+++ /dev/null
-/* -----------------------------------------------------------------------------
- *
- * (c) The GHC Team, 1998-2005
- *
- * Statistics and timing-related functions.
- *
- * ---------------------------------------------------------------------------*/
-
-#include "Rts.h"
-#include "RtsFlags.h"
-#include "RtsUtils.h"
-#include "MBlock.h"
-#include "Schedule.h"
-#include "Stats.h"
-#include "ParTicky.h" /* ToDo: move into Rts.h */
-#include "Profiling.h"
-#include "Storage.h"
-#include "GetTime.h"
-
-/* huh? */
-#define BIG_STRING_LEN 512
-
-#define TICK_TO_DBL(t) ((double)(t) / TICKS_PER_SECOND)
-
-static Ticks ElapsedTimeStart = 0;
-
-static Ticks InitUserTime = 0;
-static Ticks InitElapsedTime = 0;
-static Ticks InitElapsedStamp = 0;
-
-static Ticks MutUserTime = 0;
-static Ticks MutElapsedTime = 0;
-static Ticks MutElapsedStamp = 0;
-
-static Ticks ExitUserTime = 0;
-static Ticks ExitElapsedTime = 0;
-
-static ullong GC_tot_alloc = 0;
-static ullong GC_tot_copied = 0;
-static ullong GC_tot_scavd_copied = 0;
-
-static Ticks GC_start_time = 0, GC_tot_time = 0; /* User GC Time */
-static Ticks GCe_start_time = 0, GCe_tot_time = 0; /* Elapsed GC time */
-
-#ifdef PROFILING
-static Ticks RP_start_time = 0, RP_tot_time = 0; /* retainer prof user time */
-static Ticks RPe_start_time = 0, RPe_tot_time = 0; /* retainer prof elap time */
-
-static Ticks HC_start_time, HC_tot_time = 0; // heap census prof user time
-static Ticks HCe_start_time, HCe_tot_time = 0; // heap census prof elap time
-#endif
-
-#ifdef PROFILING
-#define PROF_VAL(x) (x)
-#else
-#define PROF_VAL(x) 0
-#endif
-
-static lnat MaxResidency = 0; // in words; for stats only
-static lnat AvgResidency = 0;
-static lnat ResidencySamples = 0; // for stats only
-
-static lnat GC_start_faults = 0, GC_end_faults = 0;
-
-static Ticks *GC_coll_times;
-
-static void statsPrintf( char *s, ... )
- GNUC3_ATTRIBUTE(format (printf, 1, 2));
-
-static void statsFlush( void );
-static void statsClose( void );
-
-Ticks stat_getElapsedGCTime(void)
-{
- return GCe_tot_time;
-}
-
-/* mut_user_time_during_GC() and mut_user_time()
- *
- * The former function can be used to get the current mutator time
- * *during* a GC, i.e. between stat_startGC and stat_endGC. This is
- * used in the heap profiler for accurately time stamping the heap
- * sample.
- *
- * ATTENTION: mut_user_time_during_GC() relies on GC_start_time being
- * defined in stat_startGC() - to minimise system calls,
- * GC_start_time is, however, only defined when really needed (check
- * stat_startGC() for details)
- */
-double
-mut_user_time_during_GC( void )
-{
- return TICK_TO_DBL(GC_start_time - GC_tot_time - PROF_VAL(RP_tot_time + HC_tot_time));
-}
-
-double
-mut_user_time( void )
-{
- Ticks user;
- user = getProcessCPUTime();
- return TICK_TO_DBL(user - GC_tot_time - PROF_VAL(RP_tot_time + HC_tot_time));
-}
-
-#ifdef PROFILING
-/*
- mut_user_time_during_RP() is similar to mut_user_time_during_GC();
- it returns the MUT time during retainer profiling.
- The same is for mut_user_time_during_HC();
- */
-double
-mut_user_time_during_RP( void )
-{
- return TICK_TO_DBL(RP_start_time - GC_tot_time - RP_tot_time - HC_tot_time);
-}
-
-double
-mut_user_time_during_heap_census( void )
-{
- return TICK_TO_DBL(HC_start_time - GC_tot_time - RP_tot_time - HC_tot_time);
-}
-#endif /* PROFILING */
-
-void
-initStats(void)
-{
- nat i;
-
- if (RtsFlags.GcFlags.giveStats >= VERBOSE_GC_STATS) {
- statsPrintf(" Alloc Copied Live GC GC TOT TOT Page Flts\n");
- statsPrintf(" bytes bytes bytes user elap user elap\n");
- }
- GC_coll_times =
- (Ticks *)stgMallocBytes(
- sizeof(Ticks)*RtsFlags.GcFlags.generations,
- "initStats");
- for (i = 0; i < RtsFlags.GcFlags.generations; i++) {
- GC_coll_times[i] = 0;
- }
-}
-
-/* -----------------------------------------------------------------------------
- Initialisation time...
