#ifdef USE_PAPI /* ugly */
+#include <papi.h>
+
#include "Papi.h"
#include "Rts.h"
#include "RtsUtils.h"
#include "Stats.h"
#include "RtsFlags.h"
+#include "OSThreads.h"
+// used to protect the aggregated counters
+#ifdef THREADED_RTS
+static Mutex papi_counter_mutex;
+#endif
struct _papi_events {
int event_code;
char * event_name;
};
-#define PAPI_ADD_EVENT(EVENT) \
- { \
- ASSERT(n_papi_events<MAX_PAPI_EVENTS); \
- papi_events[n_papi_events].event_code = EVENT; \
- papi_events[n_papi_events].event_name = #EVENT; \
- n_papi_events++; \
- }
-
-/* Report the value of a counter */
-#define PAPI_REPORT(EVENTSET,EVENT) \
- { \
- ullong_format_string(papi_counter(EVENTSET,EVENT),temp,rtsTrue/*commas*/); \
- statsPrintf(" (" #EVENT ") : %s\n",temp); \
- }
-
-/* Report the value of a counter as a percentage of another counter */
-#define PAPI_REPORT_PCT(EVENTSET,EVENT,EVENTTOT) \
- statsPrintf(" (" #EVENT ") %% of (" #EVENTTOT ") : %.1f%%\n", \
- papi_counter(EVENTSET,EVENT)*100.0/papi_counter(EVENTSET,EVENTTOT))
-
/* Beware, these counters are Opteron specific
* I obtained the numbers using the papi_avail
* and papi_native_avail utilities.
#define DC_L2_REFILL_MOES 0x40001e1b
#define DC_SYS_REFILL_MOES 0x40001e1c
-/* Number of counted events, computed from size of papi_events */
-#define N_PAPI_EVENTS n_papi_events
-
/* This is bad, it should be in a header */
#define BIG_STRING_LEN 512
+
+#define PAPI_CHECK(CALL) \
+ if((papi_error=(CALL)) != PAPI_OK) { \
+ debugBelch("PAPI function failed in module %s at line %d with error code %d\n", \
+ __FILE__,__LINE__,papi_error); \
+ }
+
/* While PAPI reporting is going on this flag is on */
int papi_is_reporting;
+static long_long papi_counter(long_long values[],int event);
+static void papi_add_events(int EventSet);
+
/* If you want to add events to count, extend the
* init_countable_events and the papi_report function.
* Be aware that your processor can count a limited number
static void
init_countable_events(void)
{
+#define PAPI_ADD_EVENT(EVENT) \
+ { \
+ if (n_papi_events >= MAX_PAPI_EVENTS) { \
+ barf("too many PAPI events"); \
+ } \
+ papi_events[n_papi_events].event_code = EVENT; \
+ papi_events[n_papi_events].event_name = #EVENT; \
+ n_papi_events++; \
+ }
+
PAPI_ADD_EVENT(PAPI_TOT_INS);
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
+ if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
PAPI_ADD_EVENT(FR_BR);
PAPI_ADD_EVENT(FR_BR_MIS);
/* Docs are wrong? Opteron does not count indirect branch misses exclusively */
PAPI_ADD_EVENT(FR_BR_MISCOMPARE);
- }
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
PAPI_ADD_EVENT(FR_DISPATCH_STALLS);
PAPI_ADD_EVENT(FR_DISPATCH_STALLS_BR);
PAPI_ADD_EVENT(FR_DISPATCH_STALLS_FULL_LS);
- }
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
PAPI_ADD_EVENT(PAPI_L1_DCA);
PAPI_ADD_EVENT(PAPI_L1_DCM);
- }
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
PAPI_ADD_EVENT(PAPI_L2_DCA);
PAPI_ADD_EVENT(PAPI_L2_DCM);
- }
