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28 * memory.cc - Contains stub definition of C++ new/delete operators.
30 * These definitions are intended to be used for testing and are weak symbols
31 * to allow them to be replaced by definitions from a STL implementation.
32 * These versions simply wrap malloc() and free(), they do not provide a
33 * C++-specific allocator.
38 #include "stdexcept.h"
48 /// The type of the function called when allocation fails.
49 typedef void (*new_handler)();
51 * The function to call when allocation fails. By default, there is no
52 * handler and a bad allocation exception is thrown if an allocation fails.
54 static new_handler new_handl;
59 * Sets a function to be called when there is a failure in new.
62 new_handler set_new_handler(new_handler handler)
64 return ATOMIC_SWAP(&new_handl, handler);
67 new_handler get_new_handler(void)
69 return ATOMIC_LOAD(&new_handl);
74 #if __cplusplus < 201103L
75 #define NOEXCEPT throw()
76 #define BADALLOC throw(std::bad_alloc)
78 #define NOEXCEPT noexcept
84 void* operator new(size_t size) BADALLOC
90 void * mem = malloc(size);
93 new_handler h = std::get_new_handler();
100 throw std::bad_alloc();
108 __attribute__((weak))
109 void* operator new(size_t size, const std::nothrow_t &) NOEXCEPT
112 return :: operator new(size);
114 // nothrow operator new should return NULL in case of
115 // std::bad_alloc exception in new handler
121 __attribute__((weak))
122 void operator delete(void * ptr) NOEXCEPT
128 __attribute__((weak))
129 void * operator new[](size_t size) BADALLOC
131 return ::operator new(size);
135 __attribute__((weak))
136 void * operator new[](size_t size, const std::nothrow_t &) NOEXCEPT
139 return ::operator new[](size);
141 // nothrow operator new should return NULL in case of
142 // std::bad_alloc exception in new handler
148 __attribute__((weak))
149 void operator delete[](void * ptr) NOEXCEPT
151 ::operator delete(ptr);