mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-11-26 10:49:21 +00:00
use linked list for timers to avoid running out of descriptors
This commit is contained in:
asvitkine
parent
812db6ed4f
commit
efad3ba70a
@ -53,11 +53,10 @@ 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
|
||||
@ -89,43 +88,35 @@ static void *timer_func(void *arg);
|
||||
#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;
|
||||
}
|
||||
|
||||
|
||||
@ -271,9 +262,7 @@ static void timer_thread_resume(void)
|
||||
|
||||
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
|
||||
@ -331,9 +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 = desc->next;
|
||||
}
|
||||
tmDescList = NULL;
|
||||
}
|
||||
|
||||
|
||||
@ -345,12 +338,13 @@ 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) >= 0)
|
||||
printf("WARNING: InsTime(): Task re-inserted\n");
|
||||
if (find_desc(tm))
|
||||
printf("WARNING: InsTime(%08lx): 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;
|
||||
}
|
||||
@ -365,8 +359,8 @@ 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(%08lx): Descriptor not found\n", tm);
|
||||
return 0;
|
||||
}
|
||||
@ -392,17 +386,16 @@ int16 RmvTime(uint32 tm)
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (int j=0; j<NUM_DESCS; j++) {
|
||||
if (desc[j].in_use && (ReadMacInt16(desc[j].task + qType) & 0x8000))
|
||||
if (timer_cmp_time(desc[j].wakeup, wakeup_time) < 0)
|
||||
wakeup_time = desc[j].wakeup;
|
||||
}
|
||||
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);
|
||||
@ -427,7 +420,7 @@ int16 RmvTime(uint32 tm)
|
||||
#endif
|
||||
|
||||
// Free descriptor
|
||||
free_desc(i);
|
||||
free_desc(desc);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -441,9 +434,9 @@ int16 PrimeTime(uint32 tm, int32 time)
|
||||
D(bug("PrimeTime %08lx, time %ld\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(%08lx): Descriptor not found\n", tm);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -467,15 +460,15 @@ int16 PrimeTime(uint32 tm, int32 time)
|
||||
|
||||
// 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
|
||||
@ -486,7 +479,7 @@ int16 PrimeTime(uint32 tm, int32 time)
|
||||
// Not extended task, 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);
|
||||
}
|
||||
|
||||
// Make task active and enqueue it in the Time Manager queue
|
||||
@ -507,11 +500,10 @@ int16 PrimeTime(uint32 tm, int32 time)
|
||||
#if PRECISE_TIMING
|
||||
// Look for next task to be called and set wakeup_time
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (int j=0; j<NUM_DESCS; j++) {
|
||||
if (desc[j].in_use && (ReadMacInt16(desc[j].task + qType) & 0x8000))
|
||||
if (timer_cmp_time(desc[j].wakeup, wakeup_time) < 0)
|
||||
wakeup_time = desc[j].wakeup;
|
||||
}
|
||||
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;
|
||||
@ -619,27 +611,29 @@ 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(r.a[0], &r);
|
||||
D(bug(" returned from TimeTask\n"));
|
||||
}
|
||||
// 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
|
||||
@ -656,11 +650,10 @@ void TimerInterrupt(void)
|
||||
pthread_mutex_lock(&wakeup_time_lock);
|
||||
#endif
|
||||
wakeup_time = wakeup_time_max;
|
||||
for (int j=0; j<NUM_DESCS; j++) {
|
||||
if (desc[j].in_use && (ReadMacInt16(desc[j].task + qType) & 0x8000))
|
||||
if (timer_cmp_time(desc[j].wakeup, wakeup_time) < 0)
|
||||
wakeup_time = desc[j].wakeup;
|
||||
}
|
||||
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;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user