/*

 * Copyright (c) 2015, 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.

 *

 */

#include "precompiled.hpp"

#include "classfile/stringTable.hpp"

#include "classfile/symbolTable.hpp"

#include "gc/shared/referenceProcessor.hpp"

#include "runtime/arguments.hpp"

#include "runtime/commandLineFlagRangeList.hpp"

#include "runtime/os.hpp"

#include "utilities/defaultStream.hpp"

#include "utilities/macros.hpp"

void CommandLineError::print(bool verbose, const char* msg, ...) {

  if (verbose) {

    va_list listPointer;

    va_start(listPointer, msg);

    jio_vfprintf(defaultStream::error_stream(), msg, listPointer);

    va_end(listPointer);

  }

}

class CommandLineFlagRange_int : public CommandLineFlagRange {

  int _min;

  int _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_int(const char* name, int min, int max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_int(int value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "int %s=%d is outside the allowed range "

                              "[ %d ... %d ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ %-25d ... %25d ]", _min, _max);

  }

};

class CommandLineFlagRange_intx : public CommandLineFlagRange {

  intx _min;

  intx _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_intx(const char* name, intx min, intx max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_intx(intx value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "intx %s=" INTX_FORMAT " is outside the allowed range "

                              "[ " INTX_FORMAT " ... " INTX_FORMAT " ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ " INTX_FORMAT_W(-25) " ... " INTX_FORMAT_W(25) " ]", _min, _max);

  }

};

class CommandLineFlagRange_uint : public CommandLineFlagRange {

  uint _min;

  uint _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_uint(const char* name, uint min, uint max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_uint(uint value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "uint %s=%u is outside the allowed range "

                              "[ %u ... %u ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ %-25u ... %25u ]", _min, _max);

  }

};

class CommandLineFlagRange_uintx : public CommandLineFlagRange {

  uintx _min;

  uintx _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_uintx(const char* name, uintx min, uintx max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_uintx(uintx value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "uintx %s=" UINTX_FORMAT " is outside the allowed range "

                              "[ " UINTX_FORMAT " ... " UINTX_FORMAT " ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ " UINTX_FORMAT_W(-25) " ... " UINTX_FORMAT_W(25) " ]", _min, _max);

  }

};

class CommandLineFlagRange_uint64_t : public CommandLineFlagRange {

  uint64_t _min;

  uint64_t _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_uint64_t(const char* name, uint64_t min, uint64_t max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_uint64_t(uint64_t value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "uint64_t %s=" UINT64_FORMAT " is outside the allowed range "

                              "[ " UINT64_FORMAT " ... " UINT64_FORMAT " ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ " UINT64_FORMAT_W(-25) " ... " UINT64_FORMAT_W(25) " ]", _min, _max);

  }

};

class CommandLineFlagRange_size_t : public CommandLineFlagRange {

  size_t _min;

  size_t _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_size_t(const char* name, size_t min, size_t max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_size_t(size_t value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "size_t %s=" SIZE_FORMAT " is outside the allowed range "

                              "[ " SIZE_FORMAT " ... " SIZE_FORMAT " ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ " SIZE_FORMAT_W(-25) " ... " SIZE_FORMAT_W(25) " ]", _min, _max);

  }

};

class CommandLineFlagRange_double : public CommandLineFlagRange {

  double _min;

  double _max;

public:

  // the "name" argument must be a string literal

  CommandLineFlagRange_double(const char* name, double min, double max) : CommandLineFlagRange(name) {

    _min=min, _max=max;

  }

  Flag::Error check_double(double value, bool verbose = true) {

    if ((value < _min) || (value > _max)) {

      CommandLineError::print(verbose,

                              "double %s=%f is outside the allowed range "

                              "[ %f ... %f ]\n",

                              name(), value, _min, _max);

      return Flag::OUT_OF_BOUNDS;

    } else {

      return Flag::SUCCESS;

    }

  }

  void print(outputStream* st) {

    st->print("[ %-25.3f ... %25.3f ]", _min, _max);

  }

};

// No constraint emitting

void emit_range_no(...)                         { /* NOP */ }

// No constraint emitting if function argument is NOT provided

void emit_range_bool(const char* /*name*/)      { /* NOP */ }

void emit_range_ccstr(const char* /*name*/)     { /* NOP */ }

void emit_range_ccstrlist(const char* /*name*/) { /* NOP */ }

void emit_range_int(const char* /*name*/)       { /* NOP */ }

void emit_range_intx(const char* /*name*/)      { /* NOP */ }

void emit_range_uint(const char* /*name*/)      { /* NOP */ }

void emit_range_uintx(const char* /*name*/)     { /* NOP */ }

void emit_range_uint64_t(const char* /*name*/)  { /* NOP */ }

void emit_range_size_t(const char* /*name*/)    { /* NOP */ }

void emit_range_double(const char* /*name*/)    { /* NOP */ }

// CommandLineFlagRange emitting code functions if range arguments are provided

void emit_range_intx(const char* name, intx min, intx max) {

  CommandLineFlagRangeList::add(new CommandLineFlagRange_intx(name, min, max));