- -------------------------------------------------------------------------- */
-
-void
-stat_startInit(void)
-{
- Ticks elapsed;
-
- elapsed = getProcessElapsedTime();
- ElapsedTimeStart = elapsed;
-}
-
-void
-stat_endInit(void)
-{
- Ticks user, elapsed;
-
- getProcessTimes(&user, &elapsed);
-
- InitUserTime = user;
- InitElapsedStamp = elapsed;
- if (ElapsedTimeStart > elapsed) {
- InitElapsedTime = 0;
- } else {
- InitElapsedTime = elapsed - ElapsedTimeStart;
- }
-}
-
-/* -----------------------------------------------------------------------------
- stat_startExit and stat_endExit
-
- These two measure the time taken in shutdownHaskell().
- -------------------------------------------------------------------------- */
-
-void
-stat_startExit(void)
-{
- Ticks user, elapsed;
-
- getProcessTimes(&user, &elapsed);
-
- MutElapsedStamp = elapsed;
- MutElapsedTime = elapsed - GCe_tot_time -
- PROF_VAL(RPe_tot_time + HCe_tot_time) - InitElapsedStamp;
- if (MutElapsedTime < 0) { MutElapsedTime = 0; } /* sometimes -0.00 */
-
- MutUserTime = user - GC_tot_time - PROF_VAL(RP_tot_time + HC_tot_time) - InitUserTime;
- if (MutUserTime < 0) { MutUserTime = 0; }
-}
-
-void
-stat_endExit(void)
-{
- Ticks user, elapsed;
-
- getProcessTimes(&user, &elapsed);
-
- ExitUserTime = user - MutUserTime - GC_tot_time - PROF_VAL(RP_tot_time + HC_tot_time) - InitUserTime;
- ExitElapsedTime = elapsed - MutElapsedStamp;
- if (ExitUserTime < 0) {
- ExitUserTime = 0;
- }
- if (ExitElapsedTime < 0) {
- ExitElapsedTime = 0;
- }
-}
-
-/* -----------------------------------------------------------------------------
- Called at the beginning of each GC
- -------------------------------------------------------------------------- */
-
-static nat rub_bell = 0;
-
-/* initialise global variables needed during GC
- *
- * * GC_start_time is read in mut_user_time_during_GC(), which in turn is
- * needed if either PROFILING or DEBUGing is enabled
- */
-void
-stat_startGC(void)
-{
- nat bell = RtsFlags.GcFlags.ringBell;
-
- if (bell) {
- if (bell > 1) {
- debugBelch(" GC ");
- rub_bell = 1;
- } else {
- debugBelch("\007");
- }
- }
-
-#if defined(PROFILING) || defined(DEBUG)
- GC_start_time = getProcessCPUTime(); // needed in mut_user_time_during_GC()
-#endif
-
- if (RtsFlags.GcFlags.giveStats != NO_GC_STATS) {
-#if !defined(PROFILING) && !defined(DEBUG)
- GC_start_time = getProcessCPUTime();
-#endif
- GCe_start_time = getProcessElapsedTime();
- if (RtsFlags.GcFlags.giveStats) {
- GC_start_faults = getPageFaults();
- }
- }
-}
-
-/* -----------------------------------------------------------------------------
- Called at the end of each GC
- -------------------------------------------------------------------------- */
-
-void
-stat_endGC (lnat alloc, lnat live, lnat copied,
- lnat scavd_copied, lnat gen)
-{
- if (RtsFlags.GcFlags.giveStats != NO_GC_STATS) {
- Ticks time, etime, gc_time, gc_etime;
-
- getProcessTimes(&time, &etime);
- gc_time = time - GC_start_time;
- gc_etime = etime - GCe_start_time;
-
- if (RtsFlags.GcFlags.giveStats == VERBOSE_GC_STATS) {
- nat faults = getPageFaults();
-
- statsPrintf("%9ld %9ld %9ld",
- alloc*sizeof(W_), (copied+scavd_copied)*sizeof(W_),
- live*sizeof(W_));
- statsPrintf(" %5.2f %5.2f %7.2f %7.2f %4ld %4ld (Gen: %2ld)\n",
- TICK_TO_DBL(gc_time),
