gutils.h

windows平台下开发gtk程序所需要的库和头文件等

#define g_getenv g_getenv_utf8
#define g_setenv g_setenv_utf8
#define g_unsetenv g_unsetenv_utf8
#define g_find_program_in_path g_find_program_in_path_utf8
#endif

G_CONST_RETURN gchar* g_getenv             (const gchar *variable);
gboolean              g_setenv             (const gchar *variable,
					    const gchar *value,
					    gboolean     overwrite);
void                  g_unsetenv           (const gchar *variable);
gchar**               g_listenv            (void);

/* private */
const gchar*	     _g_getenv_nomalloc	   (const gchar	*variable,
					    gchar        buffer[1024]);

/* we try to provide a useful equivalent for ATEXIT if it is
 * not defined, but use is actually abandoned. people should
 * use g_atexit() instead.
 */
typedef	void		(*GVoidFunc)		(void);
#ifndef ATEXIT
# define ATEXIT(proc)	g_ATEXIT(proc)
#else
# define G_NATIVE_ATEXIT
#endif /* ATEXIT */
/* we use a GLib function as a replacement for ATEXIT, so
 * the programmer is not required to check the return value
 * (if there is any in the implementation) and doesn't encounter
 * missing include files.
 */
void	g_atexit		(GVoidFunc    func);

#ifdef G_OS_WIN32
/* It's a bad idea to wrap atexit() on Windows. If the GLib DLL calls
 * atexit(), the function will be called when the GLib DLL is detached
 * from the program, which is not what the caller wants. The caller
 * wants the function to be called when it *itself* exits (or is
 * detached, in case the caller, too, is a DLL).
 */
int atexit (void (*)(void));
#define g_atexit(func) atexit(func)
#endif

/* Look for an executable in PATH, following execvp() rules */
gchar*  g_find_program_in_path  (const gchar *program);

/* Bit tests
 */
G_INLINE_FUNC gint	g_bit_nth_lsf (gulong  mask,
				       gint    nth_bit) G_GNUC_CONST;
G_INLINE_FUNC gint	g_bit_nth_msf (gulong  mask,
				       gint    nth_bit) G_GNUC_CONST;
G_INLINE_FUNC guint	g_bit_storage (gulong  number) G_GNUC_CONST;

/* Trash Stacks
 * elements need to be >= sizeof (gpointer)
 */
typedef struct _GTrashStack     GTrashStack;
struct _GTrashStack
{
  GTrashStack *next;
};

G_INLINE_FUNC void	g_trash_stack_push	(GTrashStack **stack_p,
						 gpointer      data_p);
G_INLINE_FUNC gpointer	g_trash_stack_pop	(GTrashStack **stack_p);
G_INLINE_FUNC gpointer	g_trash_stack_peek	(GTrashStack **stack_p);
G_INLINE_FUNC guint	g_trash_stack_height	(GTrashStack **stack_p);

/* inline function implementations
 */
#if defined (G_CAN_INLINE) || defined (__G_UTILS_C__)
G_INLINE_FUNC gint
g_bit_nth_lsf (gulong mask,
	       gint   nth_bit)
{
  if (G_UNLIKELY (nth_bit < -1))
    nth_bit = -1;
  while (nth_bit < ((GLIB_SIZEOF_LONG * 8) - 1))
    {
      nth_bit++;
      if (mask & (1UL << nth_bit))
	return nth_bit;
    }
  return -1;
}
G_INLINE_FUNC gint
g_bit_nth_msf (gulong mask,
	       gint   nth_bit)
{
  if (nth_bit < 0 || G_UNLIKELY (nth_bit > GLIB_SIZEOF_LONG * 8))
    nth_bit = GLIB_SIZEOF_LONG * 8;
  while (nth_bit > 0)
    {
      nth_bit--;
      if (mask & (1UL << nth_bit))
	return nth_bit;
    }
  return -1;
}
G_INLINE_FUNC guint
g_bit_storage (gulong number)
{
#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)
  return G_LIKELY (number) ?
	   ((GLIB_SIZEOF_LONG * 8 - 1) ^ __builtin_clzl(number)) + 1 : 1;
#else
  register guint n_bits = 0;
  
