BII: High-precision timer backported from SS
This commit is contained in:
kanjitalk755
parent
ef3f61c30d
commit
1199f8115e
|
|
@ -498,4 +498,13 @@ static inline uae_u32 do_byteswap_16(uae_u32 v)
|
|||
#define ALWAYS_INLINE inline __attribute__((always_inline))
|
||||
#define memptr uint32
|
||||
|
||||
// High-precision timing
|
||||
#if defined(HAVE_PTHREADS) && defined(HAVE_CLOCK_NANOSLEEP)
|
||||
#define PRECISE_TIMING 1
|
||||
#define PRECISE_TIMING_POSIX 1
|
||||
#elif defined(HAVE_PTHREADS) && defined(__MACH__)
|
||||
#define PRECISE_TIMING 1
|
||||
#define PRECISE_TIMING_MACH 1
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -462,7 +462,9 @@ void EmulOp(uint16 opcode, M68kRegisters *r)
|
|||
if (HasMacStarted()) {
|
||||
|
||||
// Mac has started, execute all 60Hz interrupt functions
|
||||
#if !PRECISE_TIMING
|
||||
TimerInterrupt();
|
||||
#endif
|
||||
VideoInterrupt();
|
||||
|
||||
// Call DoVBLTask(0)
|
||||
|
|
@ -494,7 +496,12 @@ void EmulOp(uint16 opcode, M68kRegisters *r)
|
|||
ClearInterruptFlag(INTFLAG_ETHER);
|
||||
EtherInterrupt();
|
||||
}
|
||||
|
||||
#if PRECISE_TIMING
|
||||
if (InterruptFlags & INTFLAG_TIMER) {
|
||||
ClearInterruptFlag(INTFLAG_TIMER);
|
||||
TimerInterrupt();
|
||||
}
|
||||
#endif
|
||||
if (InterruptFlags & INTFLAG_AUDIO) {
|
||||
ClearInterruptFlag(INTFLAG_AUDIO);
|
||||
AudioInterrupt();
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
/*
|
||||
* timer.cpp - Time Manager emulation
|
||||
*
|
||||
* Basilisk II (C) 1997-2008 Christian Bauer
|
||||
* Basilisk II (C) 1997-2008 Christian Bauer and Marc Hellwig
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
|
|
@ -18,26 +18,26 @@
|
|||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
/*
|
||||
* SEE ALSO
|
||||
* Inside Macintosh: Processes, chapter 3 "Time Manager"
|
||||
* Technote 1063: "Inside Macintosh: Processes: Time Manager Addenda"
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
#include "sysdeps.h"
|
||||
#include "cpu_emulation.h"
|
||||
#include "main.h"
|
||||
#include "macos_util.h"
|
||||
#include "timer.h"
|
||||
#include "macos_util.h"
|
||||
#include "main.h"
|
||||
#include "cpu_emulation.h"
|
||||
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
#include <pthread.h>
|
||||
#include <semaphore.h>
|
||||
#endif
|
||||
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
#include <mach/mach.h>
|
||||
#endif
|
||||
|
||||
#define DEBUG 0
|
||||
#include "debug.h"
|
||||
|
||||
|
||||
// Set this to 1 to enable TMQueue management (doesn't work)
|
||||
#define TM_QUEUE 0
|
||||
#define TM_QUEUE 0 // Enable TMQueue management (doesn't work)
|
||||
|
||||
|
||||
// Definitions for Time Manager
|
||||
|
|
@ -53,50 +53,70 @@ enum { // TMTask struct
|
|||
struct TMDesc {
|
||||
uint32 task; // Mac address of associated TMTask
|
||||
tm_time_t wakeup; // Time this task is scheduled for execution
|
||||
bool in_use; // Flag: descriptor in use
|
||||
TMDesc *next;
|
||||
};
|
||||
|
||||
const int NUM_DESCS = 64; // Maximum number of descriptors
|
||||
static TMDesc desc[NUM_DESCS];
|
||||
static TMDesc *tmDescList;
|
||||
|
||||
#if PRECISE_TIMING
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
static thread_id timer_thread = -1;
|
||||
static bool thread_active = true;
|
||||
static const tm_time_t wakeup_time_max = 0x7fffffffffffffff;
|
||||
static volatile tm_time_t wakeup_time = wakeup_time_max;
|
||||
static sem_id wakeup_time_sem = -1;
|
||||
static int32 timer_func(void *arg);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
static pthread_t timer_thread;
|
||||
static bool timer_thread_active = false;
|
||||
static volatile bool timer_thread_cancel = false;
|
||||
static tm_time_t wakeup_time_max = { 0x7fffffff, 999999999 };
|
||||
static tm_time_t wakeup_time = wakeup_time_max;
|
||||
static pthread_mutex_t wakeup_time_lock = PTHREAD_MUTEX_INITIALIZER;
|
||||
static void *timer_func(void *arg);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
static clock_serv_t system_clock;
|
||||
static thread_act_t timer_thread;
|
||||
static bool timer_thread_active = false;
|
||||
static tm_time_t wakeup_time_max = { 0x7fffffff, 999999999 };
|
||||
static tm_time_t wakeup_time = wakeup_time_max;
|
||||
static semaphore_t wakeup_time_sem;
|
||||
static void *timer_func(void *arg);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Allocate descriptor for given TMTask in list
|
||||
*/
|
||||
|
||||
static int alloc_desc(uint32 tm)
|
||||
inline static void free_desc(TMDesc *desc)
|
||||
{
|
||||
// Search for first free descriptor
|
||||
for (int i=0; i<NUM_DESCS; i++)
|
||||
if (!desc[i].in_use) {
|
||||
desc[i].task = tm;
|
||||
desc[i].in_use = true;
|
||||
return i;
|
||||
if (desc == tmDescList) {
|
||||
tmDescList = desc->next;
|
||||
} else {
|
||||
for (TMDesc *d = tmDescList; d; d = d->next) {
|
||||
if (d->next == desc) {
|
||||
d->next = desc->next;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