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CB_EVENTS) {
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CB_EVENTS) {
PAPI_ADD_EVENT(DC_L2_REFILL_MOES);
PAPI_ADD_EVENT(DC_SYS_REFILL_MOES);
PAPI_ADD_EVENT(FR_BR_MIS);
+ } else {
+ PAPI_ADD_EVENT(PAPI_STL_ICY);
}
+
+ // We might also consider:
+ // PAPI_BR_MSP Conditional branch instructions mispredicted
+ // PAPI_RES_STL Cycles stalled on any resource
};
}
/* This function reports counters for GC and mutator */
-void
+static void
papi_report(long_long PapiCounters[])
{
- /* I need to improve formatting aesthetics */
+/* Report the value of a counter */
+#define PAPI_REPORT(EVENTSET,EVENT) \
+ { \
+ ullong_format_string(papi_counter(EVENTSET,EVENT),temp,rtsTrue/*commas*/); \
+ statsPrintf(" (" #EVENT ") : %s\n",temp); \
+ }
+
+/* Report the value of a counter as a percentage of another counter */
+#define PAPI_REPORT_PCT(EVENTSET,EVENT,EVENTTOT) \
+ statsPrintf(" (" #EVENT ") %% of (" #EVENTTOT ") : %.1f%%\n", \
+ papi_counter(EVENTSET,EVENT)*100.0/papi_counter(EVENTSET,EVENTTOT))
+
+ /* I need to improve formatting aesthetics */
PAPI_REPORT(PapiCounters,PAPI_TOT_INS);
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
+ if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
PAPI_REPORT(PapiCounters,FR_BR);
PAPI_REPORT(PapiCounters,FR_BR_MIS);
PAPI_REPORT_PCT(PapiCounters,FR_BR_MIS,FR_BR);
PAPI_REPORT_PCT(PapiCounters,FR_BR_MISCOMPARE,FR_BR);
}
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
+ else if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
PAPI_REPORT(PapiCounters,FR_DISPATCH_STALLS);
PAPI_REPORT(PapiCounters,FR_DISPATCH_STALLS_BR);
//PAPI_REPORT_PCT(PapiCounters,FR_DISPATCH_STALLS_BR,PAPI_TOT_CYC);
//PAPI_REPORT_PCT(PapiCounters,FR_DISPATCH_STALLS_FULL_LS,PAPI_TOT_CYC);
}
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
+ else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
PAPI_REPORT(PapiCounters,PAPI_L1_DCA);
PAPI_REPORT(PapiCounters,PAPI_L1_DCM);
PAPI_REPORT_PCT(PapiCounters,PAPI_L1_DCM,PAPI_L1_DCA);
}
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
+ else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
PAPI_REPORT(PapiCounters,PAPI_L2_DCA);
PAPI_REPORT(PapiCounters,PAPI_L2_DCM);
PAPI_REPORT_PCT(PapiCounters,PAPI_L2_DCM,PAPI_L2_DCA);
}
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CB_EVENTS) {
+ else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CB_EVENTS) {
PAPI_REPORT(PapiCounters,DC_L2_REFILL_MOES);
PAPI_REPORT(PapiCounters,DC_SYS_REFILL_MOES);
PAPI_REPORT(PapiCounters,FR_BR_MIS);
}
+ else {
+ PAPI_REPORT(PapiCounters,PAPI_STL_ICY);
+ }
}
-
+void
+papi_stats_report (void)
+{
+ statsPrintf(" -- CPU Mutator counters --\n");
+ papi_mut_cycles();
+ papi_report(MutatorCounters);
+
+ statsPrintf("\n -- CPU GC counters --\n");
+ papi_gc_cycles();
+ papi_report(GCCounters);
+}
+
+void
+papi_init_eventset (int *event_set)
+{
+ PAPI_register_thread();
+ PAPI_CHECK( PAPI_create_eventset(event_set));
