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Issue 1012023002: Merge old data and pointer space. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_GLOBALS_H_ 5 #ifndef V8_GLOBALS_H_
6 #define V8_GLOBALS_H_ 6 #define V8_GLOBALS_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 #include <stdint.h> 9 #include <stdint.h>
10 10
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402 typedef bool (*WeakSlotCallbackWithHeap)(Heap* heap, Object** pointer); 402 typedef bool (*WeakSlotCallbackWithHeap)(Heap* heap, Object** pointer);
403 403
404 // ----------------------------------------------------------------------------- 404 // -----------------------------------------------------------------------------
405 // Miscellaneous 405 // Miscellaneous
406 406
407 // NOTE: SpaceIterator depends on AllocationSpace enumeration values being 407 // NOTE: SpaceIterator depends on AllocationSpace enumeration values being
408 // consecutive. 408 // consecutive.
409 // Keep this enum in sync with the ObjectSpace enum in v8.h 409 // Keep this enum in sync with the ObjectSpace enum in v8.h
410 enum AllocationSpace { 410 enum AllocationSpace {
411 NEW_SPACE, // Semispaces collected with copying collector. 411 NEW_SPACE, // Semispaces collected with copying collector.
412 OLD_POINTER_SPACE, // May contain pointers to new space. 412 OLD_SPACE, // May contain pointers to new space.
413 OLD_DATA_SPACE, // Must not have pointers to new space.
414 CODE_SPACE, // No pointers to new space, marked executable. 413 CODE_SPACE, // No pointers to new space, marked executable.
415 MAP_SPACE, // Only and all map objects. 414 MAP_SPACE, // Only and all map objects.
416 CELL_SPACE, // Only and all cell objects. 415 CELL_SPACE, // Only and all cell objects.
417 PROPERTY_CELL_SPACE, // Only and all global property cell objects. 416 PROPERTY_CELL_SPACE, // Only and all global property cell objects.
418 LO_SPACE, // Promoted large objects. 417 LO_SPACE, // Promoted large objects.
419 418
420 FIRST_SPACE = NEW_SPACE, 419 FIRST_SPACE = NEW_SPACE,
421 LAST_SPACE = LO_SPACE, 420 LAST_SPACE = LO_SPACE,
422 FIRST_PAGED_SPACE = OLD_POINTER_SPACE, 421 FIRST_PAGED_SPACE = OLD_SPACE,
423 LAST_PAGED_SPACE = PROPERTY_CELL_SPACE 422 LAST_PAGED_SPACE = PROPERTY_CELL_SPACE
424 }; 423 };
425 const int kSpaceTagSize = 3; 424 const int kSpaceTagSize = 3;
426 const int kSpaceTagMask = (1 << kSpaceTagSize) - 1; 425 const int kSpaceTagMask = (1 << kSpaceTagSize) - 1;
427 426
428 427
429 // A flag that indicates whether objects should be pretenured when 428 // A flag that indicates whether objects should be pretenured when
430 // allocated (allocated directly into the old generation) or not 429 // allocated (allocated directly into the old generation) or not
431 // (allocated in the young generation if the object size and type 430 // (allocated in the young generation if the object size and type
432 // allows). 431 // allows).
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926 inline FunctionKind WithObjectLiteralBit(FunctionKind kind) { 925 inline FunctionKind WithObjectLiteralBit(FunctionKind kind) {
927 kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral); 926 kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral);
928 DCHECK(IsValidFunctionKind(kind)); 927 DCHECK(IsValidFunctionKind(kind));
929 return kind; 928 return kind;
930 } 929 }
931 } } // namespace v8::internal 930 } } // namespace v8::internal
932 931
933 namespace i = v8::internal; 932 namespace i = v8::internal;
934 933
935 #endif // V8_GLOBALS_H_ 934 #endif // V8_GLOBALS_H_
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