename IE, typename WriterPolicyImpl >

    43 template <typename T>

    44 inline void WriterHost<BE, IE, WriterPolicyImpl>::write_padded(T value) {

    45   write_padded(&value, 1);

    46 }

    48 template <typename BE, typename IE, typename WriterPolicyImpl >

    49 template <typename T>

    50 inline void WriterHost<BE, IE, WriterPolicyImpl>::write_padded(const T* value, size_t len) {

    51   assert(value != NULL, "invariant");

    52   assert(len > 0, "invariant");

    53   u1* const pos = ensure_size(sizeof(T) * len);

    54   if (pos) {

    55     this->set_current_pos(write_padded(value, len, pos));

    56   }

    57 }

    59 template <typename BE, typename IE, typename WriterPolicyImpl >

    60 template <typename T>

    61 inline u1* WriterHost<BE, IE, WriterPolicyImpl>::write_padded(const T* value, size_t len, u1* pos) {

    62   assert(value != NULL, "invariant");

    63   assert(len > 0, "invariant");

    64   assert(pos != NULL, "invariant");

    65   return _compressed_integers ? IE::write_padded(value, len, pos) : BE::write_padded(value, len, pos);

    66 }

    68 template <typename BE, typename IE, typename WriterPolicyImpl >

    69 template <typename T>

    70 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(const T* value, size_t len) {

    71   assert(value != NULL, "invariant");

    72   assert(len > 0, "invariant");

    73   u1* const pos = ensure_size(sizeof(T) * len);

    74   if (pos) {

    75     this->set_current_pos(write(value, len, pos));

    76   }

    77 }

    79 template <typename BE, typename IE, typename WriterPolicyImpl >

    80 template <typename T>

    81 inline u1* WriterHost<BE, IE, WriterPolicyImpl>::write(const T* value, size_t len, u1* pos) {

    82   assert(value != NULL, "invariant");

    83   assert(len > 0, "invariant");

    84   assert(pos != NULL, "invariant");

    85   return _compressed_integers ? IE::write(value, len, pos) : BE::write(value, len, pos);

    86 }

    88 template <typename BE, typename IE, typename WriterPolicyImpl>

    89 void WriterHost<BE, IE, WriterPolicyImpl>::write_utf8(const char* value) {

    90   if (NULL == value) {

    91     // only write encoding byte indicating NULL string

    92     write<u1>(NULL_STRING);

    93     return;

    94   }

    95   write<u1>(UTF8); // designate encoding

    96   const jint len = MIN2<jint>(max_jint, (jint)strlen(value));

    97   write(len);

    98   if (len > 0) {

    99     be_write(value, len);

   100   }

   101 }

   103 template <typename BE, typename IE, typename WriterPolicyImpl>

   104 void WriterHost<BE, IE, WriterPolicyImpl>::write_utf16(const jchar* value, jint len) {

   105   assert(value != NULL, "invariant");

   106   write((u1)UTF16); // designate encoding

   107   write(len);

   108   if (len > 0) {

   109     write(value, len);

   110   }

   111 }

   113 template <typename BE, typename IE, typename WriterPolicyImpl >

   114 template <typename T>

   115 inline void WriterHost<BE, IE, WriterPolicyImpl>::be_write(T value) {

   116   u1* const pos = ensure_size(sizeof(T));

   117   if (pos) {

   118     this->set_current_pos(BE::be_write(&value, 1, pos));

   119   }

   120 }

   122 template <typename BE, typename IE, typename WriterPolicyImpl >

   123 template <typename T>

   124 inline void WriterHost<BE, IE, WriterPolicyImpl>::be_write(const T* value, size_t len) {

   125   assert(value != NULL, "invariant");

   126   assert(len > 0, "invariant");

   127   u1* const pos = ensure_size(sizeof(T) * len);

   128   if (pos) {

   129     this->set_current_pos(BE::be_write(value, len, pos));

   130   }

   131 }

   133 template <typename BE, typename IE, typename WriterPolicyImpl >

   134 template <typename StorageType>

   135 inline WriterHost<BE, IE, WriterPolicyImpl>::WriterHost(StorageType* storage, Thread* thread) :

   136   WriterPolicyImpl(storage, thread),

   137   _compressed_integers(compressed_integers()) {

   138 }

   140 template <typename BE, typename IE, typename WriterPolicyImpl >

   141 template <typename StorageType>

   142 inline WriterHost<BE, IE, WriterPolicyImpl>::WriterHost(StorageType* storage, size_t size) :

   143   WriterPolicyImpl(storage, size),

   144   _compressed_integers(compressed_integers()) {

   145 }

   147 template <typename BE, typename IE, typename WriterPolicyImpl >

   148 inline WriterHost<BE, IE, WriterPolicyImpl>::WriterHost(Thread* thread) :

   149   WriterPolicyImpl(thread),

   150   _compressed_integers(compressed_integers()) {

   151 }

   153 // Extra size added as a safety cushion when dimensioning memory.