- TICK_TO_DBL(gc_etime),
- TICK_TO_DBL(time),
- TICK_TO_DBL(etime - ElapsedTimeStart),
- faults - GC_start_faults,
- GC_start_faults - GC_end_faults,
- gen);
-
- GC_end_faults = faults;
- statsFlush();
- }
-
- GC_coll_times[gen] += gc_time;
-
- GC_tot_copied += (ullong) copied;
- GC_tot_scavd_copied += (ullong) scavd_copied;
- GC_tot_alloc += (ullong) alloc;
- GC_tot_time += gc_time;
- GCe_tot_time += gc_etime;
-
-#if defined(THREADED_RTS)
- {
- Task *task;
- if ((task = myTask()) != NULL) {
- task->gc_time += gc_time;
- task->gc_etime += gc_etime;
- }
- }
-#endif
-
- if (gen == RtsFlags.GcFlags.generations-1) { /* major GC? */
- if (live > MaxResidency) {
- MaxResidency = live;
- }
- ResidencySamples++;
- AvgResidency += live;
- }
- }
-
- if (rub_bell) {
- debugBelch("\b\b\b \b\b\b");
- rub_bell = 0;
- }
-}
-
-/* -----------------------------------------------------------------------------
- Called at the beginning of each Retainer Profiliing
- -------------------------------------------------------------------------- */
-#ifdef PROFILING
-void
-stat_startRP(void)
-{
- Ticks user, elapsed;
- getProcessTimes( &user, &elapsed );
-
- RP_start_time = user;
- RPe_start_time = elapsed;
-}
-#endif /* PROFILING */
-
-/* -----------------------------------------------------------------------------
- Called at the end of each Retainer Profiliing
- -------------------------------------------------------------------------- */
-
-#ifdef PROFILING
-void
-stat_endRP(
- nat retainerGeneration,
-#ifdef DEBUG_RETAINER
- nat maxCStackSize,
- int maxStackSize,
-#endif
- double averageNumVisit)
-{
- Ticks user, elapsed;
- getProcessTimes( &user, &elapsed );
-
- RP_tot_time += user - RP_start_time;
- RPe_tot_time += elapsed - RPe_start_time;
-
- fprintf(prof_file, "Retainer Profiling: %d, at %f seconds\n",
- retainerGeneration, mut_user_time_during_RP());
-#ifdef DEBUG_RETAINER
- fprintf(prof_file, "\tMax C stack size = %u\n", maxCStackSize);
- fprintf(prof_file, "\tMax auxiliary stack size = %u\n", maxStackSize);
-#endif
- fprintf(prof_file, "\tAverage number of visits per object = %f\n", averageNumVisit);
-}
-#endif /* PROFILING */
-
-/* -----------------------------------------------------------------------------
- Called at the beginning of each heap census
- -------------------------------------------------------------------------- */
-#ifdef PROFILING
-void
-stat_startHeapCensus(void)
-{
- Ticks user, elapsed;
- getProcessTimes( &user, &elapsed );
-
- HC_start_time = user;
- HCe_start_time = elapsed;
-}
-#endif /* PROFILING */
-
-/* -----------------------------------------------------------------------------
- Called at the end of each heap census
- -------------------------------------------------------------------------- */
-#ifdef PROFILING
-void
-stat_endHeapCensus(void)
-{
- Ticks user, elapsed;
- getProcessTimes( &user, &elapsed );
-
- HC_tot_time += user - HC_start_time;
- HCe_tot_time += elapsed - HCe_start_time;
-}
-#endif /* PROFILING */
-
-/* -----------------------------------------------------------------------------
- Called at the end of execution
-
- NOTE: number of allocations is not entirely accurate: it doesn't
- take into account the few bytes at the end of the heap that
- were left unused when the heap-check failed.
