diff options
Diffstat (limited to 'dbus/dbus-internals.h')
| -rw-r--r-- | dbus/dbus-internals.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/dbus/dbus-internals.h b/dbus/dbus-internals.h index deee366f..4643053b 100644 --- a/dbus/dbus-internals.h +++ b/dbus/dbus-internals.h @@ -283,6 +283,21 @@ _dbus_assert_error_xor_bool (const DBusError *error, #define _DBUS_ALIGN_ADDRESS(this, boundary) \ ((void*)_DBUS_ALIGN_VALUE(this, boundary)) +#define _DBUS_IS_ALIGNED(this, boundary) \ + ((((size_t) (uintptr_t) (this)) & ((size_t) (boundary) - 1)) == 0) + +/** + * Aligning a pointer to _DBUS_ALIGNOF(dbus_max_align_t) guarantees that all + * scalar types can be loaded/stored from/to such an address without incurring + * an alignment fault (or a slow misaligned access). + * This is based on C11 max_align_t, but falls back to DBusBasicValue for + * older C standards. + */ +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) +typedef max_align_t dbus_max_align_t; +#else +typedef DBusBasicValue dbus_max_align_t; +#endif DBUS_PRIVATE_EXPORT char* _dbus_strdup (const char *str); |