delete desc;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Free descriptor in list
|
||||
*/
|
||||
|
||||
inline static void free_desc(int i)
|
||||
{
|
||||
desc[i].in_use = false;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Find descriptor associated with given TMTask
|
||||
*/
|
||||
|
||||
inline static int find_desc(uint32 tm)
|
||||
inline static TMDesc *find_desc(uint32 tm)
|
||||
{
|
||||
for (int i=0; i<NUM_DESCS; i++)
|
||||
if (desc[i].in_use && desc[i].task == tm)
|
||||
return i;
|
||||
return -1;
|
||||
TMDesc *desc = tmDescList;
|
||||
while (desc) {
|
||||
if (desc->task == tm) {
|
||||
return desc;
|
||||
}
|
||||
desc = desc->next;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -133,15 +153,135 @@ static void dequeue_tm(uint32 tm)
|
|||
}
|
||||
|
||||
|
||||
/*
|
||||
* Timer thread operations
|
||||
*/
|
||||
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
const int SIGSUSPEND = SIGRTMIN + 6;
|
||||
const int SIGRESUME = SIGRTMIN + 7;
|
||||
static struct sigaction sigsuspend_action;
|
||||
static struct sigaction sigresume_action;
|
||||
|
||||
static int suspend_count = 0;
|
||||
static pthread_mutex_t suspend_count_lock = PTHREAD_MUTEX_INITIALIZER;
|
||||
static sem_t suspend_ack_sem;
|
||||
static sigset_t suspend_handler_mask;
|
||||
|
||||
// Signal handler for suspended thread
|
||||
static void sigsuspend_handler(int sig)
|
||||
{
|
||||
sem_post(&suspend_ack_sem);
|
||||
sigsuspend(&suspend_handler_mask);
|
||||
}
|
||||
|
||||
// Signal handler for resumed thread
|
||||
static void sigresume_handler(int sig)
|
||||
{
|
||||
/* simply trigger a signal to stop clock_nanosleep() */
|
||||
}
|
||||
|
||||
// Initialize timer thread
|
||||
static bool timer_thread_init(void)
|
||||
{
|
||||
// Install suspend signal handler
|
||||
sigemptyset(&sigsuspend_action.sa_mask);
|
||||
sigaddset(&sigsuspend_action.sa_mask, SIGRESUME);
|
||||
sigsuspend_action.sa_handler = sigsuspend_handler;
|
||||
sigsuspend_action.sa_flags = SA_RESTART;
|
||||
#ifdef HAVE_SIGNAL_SA_RESTORER
|
||||
sigsuspend_action.sa_restorer = NULL;
|
||||
#endif
|
||||
if (sigaction(SIGSUSPEND, &sigsuspend_action, NULL) < 0)
|
||||
return false;
|
||||
|
||||
// Install resume signal handler
|
||||
sigemptyset(&sigresume_action.sa_mask);
|
||||
sigresume_action.sa_handler = sigresume_handler;
|
||||
sigresume_action.sa_flags = SA_RESTART;
|
||||
#ifdef HAVE_SIGNAL_SA_RESTORER
|
||||
sigresume_action.sa_restorer = NULL;
|
||||
#endif
|
||||
if (sigaction(SIGRESUME, &sigresume_action, NULL) < 0)
|
||||
return false;
|
||||
|
||||
// Initialize semaphore
|
||||
if (sem_init(&suspend_ack_sem, 0, 0) < 0)
|
||||
return false;
|
||||
|
||||
// Initialize suspend_handler_mask, it excludes SIGRESUME
|
||||
if (sigfillset(&suspend_handler_mask) != 0)
|
||||
return false;
|
||||
if (sigdelset(&suspend_handler_mask, SIGRESUME) != 0)
|
||||
return false;
|
||||
|
||||
// Create thread in running state
|
||||
suspend_count = 0;
|
||||
return (pthread_create(&timer_thread, NULL, timer_func, NULL) == 0);
|
||||
}
|
||||
|
||||
// Kill timer thread
|
||||
static void timer_thread_kill(void)
|
||||
{
|
||||
timer_thread_cancel = true;
|
||||
#ifdef HAVE_PTHREAD_CANCEL
|
||||
pthread_cancel(timer_thread);
|
||||
#endif
|
||||
pthread_join(timer_thread, NULL);
|
||||
}
|
||||
|
||||
// Suspend timer thread
|
||||
static void timer_thread_suspend(void)
|
||||
{
|
||||
pthread_mutex_lock(&suspend_count_lock);
|
||||
if (suspend_count == 0) {
|
||||
suspend_count ++;
|
||||
if (pthread_kill(timer_thread, SIGSUSPEND) == 0)
|
||||
sem_wait(&suspend_ack_sem);
|
||||
}
|
||||
pthread_mutex_unlock(&suspend_count_lock);
|
||||
}
|
||||
|
||||
// Resume timer thread
|
||||
static void timer_thread_resume(void)
|
||||
{
|
||||
pthread_mutex_lock(&suspend_count_lock);
|
||||
assert(suspend_count > 0);
|
||||
if (suspend_count == 1) {
|
||||
suspend_count = 0;
|
||||
pthread_kill(timer_thread, SIGRESUME);
|
||||
}
|
||||
pthread_mutex_unlock(&suspend_count_lock);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Initialize Time Manager
|
||||
*/
|
||||
|
||||
void TimerInit(void)
|
||||
{
|
||||
// Mark all descriptors as inactive
|
||||
for (int i=0; i<NUM_DESCS; i++)
|
||||
free_desc(i);
|
||||
TimerReset();
|
||||
|
||||
#if PRECISE_TIMING
|
||||
// Start timer thread
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
wakeup_time_sem = create_sem(1, "Wakeup Time");
|
||||
timer_thread = spawn_thread(timer_func, "Time Manager", B_REAL_TIME_PRIORITY, NULL);
|
||||
resume_thread(timer_thread);
|
||||
#elif PRECISE_TIMING_MACH
|
||||
pthread_t pthread;
|
||||
|
||||
host_get_clock_service(mach_host_self(), REALTIME_CLOCK, &system_clock);
|
||||
semaphore_create(mach_task_self(), &wakeup_time_sem, SYNC_POLICY_FIFO, 1);
|
||||
|
||||
pthread_create(&pthread, NULL, &timer_func, NULL);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
