48 inline void* os::dll_lookup(void *lib, const char *name) {
  49   return (void*)::GetProcAddress((HMODULE)lib, name);
  50 }
  51 
  52 // Used to improve time-sharing on some systems
  53 inline void os::loop_breaker(int attempts) {}
  54 
  55 inline bool os::obsolete_option(const JavaVMOption *option) {
  56   return false;
  57 }
  58 
  59 inline bool os::uses_stack_guard_pages() {
  60   return os::win32::is_nt();
  61 }
  62 
  63 inline bool os::allocate_stack_guard_pages() {
  64   assert(uses_stack_guard_pages(), "sanity check");
  65   return true;
  66 }
  67 
  68 inline int os::readdir_buf_size(const char *path)
  69 {
  70   /* As Windows doesn't use the directory entry buffer passed to
  71      os::readdir() this can be as short as possible */
  72 
  73   return 1;
  74 }
  75 
  76 // Bang the shadow pages if they need to be touched to be mapped.
  77 inline void os::bang_stack_shadow_pages() {
  78   // Write to each page of our new frame to force OS mapping.
  79   // If we decrement stack pointer more than one page
  80   // the OS may not map an intervening page into our space
  81   // and may fault on a memory access to interior of our frame.
  82   address sp = current_stack_pointer();
  83   for (int pages = 1; pages <= StackShadowPages; pages++) {
  84     *((int *)(sp - (pages * vm_page_size()))) = 0;
  85   }
  86 }
  87 
  88 inline bool os::numa_has_static_binding()   { return true;   }
  89 inline bool os::numa_has_group_homing()     { return false;  }
  90 
  91 inline size_t os::read(int fd, void *buf, unsigned int nBytes) {
  92   return ::read(fd, buf, nBytes);
  93 }
  94 
  95 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {

  48 inline void* os::dll_lookup(void *lib, const char *name) {
  49   return (void*)::GetProcAddress((HMODULE)lib, name);
  50 }
  51 
  52 // Used to improve time-sharing on some systems
  53 inline void os::loop_breaker(int attempts) {}
  54 
  55 inline bool os::obsolete_option(const JavaVMOption *option) {
  56   return false;
  57 }
  58 
  59 inline bool os::uses_stack_guard_pages() {
  60   return os::win32::is_nt();
  61 }
  62 
  63 inline bool os::allocate_stack_guard_pages() {
  64   assert(uses_stack_guard_pages(), "sanity check");
  65   return true;
  66 }
  67 








  68 // Bang the shadow pages if they need to be touched to be mapped.
  69 inline void os::bang_stack_shadow_pages() {
  70   // Write to each page of our new frame to force OS mapping.
  71   // If we decrement stack pointer more than one page
  72   // the OS may not map an intervening page into our space
  73   // and may fault on a memory access to interior of our frame.
  74   address sp = current_stack_pointer();
  75   for (int pages = 1; pages <= StackShadowPages; pages++) {
  76     *((int *)(sp - (pages * vm_page_size()))) = 0;
  77   }
  78 }
  79 
  80 inline bool os::numa_has_static_binding()   { return true;   }
  81 inline bool os::numa_has_group_homing()     { return false;  }
  82 
  83 inline size_t os::read(int fd, void *buf, unsigned int nBytes) {
  84   return ::read(fd, buf, nBytes);
  85 }
  86 
  87 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {