| 687 |
|
static void *xpram_func(void *arg) |
| 688 |
|
{ |
| 689 |
|
while (!xpram_thread_cancel) { |
| 690 |
< |
for (int i=0; i<60 && !xpram_thread_cancel; i++) { |
| 691 |
< |
#ifdef HAVE_NANOSLEEP |
| 692 |
< |
struct timespec req = {1, 0}; |
| 693 |
< |
nanosleep(&req, NULL); |
| 694 |
< |
#else |
| 695 |
< |
usleep(1000000); |
| 696 |
< |
#endif |
| 697 |
< |
} |
| 690 |
> |
for (int i=0; i<60 && !xpram_thread_cancel; i++) |
| 691 |
> |
Delay_usec(1000000); |
| 692 |
|
xpram_watchdog(); |
| 693 |
|
} |
| 694 |
|
return NULL; |
| 740 |
|
#ifdef HAVE_PTHREADS |
| 741 |
|
static void *tick_func(void *arg) |
| 742 |
|
{ |
| 743 |
+ |
uint64 next = GetTicks_usec(); |
| 744 |
|
while (!tick_thread_cancel) { |
| 750 |
– |
|
| 751 |
– |
// Wait |
| 752 |
– |
#ifdef HAVE_NANOSLEEP |
| 753 |
– |
struct timespec req = {0, 16625000}; |
| 754 |
– |
nanosleep(&req, NULL); |
| 755 |
– |
#else |
| 756 |
– |
usleep(16625); |
| 757 |
– |
#endif |
| 758 |
– |
|
| 759 |
– |
// Action |
| 745 |
|
one_tick(); |
| 746 |
+ |
next += 16625; |
| 747 |
+ |
int64 delay = next - GetTicks_usec(); |
| 748 |
+ |
if (delay > 0) |
| 749 |
+ |
Delay_usec(delay); |
| 750 |
+ |
else if (delay < -16625) |
| 751 |
+ |
next = GetTicks_usec(); |
| 752 |
|
} |
| 753 |
|
return NULL; |
| 754 |
|
} |
| 755 |
|
#endif |
| 756 |
|
|
| 757 |
|
|
| 758 |
+ |
/* |
| 759 |
+ |
* Get current value of microsecond timer |
| 760 |
+ |
*/ |
| 761 |
+ |
|
| 762 |
+ |
uint64 GetTicks_usec(void) |
| 763 |
+ |
{ |
| 764 |
+ |
#ifdef HAVE_CLOCK_GETTIME |
| 765 |
+ |
struct timespec t; |
| 766 |
+ |
clock_gettime(CLOCK_REALTIME, &t); |
| 767 |
+ |
return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000; |
| 768 |
+ |
#else |
| 769 |
+ |
struct timeval t; |
| 770 |
+ |
gettimeofday(&t, NULL); |
| 771 |
+ |
return (uint64)t.tv_sec * 1000000 + t.tv_usec; |
| 772 |
+ |
#endif |
| 773 |
+ |
} |
| 774 |
+ |
|
| 775 |
+ |
|
| 776 |
+ |
/* |
| 777 |
+ |
* Delay by specified number of microseconds (<1 second) |
| 778 |
+ |
* (adapted from SDL_Delay() source) |
| 779 |
+ |
*/ |
| 780 |
+ |
|
| 781 |
+ |
void Delay_usec(uint32 usec) |
| 782 |
+ |
{ |
| 783 |
+ |
int was_error; |
| 784 |
+ |
#ifndef __linux__ // Non-Linux implementations need to calculate time left |
| 785 |
+ |
uint64 then, now, elapsed; |
| 786 |
+ |
#endif |
| 787 |
+ |
struct timeval tv; |
| 788 |
+ |
|
| 789 |
+ |
// Set the timeout interval - Linux only needs to do this once |
| 790 |
+ |
#ifdef __linux__ |
| 791 |
+ |
tv.tv_sec = 0; |
| 792 |
+ |
tv.tv_usec = usec; |
| 793 |
+ |
#else |
| 794 |
+ |
then = GetTicks_usec(); |
| 795 |
+ |
#endif |
| 796 |
+ |
do { |
| 797 |
+ |
errno = 0; |
| 798 |
+ |
#ifndef __linux__ |
| 799 |
+ |
/* Calculate the time interval left (in case of interrupt) */ |
| 800 |
+ |
now = GetTicks_usec(); |
| 801 |
+ |
elapsed = now - then; |
| 802 |
+ |
then = now; |
| 803 |
+ |
if (elapsed >= usec) |
| 804 |
+ |
break; |
| 805 |
+ |
usec -= elapsed; |
| 806 |
+ |
tv.tv_sec = 0; |
| 807 |
+ |
tv.tv_usec = usec; |
| 808 |
+ |
#endif |
| 809 |
+ |
was_error = select(0, NULL, NULL, NULL, &tv); |
| 810 |
+ |
} while (was_error && (errno == EINTR)); |
| 811 |
+ |
} |
| 812 |
+ |
|
| 813 |
+ |
|
| 814 |
|
#if !EMULATED_68K |
| 815 |
|
/* |
| 816 |
|
* Virtual 68k interrupt handler |