- -------------------------------------------------------------------------- */
-
-void
-stat_exit(int alloc)
-{
- if (RtsFlags.GcFlags.giveStats != NO_GC_STATS) {
-
- char temp[BIG_STRING_LEN];
- Ticks time;
- Ticks etime;
- nat g, total_collections = 0;
-
- getProcessTimes( &time, &etime );
- etime -= ElapsedTimeStart;
-
- GC_tot_alloc += alloc;
-
- /* Count total garbage collections */
- for (g = 0; g < RtsFlags.GcFlags.generations; g++)
- total_collections += generations[g].collections;
-
- /* avoid divide by zero if time is measured as 0.00 seconds -- SDM */
- if (time == 0.0) time = 1;
- if (etime == 0.0) etime = 1;
-
- if (RtsFlags.GcFlags.giveStats >= VERBOSE_GC_STATS) {
- statsPrintf("%9ld %9.9s %9.9s", (lnat)alloc*sizeof(W_), "", "");
- statsPrintf(" %5.2f %5.2f\n\n", 0.0, 0.0);
- }
-
- if (RtsFlags.GcFlags.giveStats >= SUMMARY_GC_STATS) {
- ullong_format_string(GC_tot_alloc*sizeof(W_),
- temp, rtsTrue/*commas*/);
- statsPrintf("%11s bytes allocated in the heap\n", temp);
-
- ullong_format_string(GC_tot_copied*sizeof(W_),
- temp, rtsTrue/*commas*/);
- statsPrintf("%11s bytes copied during GC (scavenged)\n", temp);
-
- ullong_format_string(GC_tot_scavd_copied*sizeof(W_),
- temp, rtsTrue/*commas*/);
- statsPrintf("%11s bytes copied during GC (not scavenged)\n", temp);
-
- if ( ResidencySamples > 0 ) {
- ullong_format_string(MaxResidency*sizeof(W_),
- temp, rtsTrue/*commas*/);
- statsPrintf("%11s bytes maximum residency (%ld sample(s))\n",
- temp, ResidencySamples);
- }
- statsPrintf("\n");
-
- /* Print garbage collections in each gen */
- for (g = 0; g < RtsFlags.GcFlags.generations; g++) {
- statsPrintf("%11d collections in generation %d (%6.2fs)\n",
- generations[g].collections, g,
- TICK_TO_DBL(GC_coll_times[g]));
- }
-
- statsPrintf("\n%11ld Mb total memory in use\n\n",
- mblocks_allocated * MBLOCK_SIZE / (1024 * 1024));
-
-#if defined(THREADED_RTS)
- {
- nat i;
- Task *task;
- for (i = 0, task = all_tasks;
- task != NULL;
- i++, task = task->all_link) {
- statsPrintf(" Task %2d %-8s : MUT time: %6.2fs (%6.2fs elapsed)\n"
- " GC time: %6.2fs (%6.2fs elapsed)\n\n",
- i,
- (task->tso == NULL) ? "(worker)" : "(bound)",
- TICK_TO_DBL(task->mut_time),
- TICK_TO_DBL(task->mut_etime),
- TICK_TO_DBL(task->gc_time),
- TICK_TO_DBL(task->gc_etime));
- }
- }
-#endif
-
- statsPrintf(" INIT time %6.2fs (%6.2fs elapsed)\n",
- TICK_TO_DBL(InitUserTime), TICK_TO_DBL(InitElapsedTime));
- statsPrintf(" MUT time %6.2fs (%6.2fs elapsed)\n",
- TICK_TO_DBL(MutUserTime), TICK_TO_DBL(MutElapsedTime));
- statsPrintf(" GC time %6.2fs (%6.2fs elapsed)\n",
- TICK_TO_DBL(GC_tot_time), TICK_TO_DBL(GCe_tot_time));
-#ifdef PROFILING
- statsPrintf(" RP time %6.2fs (%6.2fs elapsed)\n",
- TICK_TO_DBL(RP_tot_time), TICK_TO_DBL(RPe_tot_time));
- statsPrintf(" PROF time %6.2fs (%6.2fs elapsed)\n",
- TICK_TO_DBL(HC_tot_time), TICK_TO_DBL(HCe_tot_time));
-#endif
- statsPrintf(" EXIT time %6.2fs (%6.2fs elapsed)\n",
- TICK_TO_DBL(ExitUserTime), TICK_TO_DBL(ExitElapsedTime));
- statsPrintf(" Total time %6.2fs (%6.2fs elapsed)\n\n",
- TICK_TO_DBL(time), TICK_TO_DBL(etime));
- statsPrintf(" %%GC time %5.1f%% (%.1f%% elapsed)\n\n",
- TICK_TO_DBL(GC_tot_time)*100/TICK_TO_DBL(time),
- TICK_TO_DBL(GCe_tot_time)*100/TICK_TO_DBL(etime));
-
- if (time - GC_tot_time - PROF_VAL(RP_tot_time + HC_tot_time) == 0)
- ullong_format_string(0, temp, rtsTrue/*commas*/);
- else
- ullong_format_string(
- (ullong)((GC_tot_alloc*sizeof(W_))/
- TICK_TO_DBL(time - GC_tot_time -
- PROF_VAL(RP_tot_time + HC_tot_time))),
- temp, rtsTrue/*commas*/);
-
- statsPrintf(" Alloc rate %s bytes per MUT second\n\n", temp);
