/*--------------------------------------------------------------------*/
/*--- Callgrind ---*/
/*--- events.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Callgrind, a Valgrind tool for call tracing.
Copyright (C) 2002-2013, Josef Weidendorfer (Josef.Weidendorfer@gmx.de)
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.
The GNU General Public License is contained in the file COPYING.
*/
#include "global.h"
/* This should be 2**MAX_EVENTGROUP_COUNT */
#define MAX_EVENTSET_COUNT 1024
static EventGroup* eventGroup[MAX_EVENTGROUP_COUNT];
static EventSet* eventSetTable[MAX_EVENTSET_COUNT];
static Bool eventSets_initialized = 0;
static
void initialize_event_sets(void)
{
Int i;
if (eventSets_initialized) return;
for(i=0; i< MAX_EVENTGROUP_COUNT; i++)
eventGroup[i] = 0;
for(i=0; i< MAX_EVENTSET_COUNT; i++)
eventSetTable[i] = 0;
eventSets_initialized = 1;
}
static
EventGroup* new_event_group(int id, int n)
{
EventGroup* eg;
initialize_event_sets();
CLG_ASSERT(id>=0 && id<MAX_EVENTGROUP_COUNT);
CLG_ASSERT(eventGroup[id]==0);
eg = (EventGroup*) CLG_MALLOC("cl.events.group.1",
sizeof(EventGroup) + n * sizeof(HChar*));
eg->size = n;
eventGroup[id] = eg;
return eg;
}
EventGroup* CLG_(register_event_group) (int id, const HChar* n1)
{
EventGroup* eg = new_event_group(id, 1);
eg->name[0] = n1;
return eg;
}
EventGroup* CLG_(register_event_group2)(int id, const HChar* n1,
const HChar* n2)
{
EventGroup* eg = new_event_group(id, 2);
eg->name[0] = n1;
eg->name[1] = n2;
return eg;
}
EventGroup* CLG_(register_event_group3)(int id, const HChar* n1,
const HChar* n2, const HChar* n3)
{
EventGroup* eg = new_event_group(id, 3);
eg->name[0] = n1;
eg->name[1] = n2;
eg->name[2] = n3;
return eg;
}
EventGroup* CLG_(register_event_group4)(int id, const HChar* n1,
const HChar* n2, const HChar* n3,
const HChar* n4)
{
EventGroup* eg = new_event_group(id, 4);
eg->name[0] = n1;
eg->name[1] = n2;
eg->name[2] = n3;
eg->name[3] = n4;
return eg;
}
EventGroup* CLG_(get_event_group)(int id)
{
CLG_ASSERT(id>=0 && id<MAX_EVENTGROUP_COUNT);
return eventGroup[id];
}
static
EventSet* eventset_from_mask(UInt mask)
{
EventSet* es;
Int i, count, offset;
if (mask >= MAX_EVENTSET_COUNT) return 0;
initialize_event_sets();
if (eventSetTable[mask]) return eventSetTable[mask];
es = (EventSet*) CLG_MALLOC("cl.events.eventset.1", sizeof(EventSet));
es->mask = mask;
offset = 0;
count = 0;
for(i=0;i<MAX_EVENTGROUP_COUNT;i++) {
es->offset[i] = offset;
if ( ((mask & (1u<<i))==0) || (eventGroup[i]==0))
continue;
offset += eventGroup[i]->size;
count++;
}
es->size = offset;
es->count = count;
eventSetTable[mask] = es;
return es;
}
EventSet* CLG_(get_event_set)(Int id)
{
CLG_ASSERT(id>=0 && id<MAX_EVENTGROUP_COUNT);
return eventset_from_mask(1u << id);
}
EventSet* CLG_(get_event_set2)(Int id1, Int id2)
{
CLG_ASSERT(id1>=0 && id1<MAX_EVENTGROUP_COUNT);
CLG_ASSERT(id2>=0 && id2<MAX_EVENTGROUP_COUNT);
return eventset_from_mask((1u << id1) | (1u << id2));
}
EventSet* CLG_(add_event_group)(EventSet* es, Int id)
{
CLG_ASSERT(id>=0 && id<MAX_EVENTGROUP_COUNT);
if (!es) es = eventset_from_mask(0);
return eventset_from_mask(es->mask | (1u << id));
}
EventSet* CLG_(add_event_group2)(EventSet* es, Int id1, Int id2)
{
