src/hotspot/share/runtime/flags/jvmFlagConstraintsRuntime.cpp

*** 1,7 ****
  /*
!  * Copyright (c) 2015, 2017, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2015, 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.
*** 22,143 ****
   *
   */
  
  #include "precompiled.hpp"
  #include "runtime/arguments.hpp"
! #include "runtime/commandLineFlagConstraintsRuntime.hpp"
! #include "runtime/commandLineFlagRangeList.hpp"
! #include "runtime/globals.hpp"
  #include "runtime/safepointMechanism.hpp"
  #include "runtime/task.hpp"
  #include "utilities/defaultStream.hpp"
  
! Flag::Error ObjectAlignmentInBytesConstraintFunc(intx value, bool verbose) {
    if (!is_power_of_2(value)) {
      CommandLineError::print(verbose,
                              "ObjectAlignmentInBytes (" INTX_FORMAT ") must be "
                              "power of 2\n",
                              value);
!     return Flag::VIOLATES_CONSTRAINT;
    }
    // In case page size is very small.
    if (value >= (intx)os::vm_page_size()) {
      CommandLineError::print(verbose,
                              "ObjectAlignmentInBytes (" INTX_FORMAT ") must be "
                              "less than page size (" INTX_FORMAT ")\n",
                              value, (intx)os::vm_page_size());
!     return Flag::VIOLATES_CONSTRAINT;
    }
!   return Flag::SUCCESS;
  }
  
  // Need to enforce the padding not to break the existing field alignments.
  // It is sufficient to check against the largest type size.
! Flag::Error ContendedPaddingWidthConstraintFunc(intx value, bool verbose) {
    if ((value % BytesPerLong) != 0) {
      CommandLineError::print(verbose,
                              "ContendedPaddingWidth (" INTX_FORMAT ") must be "
                              "a multiple of %d\n",
                              value, BytesPerLong);
!     return Flag::VIOLATES_CONSTRAINT;
    } else {
!     return Flag::SUCCESS;
    }
  }
  
! Flag::Error BiasedLockingBulkRebiasThresholdFunc(intx value, bool verbose) {
    if (value > BiasedLockingBulkRevokeThreshold) {
      CommandLineError::print(verbose,
                              "BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ") must be "
                              "less than or equal to BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ")\n",
                              value, BiasedLockingBulkRevokeThreshold);
!     return Flag::VIOLATES_CONSTRAINT;
    } else {
!     return Flag::SUCCESS;
    }
  }
  
! Flag::Error BiasedLockingStartupDelayFunc(intx value, bool verbose) {
    if ((value % PeriodicTask::interval_gran) != 0) {
      CommandLineError::print(verbose,
                              "BiasedLockingStartupDelay (" INTX_FORMAT ") must be "
                              "evenly divisible by PeriodicTask::interval_gran (" INTX_FORMAT ")\n",
                              value, PeriodicTask::interval_gran);
!     return Flag::VIOLATES_CONSTRAINT;
    } else {
!     return Flag::SUCCESS;
    }
  }
  
! Flag::Error BiasedLockingBulkRevokeThresholdFunc(intx value, bool verbose) {
    if (value < BiasedLockingBulkRebiasThreshold) {
      CommandLineError::print(verbose,
                              "BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ") must be "
                              "greater than or equal to BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ")\n",
                              value, BiasedLockingBulkRebiasThreshold);
!     return Flag::VIOLATES_CONSTRAINT;
    } else if ((double)value/(double)BiasedLockingDecayTime > 0.1) {
      CommandLineError::print(verbose,
                              "The ratio of BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ")"
                              " to BiasedLockingDecayTime (" INTX_FORMAT ") must be "
                              "less than or equal to 0.1\n",
                              value, BiasedLockingBulkRebiasThreshold);
!     return Flag::VIOLATES_CONSTRAINT;
    } else {
!     return Flag::SUCCESS;
    }
  }
  
! Flag::Error BiasedLockingDecayTimeFunc(intx value, bool verbose) {
    if (BiasedLockingBulkRebiasThreshold/(double)value > 0.1) {
      CommandLineError::print(verbose,
                              "The ratio of BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ")"
                              " to BiasedLockingDecayTime (" INTX_FORMAT ") must be "
                              "less than or equal to 0.1\n",
                              BiasedLockingBulkRebiasThreshold, value);
!     return Flag::VIOLATES_CONSTRAINT;
    } else {
!     return Flag::SUCCESS;
    }
  }
  
! Flag::Error PerfDataSamplingIntervalFunc(intx value, bool verbose) {
    if ((value % PeriodicTask::interval_gran != 0)) {
      CommandLineError::print(verbose,
                              "PerfDataSamplingInterval (" INTX_FORMAT ") must be "
                              "evenly divisible by PeriodicTask::interval_gran (" INTX_FORMAT ")\n",
                              value, PeriodicTask::interval_gran);
!     return Flag::VIOLATES_CONSTRAINT;
    } else {
!     return Flag::SUCCESS;
    }
  }
  
