atomic_util.h

 1/* Copyright 2021 QMK
 2 *
 3 * This program is free software: you can redistribute it and/or modify
 4 * it under the terms of the GNU General Public License as published by
 5 * the Free Software Foundation, either version 3 of the License, or
 6 * (at your option) any later version.
 7 *
 8 * This program is distributed in the hope that it will be useful,
 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
15 */
16#pragma once
17
18// Macro to help make GPIO and other controls atomic.
19
20#ifndef IGNORE_ATOMIC_BLOCK
21#    if __has_include_next("atomic_util.h")
22#        include_next "atomic_util.h" /* Include the platforms atomic.h */
23#    else
24#        define ATOMIC_BLOCK _Static_assert(0, "ATOMIC_BLOCK not implemented")
25#        define ATOMIC_BLOCK_RESTORESTATE _Static_assert(0, "ATOMIC_BLOCK_RESTORESTATE not implemented")
26#        define ATOMIC_BLOCK_FORCEON _Static_assert(0, "ATOMIC_BLOCK_FORCEON not implemented")
27#        define ATOMIC_FORCEON _Static_assert(0, "ATOMIC_FORCEON not implemented")
28#        define ATOMIC_RESTORESTATE _Static_assert(0, "ATOMIC_RESTORESTATE not implemented")
29#    endif
30#else /* do nothing atomic macro */
31#    define ATOMIC_BLOCK(t) for (uint8_t __ToDo = 1; __ToDo; __ToDo = 0)
32#    define ATOMIC_FORCEON
33#    define ATOMIC_RESTORESTATE
34#    define ATOMIC_BLOCK_RESTORESTATE ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
35#    define ATOMIC_BLOCK_FORCEON ATOMIC_BLOCK(ATOMIC_FORCEON)
36#endif