1 /*

     2  * Copyright (c) 2015, 2016, 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 #include "precompiled.hpp"

    26 #include "gc/shared/plab.hpp"

    27 #include "runtime/flags/jvmFlagWriteableList.hpp"

    28 #include "runtime/os.hpp"

    29 #ifdef COMPILER1

    30 #include "c1/c1_globals.hpp"

    31 #endif // COMPILER1

    32 #ifdef COMPILER2

    33 #include "opto/c2_globals.hpp"

    34 #endif // COMPILER2

    35 #if INCLUDE_JVMCI

    36 #include "jvmci/jvmci_globals.hpp"

    37 #endif

    38 

    39 bool JVMFlagWriteable::is_writeable(void) {

    40   return _writeable;

    41 }

    42 

    43 void JVMFlagWriteable::mark_once(void) {

    44   if (_type == Once) {

    45     _writeable = false;

    46   }

    47 }

    48 

    49 void JVMFlagWriteable::mark_startup(void) {

    50   if (_type == JVMFlagWriteable::CommandLineOnly) {

    51     _writeable = false;

    52   }

    53 }

    54 

    55 // No control emitting

    56 void emit_writeable_no(...)                         { /* NOP */ }

    57 

    58 // No control emitting if type argument is NOT provided

    59 void emit_writeable_bool(const char* /*name*/)      { /* NOP */ }

    60 void emit_writeable_ccstr(const char* /*name*/)     { /* NOP */ }

    61 void emit_writeable_ccstrlist(const char* /*name*/) { /* NOP */ }

    62 void emit_writeable_int(const char* /*name*/)       { /* NOP */ }

    63 void emit_writeable_intx(const char* /*name*/)      { /* NOP */ }

    64 void emit_writeable_uint(const char* /*name*/)      { /* NOP */ }

    65 void emit_writeable_uintx(const char* /*name*/)     { /* NOP */ }

    66 void emit_writeable_uint64_t(const char* /*name*/)  { /* NOP */ }

    67 void emit_writeable_size_t(const char* /*name*/)    { /* NOP */ }

    68 void emit_writeable_double(const char* /*name*/)    { /* NOP */ }

    69 

    70 // JVMFlagWriteable emitting code functions if range arguments are provided

    71 void emit_writeable_bool(const char* name, JVMFlagWriteable::WriteableType type) {

    72   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    73 }

    74 void emit_writeable_int(const char* name, JVMFlagWriteable::WriteableType type) {

    75   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    76 }

    77 void emit_writeable_intx(const char* name, JVMFlagWriteable::WriteableType type) {

    78   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    79 }

    80 void emit_writeable_uint(const char* name, JVMFlagWriteable::WriteableType type) {

    81   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    82 }

    83 void emit_writeable_uintx(const char* name, JVMFlagWriteable::WriteableType type) {

    84   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    85 }

    86 void emit_writeable_uint64_t(const char* name, JVMFlagWriteable::WriteableType type) {

    87   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    88 }

    89 void emit_writeable_size_t(const char* name, JVMFlagWriteable::WriteableType type) {

    90   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    91 }

    92 void emit_writeable_double(const char* name, JVMFlagWriteable::WriteableType type) {

    93   JVMFlagWriteableList::add(new JVMFlagWriteable(name, type));

    94 }

    95 

    96 // Generate code to call emit_writeable_xxx function

    97 #define EMIT_WRITEABLE_PRODUCT_FLAG(type, name, value, doc)      ); emit_writeable_##type(#name

    98 #define EMIT_WRITEABLE_COMMERCIAL_FLAG(type, name, value, doc)   ); emit_writeable_##type(#name

    99 #define EMIT_WRITEABLE_DIAGNOSTIC_FLAG(type, name, value, doc)   ); emit_writeable_##type(#name

   100 #define EMIT_WRITEABLE_EXPERIMENTAL_FLAG(type, name, value, doc) ); emit_writeable_##type(#name

   101 #define EMIT_WRITEABLE_MANAGEABLE_FLAG(type, name, value, doc)   ); emit_writeable_##type(#name

   102 #define EMIT_WRITEABLE_PRODUCT_RW_FLAG(type, name, value, doc)   ); emit_writeable_##type(#name

   103 #define EMIT_WRITEABLE_PD_PRODUCT_FLAG(type, name, doc)          ); emit_writeable_##type(#name

   104 #define EMIT_WRITEABLE_DEVELOPER_FLAG(type, name, value, doc)    ); emit_writeable_##type(#name

   105 #define EMIT_WRITEABLE_PD_DEVELOPER_FLAG(type, name, doc)        ); emit_writeable_##type(#name

   106 #define EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG(type, name, doc)       ); emit_writeable_##type(#name

   107 #define EMIT_WRITEABLE_NOTPRODUCT_FLAG(type, name, value, doc)   ); emit_writeable_##type(#name

   108 #define EMIT_WRITEABLE_LP64_PRODUCT_FLAG(type, name, value, doc) ); emit_writeable_##type(#name

   109 

   110 // Generate type argument to pass into emit_writeable_xxx functions

   111 #define EMIT_WRITEABLE(a)                                      , JVMFlagWriteable::a

