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 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 47 void Malloced::Delete(void* p) { 48 free(p); 49 } 50 51 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 61 void* Embedded::operator new(size_t size) { 62 UNREACHABLE(); 63 return invalid; 64 } 65 66 67 void Embedded::operator delete(void* p) { 68 UNREACHABLE(); 69 } 70 71 72 void* AllStatic::operator new(size_t size) { 73 UNREACHABLE(); 74 return invalid; 75 } 76 77 78 void AllStatic::operator delete(void* p) { 79 UNREACHABLE(); 80 } 81 82 #endif 83 84 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 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 } 102 103 104 void PreallocatedStorage::LinkTo(PreallocatedStorage* other) { 105 next_ = other->next_; 106 other->next_->previous_ = this; 107 previous_ = other; 108 other->next_ = this; 109 } 110 111 112 void PreallocatedStorage::Unlink() { 113 next_->previous_ = previous_; 114 previous_->next_ = next_; 115 } 116 117 118 PreallocatedStorage::PreallocatedStorage(size_t size) 119 : size_(size) { 120 previous_ = next_ = this; 121 } 122 123 } } // namespace v8::internal 124