| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| /** |
| * @file sys/swap.h |
| * @brief Swap control. |
| */ |
| |
| #include <sys/cdefs.h> |
| |
| __BEGIN_DECLS |
| |
| /** swapon() flag to discard pages. */ |
| #define SWAP_FLAG_DISCARD 0x10000 |
| |
| /** |
| * swapon() flag to give this swap area a non-default priority. |
| * The priority is also encoded in the flags: |
| * `(priority << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK`. |
| */ |
| #define SWAP_FLAG_PREFER 0x8000 |
| /** See SWAP_FLAG_PREFER. */ |
| #define SWAP_FLAG_PRIO_MASK 0x7fff |
| /** See SWAP_FLAG_PREFER. */ |
| #define SWAP_FLAG_PRIO_SHIFT 0 |
| |
| /** |
| * [swapon(2)](http://man7.org/linux/man-pages/man2/swapon.2.html) enables swapping. |
| * |
| * Returns 0 on success, and returns -1 and sets `errno` on failure. |
| * |
| * Available since API level 19. |
| */ |
| int swapon(const char* __path, int __flags) __INTRODUCED_IN(19); |
| |
| /** |
| * [swapoff(2)](http://man7.org/linux/man-pages/man2/swapoff.2.html) disables swapping. |
| * |
| * Returns 0 on success, and returns -1 and sets `errno` on failure. |
| * |
| * Available since API level 19. |
| */ |
| int swapoff(const char* __path) __INTRODUCED_IN(19); |
| |
| __END_DECLS |
