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allow cancelling of cbValueChange events.

This commit is contained in:
steve 2000-03-31 07:08:39 +00:00
parent d97ab9be23
commit 26dcecebdb
4 changed files with 72 additions and 24 deletions
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15
vpi/sys_display.c
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT) && !defined(macintosh)
#ident "$Id: sys_display.c,v 1.11 2000/02/23 02:56:56 steve Exp $"
#ident "$Id: sys_display.c,v 1.12 2000/03/31 07:08:39 steve Exp $"
#endif
# include "vpi_user.h"
@ -300,11 +300,14 @@ static int monitor_cb_1(p_cb_data cause)
{
struct t_cb_data cb;
struct t_vpi_time time;
/* The user_data of the callback is a pointer to the callback
handle. I use this to reschedule the callback if needed. */
vpiHandle*cbh = (vpiHandle*) (cause->user_data);
/* Reschedule this event so that it happens for the next
trigger on this variable. */
cb = *cause;
vpi_register_cb(&cb);
*cbh = vpi_register_cb(&cb);
if (monitor_scheduled) return 0;
@ -363,6 +366,11 @@ static int sys_monitor_calltf(char*name)
switch (vpi_get(vpiType, monitor_info.items[idx])) {
case vpiNet:
case vpiReg:
/* Monitoring reg and net values involves setting
a collback for value changes. pass the storage
pointer for the callback itself as user_data so
that the callback can refresh itself. */
cb.user_data = (char*)(monitor_callbacks+idx);
cb.obj = monitor_info.items[idx];
monitor_callbacks[idx] = vpi_register_cb(&cb);
break;
@ -413,6 +421,9 @@ void sys_display_register()
/*
* $Log: sys_display.c,v $
* Revision 1.12 2000/03/31 07:08:39 steve
* allow cancelling of cbValueChange events.
*
* Revision 1.11 2000/02/23 02:56:56 steve
* Macintosh compilers do not support ident.
*

58
vvm/vpi_callback.c
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT) && !defined(macintosh)
#ident "$Id: vpi_callback.c,v 1.6 2000/02/23 02:56:56 steve Exp $"
#ident "$Id: vpi_callback.c,v 1.7 2000/03/31 07:08:39 steve Exp $"
#endif
# include "vpi_priv.h"
@ -69,20 +69,15 @@ static void vpip_call_callback(void*cp)
void vpip_run_value_changes(struct __vpiSignal*sig)
{
struct __vpiCallback*cur;
if (sig->monitor == 0) return;
while (sig->monitor->next != sig->monitor) {
cur = sig->monitor->next;
sig->monitor->next = cur->next;
while (sig->mfirst) {
cur = sig->mfirst;
sig->mfirst = cur->next;
if (sig->mfirst == 0)
sig->mlast = 0;
cur->next = 0;
cur->ev = vpip_sim_insert_event(0, cur, vpip_call_callback, 0);
}
cur = sig->monitor;
sig->monitor = 0;
cur->next = 0;
cur->ev = vpip_sim_insert_event(0, cur, vpip_call_callback, 0);
}
/*
@ -110,18 +105,21 @@ static void go_value_change(struct __vpiCallback*rfp)
assert((sig->base.vpi_type->type_code == vpiReg)
|| (sig->base.vpi_type->type_code == vpiNet));
/* If there are no monitor events, start the list. */
if (sig->monitor == 0) {
rfp->next = rfp;
sig->monitor = rfp;
if (sig->mfirst == 0) {
rfp->sig = sig;
rfp->next = 0;
sig->mfirst = rfp;
sig->mlast = rfp;
return;
}
/* Put me at the end of the list. Remember that the monitor
points to the *last* item in the list. */
rfp->next = sig->monitor->next;
sig->monitor->next = rfp;
sig->monitor = rfp;
rfp->sig = sig;
rfp->next = 0;
sig->mlast->next = rfp;
}
/*
@ -157,9 +155,32 @@ int vpi_remove_cb(vpiHandle ref)
assert(ref->vpi_type->type_code == vpiCallback);
if (rfp->ev) {
/* callbacks attached to events are easy. */
vpip_sim_cancel_event(rfp->ev);
} else if (rfp->sig) {
/* callbacks to signals need to be removed from the
signal's list of monitor callbacks. */
struct __vpiSignal*sig = rfp->sig;
if (sig->mfirst == rfp) {
sig->mfirst = rfp->next;
if (sig->mfirst == 0)
sig->mlast = 0;
rfp->next = 0;
rfp->sig = 0;
} else {
struct __vpiCallback*cur = sig->mfirst;
while (cur->next != rfp) {
assert(cur->next);
cur = cur->next;
}
cur->next = rfp->next;
if (cur->next == 0)
sig->mlast = cur;
}
} else {
assert(0);
}
@ -170,6 +191,9 @@ int vpi_remove_cb(vpiHandle ref)
/*
* $Log: vpi_callback.c,v $
* Revision 1.7 2000/03/31 07:08:39 steve
* allow cancelling of cbValueChange events.
*
* Revision 1.6 2000/02/23 02:56:56 steve
* Macintosh compilers do not support ident.
*

12
vvm/vpi_priv.h
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT) && !defined(macintosh)
#ident "$Id: vpi_priv.h,v 1.13 2000/03/25 05:02:24 steve Exp $"
#ident "$Id: vpi_priv.h,v 1.14 2000/03/31 07:08:39 steve Exp $"
#endif
/*
@ -127,7 +127,11 @@ struct __vpiCallback {
struct __vpiHandle base;
struct t_cb_data cb_data;
/* Set this value if I'm pending in the event queue. */
struct vpip_event*ev;
/* Set this value if I'm waiting for a value change on a signal*/
struct __vpiSignal*sig;
struct __vpiCallback*next;
};
@ -205,7 +209,8 @@ struct __vpiSignal {
vpip_bit_t*bits;
unsigned nbits;
/* monitors are added here. */
struct __vpiCallback*monitor;
struct __vpiCallback*mfirst;
struct __vpiCallback*mlast;
};
@ -337,6 +342,9 @@ extern int vpip_finished();
/*
* $Log: vpi_priv.h,v $
* Revision 1.14 2000/03/31 07:08:39 steve
* allow cancelling of cbValueChange events.
*
* Revision 1.13 2000/03/25 05:02:24 steve
* signal bits are referenced at run time by the vpiSignal struct.
*

11
vvm/vpi_signal.c
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT) && !defined(macintosh)
#ident "$Id: vpi_signal.c,v 1.8 2000/03/25 05:02:25 steve Exp $"
#ident "$Id: vpi_signal.c,v 1.9 2000/03/31 07:08:39 steve Exp $"
#endif
# include "vpi_priv.h"
@ -82,7 +82,8 @@ vpiHandle vpip_make_net(struct __vpiSignal*ref, const char*name,
ref->name = name;
ref->bits = b;
ref->nbits = nb;
ref->monitor = 0;
ref->mfirst = 0;
ref->mlast = 0;
return &(ref->base);
}
@ -103,12 +104,16 @@ vpiHandle vpip_make_reg(struct __vpiSignal*ref, const char*name,
ref->name = name;
ref->bits = b;
ref->nbits = nb;
ref->monitor = 0;
ref->mfirst = 0;
ref->mlast = 0;
return &(ref->base);
}
/*
* $Log: vpi_signal.c,v $
* Revision 1.9 2000/03/31 07:08:39 steve
* allow cancelling of cbValueChange events.
*
* Revision 1.8 2000/03/25 05:02:25 steve
* signal bits are referenced at run time by the vpiSignal struct.
*