396 }
 397 
 398 // Align objects by rounding up their size, in HeapWord units.
 399 
 400 #define align_object_size_(size) align_size_up_(size, MinObjAlignment)
 401 
 402 inline intptr_t align_object_size(intptr_t size) {
 403   return align_size_up(size, MinObjAlignment);
 404 }
 405 
 406 inline bool is_object_aligned(intptr_t addr) {
 407   return addr == align_object_size(addr);
 408 }
 409 
 410 // Pad out certain offsets to jlong alignment, in HeapWord units.
 411 
 412 inline intptr_t align_object_offset(intptr_t offset) {
 413   return align_size_up(offset, HeapWordsPerLong);
 414 }
 415 







 416 // The expected size in bytes of a cache line, used to pad data structures.
 417 #define DEFAULT_CACHE_LINE_SIZE 64
 418 
 419 // Bytes needed to pad type to avoid cache-line sharing; alignment should be the
 420 // expected cache line size (a power of two).  The first addend avoids sharing
 421 // when the start address is not a multiple of alignment; the second maintains
 422 // alignment of starting addresses that happen to be a multiple.
 423 #define PADDING_SIZE(type, alignment)                           \
 424   ((alignment) + align_size_up_(sizeof(type), alignment))
 425 
 426 // Templates to create a subclass padded to avoid cache line sharing.  These are
 427 // effective only when applied to derived-most (leaf) classes.
 428 
 429 // When no args are passed to the base ctor.
 430 template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE>
 431 class Padded: public T {
 432 private:
 433   char _pad_buf_[PADDING_SIZE(T, alignment)];
 434 };
 435 

1256 #define SSIZE_FORMAT          "%" PRIdPTR
1257 #define SIZE_FORMAT           "%" PRIuPTR
1258 #define SSIZE_FORMAT_W(width) "%" #width PRIdPTR
1259 #define SIZE_FORMAT_W(width)  "%" #width PRIuPTR
1260 
1261 #define INTX_FORMAT           "%" PRIdPTR
1262 #define UINTX_FORMAT          "%" PRIuPTR
1263 #define INTX_FORMAT_W(width)  "%" #width PRIdPTR
1264 #define UINTX_FORMAT_W(width) "%" #width PRIuPTR
1265 
1266 
1267 // Enable zap-a-lot if in debug version.
1268 
1269 # ifdef ASSERT
1270 # ifdef COMPILER2
1271 #   define ENABLE_ZAP_DEAD_LOCALS
1272 #endif /* COMPILER2 */
1273 # endif /* ASSERT */
1274 
1275 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0]))











1276 
1277 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP

 396 }
 397 
 398 // Align objects by rounding up their size, in HeapWord units.
 399 
 400 #define align_object_size_(size) align_size_up_(size, MinObjAlignment)
 401 
 402 inline intptr_t align_object_size(intptr_t size) {
 403   return align_size_up(size, MinObjAlignment);
 404 }
 405 
 406 inline bool is_object_aligned(intptr_t addr) {
 407   return addr == align_object_size(addr);
 408 }
 409 
 410 // Pad out certain offsets to jlong alignment, in HeapWord units.
 411 
 412 inline intptr_t align_object_offset(intptr_t offset) {
 413   return align_size_up(offset, HeapWordsPerLong);
 414 }
 415 
 416 // Clamp an address to be within a specific page
 417 // 1. If addr is on the page it is returned as is
 418 // 2. If addr is above the page_address the start of the *next* page will be returned
 419 // 3. Otherwise, if addr is below the page_address the start of the page will be returned
 420 address clamp_address_in_page(address addr, address page_address);
 421 
 422 
 423 // The expected size in bytes of a cache line, used to pad data structures.
 424 #define DEFAULT_CACHE_LINE_SIZE 64
 425 
 426 // Bytes needed to pad type to avoid cache-line sharing; alignment should be the
 427 // expected cache line size (a power of two).  The first addend avoids sharing
 428 // when the start address is not a multiple of alignment; the second maintains
 429 // alignment of starting addresses that happen to be a multiple.
 430 #define PADDING_SIZE(type, alignment)                           \
 431   ((alignment) + align_size_up_(sizeof(type), alignment))
 432 
 433 // Templates to create a subclass padded to avoid cache line sharing.  These are
 434 // effective only when applied to derived-most (leaf) classes.
 435 
 436 // When no args are passed to the base ctor.
 437 template <class T, size_t alignment = DEFAULT_CACHE_LINE_SIZE>
 438 class Padded: public T {
 439 private:
 440   char _pad_buf_[PADDING_SIZE(T, alignment)];
 441 };
 442 

1263 #define SSIZE_FORMAT          "%" PRIdPTR
1264 #define SIZE_FORMAT           "%" PRIuPTR
1265 #define SSIZE_FORMAT_W(width) "%" #width PRIdPTR
1266 #define SIZE_FORMAT_W(width)  "%" #width PRIuPTR
1267 
1268 #define INTX_FORMAT           "%" PRIdPTR
1269 #define UINTX_FORMAT          "%" PRIuPTR
1270 #define INTX_FORMAT_W(width)  "%" #width PRIdPTR
1271 #define UINTX_FORMAT_W(width) "%" #width PRIuPTR
1272 
1273 
1274 // Enable zap-a-lot if in debug version.
1275 
1276 # ifdef ASSERT
1277 # ifdef COMPILER2
1278 #   define ENABLE_ZAP_DEAD_LOCALS
1279 #endif /* COMPILER2 */
1280 # endif /* ASSERT */
1281 
1282 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0]))
1283 
1284 
1285 #ifndef PRODUCT
1286 
1287 // For unit testing only
1288 class GlobalDefinitions {
1289 public:
1290   static void test_globals();
1291 };
1292 
1293 #endif // PRODUCT
1294 
1295 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_HPP