view src/os/linux/vm/globals_linux.hpp @ 8787:5aa3d728164a

8146115: Improve docker container detection and resource configuration usage Reviewed-by: bobv, dbuck
author poonam
date Fri, 06 Jul 2018 18:50:13 +0000
parents 9187473df31d
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 * published by the Free Software Foundation.
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 * 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).
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// Defines Linux specific flags. They are not available on other platforms.
#define RUNTIME_OS_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct) \
  product(bool, UseOprofile, false,                                     \
        "enable support for Oprofile profiler")                         \
  product(bool, UseLinuxPosixThreadCPUClocks, true,                     \
          "enable fast Linux Posix clocks where available")             \
/*  NB: The default value of UseLinuxPosixThreadCPUClocks may be        \
    overridden in Arguments::parse_each_vm_init_arg.  */                \
  product(bool, UseHugeTLBFS, false,                                    \
          "Use MAP_HUGETLB for large pages")                            \
  product(bool, UseTransparentHugePages, false,                         \
          "Use MADV_HUGEPAGE for large pages")                          \
  product(bool, LoadExecStackDllInVMThread, true,                       \
          "Load DLLs with executable-stack attribute in the VM Thread") \
  product(bool, UseSHM, false,                                          \
          "Use SYSV shared memory for large pages")                     \
  product(bool, UseContainerSupport, true,                              \
          "Enable detection and runtime container configuration support") \
  product(bool, PreferContainerQuotaForCPUCount, true,                  \
          "Calculate the container CPU availability based on the value" \
          " of quotas (if set), when true. Otherwise, use the CPU"      \
          " shares value, provided it is less than quota.")

// Defines Linux-specific default values. The flags are available on all
// platforms, but they may have different default values on other platforms.
define_pd_global(bool, UseLargePages, false);
define_pd_global(bool, UseLargePagesIndividualAllocation, false);
define_pd_global(bool, UseOSErrorReporting, false);
define_pd_global(bool, UseThreadPriorities, true) ;