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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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14
src/vid_incolor.c
View file

@ -148,8 +148,8 @@ typedef struct incolor_t
uint8_t ctrl, ctrl2, stat;
int dispontime, dispofftime;
int vidtime;
uint64_t dispontime, dispofftime;
pc_timer_t timer;
int firstline, lastline;
@ -358,8 +358,8 @@ void incolor_recalctimings(incolor_t *incolor)
_dispofftime = disptime - _dispontime;
_dispontime *= MDACONST;
_dispofftime *= MDACONST;
incolor->dispontime = (int)(_dispontime * (1 << TIMER_SHIFT));
incolor->dispofftime = (int)(_dispofftime * (1 << TIMER_SHIFT));
incolor->dispontime = (uint64_t)_dispontime;
incolor->dispofftime = (uint64_t)_dispofftime;
}
@ -851,7 +851,7 @@ void incolor_poll(void *p)
if (!incolor->linepos)
{
// pclog("InColor poll %i %i\n", incolor->vc, incolor->sc);
incolor->vidtime += incolor->dispofftime;
timer_advance_u64(&incolor->timer, incolor->dispofftime);
incolor->stat |= 1;
incolor->linepos = 1;
oldsc = incolor->sc;
@ -886,7 +886,7 @@ void incolor_poll(void *p)
}
else
{
incolor->vidtime += incolor->dispontime;
timer_advance_u64(&incolor->timer, incolor->dispontime);
if (incolor->dispon)
incolor->stat &= ~1;
incolor->linepos = 0;
@ -1006,7 +1006,7 @@ void *incolor_init()
incolor->vram = malloc(0x40000); /* 4 planes of 64k */
timer_add(incolor_poll, &incolor->vidtime, TIMER_ALWAYS_ENABLED, incolor);
timer_add(&incolor->timer, incolor_poll, incolor, 1);
mem_mapping_add(&incolor->mapping, 0xb0000, 0x08000, incolor_read, NULL, NULL, incolor_write, NULL, NULL, NULL, MEM_MAPPING_EXTERNAL, incolor);
io_sethandler(0x03b0, 0x0010, incolor_in, NULL, NULL, incolor_out, NULL, NULL, incolor);