+ papi_add_events(*event_set);
+}
void
-papi_init_eventsets(void)
+papi_init (void)
{
+ /* Initialise the performance tracking library */
+ int ver;
+ if ((ver = PAPI_library_init(PAPI_VER_CURRENT)) != PAPI_VER_CURRENT) {
+ if (ver > 0) {
+ errorBelch("PAPI_library_init: wrong version: %x", ver);
+ stg_exit(EXIT_FAILURE);
+ } else {
+ sysErrorBelch("PAPI_library_init");
+ stg_exit(EXIT_FAILURE);
+ }
+ }
- init_countable_events();
+#ifdef THREADED_RTS
+ {
+ int err;
+ if ((err = PAPI_thread_init(osThreadId)) < 0) {
+ barf("PAPI_thread_init: %d",err);
+ }
- /* One event set for the mutator and another for the GC */
- PAPI_CHECK( PAPI_create_eventset(&MutatorEvents));
- PAPI_CHECK( PAPI_create_eventset(&GCEvents));
+ initMutex(&papi_counter_mutex);
+ }
+#endif
- /* Both sets contain the same events */
- papi_add_events(MutatorEvents);
- papi_add_events(GCEvents);
+ init_countable_events();
+ papi_init_eventset(&MutatorEvents);
+ papi_init_eventset(&GCEvents);
}
/* Extract the value corresponding to an event */
-long_long
+static long_long
papi_counter(long_long values[],int event)
{
int i;
- for(i=0;i<N_PAPI_EVENTS;i++) {
+ for(i=0;i<n_papi_events;i++) {
if(papi_events[i].event_code==event) {
return values[i];
}
}
/* Add the events of papi_events into an event set */
-void
+static void
papi_add_events(int EventSet)
{
int i;
- for(i=0;i<N_PAPI_EVENTS;i++) {
+ for(i=0;i<n_papi_events;i++) {
if((papi_error=PAPI_add_event(EventSet,
papi_events[i].event_code))
!= PAPI_OK)
void
papi_start_mutator_count(void)
{
+ ACQUIRE_LOCK(&papi_counter_mutex);
PAPI_CHECK( PAPI_start(MutatorEvents));
start_mutator_cycles = PAPI_cycles();
+ RELEASE_LOCK(&papi_counter_mutex);
}
void
papi_stop_mutator_count(void)
{
+ ACQUIRE_LOCK(&papi_counter_mutex);
mutator_cycles += PAPI_cycles() - start_mutator_cycles;
PAPI_CHECK( PAPI_accum(MutatorEvents,MutatorCounters));
PAPI_CHECK( PAPI_stop(MutatorEvents,NULL));
+ RELEASE_LOCK(&papi_counter_mutex);
}
void
papi_start_gc_count(void)
{
- PAPI_CHECK( PAPI_start(GCEvents));
- start_gc_cycles = PAPI_cycles();
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_start(GCEvents));
+ start_gc_cycles = PAPI_cycles();
+ RELEASE_LOCK(&papi_counter_mutex);
}
void
papi_stop_gc_count(void)
{
- gc_cycles += PAPI_cycles() - start_gc_cycles;
- PAPI_CHECK( PAPI_accum(GCEvents,GCCounters));
- PAPI_CHECK( PAPI_stop(GCEvents,NULL));
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_accum(GCEvents,GCCounters));
+ PAPI_CHECK( PAPI_stop(GCEvents,NULL));
+ gc_cycles += PAPI_cycles() - start_gc_cycles;
+ RELEASE_LOCK(&papi_counter_mutex);
}
+void
+papi_thread_start_gc_count(int event_set)
+{
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_start(event_set));
+ RELEASE_LOCK(&papi_counter_mutex);
+}
+
+void
+papi_thread_stop_gc_count(int event_set)
+{
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_accum(event_set,GCCounters));
+ PAPI_CHECK( PAPI_stop(event_set,NULL));
+ RELEASE_LOCK(&papi_counter_mutex);
+}
+
#endif /* USE_PAPI */