-
- statsPrintf(" Productivity %5.1f%% of total user, %.1f%% of total elapsed\n\n",
- TICK_TO_DBL(time - GC_tot_time -
- PROF_VAL(RP_tot_time + HC_tot_time) - InitUserTime) * 100
- / TICK_TO_DBL(time),
- TICK_TO_DBL(time - GC_tot_time -
- PROF_VAL(RP_tot_time + HC_tot_time) - InitUserTime) * 100
- / TICK_TO_DBL(etime));
- }
-
- if (RtsFlags.GcFlags.giveStats == ONELINE_GC_STATS) {
- /* print the long long separately to avoid bugginess on mingwin (2001-07-02, mingw-0.5) */
- statsPrintf("<<ghc: %llu bytes, ", GC_tot_alloc*(ullong)sizeof(W_));
- statsPrintf("%d GCs, %ld/%ld avg/max bytes residency (%ld samples), %luM in use, %.2f INIT (%.2f elapsed), %.2f MUT (%.2f elapsed), %.2f GC (%.2f elapsed) :ghc>>\n",
- total_collections,
- ResidencySamples == 0 ? 0 :
- AvgResidency*sizeof(W_)/ResidencySamples,
- MaxResidency*sizeof(W_),
- ResidencySamples,
- (unsigned long)(mblocks_allocated * MBLOCK_SIZE / (1024L * 1024L)),
- TICK_TO_DBL(InitUserTime), TICK_TO_DBL(InitElapsedTime),
- TICK_TO_DBL(MutUserTime), TICK_TO_DBL(MutElapsedTime),
- TICK_TO_DBL(GC_tot_time), TICK_TO_DBL(GCe_tot_time));
- }
-
- statsFlush();
- statsClose();
- }
-}
-
-/* -----------------------------------------------------------------------------
- stat_describe_gens
-
- Produce some detailed info on the state of the generational GC.
- -------------------------------------------------------------------------- */
-#ifdef DEBUG
-void
-statDescribeGens(void)
-{
- nat g, s, mut, lge;
- lnat live;
- bdescr *bd;
- step *step;
-
- debugBelch(
-" Gen Steps Max Mutable Step Blocks Live Large\n"
-" Blocks Closures Objects\n");
-
- mut = 0;
- for (g = 0; g < RtsFlags.GcFlags.generations; g++) {
- for (bd = generations[g].mut_list; bd != NULL; bd = bd->link) {
- mut += bd->free - bd->start;
- }
-
- debugBelch("%8d %8d %8d %9d", g, generations[g].n_steps,
- generations[g].max_blocks, mut);
-
- for (s = 0; s < generations[g].n_steps; s++) {
- step = &generations[g].steps[s];
- live = 0;
- for (bd = step->large_objects, lge = 0; bd; bd = bd->link) {
- lge++;
- }
- live = step->n_large_blocks * BLOCK_SIZE;
- bd = step->blocks;
- // This live figure will be slightly less that the "live" figure
- // given by +RTS -Sstderr, because we take don't count the
- // slop at the end of each block.
- for (; bd; bd = bd->link) {
- live += (bd->free - bd->start) * sizeof(W_);
- }
- if (s != 0) {
- debugBelch("%36s","");
- }
- debugBelch("%6d %8d %8d %8d\n", s, step->n_blocks,
- live, lge);
- }
- }
- debugBelch("\n");
-}
-#endif
-
-/* -----------------------------------------------------------------------------
- Stats available via a programmatic interface, so eg. GHCi can time
- each compilation and expression evaluation.
- -------------------------------------------------------------------------- */
-
-extern HsInt64 getAllocations( void )
-{ return (HsInt64)total_allocated * sizeof(W_); }
-
-/* -----------------------------------------------------------------------------
- Dumping stuff in the stats file, or via the debug message interface
- -------------------------------------------------------------------------- */
-
-static void
-statsPrintf( char *s, ... )
-{
- FILE *sf = RtsFlags.GcFlags.statsFile;
- va_list ap;
-
- va_start(ap,s);
- if (sf == NULL) {
- vdebugBelch(s,ap);
- } else {
- vfprintf(sf, s, ap);
- }
- va_end(ap);
-}
-
-static void
-statsFlush( void )
-{
- FILE *sf = RtsFlags.GcFlags.statsFile;
- if (sf != NULL) {
- fflush(sf);
- }
-}
-
-static void
-statsClose( void )
-{
- FILE *sf = RtsFlags.GcFlags.statsFile;
- if (sf != NULL) {
- fclose(sf);
- }
-}
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