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Kovid Goyal 2021-04-21 07:56:16 +05:30
parent e1f1572377
commit 25ae5a1284
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1 changed files with 21 additions and 80 deletions
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101
src/calibre/utils/windows/common.h
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@ -26,97 +26,38 @@ set_error_from_hresult(const char *file, const int line, const HRESULT hr, const
}
#define error_from_hresult(hr, ...) set_error_from_hresult(__FILE__, __LINE__, hr, __VA_ARGS__)
class wchar_raii {
template<typename T, void free_T(void*), T null>
class generic_raii {
private:
wchar_t *handle;
wchar_raii( const wchar_raii & ) ;
wchar_raii & operator=( const wchar_raii & ) ;
T handle;
generic_raii( const generic_raii & ) ;
generic_raii & operator=( const generic_raii & ) ;
public:
wchar_raii() : handle(NULL) {}
wchar_raii(wchar_t *h) : handle(h) {}
generic_raii(T h = null) : handle(h) {}
~generic_raii() { release(); }
~wchar_raii() { release(); }
void release() {
if (handle) {
PyMem_Free(handle);
handle = NULL;
free_T(handle);
handle = null;
}
}
wchar_t *ptr() { return handle; }
wchar_t *detach() { wchar_t *ans = handle; handle = NULL; return ans; }
void set_ptr(wchar_t *val) { handle = val; }
wchar_t **address() { return &handle; }
explicit operator bool() const { return handle != NULL; }
T ptr() { return handle; }
T detach() { T ans = handle; handle = null; return ans; }
void set_ptr(T val) { handle = val; }
T* address() { return &handle; }
explicit operator bool() const { return handle != null; }
T operator->() { return handle; }
};
class com_wchar_raii {
private:
wchar_t *handle;
com_wchar_raii( const com_wchar_raii & ) ;
com_wchar_raii & operator=( const com_wchar_raii & ) ;
public:
com_wchar_raii() : handle(NULL) {}
~com_wchar_raii() {
if (handle) {
CoTaskMemFree(handle);
handle = NULL;
}
}
wchar_t *ptr() { return handle; }
void set_ptr(wchar_t *val) { handle = val; }
wchar_t *detach() { wchar_t *ans = handle; handle = NULL; return ans; }
wchar_t **address() { return &handle; }
explicit operator bool() const { return handle != NULL; }
};
class pyobject_raii {
private:
PyObject *handle;
pyobject_raii( const pyobject_raii & ) ;
pyobject_raii & operator=( const pyobject_raii & ) ;
public:
pyobject_raii() : handle(NULL) {}
pyobject_raii(PyObject* h) : handle(h) {}
~pyobject_raii() { Py_CLEAR(handle); }
PyObject *ptr() { return handle; }
void set_ptr(PyObject *val) { handle = val; }
PyObject **address() { return &handle; }
explicit operator bool() const { return handle != NULL; }
PyObject *detach() { PyObject *ans = handle; handle = NULL; return ans; }
};
class handle_raii {
private:
HANDLE handle;
handle_raii( const handle_raii & ) ;
handle_raii & operator=( const handle_raii & ) ;
public:
handle_raii() : handle(INVALID_HANDLE_VALUE) {}
handle_raii(HANDLE h) : handle(h) {}
~handle_raii() {
if (handle != INVALID_HANDLE_VALUE) {
CloseHandle(handle);
handle = INVALID_HANDLE_VALUE;
}
}
HANDLE ptr() const { return handle; }
void set_ptr(HANDLE val) { handle = val; }
explicit operator bool() const { return handle != INVALID_HANDLE_VALUE; }
};
typedef generic_raii<wchar_t*, PyMem_Free, NULL> wchar_raii;
typedef generic_raii<wchar_t*, CoTaskMemFree, NULL> com_wchar_raii;
static inline void python_object_destructor(void *p) { PyObject *x = reinterpret_cast<PyObject*>(p); Py_XDECREF(x); }
typedef generic_raii<PyObject*, python_object_destructor, NULL> pyobject_raii;
static inline void handle_destructor(HANDLE p) { CloseHandle(p); }
typedef generic_raii<HANDLE, handle_destructor, INVALID_HANDLE_VALUE> handle_raii;
static int