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Event callbacks support vpi_remove_cb.

This commit is contained in:
steve 2003-05-04 20:43:36 +00:00
parent d958fd2c36
commit 1b7c876fd8
1 changed files with 36 additions and 7 deletions
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43
vvp/vpi_event.cc
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2002 Stephen Williams (steve@icarus.com)
* Copyright (c) 2002-2003 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: vpi_event.cc,v 1.8 2003/04/23 03:09:25 steve Exp $"
#ident "$Id: vpi_event.cc,v 1.9 2003/05/04 20:43:36 steve Exp $"
#endif
# include "vpi_priv.h"
@ -100,22 +100,51 @@ vpiHandle vpip_make_named_event(const char*name, vvp_ipoint_t funct)
return &obj->base;
}
/*
* This function runs the callbacks for a named event. All the
* callbacks are listed in the callback member of the event handle,
* this function scans that list.
*
* This also handles the case where the callback has been removed. The
* vpi_remove_cb doesn't actually remove any callbacks, it marks them
* as cancelled by clearing the cb_rtn function. This function reaps
* those marked handles when it scans the list.
*/
void vpip_run_named_event_callbacks(vpiHandle ref)
{
assert((ref->vpi_type->type_code==vpiNamedEvent));
struct __vpiNamedEvent*obj = (struct __vpiNamedEvent*)ref;
struct __vpiCallback*cur = obj->callbacks;
while (cur) {
struct __vpiCallback*next = cur->next;
callback_execute(cur);
cur = next;
struct __vpiCallback*next = obj->callbacks;
struct __vpiCallback*prev = 0;
while (next) {
struct __vpiCallback*cur = next;
next = cur->next;
if (cur->cb_data.cb_rtn != 0) {
callback_execute(cur);
prev = cur;
} else if (prev == 0) {
obj->callbacks = next;
cur->next = 0;
vpi_free_object(&cur->base);
} else {
assert(prev->next == cur);
prev->next = next;
cur->next = 0;
vpi_free_object(&cur->base);
}
}
}
/*
* $Log: vpi_event.cc,v $
* Revision 1.9 2003/05/04 20:43:36 steve
* Event callbacks support vpi_remove_cb.
*
* Revision 1.8 2003/04/23 03:09:25 steve
* VPI Access to named events.
*