mirror of
https://github.com/labwc/labwc.git
synced 2026-04-12 08:21:13 -04:00
effd80c7f6
This makes the code a bit more readable IMHO (and forces us to be consistent with event handler function names). Adjust scripts/checkpatch.pl to not complain.
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
#ifndef LABWC_MACROS_H
|
|
#define LABWC_MACROS_H
|
|
|
|
/**
|
|
* ARRAY_SIZE() - Get the number of elements in array.
|
|
* @arr: array to be sized
|
|
*
|
|
* This does not work on pointers.
|
|
*
|
|
* Recent versions of GCC and clang support -Werror=sizeof-pointer-div
|
|
* and thus avoids using constructs such as:
|
|
*
|
|
* #define same_type(a, b) (__builtin_types_compatible_p(typeof(a), typeof(b)) == 1)
|
|
* #define ARRAY_SIZE(a) ({ static_assert(!same_type(a, &(a)[0])); sizeof(a) / sizeof(a[0]); })
|
|
*/
|
|
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
|
|
|
|
/**
|
|
* CONNECT_SIGNAL() - Connect a signal handler function to a wl_signal.
|
|
*
|
|
* @param src Signal emitter (struct containing wl_signal)
|
|
* @param dest Signal receiver (struct containing wl_listener)
|
|
* @param name Signal name
|
|
*
|
|
* This assumes that the common pattern is followed where:
|
|
* - the wl_signal is (*src).events.<name>
|
|
* - the wl_listener is (*dest).<name>
|
|
* - the signal handler function is named handle_<name>
|
|
*/
|
|
#define CONNECT_SIGNAL(src, dest, name) \
|
|
(dest)->name.notify = handle_##name; \
|
|
wl_signal_add(&(src)->events.name, &(dest)->name)
|
|
|
|
#endif /* LABWC_MACROS_H */
|