1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 #include "allocation.h"
29
30 #include <stdlib.h> // For free, malloc.
31 #include <string.h> // For memcpy.
32 #include "checks.h"
33 #include "utils.h"
34
35 namespace v8 {
36 namespace internal {
37
New(size_t size)38 void* Malloced::New(size_t size) {
39 void* result = malloc(size);
40 if (result == NULL) {
41 v8::internal::FatalProcessOutOfMemory("Malloced operator new");
42 }
43 return result;
44 }
45
46
Delete(void * p)47 void Malloced::Delete(void* p) {
48 free(p);
49 }
50
51
FatalProcessOutOfMemory()52 void Malloced::FatalProcessOutOfMemory() {
53 v8::internal::FatalProcessOutOfMemory("Out of memory");
54 }
55
56
57 #ifdef DEBUG
58
59 static void* invalid = static_cast<void*>(NULL);
60
operator new(size_t size)61 void* Embedded::operator new(size_t size) {
62 UNREACHABLE();
63 return invalid;
64 }
65
66
operator delete(void * p)67 void Embedded::operator delete(void* p) {
68 UNREACHABLE();
69 }
70
71
operator new(size_t size)72 void* AllStatic::operator new(size_t size) {
73 UNREACHABLE();
74 return invalid;
75 }
76
77
operator delete(void * p)78 void AllStatic::operator delete(void* p) {
79 UNREACHABLE();
80 }
81
82 #endif
83
84
StrDup(const char * str)85 char* StrDup(const char* str) {
86 int length = StrLength(str);
87 char* result = NewArray<char>(length + 1);
88 memcpy(result, str, length);
89 result[length] = '\0';
90 return result;
91 }
92
93
StrNDup(const char * str,int n)94 char* StrNDup(const char* str, int n) {
95 int length = StrLength(str);
96 if (n < length) length = n;
97 char* result = NewArray<char>(length + 1);
98 memcpy(result, str, length);
99 result[length] = '\0';
100 return result;
101 }
102
103
LinkTo(PreallocatedStorage * other)104 void PreallocatedStorage::LinkTo(PreallocatedStorage* other) {
105 next_ = other->next_;
106 other->next_->previous_ = this;
107 previous_ = other;
108 other->next_ = this;
109 }
110
111
Unlink()112 void PreallocatedStorage::Unlink() {
113 next_->previous_ = previous_;
114 previous_->next_ = next_;
115 }
116
117
PreallocatedStorage(size_t size)118 PreallocatedStorage::PreallocatedStorage(size_t size)
119 : size_(size) {
120 previous_ = next_ = this;
121 }
122
123 } } // namespace v8::internal
124