   112 

   113 #define INITIAL_WRITEABLES_SIZE 2

   114 GrowableArray<JVMFlagWriteable*>* JVMFlagWriteableList::_controls = NULL;

   115 

   116 void JVMFlagWriteableList::init(void) {

   117 

   118   _controls = new (ResourceObj::C_HEAP, mtArguments) GrowableArray<JVMFlagWriteable*>(INITIAL_WRITEABLES_SIZE, true);

   119 

   120   emit_writeable_no(NULL VM_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,

   121                                   EMIT_WRITEABLE_PD_DEVELOPER_FLAG,

   122                                   EMIT_WRITEABLE_PRODUCT_FLAG,

   123                                   EMIT_WRITEABLE_PD_PRODUCT_FLAG,

   124                                   EMIT_WRITEABLE_DIAGNOSTIC_FLAG,

   125                                   EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,

   126                                   EMIT_WRITEABLE_EXPERIMENTAL_FLAG,

   127                                   EMIT_WRITEABLE_NOTPRODUCT_FLAG,

   128                                   EMIT_WRITEABLE_MANAGEABLE_FLAG,

   129                                   EMIT_WRITEABLE_PRODUCT_RW_FLAG,

   130                                   EMIT_WRITEABLE_LP64_PRODUCT_FLAG,

   131                                   IGNORE_RANGE,

   132                                   IGNORE_CONSTRAINT,

   133                                   EMIT_WRITEABLE));

   134 

   135   EMIT_WRITEABLES_FOR_GLOBALS_EXT

   136 

   137   emit_writeable_no(NULL ARCH_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,

   138                                 EMIT_WRITEABLE_PRODUCT_FLAG,

   139                                 EMIT_WRITEABLE_DIAGNOSTIC_FLAG,

   140                                 EMIT_WRITEABLE_EXPERIMENTAL_FLAG,

   141                                 EMIT_WRITEABLE_NOTPRODUCT_FLAG,

   142                                 IGNORE_RANGE,

   143                                 IGNORE_CONSTRAINT,

   144                                 EMIT_WRITEABLE));

   145 

   146 #if INCLUDE_JVMCI

   147   emit_writeable_no(NULL JVMCI_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,

   148                                  EMIT_WRITEABLE_PD_DEVELOPER_FLAG,

   149                                  EMIT_WRITEABLE_PRODUCT_FLAG,

   150                                  EMIT_WRITEABLE_PD_PRODUCT_FLAG,

   151                                  EMIT_WRITEABLE_DIAGNOSTIC_FLAG,

   152                                  EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,

   153                                  EMIT_WRITEABLE_EXPERIMENTAL_FLAG,

   154                                  EMIT_WRITEABLE_NOTPRODUCT_FLAG,

   155                                  IGNORE_RANGE,

   156                                  IGNORE_CONSTRAINT,

   157                                  EMIT_WRITEABLE));

   158 #endif // INCLUDE_JVMCI

   159 

   160 #ifdef COMPILER1

   161   emit_writeable_no(NULL C1_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,

   162                               EMIT_WRITEABLE_PD_DEVELOPER_FLAG,

   163                               EMIT_WRITEABLE_PRODUCT_FLAG,

   164                               EMIT_WRITEABLE_PD_PRODUCT_FLAG,

   165                               EMIT_WRITEABLE_DIAGNOSTIC_FLAG,

   166                               EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,

   167                               EMIT_WRITEABLE_NOTPRODUCT_FLAG,

   168                               IGNORE_RANGE,

   169                               IGNORE_CONSTRAINT,

   170                               EMIT_WRITEABLE));

   171 #endif // COMPILER1

   172 

   173 #ifdef COMPILER2

   174   emit_writeable_no(NULL C2_FLAGS(EMIT_WRITEABLE_DEVELOPER_FLAG,

   175                               EMIT_WRITEABLE_PD_DEVELOPER_FLAG,

   176                               EMIT_WRITEABLE_PRODUCT_FLAG,

   177                               EMIT_WRITEABLE_PD_PRODUCT_FLAG,

   178                               EMIT_WRITEABLE_DIAGNOSTIC_FLAG,

   179                               EMIT_WRITEABLE_PD_DIAGNOSTIC_FLAG,

   180                               EMIT_WRITEABLE_EXPERIMENTAL_FLAG,

   181                               EMIT_WRITEABLE_NOTPRODUCT_FLAG,

   182                               IGNORE_RANGE,

   183                               IGNORE_CONSTRAINT,

   184                               EMIT_WRITEABLE));

   185 #endif // COMPILER2

   186 }

   187 

   188 JVMFlagWriteable* JVMFlagWriteableList::find(const char* name) {

   189   JVMFlagWriteable* found = NULL;

   190   for (int i=0; i<length(); i++) {

   191     JVMFlagWriteable* writeable = at(i);

   192     if (strcmp(writeable->name(), name) == 0) {

   193       found = writeable;

   194       break;

   195     }

   196   }

   197   return found;

   198 }

   199 

   200 void JVMFlagWriteableList::mark_startup(void) {

   201   for (int i=0; i<length(); i++) {

   202     JVMFlagWriteable* writeable = at(i);

   203     writeable->mark_startup();

   204   }

   205 }