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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkVarAlloc.h" | 8 #include "SkVarAlloc.h" |
9 | 9 |
10 // We use non-standard malloc diagnostic methods to make sure our allocations ar
e sized well. | 10 // We use non-standard malloc diagnostic methods to make sure our allocations ar
e sized well. |
(...skipping 10 matching lines...) Expand all Loading... |
21 static Block* Alloc(Block* prev, size_t size, unsigned flags) { | 21 static Block* Alloc(Block* prev, size_t size, unsigned flags) { |
22 SkASSERT(size >= sizeof(Block)); | 22 SkASSERT(size >= sizeof(Block)); |
23 Block* b = (Block*)sk_malloc_flags(size, flags); | 23 Block* b = (Block*)sk_malloc_flags(size, flags); |
24 b->prev = prev; | 24 b->prev = prev; |
25 return b; | 25 return b; |
26 } | 26 } |
27 }; | 27 }; |
28 | 28 |
29 SkVarAlloc::SkVarAlloc(size_t minLgSize) | 29 SkVarAlloc::SkVarAlloc(size_t minLgSize) |
30 : fBytesAllocated(0) | 30 : fBytesAllocated(0) |
31 , fByte(NULL) | 31 , fByte(nullptr) |
32 , fRemaining(0) | 32 , fRemaining(0) |
33 , fLgSize(minLgSize) | 33 , fLgSize(minLgSize) |
34 , fBlock(NULL) {} | 34 , fBlock(nullptr) {} |
35 | 35 |
36 SkVarAlloc::SkVarAlloc(size_t minLgSize, char* storage, size_t len) | 36 SkVarAlloc::SkVarAlloc(size_t minLgSize, char* storage, size_t len) |
37 : fBytesAllocated(0) | 37 : fBytesAllocated(0) |
38 , fByte(storage) | 38 , fByte(storage) |
39 , fRemaining(len) | 39 , fRemaining(len) |
40 , fLgSize(minLgSize) | 40 , fLgSize(minLgSize) |
41 , fBlock(NULL) {} | 41 , fBlock(nullptr) {} |
42 | 42 |
43 SkVarAlloc::~SkVarAlloc() { | 43 SkVarAlloc::~SkVarAlloc() { |
44 Block* b = fBlock; | 44 Block* b = fBlock; |
45 while (b) { | 45 while (b) { |
46 Block* prev = b->prev; | 46 Block* prev = b->prev; |
47 sk_free(b); | 47 sk_free(b); |
48 b = prev; | 48 b = prev; |
49 } | 49 } |
50 } | 50 } |
51 | 51 |
52 void SkVarAlloc::makeSpace(size_t bytes, unsigned flags) { | 52 void SkVarAlloc::makeSpace(size_t bytes, unsigned flags) { |
53 SkASSERT(SkIsAlignPtr(bytes)); | 53 SkASSERT(SkIsAlignPtr(bytes)); |
54 | 54 |
55 size_t alloc = 1<<fLgSize++; | 55 size_t alloc = 1<<fLgSize++; |
56 while (alloc < bytes + sizeof(Block)) { | 56 while (alloc < bytes + sizeof(Block)) { |
57 alloc *= 2; | 57 alloc *= 2; |
58 } | 58 } |
59 fBytesAllocated += alloc; | 59 fBytesAllocated += alloc; |
60 fBlock = Block::Alloc(fBlock, alloc, flags); | 60 fBlock = Block::Alloc(fBlock, alloc, flags); |
61 fByte = fBlock->data(); | 61 fByte = fBlock->data(); |
62 fRemaining = alloc - sizeof(Block); | 62 fRemaining = alloc - sizeof(Block); |
63 | 63 |
64 #if defined(SK_BUILD_FOR_MAC) | 64 #if defined(SK_BUILD_FOR_MAC) |
65 SkASSERT(alloc == malloc_good_size(alloc)); | 65 SkASSERT(alloc == malloc_good_size(alloc)); |
66 #elif defined(SK_BUILD_FOR_UNIX) && !defined(__UCLIBC__) | 66 #elif defined(SK_BUILD_FOR_UNIX) && !defined(__UCLIBC__) |
67 // TODO(mtklein): tune so we can assert something like this | 67 // TODO(mtklein): tune so we can assert something like this |
68 //SkASSERT(alloc == malloc_usable_size(fBlock)); | 68 //SkASSERT(alloc == malloc_usable_size(fBlock)); |
69 #endif | 69 #endif |
70 } | 70 } |
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