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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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13
src/sound_adlibgold.c
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@ -36,7 +36,7 @@ typedef struct adgold_t
int16_t adgold_mma_out[2];
int adgold_mma_intpos[2];
int adgold_mma_timer_count;
pc_timer_t adgold_mma_timer;
struct
{
@ -586,9 +586,10 @@ void adgold_timer_poll(void *p)
{
adgold_t *adgold = (adgold_t *)p;
while (adgold->adgold_mma_timer_count <= 0)
{
adgold->adgold_mma_timer_count += (int)((double)TIMER_USEC * 1.88964);
timer_advance_u64(&adgold->adgold_mma_timer, (uint64_t)((double)TIMER_USEC * 1.88964));
// while (adgold->adgold_mma_timer_count <= 0)
// {
// adgold->adgold_mma_timer_count += (int)((double)TIMER_USEC * 1.88964);
if (adgold->adgold_mma_regs[0][8] & 0x01) /*Timer 0*/
{
adgold->adgold_mma.timer0_count--;
@ -649,7 +650,7 @@ void adgold_timer_poll(void *p)
adgold_mma_poll(adgold, 1);
}
}
}
// }
}
static void adgold_get_buffer(int32_t *buffer, int len, void *p)
@ -817,7 +818,7 @@ void *adgold_init()
/*388/389 are handled by adlib_init*/
io_sethandler(0x0388, 0x0008, adgold_read, NULL, NULL, adgold_write, NULL, NULL, adgold);
timer_add(adgold_timer_poll, &adgold->adgold_mma_timer_count, TIMER_ALWAYS_ENABLED, adgold);
timer_add(&adgold->adgold_mma_timer, adgold_timer_poll, adgold, 1);
sound_add_handler(adgold_get_buffer, adgold);