}

void emit_range_uintx(const char* name, uintx min, uintx max) {

  CommandLineFlagRangeList::add(new CommandLineFlagRange_uintx(name, min, max));

}

void emit_range_uint64_t(const char* name, uint64_t min, uint64_t max) {

  CommandLineFlagRangeList::add(new CommandLineFlagRange_uint64_t(name, min, max));

}

void emit_range_size_t(const char* name, size_t min, size_t max) {

  CommandLineFlagRangeList::add(new CommandLineFlagRange_size_t(name, min, max));

}

void emit_range_double(const char* name, double min, double max) {

  CommandLineFlagRangeList::add(new CommandLineFlagRange_double(name, min, max));

}

// Generate code to call emit_range_xxx function

#define EMIT_RANGE_PRODUCT_FLAG(type, name, value, doc)      ); emit_range_##type(#name

#define EMIT_RANGE_COMMERCIAL_FLAG(type, name, value, doc)   ); emit_range_##type(#name

#define EMIT_RANGE_DIAGNOSTIC_FLAG(type, name, value, doc)   ); emit_range_##type(#name

#define EMIT_RANGE_EXPERIMENTAL_FLAG(type, name, value, doc) ); emit_range_##type(#name

#define EMIT_RANGE_MANAGEABLE_FLAG(type, name, value, doc)   ); emit_range_##type(#name

#define EMIT_RANGE_PRODUCT_RW_FLAG(type, name, value, doc)   ); emit_range_##type(#name

#define EMIT_RANGE_PD_PRODUCT_FLAG(type, name, doc)          ); emit_range_##type(#name

#define EMIT_RANGE_DEVELOPER_FLAG(type, name, value, doc)    ); emit_range_##type(#name

#define EMIT_RANGE_PD_DEVELOPER_FLAG(type, name, doc)        ); emit_range_##type(#name

#define EMIT_RANGE_NOTPRODUCT_FLAG(type, name, value, doc)   ); emit_range_##type(#name

#define EMIT_RANGE_LP64_PRODUCT_FLAG(type, name, value, doc) ); emit_range_##type(#name

// Generate func argument to pass into emit_range_xxx functions

#define EMIT_RANGE_CHECK(a, b)                               , a, b

#define INITIAL_RANGES_SIZE 165

GrowableArray<CommandLineFlagRange*>* CommandLineFlagRangeList::_ranges = NULL;

// Check the ranges of all flags that have them

void CommandLineFlagRangeList::init(void) {

  _ranges = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<CommandLineFlagRange*>(INITIAL_RANGES_SIZE, true);

  emit_range_no(NULL RUNTIME_FLAGS(EMIT_RANGE_DEVELOPER_FLAG,

                                   EMIT_RANGE_PD_DEVELOPER_FLAG,

                                   EMIT_RANGE_PRODUCT_FLAG,

                                   EMIT_RANGE_PD_PRODUCT_FLAG,

                                   EMIT_RANGE_DIAGNOSTIC_FLAG,

                                   EMIT_RANGE_EXPERIMENTAL_FLAG,

                                   EMIT_RANGE_NOTPRODUCT_FLAG,

                                   EMIT_RANGE_MANAGEABLE_FLAG,

                                   EMIT_RANGE_PRODUCT_RW_FLAG,

                                   EMIT_RANGE_LP64_PRODUCT_FLAG,

                                   EMIT_RANGE_CHECK,

                                   IGNORE_CONSTRAINT) );

  EMIT_RANGES_FOR_GLOBALS_EXT

  emit_range_no(NULL ARCH_FLAGS(EMIT_RANGE_DEVELOPER_FLAG,

                                EMIT_RANGE_PRODUCT_FLAG,

                                EMIT_RANGE_DIAGNOSTIC_FLAG,

                                EMIT_RANGE_EXPERIMENTAL_FLAG,

                                EMIT_RANGE_NOTPRODUCT_FLAG,

                                EMIT_RANGE_CHECK,

                                IGNORE_CONSTRAINT));