! Flag::Error ThreadLocalHandshakesConstraintFunc(bool value, bool verbose) {
    if (value) {
      if (!SafepointMechanism::supports_thread_local_poll()) {
        CommandLineError::print(verbose, "ThreadLocalHandshakes not yet supported on this platform\n");
!       return Flag::VIOLATES_CONSTRAINT;
      }
    }
!   return Flag::SUCCESS;
  }
--- 22,142 ----
   *
   */
  
  #include "precompiled.hpp"
  #include "runtime/arguments.hpp"
! #include "runtime/flags/jvmFlagConstraintsRuntime.hpp"
! #include "runtime/flags/jvmFlagRangeList.hpp"
  #include "runtime/safepointMechanism.hpp"
  #include "runtime/task.hpp"
  #include "utilities/defaultStream.hpp"
  
! JVMFlag::Error ObjectAlignmentInBytesConstraintFunc(intx value, bool verbose) {
    if (!is_power_of_2(value)) {
      CommandLineError::print(verbose,
                              "ObjectAlignmentInBytes (" INTX_FORMAT ") must be "
                              "power of 2\n",
                              value);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    }
    // In case page size is very small.
    if (value >= (intx)os::vm_page_size()) {
      CommandLineError::print(verbose,
                              "ObjectAlignmentInBytes (" INTX_FORMAT ") must be "
                              "less than page size (" INTX_FORMAT ")\n",
                              value, (intx)os::vm_page_size());
!     return JVMFlag::VIOLATES_CONSTRAINT;
    }
!   return JVMFlag::SUCCESS;
  }
  
  // Need to enforce the padding not to break the existing field alignments.
  // It is sufficient to check against the largest type size.
! JVMFlag::Error ContendedPaddingWidthConstraintFunc(intx value, bool verbose) {
    if ((value % BytesPerLong) != 0) {
      CommandLineError::print(verbose,
                              "ContendedPaddingWidth (" INTX_FORMAT ") must be "
                              "a multiple of %d\n",
                              value, BytesPerLong);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else {
!     return JVMFlag::SUCCESS;
    }
  }
  
! JVMFlag::Error BiasedLockingBulkRebiasThresholdFunc(intx value, bool verbose) {
    if (value > BiasedLockingBulkRevokeThreshold) {
      CommandLineError::print(verbose,
                              "BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ") must be "
                              "less than or equal to BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ")\n",
                              value, BiasedLockingBulkRevokeThreshold);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else {
!     return JVMFlag::SUCCESS;
    }
  }
  
! JVMFlag::Error BiasedLockingStartupDelayFunc(intx value, bool verbose) {
    if ((value % PeriodicTask::interval_gran) != 0) {
      CommandLineError::print(verbose,
                              "BiasedLockingStartupDelay (" INTX_FORMAT ") must be "
                              "evenly divisible by PeriodicTask::interval_gran (" INTX_FORMAT ")\n",
                              value, PeriodicTask::interval_gran);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else {
!     return JVMFlag::SUCCESS;
    }
  }
  
! JVMFlag::Error BiasedLockingBulkRevokeThresholdFunc(intx value, bool verbose) {
    if (value < BiasedLockingBulkRebiasThreshold) {
      CommandLineError::print(verbose,
                              "BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ") must be "
                              "greater than or equal to BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ")\n",
                              value, BiasedLockingBulkRebiasThreshold);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else if ((double)value/(double)BiasedLockingDecayTime > 0.1) {
      CommandLineError::print(verbose,
                              "The ratio of BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ")"
                              " to BiasedLockingDecayTime (" INTX_FORMAT ") must be "
                              "less than or equal to 0.1\n",
                              value, BiasedLockingBulkRebiasThreshold);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else {
!     return JVMFlag::SUCCESS;
    }
  }
  
! JVMFlag::Error BiasedLockingDecayTimeFunc(intx value, bool verbose) {
    if (BiasedLockingBulkRebiasThreshold/(double)value > 0.1) {
      CommandLineError::print(verbose,
                              "The ratio of BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ")"
                              " to BiasedLockingDecayTime (" INTX_FORMAT ") must be "
                              "less than or equal to 0.1\n",
                              BiasedLockingBulkRebiasThreshold, value);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else {
!     return JVMFlag::SUCCESS;
    }
  }
  
! JVMFlag::Error PerfDataSamplingIntervalFunc(intx value, bool verbose) {
    if ((value % PeriodicTask::interval_gran != 0)) {
      CommandLineError::print(verbose,
                              "PerfDataSamplingInterval (" INTX_FORMAT ") must be "
                              "evenly divisible by PeriodicTask::interval_gran (" INTX_FORMAT ")\n",
                              value, PeriodicTask::interval_gran);
!     return JVMFlag::VIOLATES_CONSTRAINT;
    } else {
!     return JVMFlag::SUCCESS;
    }
  }
  
! JVMFlag::Error ThreadLocalHandshakesConstraintFunc(bool value, bool verbose) {
    if (value) {
      if (!SafepointMechanism::supports_thread_local_poll()) {
        CommandLineError::print(verbose, "ThreadLocalHandshakes not yet supported on this platform\n");
!       return JVMFlag::VIOLATES_CONSTRAINT;
      }
    }
!   return JVMFlag::SUCCESS;
  }