CLG_ASSERT(id1>=0 && id1<MAX_EVENTGROUP_COUNT);
CLG_ASSERT(id2>=0 && id2<MAX_EVENTGROUP_COUNT);
if (!es) es = eventset_from_mask(0);
return eventset_from_mask(es->mask | (1u << id1) | (1u << id2));
}
EventSet* CLG_(add_event_set)(EventSet* es1, EventSet* es2)
{
if (!es1) es1 = eventset_from_mask(0);
if (!es2) es2 = eventset_from_mask(0);
return eventset_from_mask(es1->mask | es2->mask);
}
/* Get cost array for an event set */
ULong* CLG_(get_eventset_cost)(EventSet* es)
{
return CLG_(get_costarray)(es->size);
}
/* Set all costs of an event set to zero */
void CLG_(init_cost)(EventSet* es, ULong* cost)
{
Int i;
if (!cost) return;
for(i=0; i<es->size; i++)
cost[i] = 0;
}
/* Set all costs of an event set to zero */
void CLG_(init_cost_lz)(EventSet* es, ULong** cost)
{
Int i;
CLG_ASSERT(cost != 0);
if (!(*cost))
*cost = CLG_(get_eventset_cost)(es);
for(i=0; i<es->size; i++)
(*cost)[i] = 0;
}
void CLG_(zero_cost)(EventSet* es, ULong* cost)
{
Int i;
if (!cost) return;
for(i=0;i<es->size;i++)
cost[i] = 0;
}
Bool CLG_(is_zero_cost)(EventSet* es, ULong* cost)
{
Int i;
if (!cost) return True;
for(i=0; i<es->size; i++)
if (cost[i] != 0) return False;
return True;
}
void CLG_(copy_cost)(EventSet* es, ULong* dst, ULong* src)
{
Int i;
if (!src) {
CLG_(zero_cost)(es, dst);
return;
}
CLG_ASSERT(dst != 0);
for(i=0;i<es->size;i++)
dst[i] = src[i];
}
void CLG_(copy_cost_lz)(EventSet* es, ULong** pdst, ULong* src)
{
Int i;
ULong* dst;
CLG_ASSERT(pdst != 0);
if (!src) {
CLG_(zero_cost)(es, *pdst);
return;
}
dst = *pdst;
if (!dst)
dst = *pdst = CLG_(get_eventset_cost)(es);
for(i=0;i<es->size;i++)
dst[i] = src[i];
}
void CLG_(add_cost)(EventSet* es, ULong* dst, ULong* src)
{
Int i;
if (!src) return;
CLG_ASSERT(dst != 0);
for(i=0; i<es->size; i++)
dst[i] += src[i];
}
void CLG_(add_cost_lz)(EventSet* es, ULong** pdst, ULong* src)
{
Int i;
ULong* dst;
if (!src) return;
CLG_ASSERT(pdst != 0);
dst = *pdst;
if (!dst) {
dst = *pdst = CLG_(get_eventset_cost)(es);
CLG_(copy_cost)(es, dst, src);
return;
}
for(i=0; i<es->size; i++)
dst[i] += src[i];
}
/* Adds src to dst and zeros src. Returns false if nothing changed */
Bool CLG_(add_and_zero_cost)(EventSet* es, ULong* dst, ULong* src)
{
Int i;
Bool is_nonzero = False;
CLG_ASSERT((es != 0) && (dst != 0));
if (!src) return False;
for(i=0; i<es->size; i++) {
if (src[i]==0) continue;
dst[i] += src[i];
src[i] = 0;
is_nonzero = True;
}
return is_nonzero;
}
/* Adds src to dst and zeros src. Returns false if nothing changed */
Bool CLG_(add_and_zero_cost2)(EventSet* esDst, ULong* dst,
EventSet* esSrc, ULong* src)
{
Int i,j;
Bool is_nonzero = False;
UInt mask;
EventGroup *eg;
ULong *egDst, *egSrc;
CLG_ASSERT((esDst != 0) && (dst != 0) && (esSrc != 0));
if (!src) return False;
for(i=0, mask=1; i<MAX_EVENTGROUP_COUNT; i++, mask=mask<<1) {
if ((esSrc->mask & mask)==0) continue;
if (eventGroup[i] ==0) continue;
/* if src has a subset, dst must have, too */
CLG_ASSERT((esDst->mask & mask)>0);
eg = eventGroup[i];
egSrc = src + esSrc->offset[i];
egDst = dst + esDst->offset[i];
for(j=0; j<eg->size; j++) {
if (egSrc[j]==0) continue;
egDst[j] += egSrc[j];
egSrc[j] = 0;
is_nonzero = True;
}
}
return is_nonzero;
}
/* Adds difference of new and old to dst, and set old to new.