timer_thread_active = timer_thread_init();
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -151,6 +291,26 @@ void TimerInit(void)
|
|||
|
||||
void TimerExit(void)
|
||||
{
|
||||
#if PRECISE_TIMING
|
||||
// Quit timer thread
|
||||
if (timer_thread > 0) {
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
status_t l;
|
||||
thread_active = false;
|
||||
suspend_thread(timer_thread);
|
||||
resume_thread(timer_thread);
|
||||
wait_for_thread(timer_thread, &l);
|
||||
delete_sem(wakeup_time_sem);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
timer_thread_active = false;
|
||||
semaphore_destroy(mach_task_self(), wakeup_time_sem);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
timer_thread_kill();
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -160,9 +320,13 @@ void TimerExit(void)
|
|||
|
||||
void TimerReset(void)
|
||||
{
|
||||
// Mark all descriptors as inactive
|
||||
for (int i=0; i<NUM_DESCS; i++)
|
||||
free_desc(i);
|
||||
TMDesc *desc = tmDescList;
|
||||
while (desc) {
|
||||
TMDesc *next = desc->next;
|
||||
delete desc;
|
||||
desc = next;
|
||||
}
|
||||
tmDescList = NULL;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -174,12 +338,13 @@ int16 InsTime(uint32 tm, uint16 trap)
|
|||
{
|
||||
D(bug("InsTime %08lx, trap %04x\n", tm, trap));
|
||||
WriteMacInt16(tm + qType, (ReadMacInt16(tm + qType) & 0x1fff) | ((trap << 4) & 0x6000));
|
||||
if (find_desc(tm) >= 0)
|
||||
printf("WARNING: InsTime(): Task re-inserted\n");
|
||||
if (find_desc(tm))
|
||||
printf("WARNING: InsTime(%08x): Task re-inserted\n", tm);
|
||||
else {
|
||||
int i = alloc_desc(tm);
|
||||
if (i < 0)
|
||||
printf("FATAL: InsTime(): No free Time Manager descriptor\n");
|
||||
TMDesc *desc = new TMDesc;
|
||||
desc->task = tm;
|
||||
desc->next = tmDescList;
|
||||
tmDescList = desc;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -194,30 +359,68 @@ int16 RmvTime(uint32 tm)
|
|||
D(bug("RmvTime %08lx\n", tm));
|
||||
|
||||
// Find descriptor
|
||||
int i = find_desc(tm);
|
||||
if (i < 0) {
|
||||
TMDesc *desc = find_desc(tm);
|
||||
if (!desc) {
|
||||
printf("WARNING: RmvTime(%08x): Descriptor not found\n", tm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Task active?
|
||||
#if PRECISE_TIMING_BEOS
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
suspend_thread(timer_thread);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
thread_suspend(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
timer_thread_suspend();
|
||||
#endif
|
||||
if (ReadMacInt16(tm + qType) & 0x8000) {
|
||||
|
||||
// Yes, make task inactive and remove it from the Time Manager queue
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) & 0x7fff);
|
||||
dequeue_tm(tm);
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (TMDesc *d = tmDescList; d; d = d->next)
|
||||
if ((ReadMacInt16(d->task + qType) & 0x8000))
|
||||
if (timer_cmp_time(d->wakeup, wakeup_time) < 0)
|
||||
wakeup_time = d->wakeup;
|
||||
#endif
|
||||
|
||||
// Compute remaining time
|
||||
tm_time_t remaining, current;
|
||||
timer_current_time(current);
|
||||
timer_sub_time(remaining, desc[i].wakeup, current);
|
||||
timer_sub_time(remaining, desc->wakeup, current);
|
||||
WriteMacInt32(tm + tmCount, timer_host2mac_time(remaining));
|
||||
} else
|
||||
WriteMacInt32(tm + tmCount, 0);
|
||||
D(bug(" tmCount %d\n", ReadMacInt32(tm + tmCount)));
|
||||
#if PRECISE_TIMING_BEOS
|
||||
release_sem(wakeup_time_sem);
|
||||
thread_info info;
|
||||
do {
|
||||
resume_thread(timer_thread); // This will unblock the thread
|
||||
get_thread_info(timer_thread, &info);
|
||||
} while (info.state == B_THREAD_SUSPENDED); // Sometimes, resume_thread() doesn't work (BeOS bug?)
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
thread_abort(timer_thread);
|
||||
thread_resume(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
timer_thread_resume();
|
||||
assert(suspend_count == 0);
|
||||
#endif
|
||||
|
||||
// Free descriptor
|
||||
free_desc(i);
|
||||
free_desc(desc);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -231,38 +434,41 @@ int16 PrimeTime(uint32 tm, int32 time)
|
|||
D(bug("PrimeTime %08x, time %d\n", tm, time));
|
||||
|
||||
// Find descriptor
|
||||
int i = find_desc(tm);
|
||||
if (i < 0) {
|
||||
printf("FATAL: PrimeTime(): Descriptor not found\n");
|
||||
TMDesc *desc = find_desc(tm);
|
||||
if (!desc) {
|
||||
printf("FATAL: PrimeTime(%08x): Descriptor not found\n", tm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Convert delay time
|
||||
tm_time_t delay;
|
||||
timer_mac2host_time(delay, time);
|
||||
|
||||
// Extended task?
|
||||
if (ReadMacInt16(tm + qType) & 0x4000) {
|
||||
|
||||
// Convert delay time
|
||||
tm_time_t delay;
|
||||
timer_mac2host_time(delay, time);
|
||||
|
||||
// Yes, tmWakeUp set?
|
||||
if (ReadMacInt32(tm + tmWakeUp)) {
|
||||
|
||||
//!! PrimeTime(0) means continue previous delay
|
||||
// (save wakeup time in RmvTime?)
|
||||
if (time == 0)
|
||||
printf("WARNING: Unsupported PrimeTime(0)\n");
|
||||
// PrimeTime(0) can either mean (a) "the task runs as soon as interrupts are enabled"
|
||||
// or (b) "continue previous delay" if an expired task was stopped via RmvTime() and
|
||||
// then re-installed using InsXTime(). Since tmWakeUp was set, this is case (b).
|
||||
// The remaining time was saved in tmCount by RmvTime().
|
||||
if (time == 0) {
|
||||
timer_mac2host_time(delay, ReadMacInt16(tm + tmCount));
|
||||
}
|
||||
|
||||
// Yes, calculate wakeup time relative to last scheduled time
|
||||
tm_time_t wakeup;
|
||||
timer_add_time(wakeup, desc[i].wakeup, delay);
|
||||
desc[i].wakeup = wakeup;
|
||||
timer_add_time(wakeup, desc->wakeup, delay);
|
||||
desc->wakeup = wakeup;
|
||||
|
||||
} else {
|
||||
|
||||
// No, calculate wakeup time relative to current time
|
||||
tm_time_t now;
|
||||
timer_current_time(now);
|
||||
timer_add_time(desc[i].wakeup, now, delay);
|
||||
timer_add_time(desc->wakeup, now, delay);
|
||||
}
|
||||
|
||||
// Set tmWakeUp to indicate that task was scheduled
|
||||
|
|
@ -271,19 +477,130 @@ int16 PrimeTime(uint32 tm, int32 time)
|
|||
} else {
|
||||
|
||||
// Not extended task, calculate wakeup time relative to current time
|
||||
tm_time_t delay;
|
||||
timer_mac2host_time(delay, time);
|
||||
timer_current_time(desc[i].wakeup);
|
||||
timer_add_time(desc[i].wakeup, desc[i].wakeup, delay);
|
||||
tm_time_t now;
|
||||
timer_current_time(now);
|
||||
timer_add_time(desc->wakeup, now, delay);
|
||||
}
|
||||
|
||||
// Make task active and enqueue it in the Time Manager queue
|
||||
#if PRECISE_TIMING_BEOS
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
suspend_thread(timer_thread);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
thread_suspend(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
timer_thread_suspend();
|
||||
#endif
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) | 0x8000);
|
||||
enqueue_tm(tm);
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (TMDesc *d = tmDescList; d; d = d->next)
|
||||
if ((ReadMacInt16(d->task + qType) & 0x8000))
|
||||
if (timer_cmp_time(d->wakeup, wakeup_time) < 0)
|
||||
wakeup_time = d->wakeup;
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
release_sem(wakeup_time_sem);
|
||||
thread_info info;
|
||||
do {
|
||||
resume_thread(timer_thread); // This will unblock the thread
|
||||
get_thread_info(timer_thread, &info);
|
||||
} while (info.state == B_THREAD_SUSPENDED); // Sometimes, resume_thread() doesn't work (BeOS bug?)
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
thread_abort(timer_thread);
|
||||
thread_resume(timer_thread);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
timer_thread_resume();
|
||||
assert(suspend_count == 0);
|
||||
#endif
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Time Manager thread
|
||||
*/
|
||||
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
static int32 timer_func(void *arg)
|
||||
{
|
||||
while (thread_active) {
|
||||
|
||||
// Wait until time specified by wakeup_time
|
||||
snooze_until(wakeup_time, B_SYSTEM_TIMEBASE);
|
||||
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
if (wakeup_time < system_time()) {
|
||||
|
||||
// Timer expired, trigger interrupt
|
||||
wakeup_time = 0x7fffffffffffffff;
|
||||
SetInterruptFlag(INTFLAG_TIMER);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
release_sem(wakeup_time_sem);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
static void *timer_func(void *arg)
|
||||
{
|
||||
timer_thread = mach_thread_self();
|
||||
timer_thread_active = true;
|
||||
|
||||
while (timer_thread_active) {
|
||||
clock_sleep(system_clock, TIME_ABSOLUTE, wakeup_time, NULL);
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
|
||||
tm_time_t system_time;
|
||||
|
||||
timer_current_time(system_time);
|
||||
if (timer_cmp_time(wakeup_time, system_time) < 0) {
|
||||
wakeup_time = wakeup_time_max;
|
||||
SetInterruptFlag(INTFLAG_TIMER);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
static void *timer_func(void *arg)
|
||||
{
|
||||
while (!timer_thread_cancel) {
|
||||
// Wait until time specified by wakeup_time
|
||||
clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &wakeup_time, NULL);
|
||||
|
||||
tm_time_t system_time;
|
||||
timer_current_time(system_time);
|
||||
if (timer_cmp_time(wakeup_time, system_time) < 0) {
|
||||
|
||||
// Timer expired, trigger interrupt
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
wakeup_time = wakeup_time_max;
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
SetInterruptFlag(INTFLAG_TIMER);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Timer interrupt function (executed as part of 60Hz interrupt)
|
||||
*/
|
||||
|
|
@ -293,24 +610,66 @@ void TimerInterrupt(void)
|
|||
// Look for active TMTasks that have expired
|
||||
tm_time_t now;
|
||||
timer_current_time(now);
|
||||
for (int i=0; i<NUM_DESCS; i++)
|
||||
if (desc[i].in_use) {
|
||||
uint32 tm = desc[i].task;
|
||||
if ((ReadMacInt16(tm + qType) & 0x8000) && timer_cmp_time(desc[i].wakeup, now) < 0) {
|
||||
TMDesc *desc = tmDescList;
|
||||
while (desc) {
|
||||
TMDesc *next = desc->next;
|
||||
uint32 tm = desc->task;
|
||||
if ((ReadMacInt16(tm + qType) & 0x8000) && timer_cmp_time(desc->wakeup, now) <= 0) {
|
||||
|
||||
// Found one, mark as inactive and remove it from the Time Manager queue
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) & 0x7fff);
|
||||
dequeue_tm(tm);
|
||||
// Found one, mark as inactive and remove it from the Time Manager queue
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) & 0x7fff);
|
||||
dequeue_tm(tm);
|
||||
|
||||
// Call timer function
|
||||
uint32 addr = ReadMacInt32(tm + tmAddr);
|
||||
if (addr) {
|
||||
D(bug("Calling TimeTask %08lx, addr %08lx\n", tm, addr));
|
||||
M68kRegisters r;
|
||||
r.a[0] = addr;
|
||||
r.a[1] = tm;
|
||||
Execute68k(addr, &r);
|
||||
}
|
||||
// Call timer function
|
||||
uint32 addr = ReadMacInt32(tm + tmAddr);
|
||||
if (addr) {
|
||||
D(bug("Calling TimeTask %08lx, addr %08lx\n", tm, addr));
|
||||
M68kRegisters r;
|
||||
r.a[0] = addr;
|
||||
r.a[1] = tm;
|
||||
Execute68k(r.a[0], &r);
|
||||
D(bug(" returned from TimeTask\n"));
|
||||
}
|
||||
}
|
||||
desc = next;
|
||||
}
|
||||
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
#if PRECISE_TIMING_BEOS
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
suspend_thread(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_MACH
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
thread_suspend(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
timer_thread_suspend();
|
||||
#endif
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (TMDesc *d = tmDescList; d; d = d->next)
|
||||
if ((ReadMacInt16(d->task + qType) & 0x8000))
|
||||
if (timer_cmp_time(d->wakeup, wakeup_time) < 0)
|
||||
wakeup_time = d->wakeup;
|
||||
#if PRECISE_TIMING_BEOS
|
||||
release_sem(wakeup_time_sem);
|
||||
thread_info info;
|
||||
do {
|
||||
resume_thread(timer_thread); // This will unblock the thread
|
||||
get_thread_info(timer_thread, &info);
|
||||
} while (info.state == B_THREAD_SUSPENDED); // Sometimes, resume_thread() doesn't work (BeOS bug?)
|
||||
#endif
|
||||
#if PRECISE_TIMING_MACH
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
thread_abort(timer_thread);
|
||||
thread_resume(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
timer_thread_resume();
|
||||
assert(suspend_count == 0);
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,677 +0,0 @@
|
|||
/*
|
||||
* timer.cpp - Time Manager emulation
|
||||
*
|
||||
* SheepShaver (C) 1997-2008 Christian Bauer and Marc Hellwig
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include "sysdeps.h"
|
||||
#include "timer.h"
|
||||
#include "macos_util.h"
|
||||
#include "main.h"
|
||||
#include "cpu_emulation.h"
|
||||
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
#include <pthread.h>
|
||||
#include <semaphore.h>
|
||||
#endif
|
||||
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
#include <mach/mach.h>
|
||||
#endif
|
||||
|
||||
#define DEBUG 0
|
||||
#include "debug.h"
|
||||
|
||||
|
||||
#define TM_QUEUE 0 // Enable TMQueue management (doesn't work)
|
||||
|
||||
|
||||
// Definitions for Time Manager
|
||||
enum { // TMTask struct
|
||||
tmAddr = 6,
|
||||
tmCount = 10,
|
||||
tmWakeUp = 14,
|
||||
tmReserved = 18
|
||||
};
|
||||
|
||||
|
||||
// Array of additional info for each installed TMTask
|
||||
struct TMDesc {
|
||||
uint32 task; // Mac address of associated TMTask
|
||||
tm_time_t wakeup; // Time this task is scheduled for execution
|
||||
TMDesc *next;
|
||||
};
|
||||
|
||||
static TMDesc *tmDescList;
|
||||
|
||||
#if PRECISE_TIMING
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
static thread_id timer_thread = -1;
|
||||
static bool thread_active = true;
|
||||
static const tm_time_t wakeup_time_max = 0x7fffffffffffffff;
|
||||
static volatile tm_time_t wakeup_time = wakeup_time_max;
|
||||
static sem_id wakeup_time_sem = -1;
|
||||
static int32 timer_func(void *arg);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
static pthread_t timer_thread;
|
||||
static bool timer_thread_active = false;
|
||||
static volatile bool timer_thread_cancel = false;
|
||||
static tm_time_t wakeup_time_max = { 0x7fffffff, 999999999 };
|
||||
static tm_time_t wakeup_time = wakeup_time_max;
|
||||
static pthread_mutex_t wakeup_time_lock = PTHREAD_MUTEX_INITIALIZER;
|
||||
static void *timer_func(void *arg);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
static clock_serv_t system_clock;
|
||||
static thread_act_t timer_thread;
|
||||
static bool timer_thread_active = false;
|
||||
static tm_time_t wakeup_time_max = { 0x7fffffff, 999999999 };
|
||||
static tm_time_t wakeup_time = wakeup_time_max;
|
||||
static semaphore_t wakeup_time_sem;
|
||||
static void *timer_func(void *arg);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
inline static void free_desc(TMDesc *desc)
|
||||
{
|
||||
if (desc == tmDescList) {
|
||||
tmDescList = desc->next;
|
||||
} else {
|
||||
for (TMDesc *d = tmDescList; d; d = d->next) {
|
||||
if (d->next == desc) {
|
||||
d->next = desc->next;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
delete desc;
|
||||
}
|
||||
|
||||
/*
|
||||
* Find descriptor associated with given TMTask
|
||||
*/
|
||||
|
||||
inline static TMDesc *find_desc(uint32 tm)
|
||||
{
|
||||
TMDesc *desc = tmDescList;
|
||||
while (desc) {
|
||||
if (desc->task == tm) {
|
||||
return desc;
|
||||
}
|
||||
desc = desc->next;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Enqueue task in Time Manager queue
|
||||
*/
|
||||
|
||||
static void enqueue_tm(uint32 tm)
|
||||
{
|
||||
#if TM_QUEUE
|
||||
uint32 tm_var = ReadMacInt32(0xb30);
|
||||
WriteMacInt32(tm + qLink, ReadMacInt32(tm_var));
|
||||