   154 // With varint encoding, the worst case is

   155 // associated with writing negative values.

   156 // For example, writing a negative s1 (-1)

   157 // will encode as 0xff 0x0f (2 bytes).

   158 // In this example, the sizeof(T) == 1 and length == 1,

   159 // but the implementation will need to dimension

   160 // 2 bytes for the encoding.

   161 // Hopefully, negative values should be relatively rare.

   162 static const size_t size_safety_cushion = 1;

   164 template <typename BE, typename IE, typename WriterPolicyImpl>

   165 inline u1* WriterHost<BE, IE, WriterPolicyImpl>::ensure_size(size_t requested) {

   166   if (!this->is_valid()) {

   167     // cancelled

   168     return NULL;

   169   }

   170   if (this->available_size() < requested + size_safety_cushion) {

   171     if (!this->accommodate(this->used_size(), requested + size_safety_cushion)) {

   172       this->cancel();

   173       return NULL;

   174     }

   175   }

   176   assert(requested + size_safety_cushion <= this->available_size(), "invariant");

   177   return this->current_pos();

   178 }

   180 template <typename BE, typename IE, typename WriterPolicyImpl>

   181 template <typename T>

   182 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(T value) {

   183   write(&value, 1);

   184 }

   186 template <typename BE, typename IE, typename WriterPolicyImpl>

   187 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(bool value) {

   188   be_write((u1)value);

   189 }

   191 template <typename BE, typename IE, typename WriterPolicyImpl>

   192 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(float value) {

   193   be_write(*(u4*)&(value));

   194 }

   196 template <typename BE, typename IE, typename WriterPolicyImpl>

   197 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(double value) {

   198   be_write(*(u8*)&(value));

   199 }

   201 template <typename BE, typename IE, typename WriterPolicyImpl>

   202 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(const char* value) {

   203   // UTF-8, max_jint len

   204   write_utf8(value);

   205 }

   207 template <typename BE, typename IE, typename WriterPolicyImpl>

   208 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(char* value) {

   209   write(const_cast<const char*>(value));

   210 }

   212 template <typename BE, typename IE, typename WriterPolicyImpl>

   213 inline void WriterHost<BE, IE, WriterPolicyImpl>::write(jstring string) {

   214   if (string == NULL) {

   215     write<u1>(NULL_STRING);

   216     return;

   217   }

   218   const oop string_oop = JNIHandles::resolve_external_guard(string);

   219   assert(string_oop != NULL, "invariant");

   220   const size_t length = (size_t)java_lang_String::length(string_oop);

   221   if (0 == length) {

   222     write<u1>(EMPTY_STRING);

   223     return;

   224   }

   225   const bool is_latin1_encoded = false;

   226   const typeArrayOop value = java_lang_String::value(string_oop);

   227   assert(value != NULL, "invariant");

   228   if (is_latin1_encoded) {

   229     write<u1>(LATIN1);

   230     write<u4>((u4)length);

   231     be_write(value->byte_at_addr(0), length);

   232   } else {

   233     write<u1>(UTF16);

   234     write<u4>((u4)length);

   235     write(value->char_at_addr(0), length);

   236   }

   237 }

   239 template <typename Writer, typename T>

   240 inline void tag_write(Writer* w, const T* t) {

   241   assert(w != NULL, "invariant");

   242   const traceid id = t == NULL ? 0 : JfrTraceId::use(t);

   243   w->write(id);

   244 }

   246 template <typename BE, typename IE, typename WriterPolicyImpl>

   247 void WriterHost<BE, IE, WriterPolicyImpl>::write(const ClassLoaderData* cld) {

   248   tag_write(this, cld);

   249 }

   251 template <typename BE, typename IE, typename WriterPolicyImpl>

   252 void WriterHost<BE, IE, WriterPolicyImpl>::write(const Klass* klass) {

   253   tag_write(this, klass);

