diff options
author | tsepez <tsepez@chromium.org> | 2016-03-29 15:04:21 -0700 |
---|---|---|
committer | Commit bot <commit-bot@chromium.org> | 2016-03-29 15:04:21 -0700 |
commit | 602aebc11a615971800d38f8d427a4e4f95c1134 (patch) | |
tree | ec995b42d2811f00064195e5ffe4ebf4feb4af81 /core/fxcrt/include/fx_memory.h | |
parent | bd56755ba86f2d87e24a3cee5cb92aa14a81bb27 (diff) | |
download | pdfium-602aebc11a615971800d38f8d427a4e4f95c1134.tar.xz |
Add a Retained Pointer smart class.
It's going to be hard to fix some XFA object leaks without
this. Put this in fxcrt/ as we should be able to make the
FX strings take advantage of this.
BUG=pdfium:55
Review URL: https://codereview.chromium.org/1805683002
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() {} |