WriteMacInt32(tm_var, tm);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Remove task from Time Manager queue
|
||||
*/
|
||||
|
||||
static void dequeue_tm(uint32 tm)
|
||||
{
|
||||
#if TM_QUEUE
|
||||
uint32 p = ReadMacInt32(0xb30);
|
||||
while (p) {
|
||||
uint32 next = ReadMacInt32(p + qLink);
|
||||
if (next == tm) {
|
||||
WriteMacInt32(p + qLink, ReadMacInt32(next + qLink));
|
||||
return;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Timer thread operations
|
||||
*/
|
||||
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
const int SIGSUSPEND = SIGRTMIN + 6;
|
||||
const int SIGRESUME = SIGRTMIN + 7;
|
||||
static struct sigaction sigsuspend_action;
|
||||
static struct sigaction sigresume_action;
|
||||
|
||||
static int suspend_count = 0;
|
||||
static pthread_mutex_t suspend_count_lock = PTHREAD_MUTEX_INITIALIZER;
|
||||
static sem_t suspend_ack_sem;
|
||||
static sigset_t suspend_handler_mask;
|
||||
|
||||
// Signal handler for suspended thread
|
||||
static void sigsuspend_handler(int sig)
|
||||
{
|
||||
sem_post(&suspend_ack_sem);
|
||||
sigsuspend(&suspend_handler_mask);
|
||||
}
|
||||
|
||||
// Signal handler for resumed thread
|
||||
static void sigresume_handler(int sig)
|
||||
{
|
||||
/* simply trigger a signal to stop clock_nanosleep() */
|
||||
}
|
||||
|
||||
// Initialize timer thread
|
||||
static bool timer_thread_init(void)
|
||||
{
|
||||
// Install suspend signal handler
|
||||
sigemptyset(&sigsuspend_action.sa_mask);
|
||||
sigaddset(&sigsuspend_action.sa_mask, SIGRESUME);
|
||||
sigsuspend_action.sa_handler = sigsuspend_handler;
|
||||
sigsuspend_action.sa_flags = SA_RESTART;
|
||||
#ifdef HAVE_SIGNAL_SA_RESTORER
|
||||
sigsuspend_action.sa_restorer = NULL;
|
||||
#endif
|
||||
if (sigaction(SIGSUSPEND, &sigsuspend_action, NULL) < 0)
|
||||
return false;
|
||||
|
||||
// Install resume signal handler
|
||||
sigemptyset(&sigresume_action.sa_mask);
|
||||
sigresume_action.sa_handler = sigresume_handler;
|
||||
sigresume_action.sa_flags = SA_RESTART;
|
||||
#ifdef HAVE_SIGNAL_SA_RESTORER
|
||||
sigresume_action.sa_restorer = NULL;
|
||||
#endif
|
||||
if (sigaction(SIGRESUME, &sigresume_action, NULL) < 0)
|
||||
return false;
|
||||
|
||||
// Initialize semaphore
|
||||
if (sem_init(&suspend_ack_sem, 0, 0) < 0)
|
||||
return false;
|
||||
|
||||
// Initialize suspend_handler_mask, it excludes SIGRESUME
|
||||
if (sigfillset(&suspend_handler_mask) != 0)
|
||||
return false;
|
||||
if (sigdelset(&suspend_handler_mask, SIGRESUME) != 0)
|
||||
return false;
|
||||
|
||||
// Create thread in running state
|
||||
suspend_count = 0;
|
||||
return (pthread_create(&timer_thread, NULL, timer_func, NULL) == 0);
|
||||
}
|
||||
|
||||
// Kill timer thread
|
||||
static void timer_thread_kill(void)
|
||||
{
|
||||
timer_thread_cancel = true;
|
||||
#ifdef HAVE_PTHREAD_CANCEL
|
||||
pthread_cancel(timer_thread);
|
||||
#endif
|
||||
pthread_join(timer_thread, NULL);
|
||||
}
|
||||
|
||||
// Suspend timer thread
|
||||
static void timer_thread_suspend(void)
|
||||
{
|
||||
pthread_mutex_lock(&suspend_count_lock);
|
||||
if (suspend_count == 0) {
|
||||
suspend_count ++;
|
||||
if (pthread_kill(timer_thread, SIGSUSPEND) == 0)
|
||||
sem_wait(&suspend_ack_sem);
|
||||
}
|
||||
pthread_mutex_unlock(&suspend_count_lock);
|
||||
}
|
||||
|
||||
// Resume timer thread
|
||||
static void timer_thread_resume(void)
|
||||
{
|
||||
pthread_mutex_lock(&suspend_count_lock);
|
||||
assert(suspend_count > 0);
|
||||
if (suspend_count == 1) {
|
||||
suspend_count = 0;
|
||||
pthread_kill(timer_thread, SIGRESUME);
|
||||
}
|
||||
pthread_mutex_unlock(&suspend_count_lock);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Initialize Time Manager
|
||||
*/
|
||||
|
||||
void TimerInit(void)
|
||||
{
|
||||
TimerReset();
|
||||
|
||||
#if PRECISE_TIMING
|
||||
// Start timer thread
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
wakeup_time_sem = create_sem(1, "Wakeup Time");
|
||||
timer_thread = spawn_thread(timer_func, "Time Manager", B_REAL_TIME_PRIORITY, NULL);
|
||||
resume_thread(timer_thread);
|
||||
#elif PRECISE_TIMING_MACH
|
||||
pthread_t pthread;
|
||||
|
||||
host_get_clock_service(mach_host_self(), REALTIME_CLOCK, &system_clock);
|
||||
semaphore_create(mach_task_self(), &wakeup_time_sem, SYNC_POLICY_FIFO, 1);
|
||||
|
||||
pthread_create(&pthread, NULL, &timer_func, NULL);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
timer_thread_active = timer_thread_init();
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Exit Time Manager
|
||||
*/
|
||||
|
||||
void TimerExit(void)
|
||||
{
|
||||
#if PRECISE_TIMING
|
||||
// Quit timer thread
|
||||
if (timer_thread > 0) {
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
status_t l;
|
||||
thread_active = false;
|
||||
suspend_thread(timer_thread);
|
||||
resume_thread(timer_thread);
|
||||
wait_for_thread(timer_thread, &l);
|
||||
delete_sem(wakeup_time_sem);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
timer_thread_active = false;
|
||||
semaphore_destroy(mach_task_self(), wakeup_time_sem);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
timer_thread_kill();
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Emulator reset, remove all timer tasks
|
||||
*/
|
||||
|
||||
void TimerReset(void)
|
||||
{
|
||||
TMDesc *desc = tmDescList;
|
||||
while (desc) {
|
||||
TMDesc *next = desc->next;
|
||||
delete desc;
|
||||
desc = next;
|
||||
}
|
||||
