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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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11
src/keyboard_xt.c
View file

@ -36,6 +36,8 @@ struct
int tandy;
int pb2_turbo;
pc_timer_t send_delay_timer;
} keyboard_xt;
static uint8_t key_queue[16];
@ -43,7 +45,7 @@ static int key_queue_start = 0, key_queue_end = 0;
void keyboard_xt_poll()
{
keybsenddelay += (1000 * TIMER_USEC);
timer_advance_u64(&keyboard_xt.send_delay_timer, (1000 * TIMER_USEC));
if (!(keyboard_xt.pb & 0x40) && romset != ROM_TANDY)
return;
if (keyboard_xt.wantirq)
@ -124,8 +126,7 @@ void keyboard_xt_write(uint16_t port, uint8_t val, void *priv)
ppi.pb = val;
timer_process();
timer_update_outstanding();
if (keyboard_xt.pb2_turbo)
cpu_set_turbo((val & 4) ? 0 : 1);
@ -236,7 +237,7 @@ void keyboard_xt_init()
keyboard_xt.tandy = 0;
keyboard_xt.pb2_turbo = (romset == ROM_GENXT || romset == ROM_DTKXT || romset == ROM_AMIXT || romset == ROM_PXXT) ? 1 : 0;
timer_add(keyboard_xt_poll, &keybsenddelay, TIMER_ALWAYS_ENABLED, NULL);
timer_add(&keyboard_xt.send_delay_timer, keyboard_xt_poll, NULL, 1);
}
void keyboard_tandy_init()
@ -248,5 +249,5 @@ void keyboard_tandy_init()
keyboard_poll = keyboard_xt_poll;
keyboard_xt.tandy = (romset != ROM_TANDY) ? 1 : 0;
timer_add(keyboard_xt_poll, &keybsenddelay, TIMER_ALWAYS_ENABLED, NULL);
timer_add(&keyboard_xt.send_delay_timer, keyboard_xt_poll, NULL, 1);
}