   254 }

   256 template <typename BE, typename IE, typename WriterPolicyImpl>

   257 void WriterHost<BE, IE, WriterPolicyImpl>::write(const Method* method) {

   258   tag_write(this, method);

   259 }

   261 template <typename BE, typename IE, typename WriterPolicyImpl>

   262 void WriterHost<BE, IE, WriterPolicyImpl>::write(const Symbol* symbol) {

   263   ResourceMark rm;

   264   write_utf8(symbol != NULL ? symbol->as_C_string() : NULL);

   265 }

   267 template <typename BE, typename IE, typename WriterPolicyImpl>

   268 void WriterHost<BE, IE, WriterPolicyImpl>::write(const Ticks& time) {

   269   write((u8)JfrTime::is_ft_enabled() ? time.ft_value() : time.value());

   270 }

   272 template <typename BE, typename IE, typename WriterPolicyImpl>

   273 void WriterHost<BE, IE, WriterPolicyImpl>::write(const Tickspan& time) {

   274   write((u8)JfrTime::is_ft_enabled() ? time.ft_value() : time.value());

   275 }

   277 template <typename BE, typename IE, typename WriterPolicyImpl>

   278 void WriterHost<BE, IE, WriterPolicyImpl>::write(const JfrTicks& time) {

   279   write((u8)time.value());

   280 }

   282 template <typename BE, typename IE, typename WriterPolicyImpl>

   283 void WriterHost<BE, IE, WriterPolicyImpl>::write(const JfrTickspan& time) {

   284   write((u8)time.value());

   285 }

   287 template <typename BE, typename IE, typename WriterPolicyImpl>

   288 void WriterHost<BE, IE, WriterPolicyImpl>::bytes(const void* buf, size_t len) {

   289   u1* const pos = this->ensure_size(len);

   290   if (pos != NULL) {

   291     WriterPolicyImpl::bytes(pos, buf, len); // WriterPolicyImpl responsible for position update

   292   }

   293 }

   295 // UTF-8 for use with classfile/bytecodes

   296 template <typename BE, typename IE, typename WriterPolicyImpl>

   297 inline void WriterHost<BE, IE, WriterPolicyImpl>::write_utf8_u2_len(const char* value) {

   298   u2 len = 0;

   299   if (value != NULL) {

   300     len = MIN2<u2>(max_jushort, (u2)strlen(value));

   301   }

   302   write(len);

   303   if (len > 0) {

   304     be_write(value, len);

   305   }

   306 }

   308 template <typename BE, typename IE, typename WriterPolicyImpl>

   309 inline int64_t WriterHost<BE, IE, WriterPolicyImpl>::reserve(size_t size) {

   310   if (ensure_size(size) != NULL) {

   311     const int64_t reserved_offset = this->current_offset();

   312     this->set_current_pos(size);

   313     return reserved_offset;

   314   }

   315   this->cancel();

   316   return 0;

   317 }

   319 template <typename BE, typename IE, typename WriterPolicyImpl>

   320 template <typename T>

   321 inline void WriterHost<BE, IE, WriterPolicyImpl>::write_padded_at_offset(T value, int64_t offset) {

   322   if (this->is_valid()) {

   323     const int64_t current = this->current_offset();

   324     this->seek(offset);

   325     write_padded(value);

   326     this->seek(current); // restore

   327   }

   328 }

   330 template <typename BE, typename IE, typename WriterPolicyImpl>

   331 template <typename T>

   332 inline void WriterHost<BE, IE, WriterPolicyImpl>::write_at_offset(T value, int64_t offset) {

   333   if (this->is_valid()) {

   334     const int64_t current = this->current_offset();

   335     this->seek(offset);

   336     write(value);

   337     this->seek(current); // restore

   338   }

   339 }

   341 template <typename BE, typename IE, typename WriterPolicyImpl>

   342 template <typename T>

   343 inline void WriterHost<BE, IE, WriterPolicyImpl>::write_be_at_offset(T value, int64_t offset) {

   344   if (this->is_valid()) {

   345     const int64_t current = this->current_offset();

   346     this->seek(offset);

   347     be_write(value);

   348     this->seek(current); // restore

   349   }

   350 }

   352 #endif // SHARE_VM_JFR_WRITERS_JFRWRITERHOST_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/jfr/writers/jfrWriterHost.inline.hpp@db357034b763

src/share/vm/jfr/writers/jfrWriterHost.inline.hpp