src/hotspot/share/gc/cms/cmsArguments.cpp

rev 52689 : 8213224: Move code related to GC threads calculation out of AdaptiveSizePolicy
Summary: Consolidate code related to GC threads calculation into a single class

*** 28,41 ****
  #include "gc/cms/cmsCollectorPolicy.hpp"
  #include "gc/cms/cmsHeap.hpp"
  #include "gc/cms/compactibleFreeListSpace.hpp"
  #include "gc/shared/gcArguments.inline.hpp"
  #include "gc/shared/genCollectedHeap.hpp"
  #include "runtime/arguments.hpp"
  #include "runtime/globals.hpp"
  #include "runtime/globals_extension.hpp"
- #include "runtime/vm_version.hpp"
  #include "utilities/defaultStream.hpp"
  
  size_t CMSArguments::conservative_max_heap_alignment() {
    return GenCollectedHeap::conservative_max_heap_alignment();
  }
--- 28,41 ----
  #include "gc/cms/cmsCollectorPolicy.hpp"
  #include "gc/cms/cmsHeap.hpp"
  #include "gc/cms/compactibleFreeListSpace.hpp"
  #include "gc/shared/gcArguments.inline.hpp"
  #include "gc/shared/genCollectedHeap.hpp"
+ #include "gc/shared/workerPolicy.hpp"
  #include "runtime/arguments.hpp"
  #include "runtime/globals.hpp"
  #include "runtime/globals_extension.hpp"
  #include "utilities/defaultStream.hpp"
  
  size_t CMSArguments::conservative_max_heap_alignment() {
    return GenCollectedHeap::conservative_max_heap_alignment();
  }
*** 44,54 ****
    assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC,
           "control point invariant");
    assert(UseConcMarkSweepGC, "CMS is expected to be on here");
  
    if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
!     FLAG_SET_DEFAULT(ParallelGCThreads, VM_Version::parallel_worker_threads());
      assert(ParallelGCThreads > 0, "We should always have at least one thread by default");
    } else if (ParallelGCThreads == 0) {
      jio_fprintf(defaultStream::error_stream(),
          "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n");
      vm_exit(1);
--- 44,54 ----
    assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC,
           "control point invariant");
    assert(UseConcMarkSweepGC, "CMS is expected to be on here");
  
    if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
!     FLAG_SET_DEFAULT(ParallelGCThreads, WorkerPolicy::parallel_worker_threads());
      assert(ParallelGCThreads > 0, "We should always have at least one thread by default");
    } else if (ParallelGCThreads == 0) {
      jio_fprintf(defaultStream::error_stream(),
          "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n");
      vm_exit(1);