mirror of https://gitee.com/openkylin/qemu.git
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
|
|
* QEMU progress printing utility functions
|
|
*
|
|
* Copyright (C) 2011 Jes Sorensen <Jes.Sorensen@redhat.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu-common.h"
|
|
#include "osdep.h"
|
|
#include "sysemu.h"
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
|
|
struct progress_state {
|
|
float current;
|
|
float last_print;
|
|
float min_skip;
|
|
void (*print)(void);
|
|
void (*end)(void);
|
|
};
|
|
|
|
static struct progress_state state;
|
|
static volatile sig_atomic_t print_pending;
|
|
|
|
/*
|
|
* Simple progress print function.
|
|
* @percent relative percent of current operation
|
|
* @max percent of total operation
|
|
*/
|
|
static void progress_simple_print(void)
|
|
{
|
|
printf(" (%3.2f/100%%)\r", state.current);
|
|
fflush(stdout);
|
|
}
|
|
|
|
static void progress_simple_end(void)
|
|
{
|
|
printf("\n");
|
|
}
|
|
|
|
static void progress_simple_init(void)
|
|
{
|
|
state.print = progress_simple_print;
|
|
state.end = progress_simple_end;
|
|
}
|
|
|
|
#ifdef CONFIG_POSIX
|
|
static void sigusr_print(int signal)
|
|
{
|
|
print_pending = 1;
|
|
}
|
|
#endif
|
|
|
|
static void progress_dummy_print(void)
|
|
{
|
|
if (print_pending) {
|
|
fprintf(stderr, " (%3.2f/100%%)\n", state.current);
|
|
print_pending = 0;
|
|
}
|
|
}
|
|
|
|
static void progress_dummy_end(void)
|
|
{
|
|
}
|
|
|
|
static void progress_dummy_init(void)
|
|
{
|
|
#ifdef CONFIG_POSIX
|
|
struct sigaction action;
|
|
|
|
memset(&action, 0, sizeof(action));
|
|
sigfillset(&action.sa_mask);
|
|
action.sa_handler = sigusr_print;
|
|
action.sa_flags = 0;
|
|
sigaction(SIGUSR1, &action, NULL);
|
|
#endif
|
|
|
|
state.print = progress_dummy_print;
|
|
state.end = progress_dummy_end;
|
|
}
|
|
|
|
void qemu_progress_init(int enabled, float min_skip)
|
|
{
|
|
state.min_skip = min_skip;
|
|
if (enabled) {
|
|
progress_simple_init();
|
|
} else {
|
|
progress_dummy_init();
|
|
}
|
|
}
|
|
|
|
void qemu_progress_end(void)
|
|
{
|
|
state.end();
|
|
}
|
|
|
|
void qemu_progress_print(float percent, int max)
|
|
{
|
|
float current;
|
|
|
|
if (max == 0) {
|
|
current = percent;
|
|
} else {
|
|
current = state.current + percent / 100 * max;
|
|
}
|
|
if (current > 100) {
|
|
current = 100;
|
|
}
|
|
state.current = current;
|
|
|
|
if (current > (state.last_print + state.min_skip) ||
|
|
(current == 100) || (current == 0)) {
|
|
state.last_print = state.current;
|
|
state.print();
|
|
}
|
|
}
|