src/share/vm/prims/whitebox.cpp

rev 7602 : 8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.

*** 174,188 ****
  #endif
  WB_END
  
  WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
    size_t granularity = os::vm_allocation_granularity();
!   ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
    VirtualSpace vs;
    vs.initialize(rhs, 50 * granularity);
  
!   //Check if constraints are complied
    if (!( UseCompressedOops && rhs.base() != NULL &&
           Universe::narrow_oop_base() != NULL &&
           Universe::narrow_oop_use_implicit_null_checks() )) {
      tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
                    "\tUseCompressedOops is %d\n"
--- 174,188 ----
  #endif
  WB_END
  
  WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
    size_t granularity = os::vm_allocation_granularity();
!   ReservedHeapSpace rhs(100 * granularity, granularity, false);
    VirtualSpace vs;
    vs.initialize(rhs, 50 * granularity);
  
!   // Check if constraints are complied
    if (!( UseCompressedOops && rhs.base() != NULL &&
           Universe::narrow_oop_base() != NULL &&
           Universe::narrow_oop_use_implicit_null_checks() )) {
      tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
                    "\tUseCompressedOops is %d\n"
*** 201,211 ****
  WB_END
  
  static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
                                             size_t magnitude, size_t iterations) {
    size_t granularity = os::vm_allocation_granularity();
!   ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
    VirtualSpace vs;
    if (!vs.initialize(rhs, 0)) {
      tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
      return 3;
    }
--- 201,211 ----
  WB_END
  
  static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
                                             size_t magnitude, size_t iterations) {
    size_t granularity = os::vm_allocation_granularity();
!   ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
    VirtualSpace vs;
    if (!vs.initialize(rhs, 0)) {
      tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
      return 3;
    }