tmDescList = NULL;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Insert timer task
|
||||
*/
|
||||
|
||||
int16 InsTime(uint32 tm, uint16 trap)
|
||||
{
|
||||
D(bug("InsTime %08lx, trap %04x\n", tm, trap));
|
||||
WriteMacInt16((uint32)tm + qType, (ReadMacInt16((uint32)tm + qType) & 0x1fff) | ((trap << 4) & 0x6000));
|
||||
if (find_desc(tm))
|
||||
printf("WARNING: InsTime(%08x): Task re-inserted\n", tm);
|
||||
else {
|
||||
TMDesc *desc = new TMDesc;
|
||||
desc->task = tm;
|
||||
desc->next = tmDescList;
|
||||
tmDescList = desc;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Remove timer task
|
||||
*/
|
||||
|
||||
int16 RmvTime(uint32 tm)
|
||||
{
|
||||
D(bug("RmvTime %08lx\n", tm));
|
||||
|
||||
// Find descriptor
|
||||
TMDesc *desc = find_desc(tm);
|
||||
if (!desc) {
|
||||
printf("WARNING: RmvTime(%08x): Descriptor not found\n", tm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Task active?
|
||||
#if PRECISE_TIMING_BEOS
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
suspend_thread(timer_thread);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
thread_suspend(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
timer_thread_suspend();
|
||||
#endif
|
||||
if (ReadMacInt16(tm + qType) & 0x8000) {
|
||||
|
||||
// Yes, make task inactive and remove it from the Time Manager queue
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) & 0x7fff);
|
||||
dequeue_tm(tm);
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (TMDesc *d = tmDescList; d; d = d->next)
|
||||
if ((ReadMacInt16(d->task + qType) & 0x8000))
|
||||
if (timer_cmp_time(d->wakeup, wakeup_time) < 0)
|
||||
wakeup_time = d->wakeup;
|
||||
#endif
|
||||
|
||||
// Compute remaining time
|
||||
tm_time_t remaining, current;
|
||||
timer_current_time(current);
|
||||
timer_sub_time(remaining, desc->wakeup, current);
|
||||
WriteMacInt32(tm + tmCount, timer_host2mac_time(remaining));
|
||||
} else
|
||||
WriteMacInt32(tm + tmCount, 0);
|
||||
D(bug(" tmCount %ld\n", ReadMacInt32(tm + tmCount)));
|
||||
#if PRECISE_TIMING_BEOS
|
||||
release_sem(wakeup_time_sem);
|
||||
thread_info info;
|
||||
do {
|
||||
resume_thread(timer_thread); // This will unblock the thread
|
||||
get_thread_info(timer_thread, &info);
|
||||
} while (info.state == B_THREAD_SUSPENDED); // Sometimes, resume_thread() doesn't work (BeOS bug?)
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
thread_abort(timer_thread);
|
||||
thread_resume(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
timer_thread_resume();
|
||||
assert(suspend_count == 0);
|
||||
#endif
|
||||
|
||||
// Free descriptor
|
||||
free_desc(desc);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Start timer task
|
||||
*/
|
||||
|
||||
int16 PrimeTime(uint32 tm, int32 time)
|
||||
{
|
||||
D(bug("PrimeTime %08lx, time %ld\n", tm, time));
|
||||
|
||||
// Find descriptor
|
||||
TMDesc *desc = find_desc(tm);
|
||||
if (!desc) {
|
||||
printf("FATAL: PrimeTime(%08x): Descriptor not found\n", tm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Convert delay time
|
||||
tm_time_t delay;
|
||||
timer_mac2host_time(delay, time);
|
||||
|
||||
// Extended task?
|
||||
if (ReadMacInt16(tm + qType) & 0x4000) {
|
||||
|
||||
// Yes, tmWakeUp set?
|
||||
if (ReadMacInt32(tm + tmWakeUp)) {
|
||||
|
||||
// PrimeTime(0) can either mean (a) "the task runs as soon as interrupts are enabled"
|
||||
// or (b) "continue previous delay" if an expired task was stopped via RmvTime() and
|
||||
// then re-installed using InsXTime(). Since tmWakeUp was set, this is case (b).
|
||||
// The remaining time was saved in tmCount by RmvTime().
|
||||
if (time == 0) {
|
||||
timer_mac2host_time(delay, ReadMacInt16(tm + tmCount));
|
||||
}
|
||||
|
||||
// Yes, calculate wakeup time relative to last scheduled time
|
||||
tm_time_t wakeup;
|
||||
timer_add_time(wakeup, desc->wakeup, delay);
|
||||
desc->wakeup = wakeup;
|
||||
|
||||
} else {
|
||||
|
||||
// No, calculate wakeup time relative to current time
|
||||
tm_time_t now;
|
||||
timer_current_time(now);
|
||||
timer_add_time(desc->wakeup, now, delay);
|
||||
}
|
||||
|
||||
// Set tmWakeUp to indicate that task was scheduled
|
||||
WriteMacInt32(tm + tmWakeUp, 0x12345678);
|
||||
|
||||
} else {
|
||||
|
||||
// Not extended task, calculate wakeup time relative to current time
|
||||
tm_time_t now;
|
||||
timer_current_time(now);
|
||||
timer_add_time(desc->wakeup, now, delay);
|
||||
}
|
||||
|
||||
// Make task active and enqueue it in the Time Manager queue
|
||||
#if PRECISE_TIMING_BEOS
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
suspend_thread(timer_thread);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
thread_suspend(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
timer_thread_suspend();
|
||||
#endif
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) | 0x8000);
|
||||
enqueue_tm(tm);
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (TMDesc *d = tmDescList; d; d = d->next)
|
||||
if ((ReadMacInt16(d->task + qType) & 0x8000))
|
||||
if (timer_cmp_time(d->wakeup, wakeup_time) < 0)
|
||||
wakeup_time = d->wakeup;
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
release_sem(wakeup_time_sem);
|
||||
thread_info info;
|
||||
do {
|
||||
resume_thread(timer_thread); // This will unblock the thread
|
||||
get_thread_info(timer_thread, &info);
|
||||
} while (info.state == B_THREAD_SUSPENDED); // Sometimes, resume_thread() doesn't work (BeOS bug?)
