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timers: Createt TimersState and put all timers state there

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Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Juan Quintela 2009-09-10 03:04:27 +02:00 committed by Anthony Liguori
parent 6ee093c907
commit 6f68e33e77
1 changed files with 39 additions and 31 deletions
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70
vl.c
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@ -186,7 +186,6 @@ enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
static DisplayState *display_state;
DisplayType display_type = DT_DEFAULT;
const char* keyboard_layout = NULL;
static int64_t ticks_per_sec;
ram_addr_t ram_size;
int nb_nics;
NICInfo nd_table[MAX_NICS];
@ -609,10 +608,15 @@ static int64_t cpu_get_icount(void)
/***********************************************************/
/* guest cycle counter */
static int64_t cpu_ticks_prev;
static int64_t cpu_ticks_offset;
static int64_t cpu_clock_offset;
static int cpu_ticks_enabled;
typedef struct TimersState {
int64_t cpu_ticks_prev;
int64_t cpu_ticks_offset;
int64_t cpu_clock_offset;
int32_t cpu_ticks_enabled;
int64_t ticks_per_sec;
} TimersState;
TimersState timers_state;
/* return the host CPU cycle counter and handle stop/restart */
int64_t cpu_get_ticks(void)
@ -620,18 +624,18 @@ int64_t cpu_get_ticks(void)
if (use_icount) {
return cpu_get_icount();
}
if (!cpu_ticks_enabled) {
return cpu_ticks_offset;
if (!timers_state.cpu_ticks_enabled) {
return timers_state.cpu_ticks_offset;
} else {
int64_t ticks;
ticks = cpu_get_real_ticks();
if (cpu_ticks_prev > ticks) {
if (timers_state.cpu_ticks_prev > ticks) {
/* Note: non increasing ticks may happen if the host uses
software suspend */
cpu_ticks_offset += cpu_ticks_prev - ticks;
timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks;
}
cpu_ticks_prev = ticks;
return ticks + cpu_ticks_offset;
timers_state.cpu_ticks_prev = ticks;
return ticks + timers_state.cpu_ticks_offset;
}
}
@ -639,21 +643,21 @@ int64_t cpu_get_ticks(void)
static int64_t cpu_get_clock(void)
{
int64_t ti;
if (!cpu_ticks_enabled) {
return cpu_clock_offset;
if (!timers_state.cpu_ticks_enabled) {
return timers_state.cpu_clock_offset;
} else {
ti = get_clock();
return ti + cpu_clock_offset;
return ti + timers_state.cpu_clock_offset;
}
}
/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
if (!cpu_ticks_enabled) {
cpu_ticks_offset -= cpu_get_real_ticks();
cpu_clock_offset -= get_clock();
cpu_ticks_enabled = 1;
if (!timers_state.cpu_ticks_enabled) {
timers_state.cpu_ticks_offset -= cpu_get_real_ticks();
timers_state.cpu_clock_offset -= get_clock();
timers_state.cpu_ticks_enabled = 1;
}
}
@ -661,10 +665,10 @@ void cpu_enable_ticks(void)
cpu_get_ticks() after that. */
void cpu_disable_ticks(void)
{
if (cpu_ticks_enabled) {
cpu_ticks_offset = cpu_get_ticks();
cpu_clock_offset = cpu_get_clock();
cpu_ticks_enabled = 0;
if (timers_state.cpu_ticks_enabled) {
timers_state.cpu_ticks_offset = cpu_get_ticks();
timers_state.cpu_clock_offset = cpu_get_clock();
timers_state.cpu_ticks_enabled = 0;
}
}
@ -1034,13 +1038,13 @@ int64_t qemu_get_clock(QEMUClock *clock)
int64_t get_ticks_per_sec(void)
{
return ticks_per_sec;
return timers_state.ticks_per_sec;
}
static void init_timers(void)
{
init_get_clock();
ticks_per_sec = QEMU_TIMER_BASE;
timers_state.ticks_per_sec = QEMU_TIMER_BASE;
rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
}
@ -1072,19 +1076,23 @@ void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
static void timer_save(QEMUFile *f, void *opaque)
{
qemu_put_be64(f, cpu_ticks_offset);
qemu_put_be64(f, ticks_per_sec);
qemu_put_be64(f, cpu_clock_offset);
struct TimersState *s = opaque;
qemu_put_be64(f, s->cpu_ticks_offset);
qemu_put_be64(f, s->ticks_per_sec);
qemu_put_be64(f, s->cpu_clock_offset);
}
static int timer_load(QEMUFile *f, void *opaque, int version_id)
{
struct TimersState *s = opaque;
if (version_id != 1 && version_id != 2)
return -EINVAL;
cpu_ticks_offset=qemu_get_be64(f);
ticks_per_sec=qemu_get_be64(f);
s->cpu_ticks_offset = qemu_get_be64(f);
s->ticks_per_sec = qemu_get_be64(f);
if (version_id == 2) {
cpu_clock_offset=qemu_get_be64(f);
s->cpu_clock_offset = qemu_get_be64(f);
}
return 0;
}
@ -5618,7 +5626,7 @@ int main(int argc, char **argv, char **envp)
if (qemu_opts_foreach(&qemu_drive_opts, drive_init_func, machine, 1) != 0)
exit(1);
register_savevm("timer", 0, 2, timer_save, timer_load, NULL);
register_savevm("timer", 0, 2, timer_save, timer_load, &timers_state);
register_savevm_live("ram", 0, 3, ram_save_live, NULL, ram_load, NULL);
/* Maintain compatibility with multiple stdio monitors */