* Returns false if nothing changed */
Bool CLG_(add_diff_cost)(EventSet* es, ULong* dst, ULong* old, ULong* new_cost)
{
Int i;
Bool is_nonzero = False;
CLG_ASSERT((es != 0) && (dst != 0));
CLG_ASSERT(old && new_cost);
for(i=0; i<es->size; i++) {
if (new_cost[i] == old[i]) continue;
dst[i] += new_cost[i] - old[i];
old[i] = new_cost[i];
is_nonzero = True;
}
return is_nonzero;
}
Bool CLG_(add_diff_cost_lz)(EventSet* es, ULong** pdst, ULong* old, ULong* new_cost)
{
Int i;
ULong* dst;
Bool is_nonzero = False;
CLG_ASSERT((es != 0) && (pdst != 0));
CLG_ASSERT(old && new_cost);
dst = *pdst;
if (!dst) {
dst = *pdst = CLG_(get_eventset_cost)(es);
CLG_(zero_cost)(es, dst);
}
for(i=0; i<es->size; i++) {
if (new_cost[i] == old[i]) continue;
dst[i] += new_cost[i] - old[i];
old[i] = new_cost[i];
is_nonzero = True;
}
return is_nonzero;
}
/* Allocate space for an event mapping */
EventMapping* CLG_(get_eventmapping)(EventSet* es)
{
EventMapping* em;
CLG_ASSERT(es != 0);
em = (EventMapping*) CLG_MALLOC("cl.events.geMapping.1",
sizeof(EventMapping) +
sizeof(struct EventMappingEntry) *
es->size);
em->capacity = es->size;
em->size = 0;
em->es = es;
return em;
}
void CLG_(append_event)(EventMapping* em, const HChar* n)
{
Int i, j, offset = 0;
UInt mask;
EventGroup* eg;
CLG_ASSERT(em != 0);
for(i=0, mask=1; i<MAX_EVENTGROUP_COUNT; i++, mask=mask<<1) {
if ((em->es->mask & mask)==0) continue;
if (eventGroup[i] ==0) continue;
eg = eventGroup[i];
for(j=0; j<eg->size; j++, offset++) {
if (VG_(strcmp)(n, eg->name[j])!=0)
continue;
CLG_ASSERT(em->capacity > em->size);
em->entry[em->size].group = i;
em->entry[em->size].index = j;
em->entry[em->size].offset = offset;
em->size++;
return;
}
}
}
/* Returns pointer to dynamically string. The string will be overwritten
with each invocation. */
HChar *CLG_(eventmapping_as_string)(const EventMapping* em)
{
Int i;
EventGroup* eg;
CLG_ASSERT(em != 0);
XArray *xa = VG_(newXA)(VG_(malloc), "cl.events.emas", VG_(free),
sizeof(HChar));
for(i=0; i< em->size; i++) {
if (i > 0) {
VG_(xaprintf)(xa, "%c", ' ');
}
eg = eventGroup[em->entry[i].group];
CLG_ASSERT(eg != 0);
VG_(xaprintf)(xa, "%s", eg->name[em->entry[i].index]);
}
VG_(xaprintf)(xa, "%c", '\0'); // zero terminate the string
HChar *buf = VG_(strdup)("cl.events.emas", VG_(indexXA)(xa, 0));
VG_(deleteXA)(xa);
return buf;
}
/* Returns pointer to dynamically allocated string. Caller needs to
VG_(free) it. */
HChar *CLG_(mappingcost_as_string)(const EventMapping* em, const ULong* c)
{
Int i, skipped = 0;
if (!c || em->size==0) return VG_(strdup)("cl.events.mcas", "");
XArray *xa = VG_(newXA)(VG_(malloc), "cl.events.mcas", VG_(free),
sizeof(HChar));
/* At least one entry */
VG_(xaprintf)(xa, "%llu", c[em->entry[0].offset]);
for(i=1; i<em->size; i++) {
if (c[em->entry[i].offset] == 0) {
skipped++;
continue;
}
while(skipped>0) {
VG_(xaprintf)(xa, " 0");
skipped--;
}
VG_(xaprintf)(xa, " %llu", c[em->entry[i].offset]);
}
VG_(xaprintf)(xa, "%c", '\0'); // zero terminate the string
HChar *buf = VG_(strdup)("cl.events.mas", VG_(indexXA)(xa, 0));
VG_(deleteXA)(xa);
return buf;
}