diff options
Diffstat (limited to 'core/fxcrt/include/fx_memory.h')
-rw-r--r-- | core/fxcrt/include/fx_memory.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/core/fxcrt/include/fx_memory.h b/core/fxcrt/include/fx_memory.h index c3dafc8d5e..2614016550 100644 --- a/core/fxcrt/include/fx_memory.h +++ b/core/fxcrt/include/fx_memory.h @@ -74,6 +74,32 @@ inline void* FX_ReallocOrDie(void* ptr, #define FX_Free(ptr) free(ptr) +// The FX_ArraySize(arr) macro returns the # of elements in an array arr. +// The expression is a compile-time constant, and therefore can be +// used in defining new arrays, for example. If you use FX_ArraySize on +// a pointer by mistake, you will get a compile-time error. +// +// One caveat is that FX_ArraySize() doesn't accept any array of an +// anonymous type or a type defined inside a function. +#define FX_ArraySize(array) (sizeof(ArraySizeHelper(array))) + +// This template function declaration is used in defining FX_ArraySize. +// Note that the function doesn't need an implementation, as we only +// use its type. +template <typename T, size_t N> +char(&ArraySizeHelper(T(&array)[N]))[N]; + +// Used with std::unique_ptr to FX_Free raw memory. +struct FxFreeDeleter { + inline void operator()(void* ptr) const { FX_Free(ptr); } +}; + +// Used with std::unique_ptr to Release() objects that can't be deleted. +template <class T> +struct ReleaseDeleter { + inline void operator()(T* ptr) const { ptr->Release(); } +}; + class CFX_DestructObject { public: virtual ~CFX_DestructObject() {} |