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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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18
src/disc.c
View file

@ -9,7 +9,7 @@
#include "timer.h"
int disc_drivesel = 0;
int disc_poll_time = 16;
pc_timer_t disc_poll_timer;
int disc_track[2];
int writeprot[2], fwriteprot[2];
@ -22,9 +22,6 @@ int curdrive = 0;
//char discfns[2][260] = {"", ""};
int defaultwriteprot = 0;
int fdc_time;
int disc_time;
int fdc_ready;
int drive_empty[2] = {1, 1};
@ -137,7 +134,7 @@ int disc_hole(int drive)
void disc_poll()
{
disc_poll_time += disc_period * TIMER_USEC;
timer_advance_u64(&disc_poll_timer, disc_period * TIMER_USEC);
if (disc_drivesel < 2 && drives[disc_drivesel].poll)
drives[disc_drivesel].poll();
@ -209,7 +206,7 @@ void disc_reset()
curdrive = 0;
disc_period = 32;
timer_add(disc_poll, &disc_poll_time, &motoron, NULL);
timer_add(&disc_poll_timer, disc_poll, NULL, 0);
for (drive = 0; drive < 2; drive++)
{
@ -295,3 +292,12 @@ void disc_set_drivesel(int drive)
disc_drivesel = drive;
}
void disc_set_motor_enable(int motor_enable)
{
if (motor_enable && !motoron)
timer_set_delay_u64(&disc_poll_timer, disc_period * TIMER_USEC);
else if (!motor_enable)
timer_disable(&disc_poll_timer);
motoron = motor_enable;
}