xref: /openbmc/qemu/block/progress_meter.c (revision df4bbc9d)
1 /*
2  * Helper functionality for some process progress tracking.
3  *
4  * Copyright (c) 2011 IBM Corp.
5  * Copyright (c) 2012, 2018 Red Hat, Inc.
6  * Copyright (c) 2020 Virtuozzo International GmbH
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a copy
9  * of this software and associated documentation files (the "Software"), to deal
10  * in the Software without restriction, including without limitation the rights
11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12  * copies of the Software, and to permit persons to whom the Software is
13  * furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice shall be included in
16  * all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24  * THE SOFTWARE.
25  */
26 
27 #include "qemu/osdep.h"
28 #include "qemu/coroutine.h"
29 #include "qemu/progress_meter.h"
30 
progress_init(ProgressMeter * pm)31 void progress_init(ProgressMeter *pm)
32 {
33     qemu_mutex_init(&pm->lock);
34 }
35 
progress_destroy(ProgressMeter * pm)36 void progress_destroy(ProgressMeter *pm)
37 {
38     qemu_mutex_destroy(&pm->lock);
39 }
40 
progress_get_snapshot(ProgressMeter * pm,uint64_t * current,uint64_t * total)41 void progress_get_snapshot(ProgressMeter *pm, uint64_t *current,
42                            uint64_t *total)
43 {
44     QEMU_LOCK_GUARD(&pm->lock);
45 
46     *current = pm->current;
47     *total = pm->total;
48 }
49 
progress_work_done(ProgressMeter * pm,uint64_t done)50 void progress_work_done(ProgressMeter *pm, uint64_t done)
51 {
52     QEMU_LOCK_GUARD(&pm->lock);
53     pm->current += done;
54 }
55 
progress_set_remaining(ProgressMeter * pm,uint64_t remaining)56 void progress_set_remaining(ProgressMeter *pm, uint64_t remaining)
57 {
58     QEMU_LOCK_GUARD(&pm->lock);
59     pm->total = pm->current + remaining;
60 }
61 
progress_increase_remaining(ProgressMeter * pm,uint64_t delta)62 void progress_increase_remaining(ProgressMeter *pm, uint64_t delta)
63 {
64     QEMU_LOCK_GUARD(&pm->lock);
65     pm->total += delta;
66 }
67