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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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9
src/sound.c
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@ -114,7 +114,8 @@ static struct
static int sound_handlers_num;
static int sound_poll_time = 0, sound_poll_latch;
static pc_timer_t sound_poll_timer;
static uint64_t sound_poll_latch;
int sound_pos_global = 0;
int soundon = 1;
@ -226,7 +227,7 @@ void sound_add_handler(void (*get_buffer)(int32_t *buffer, int len, void *p), vo
static int cd_pos = 0;
void sound_poll(void *priv)
{
sound_poll_time += sound_poll_latch;
timer_advance_u64(&sound_poll_timer, sound_poll_latch);
cd_pos++;
if (cd_pos == (CD_BUFLEN * 48000) / CD_FREQ)
@ -269,12 +270,12 @@ void sound_poll(void *priv)
void sound_speed_changed()
{
sound_poll_latch = (int)((double)TIMER_USEC * (1000000.0 / 48000.0));
sound_poll_latch = (uint64_t)((double)TIMER_USEC * (1000000.0 / 48000.0));
}
void sound_reset()
{
timer_add(sound_poll, &sound_poll_time, TIMER_ALWAYS_ENABLED, NULL);
timer_add(&sound_poll_timer, sound_poll, NULL, 1);
sound_handlers_num = 0;