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
thread_abort(timer_thread);
|
||||
thread_resume(timer_thread);
|
||||
#endif
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
timer_thread_resume();
|
||||
assert(suspend_count == 0);
|
||||
#endif
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Time Manager thread
|
||||
*/
|
||||
|
||||
#ifdef PRECISE_TIMING_BEOS
|
||||
static int32 timer_func(void *arg)
|
||||
{
|
||||
while (thread_active) {
|
||||
|
||||
// Wait until time specified by wakeup_time
|
||||
snooze_until(wakeup_time, B_SYSTEM_TIMEBASE);
|
||||
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
if (wakeup_time < system_time()) {
|
||||
|
||||
// Timer expired, trigger interrupt
|
||||
wakeup_time = 0x7fffffffffffffff;
|
||||
SetInterruptFlag(INTFLAG_TIMER);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
release_sem(wakeup_time_sem);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef PRECISE_TIMING_MACH
|
||||
static void *timer_func(void *arg)
|
||||
{
|
||||
timer_thread = mach_thread_self();
|
||||
timer_thread_active = true;
|
||||
|
||||
while (timer_thread_active) {
|
||||
clock_sleep(system_clock, TIME_ABSOLUTE, wakeup_time, NULL);
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
|
||||
tm_time_t system_time;
|
||||
|
||||
timer_current_time(system_time);
|
||||
if (timer_cmp_time(wakeup_time, system_time) < 0) {
|
||||
wakeup_time = wakeup_time_max;
|
||||
SetInterruptFlag(INTFLAG_TIMER);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef PRECISE_TIMING_POSIX
|
||||
static void *timer_func(void *arg)
|
||||
{
|
||||
while (!timer_thread_cancel) {
|
||||
// Wait until time specified by wakeup_time
|
||||
clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &wakeup_time, NULL);
|
||||
|
||||
tm_time_t system_time;
|
||||
timer_current_time(system_time);
|
||||
if (timer_cmp_time(wakeup_time, system_time) < 0) {
|
||||
|
||||
// Timer expired, trigger interrupt
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
wakeup_time = wakeup_time_max;
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
SetInterruptFlag(INTFLAG_TIMER);
|
||||
TriggerInterrupt();
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Timer interrupt function (executed as part of 60Hz interrupt)
|
||||
*/
|
||||
|
||||
void TimerInterrupt(void)
|
||||
{
|
||||
// D(bug("TimerIRQ\n"));
|
||||
|
||||
// Look for active TMTasks that have expired
|
||||
tm_time_t now;
|
||||
timer_current_time(now);
|
||||
TMDesc *desc = tmDescList;
|
||||
while (desc) {
|
||||
TMDesc *next = desc->next;
|
||||
uint32 tm = desc->task;
|
||||
if ((ReadMacInt16(tm + qType) & 0x8000) && timer_cmp_time(desc->wakeup, now) <= 0) {
|
||||
|
||||
// Found one, mark as inactive and remove it from the Time Manager queue
|
||||
WriteMacInt16(tm + qType, ReadMacInt16(tm + qType) & 0x7fff);
|
||||
dequeue_tm(tm);
|
||||
|
||||
// Call timer function
|
||||
uint32 addr = ReadMacInt32(tm + tmAddr);
|
||||
if (addr) {
|
||||
D(bug("Calling TimeTask %08lx, addr %08lx\n", tm, addr));
|
||||
M68kRegisters r;
|
||||
r.a[0] = addr;
|
||||
r.a[1] = tm;
|
||||
Execute68k(r.a[0], &r);
|
||||
D(bug(" returned from TimeTask\n"));
|
||||
}
|
||||
}
|
||||
desc = next;
|
||||
}
|
||||
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
#if PRECISE_TIMING_BEOS
|
||||
while (acquire_sem(wakeup_time_sem) == B_INTERRUPTED) ;
|
||||
suspend_thread(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_MACH
|
||||
semaphore_wait(wakeup_time_sem);
|
||||
thread_suspend(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
timer_thread_suspend();
|
||||
#endif
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (TMDesc *d = tmDescList; d; d = d->next)
|
||||
if ((ReadMacInt16(d->task + qType) & 0x8000))
|
||||
if (timer_cmp_time(d->wakeup, wakeup_time) < 0)
|
||||
wakeup_time = d->wakeup;
|
||||
#if PRECISE_TIMING_BEOS
|
||||
release_sem(wakeup_time_sem);
|
||||
thread_info info;
|
||||
do {
|
||||
resume_thread(timer_thread); // This will unblock the thread
|
||||
get_thread_info(timer_thread, &info);
|
||||
} while (info.state == B_THREAD_SUSPENDED); // Sometimes, resume_thread() doesn't work (BeOS bug?)
|
||||
#endif
|
||||
#if PRECISE_TIMING_MACH
|
||||
semaphore_signal(wakeup_time_sem);
|
||||
thread_abort(timer_thread);
|
||||
thread_resume(timer_thread);
|
||||
#endif
|
||||
#if PRECISE_TIMING_POSIX
|
||||
pthread_mutex_unlock(&wakeup_time_lock);
|
||||
timer_thread_resume();
|
||||
assert(suspend_count == 0);
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
Loading…
Reference in New Issue