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Issue 7374002: Refactor allocation policies. Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 5 months ago
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1 // Copyright 2009 the V8 project authors. All rights reserved. 1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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28 #include <stdlib.h> 28 #include <stdlib.h>
29 #include <string.h> 29 #include <string.h>
30 #include "v8.h" 30 #include "v8.h"
31 #include "cctest.h" 31 #include "cctest.h"
32 32
33 using namespace v8::internal; 33 using namespace v8::internal;
34 34
35 // Use a testing allocator that clears memory before deletion. 35 // Use a testing allocator that clears memory before deletion.
36 class ZeroingAllocationPolicy { 36 class ZeroingAllocationPolicy {
37 public: 37 public:
38 static void* New(size_t size) { 38 void* New(size_t size) {
39 // Stash the size in the first word to use for Delete. 39 // Stash the size in the first word to use for Delete.
40 size_t true_size = size + sizeof(size_t); 40 size_t true_size = size + sizeof(size_t);
41 size_t* result = reinterpret_cast<size_t*>(malloc(true_size)); 41 size_t* result = reinterpret_cast<size_t*>(malloc(true_size));
42 if (result == NULL) return result; 42 if (result == NULL) return result;
43 *result = true_size; 43 *result = true_size;
44 return result + 1; 44 return result + 1;
45 } 45 }
46 46
47 static void Delete(void* ptr) { 47 void Delete(void* ptr) {
48 size_t* true_ptr = reinterpret_cast<size_t*>(ptr) - 1; 48 size_t* true_ptr = reinterpret_cast<size_t*>(ptr) - 1;
49 memset(true_ptr, 0, *true_ptr); 49 memset(true_ptr, 0, *true_ptr);
50 free(true_ptr); 50 free(true_ptr);
51 } 51 }
52 }; 52 };
53 53
54 // Check that we can add (a reference to) an element of the list 54 // Check that we can add (a reference to) an element of the list
55 // itself. 55 // itself.
56 TEST(ListAdd) { 56 TEST(ListAdd) {
57 // Add elements to the list to grow it to its capacity. 57 // Add elements to the list to grow it to its capacity.
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131 131
132 132
133 TEST(Clear) { 133 TEST(Clear) {
134 List<int> list(4); 134 List<int> list(4);
135 CHECK_EQ(0, list.length()); 135 CHECK_EQ(0, list.length());
136 for (int i = 0; i < 4; ++i) list.Add(i); 136 for (int i = 0; i < 4; ++i) list.Add(i);
137 CHECK_EQ(4, list.length()); 137 CHECK_EQ(4, list.length());
138 list.Clear(); 138 list.Clear();
139 CHECK_EQ(0, list.length()); 139 CHECK_EQ(0, list.length());
140 } 140 }
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