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Rewrote timer code.

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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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7
src/keyboard_amstrad.c
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@ -26,6 +26,8 @@ struct
uint8_t key_waiting;
uint8_t pa;
uint8_t pb;
pc_timer_t send_delay_timer;
} keyboard_amstrad;
static uint8_t key_queue[16];
@ -35,7 +37,7 @@ static uint8_t amstrad_systemstat_1, amstrad_systemstat_2;
void keyboard_amstrad_poll()
{
keybsenddelay += (1000 * TIMER_USEC);
timer_advance_u64(&keyboard_amstrad.send_delay_timer, (1000 * TIMER_USEC));
if (keyboard_amstrad.wantirq)
{
keyboard_amstrad.wantirq = 0;
@ -77,7 +79,6 @@ void keyboard_amstrad_write(uint16_t port, uint8_t val, void *priv)
ppi.pb = val;
timer_process();
timer_update_outstanding();
speaker_update();
speaker_gated = val & 1;
@ -174,5 +175,5 @@ void keyboard_amstrad_init()
keyboard_send = keyboard_amstrad_adddata;
keyboard_poll = keyboard_amstrad_poll;
timer_add(keyboard_amstrad_poll, &keybsenddelay, TIMER_ALWAYS_ENABLED, NULL);
timer_add(&keyboard_amstrad.send_delay_timer, keyboard_amstrad_poll, NULL, 1);
}