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push events through event/or lists.

This commit is contained in:
steve 2001-12-29 23:59:06 +00:00
parent 91b01cd67e
commit 5de8e0555c
1 changed files with 24 additions and 4 deletions
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26
vvp/event.cc
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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/ */
#if !defined(WINNT) #if !defined(WINNT)
#ident "$Id: event.cc,v 1.2 2001/11/16 04:22:27 steve Exp $" #ident "$Id: event.cc,v 1.3 2001/12/29 23:59:06 steve Exp $"
#endif #endif
# include "event.h" # include "event.h"
@ -39,6 +39,10 @@ event_functor_s::event_functor_s(edge_t e)
event_functor_s::~event_functor_s() event_functor_s::~event_functor_s()
{} {}
/*
* Receive a value into an event functor, whether an edge or event/or.
* Detect edges, if any, then schedule awakened threads.
*/
void event_functor_s::set(vvp_ipoint_t ptr, bool, unsigned val, unsigned) void event_functor_s::set(vvp_ipoint_t ptr, bool, unsigned val, unsigned)
{ {
old_ival = ival; old_ival = ival;
@ -49,6 +53,10 @@ void event_functor_s::set(vvp_ipoint_t ptr, bool, unsigned val, unsigned)
bool edge_p = true; bool edge_p = true;
/* If there is an edge detect lookup table, then use the
out input and new input to detect whether this is the
requested edge. If there is no edge table, then any
set is a match. */
if (edge) { if (edge) {
unsigned pp = ipoint_port(ptr); unsigned pp = ipoint_port(ptr);
@ -60,14 +68,23 @@ void event_functor_s::set(vvp_ipoint_t ptr, bool, unsigned val, unsigned)
edge_p = ((edge>>val) & 1) != 0; edge_p = ((edge>>val) & 1) != 0;
} }
/* If we detect an edge, then schedule any threads that
are attached to this event, then propagate the
positive detect to the output.
Note that only other events (notably event/or
functors) can be connected to event outputs. */
if (edge_p) { if (edge_p) {
vthread_t tmp = threads; vthread_t tmp = threads;
threads = 0; threads = 0;
vthread_schedule_list(tmp); vthread_schedule_list(tmp);
if (out) if (out) {
functor_set(out, 0, St0, true);
}
// only one output? Why not propagate? // only one output? Why not propagate?
schedule_assign(out, 0, 0); //schedule_assign(out, 0, 0);
} }
} }
} }
@ -131,6 +148,9 @@ void compile_event(char*label, char*type,
/* /*
* $Log: event.cc,v $ * $Log: event.cc,v $
* Revision 1.3 2001/12/29 23:59:06 steve
* push events through event/or lists.
*
* Revision 1.2 2001/11/16 04:22:27 steve * Revision 1.2 2001/11/16 04:22:27 steve
* include stdlib.h for portability. * include stdlib.h for portability.
* *