Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU progress printing utility functions |
| 3 | * |
| 4 | * Copyright (C) 2011 Jes Sorensen <Jes.Sorensen@redhat.com> |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "qemu-common.h" |
| 26 | #include "osdep.h" |
| 27 | #include "sysemu.h" |
| 28 | #include <stdio.h> |
Jes Sorensen | a55c73b | 2011-04-27 14:31:50 +0200 | [diff] [blame^] | 29 | #include <signal.h> |
Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 30 | |
| 31 | struct progress_state { |
| 32 | int enabled; |
| 33 | float current; |
| 34 | float last_print; |
| 35 | float min_skip; |
Jes Sorensen | a55c73b | 2011-04-27 14:31:50 +0200 | [diff] [blame^] | 36 | void (*print)(void); |
| 37 | void (*end)(void); |
Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 38 | }; |
| 39 | |
| 40 | static struct progress_state state; |
| 41 | |
| 42 | /* |
| 43 | * Simple progress print function. |
| 44 | * @percent relative percent of current operation |
| 45 | * @max percent of total operation |
| 46 | */ |
| 47 | static void progress_simple_print(void) |
| 48 | { |
| 49 | if (state.enabled) { |
| 50 | printf(" (%3.2f/100%%)\r", state.current); |
| 51 | fflush(stdout); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | static void progress_simple_end(void) |
| 56 | { |
Jes Sorensen | a55c73b | 2011-04-27 14:31:50 +0200 | [diff] [blame^] | 57 | printf("\n"); |
| 58 | } |
| 59 | |
| 60 | static void progress_simple_init(void) |
| 61 | { |
| 62 | state.print = progress_simple_print; |
| 63 | state.end = progress_simple_end; |
| 64 | } |
| 65 | |
| 66 | #ifdef CONFIG_POSIX |
| 67 | static void sigusr_print(int signal) |
| 68 | { |
| 69 | printf(" (%3.2f/100%%)\n", state.current); |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | static void progress_dummy_print(void) |
| 74 | { |
| 75 | } |
| 76 | |
| 77 | static void progress_dummy_end(void) |
| 78 | { |
| 79 | } |
| 80 | |
| 81 | static void progress_dummy_init(void) |
| 82 | { |
| 83 | #ifdef CONFIG_POSIX |
| 84 | struct sigaction action; |
| 85 | |
| 86 | memset(&action, 0, sizeof(action)); |
| 87 | sigfillset(&action.sa_mask); |
| 88 | action.sa_handler = sigusr_print; |
| 89 | action.sa_flags = 0; |
| 90 | sigaction(SIGUSR1, &action, NULL); |
| 91 | #endif |
| 92 | |
| 93 | state.print = progress_dummy_print; |
| 94 | state.end = progress_dummy_end; |
Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | void qemu_progress_init(int enabled, float min_skip) |
| 98 | { |
| 99 | state.enabled = enabled; |
| 100 | state.min_skip = min_skip; |
Jes Sorensen | a55c73b | 2011-04-27 14:31:50 +0200 | [diff] [blame^] | 101 | if (enabled) { |
| 102 | progress_simple_init(); |
| 103 | } else { |
| 104 | progress_dummy_init(); |
| 105 | } |
Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | void qemu_progress_end(void) |
| 109 | { |
Jes Sorensen | a55c73b | 2011-04-27 14:31:50 +0200 | [diff] [blame^] | 110 | state.end(); |
Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | void qemu_progress_print(float percent, int max) |
| 114 | { |
| 115 | float current; |
| 116 | |
| 117 | if (max == 0) { |
| 118 | current = percent; |
| 119 | } else { |
| 120 | current = state.current + percent / 100 * max; |
| 121 | } |
| 122 | if (current > 100) { |
| 123 | current = 100; |
| 124 | } |
| 125 | state.current = current; |
| 126 | |
| 127 | if (current > (state.last_print + state.min_skip) || |
| 128 | (current == 100) || (current == 0)) { |
| 129 | state.last_print = state.current; |
Jes Sorensen | a55c73b | 2011-04-27 14:31:50 +0200 | [diff] [blame^] | 130 | state.print(); |
Jes Sorensen | 6b837bc | 2011-03-30 14:16:25 +0200 | [diff] [blame] | 131 | } |
| 132 | } |