new.cxx

   1 #include "new"
   2 #include "cstdlib"
   3
   4 namespace std {
   5
   6 const nothrow_t nothrow = {};
   7
   8 const char *bad_alloc::what()
   9 {
  10     return "memory full";
  11 }
  12
  13 }
  14
  15 static void *base_new(std::size_t size)
  16 {
  17     void *ptr;
  18     ptr = std::malloc(size);
  19     if (ptr){
  20         return ptr;
  21     } else {
  22         throw std::bad_alloc();
  23     }
  24 }
  25
  26 void *operator new (std::size_t size)
  27 {
  28     return base_new(size);
  29 }
  30
  31 void *operator new[] (std::size_t size)
  32 {
  33     return base_new(size);
  34 }
  35
  36 void operator delete (void *p) throw()
  37 {
  38     free(p);
  39 }
  40
  41 void operator delete[] (void *p) throw()
  42 {
  43     free(p);
  44 }
  45
  46 void *operator new (std::size_t, void *p) throw()
  47 {
  48     return p;
  49 }
  50
  51 void *operator new[] (std::size_t, void *p) throw()
  52 {
  53     return p;
  54 }
  55
  56 void *operator new (std::size_t size, std::nothrow_t) throw()
  57 {
  58     return std::malloc(size);
  59 }
  60
  61 void *operator new[] (std::size_t size, std::nothrow_t) throw()
  62 {
  63     return std::malloc(size);
  64 }