#if INCLUDE_JVMCI

  emit_range_no(NULL JVMCI_FLAGS(EMIT_RANGE_DEVELOPER_FLAG,

                                 EMIT_RANGE_PD_DEVELOPER_FLAG,

                                 EMIT_RANGE_PRODUCT_FLAG,

                                 EMIT_RANGE_PD_PRODUCT_FLAG,

                                 EMIT_RANGE_DIAGNOSTIC_FLAG,

                                 EMIT_RANGE_EXPERIMENTAL_FLAG,

                                 EMIT_RANGE_NOTPRODUCT_FLAG,

                                 EMIT_RANGE_CHECK,

                                 IGNORE_CONSTRAINT));

#endif // INCLUDE_JVMCI

#ifdef COMPILER1

  emit_range_no(NULL C1_FLAGS(EMIT_RANGE_DEVELOPER_FLAG,

                              EMIT_RANGE_PD_DEVELOPER_FLAG,

                              EMIT_RANGE_PRODUCT_FLAG,

                              EMIT_RANGE_PD_PRODUCT_FLAG,

                              EMIT_RANGE_DIAGNOSTIC_FLAG,

                              EMIT_RANGE_NOTPRODUCT_FLAG,

                              EMIT_RANGE_CHECK,

                              IGNORE_CONSTRAINT));

#endif // COMPILER1

#ifdef COMPILER2

  emit_range_no(NULL C2_FLAGS(EMIT_RANGE_DEVELOPER_FLAG,

                              EMIT_RANGE_PD_DEVELOPER_FLAG,

                              EMIT_RANGE_PRODUCT_FLAG,

                              EMIT_RANGE_PD_PRODUCT_FLAG,

                              EMIT_RANGE_DIAGNOSTIC_FLAG,

                              EMIT_RANGE_EXPERIMENTAL_FLAG,

                              EMIT_RANGE_NOTPRODUCT_FLAG,

                              EMIT_RANGE_CHECK,

                              IGNORE_CONSTRAINT));

#endif // COMPILER2

#if INCLUDE_ALL_GCS

  emit_range_no(NULL G1_FLAGS(EMIT_RANGE_DEVELOPER_FLAG,

                              EMIT_RANGE_PD_DEVELOPER_FLAG,

                              EMIT_RANGE_PRODUCT_FLAG,

                              EMIT_RANGE_PD_PRODUCT_FLAG,

                              EMIT_RANGE_DIAGNOSTIC_FLAG,

                              EMIT_RANGE_EXPERIMENTAL_FLAG,

                              EMIT_RANGE_NOTPRODUCT_FLAG,

                              EMIT_RANGE_MANAGEABLE_FLAG,

                              EMIT_RANGE_PRODUCT_RW_FLAG,

                              EMIT_RANGE_CHECK,

                              IGNORE_CONSTRAINT));

#endif // INCLUDE_ALL_GCS

}

CommandLineFlagRange* CommandLineFlagRangeList::find(const char* name) {

  CommandLineFlagRange* found = NULL;

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

    CommandLineFlagRange* range = at(i);

    if (strcmp(range->name(), name) == 0) {

      found = range;

      break;

    }

  }

  return found;

}

void CommandLineFlagRangeList::print(const char* name, outputStream* st, bool unspecified) {

  CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);

  if (range != NULL) {

    range->print(st);

  } else if (unspecified == true) {

    st->print("[                           ...                           ]");

  }

}

bool CommandLineFlagRangeList::check_ranges() {

  // Check ranges.

  bool status = true;

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

    CommandLineFlagRange* range = at(i);

    const char* name = range->name();

    Flag* flag = Flag::find_flag(name, strlen(name), true, true);

    // We must check for NULL here as lp64_product flags on 32 bit architecture

    // can generate range check (despite that they are declared as constants),

    // but they will not be returned by Flag::find_flag()

    if (flag != NULL) {

      if (flag->is_int()) {

        int value = flag->get_int();

        if (range->check_int(value, true) != Flag::SUCCESS) status = false;

      } else if (flag->is_uint()) {

        uint value = flag->get_uint();

        if (range->check_uint(value, true) != Flag::SUCCESS) status = false;

      } else if (flag->is_intx()) {

        intx value = flag->get_intx();

        if (range->check_intx(value, true) != Flag::SUCCESS) status = false;

      } else if (flag->is_uintx()) {

        uintx value = flag->get_uintx();

        if (range->check_uintx(value, true) != Flag::SUCCESS) status = false;

      } else if (flag->is_uint64_t()) {

        uint64_t value = flag->get_uint64_t();

        if (range->check_uint64_t(value, true) != Flag::SUCCESS) status = false;

      } else if (flag->is_size_t()) {

        size_t value = flag->get_size_t();

        if (range->check_size_t(value, true) != Flag::SUCCESS) status = false;

      } else if (flag->is_double()) {

        double value = flag->get_double();

        if (range->check_double(value, true) != Flag::SUCCESS) status = false;

      }

    }

  }

  return status;

}