  do
    {
      n_bits++;
      number >>= 1;
    }
  while (number);
  return n_bits;
#endif
}
G_INLINE_FUNC void
g_trash_stack_push (GTrashStack **stack_p,
		    gpointer      data_p)
{
  GTrashStack *data = (GTrashStack *) data_p;

  data->next = *stack_p;
  *stack_p = data;
}
G_INLINE_FUNC gpointer
g_trash_stack_pop (GTrashStack **stack_p)
{
  GTrashStack *data;

  data = *stack_p;
  if (data)
    {
      *stack_p = data->next;
      /* NULLify private pointer here, most platforms store NULL as
       * subsequent 0 bytes
       */
      data->next = NULL;
    }

  return data;
}
G_INLINE_FUNC gpointer
g_trash_stack_peek (GTrashStack **stack_p)
{
  GTrashStack *data;

  data = *stack_p;

  return data;
}
G_INLINE_FUNC guint
g_trash_stack_height (GTrashStack **stack_p)
{
  GTrashStack *data;
  guint i = 0;

  for (data = *stack_p; data; data = data->next)
    i++;

  return i;
}
#endif  /* G_CAN_INLINE || __G_UTILS_C__ */

/* Glib version.
 * we prefix variable declarations so they can
 * properly get exported in windows dlls.
 */
GLIB_VAR const guint glib_major_version;
GLIB_VAR const guint glib_minor_version;
GLIB_VAR const guint glib_micro_version;
GLIB_VAR const guint glib_interface_age;
GLIB_VAR const guint glib_binary_age;

const gchar * glib_check_version (guint required_major,
                                  guint required_minor,
                                  guint required_micro);

#define GLIB_CHECK_VERSION(major,minor,micro)    \
    (GLIB_MAJOR_VERSION > (major) || \
     (GLIB_MAJOR_VERSION == (major) && GLIB_MINOR_VERSION > (minor)) || \
     (GLIB_MAJOR_VERSION == (major) && GLIB_MINOR_VERSION == (minor) && \
      GLIB_MICRO_VERSION >= (micro)))

G_END_DECLS

#ifndef G_DISABLE_DEPRECATED

/*
 * This macro is deprecated. This DllMain() is too complex. It is
 * recommended to write an explicit minimal DLlMain() that just saves
 * the handle to the DLL and then use that handle instead, for
 * instance passing it to
 * g_win32_get_package_installation_directory_of_module().
 *
 * On Windows, this macro defines a DllMain function that stores the
 * actual DLL name that the code being compiled will be included in.
 * STATIC should be empty or 'static'. DLL_NAME is the name of the
 * (pointer to the) char array where the DLL name will be stored. If
 * this is used, you must also include <windows.h>. If you need a more complex
 * DLL entry point function, you cannot use this.
 *
 * On non-Windows platforms, expands to nothing.
 */

#ifndef G_PLATFORM_WIN32
# define G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name)
#else
# define G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name)			\
static char *dll_name;							\
									\
BOOL WINAPI								\
DllMain (HINSTANCE hinstDLL,						\
	 DWORD     fdwReason,						\
	 LPVOID    lpvReserved)						\
{									\
  wchar_t wcbfr[1000];							\
  char *tem;								\
  switch (fdwReason)							\
    {									\
    case DLL_PROCESS_ATTACH:						\
      GetModuleFileNameW ((HMODULE) hinstDLL, wcbfr, G_N_ELEMENTS (wcbfr)); \
      tem = g_utf16_to_utf8 (wcbfr, -1, NULL, NULL, NULL);		\
      dll_name = g_path_get_basename (tem);				\
      g_free (tem);							\
      break;								\
    }									\
									\
  return TRUE;								\
}

#endif	/* !G_DISABLE_DEPRECATED */

#endif /* G_PLATFORM_WIN32 */

#endif /* __G_UTILS_H__ */