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Rewrote timer code.

Browse source 
The new code is based on timestamps, rather than delays. This eliminates the
need to update every timer in timer_process(), which cost a non-trivial amount
of CPU time on low-end machines.

This involved changes to every user of the timer code, so this change almost
certainly introduces bugs.
This commit is contained in:
SarahW 2018-08-02 22:06:10 +01:00
commit a7d006b637
79 changed files with 1050 additions and 1033 deletions
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15
src/keyboard_at.c
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@ -48,10 +48,12 @@ struct
void (*mouse_write)(uint8_t val, void *p);
void *mouse_p;
int refresh_time;
pc_timer_t refresh_timer;
int refresh;
int is_ps2;
pc_timer_t send_delay_timer;
} keyboard_at;
static uint8_t key_ctrl_queue[16];
@ -65,7 +67,7 @@ int mouse_queue_start = 0, mouse_queue_end = 0;
void keyboard_at_poll()
{
keybsenddelay += (100 * TIMER_USEC);
timer_advance_u64(&keyboard_at.send_delay_timer, (100 * TIMER_USEC));
if (keyboard_at.out_new != -1 && !keyboard_at.last_irq)
{
@ -336,9 +338,6 @@ void keyboard_at_write(uint16_t port, uint8_t val, void *priv)
case 0x61:
ppi.pb = val;
timer_process();
timer_update_outstanding();
speaker_update();
speaker_gated = val & 1;
speaker_enable = val & 2;
@ -626,7 +625,7 @@ void keyboard_at_reset()
static void at_refresh(void *p)
{
keyboard_at.refresh = !keyboard_at.refresh;
keyboard_at.refresh_time += PS2_REFRESH_TIME;
timer_advance_u64(&keyboard_at.refresh_timer, PS2_REFRESH_TIME);
}
void keyboard_at_init()
@ -641,7 +640,7 @@ void keyboard_at_init()
keyboard_at.mouse_p = NULL;
keyboard_at.is_ps2 = 0;
timer_add(keyboard_at_poll, &keybsenddelay, TIMER_ALWAYS_ENABLED, NULL);
timer_add(&keyboard_at.send_delay_timer, keyboard_at_poll, NULL, 1);
}
void keyboard_at_set_mouse(void (*mouse_write)(uint8_t val, void *p), void *p)
@ -652,6 +651,6 @@ void keyboard_at_set_mouse(void (*mouse_write)(uint8_t val, void *p), void *p)
void keyboard_at_init_ps2()
{
timer_add(at_refresh, &keyboard_at.refresh_time, TIMER_ALWAYS_ENABLED, NULL);
timer_add(&keyboard_at.refresh_timer, at_refresh, NULL, 1);
keyboard_at.is_ps2 = 1;
}