1 /* -----------------------------------------------------------------------------
2 * $Id: ProfHeap.c,v 1.3 2000/02/17 17:19:42 simonmar Exp $
4 * (c) The GHC Team, 1998-1999
6 * Support for heap profiling
8 * ---------------------------------------------------------------------------*/
10 #if defined(DEBUG) && !defined(PROFILING)
11 #define DEBUG_HEAP_PROF
13 #undef DEBUG_HEAP_PROF
16 #if defined(PROFILING) || defined(DEBUG_HEAP_PROF)
26 #ifdef DEBUG_HEAP_PROF
28 static void initSymbolHash(void);
29 static void clear_table_data(void);
30 static void fprint_data(FILE *fp);
33 char prof_filename[128]; /* urk */
36 #ifdef DEBUG_HEAP_PROF
37 void initProfiling( void )
42 void endProfiling( void )
46 #endif /* DEBUG_HEAP_PROF */
49 initHeapProfiling(void)
51 if (! RtsFlags.ProfFlags.doHeapProfile) {
55 fprintf(prof_file, "JOB \"%s\"\n", prog_argv[0]);
56 fprintf(prof_file, "DATE \"%s\"\n", time_str());
58 fprintf(prof_file, "SAMPLE_UNIT \"seconds\"\n");
59 fprintf(prof_file, "VALUE_UNIT \"bytes\"\n");
61 fprintf(prof_file, "BEGIN_SAMPLE 0.00\n");
62 fprintf(prof_file, "END_SAMPLE 0.00\n");
64 #ifdef DEBUG_HEAP_PROF
65 DEBUG_LoadSymbols(prog_argv[0]);
73 endHeapProfiling(void)
77 if (! RtsFlags.ProfFlags.doHeapProfile) {
81 seconds = mut_user_time();
82 fprintf(prof_file, "BEGIN_SAMPLE %0.2f\n", seconds);
83 fprintf(prof_file, "END_SAMPLE %0.2f\n", seconds);
87 #ifdef DEBUG_HEAP_PROF
88 /* -----------------------------------------------------------------------------
89 Hash table for symbols.
90 -------------------------------------------------------------------------- */
98 #define SYMBOL_HASH_SIZE 0x3fff
100 symbol_info symbol_hash[SYMBOL_HASH_SIZE];
105 return ((W_)ptr)>>4 & 0x3fff;
113 for (i=0; i < SYMBOL_HASH_SIZE; i++) {
114 symbol_hash[i].ptr = NULL;
119 lookup_symbol(void *addr)
121 nat orig_bucket = hash(addr);
124 bucket = orig_bucket;
125 while (bucket < SYMBOL_HASH_SIZE && symbol_hash[bucket].ptr != NULL) {
126 if (symbol_hash[bucket].ptr == addr) {
131 if (bucket == SYMBOL_HASH_SIZE) {
133 while (bucket < orig_bucket && symbol_hash[bucket].ptr != NULL) {
134 if (symbol_hash[bucket].ptr == addr) {
139 if (bucket == orig_bucket) {
140 barf("out of symbol table space");
144 symbol_hash[bucket].ptr = addr;
145 lookupGHCName(addr,&symbol_hash[bucket].name);
146 symbol_hash[bucket].data = 0;
151 clear_table_data(void)
155 for (i = 0; i < SYMBOL_HASH_SIZE; i++) {
156 symbol_hash[i].data = 0;
161 fprint_data(FILE *fp)
165 for (i = 0; i < SYMBOL_HASH_SIZE; i++) {
166 if (symbol_hash[i].data) {
167 fprintf(fp, " %s %d\n", symbol_hash[i].name, symbol_hash[i].data);
173 add_data(void *addr, nat data)
175 symbol_hash[lookup_symbol(addr)].data += data;
178 /* -----------------------------------------------------------------------------
179 Closure Type Profiling;
181 PROBABLY TOTALLY OUT OF DATE -- ToDo (SDM)
182 -------------------------------------------------------------------------- */
184 static nat closure_types[N_CLOSURE_TYPES];
186 static char *type_names[] = {
192 , "CONSTR_NOCAF_STATIC"
230 , "MUT_ARR_PTRS_FROZEN"
245 fprint_closure_types(FILE *fp)
249 for (i = 0; i < N_CLOSURE_TYPES; i++) {
250 if (closure_types[i]) {
251 fprintf(fp, " %s %d\n", type_names[i], closure_types[i]);
256 #endif /* DEBUG_HEAP_PROF */
261 clearCCSResid(CostCentreStack *ccs)
267 for (i = ccs->indexTable; i != 0; i = i->next) {
268 clearCCSResid(i->ccs);
273 fprint_ccs(FILE *fp, CostCentreStack *ccs, nat components)
276 CostCentreStack *prev;
279 prev = ccs->prevStack;
282 || prev->cc->is_subsumed != CC_IS_BORING
283 || components == 1) {
284 fprintf(fp,"%s",cc->label);
288 fprint_ccs(fp, ccs->prevStack,components-1);
289 fprintf(fp,"/%s",cc->label);
294 reportCCSResid(FILE *fp, CostCentreStack *ccs)
298 if (ccs->mem_resid != 0) {
300 fprint_ccs(fp,ccs,2/*print 2 components only*/);
301 fprintf(fp," %ld\n", ccs->mem_resid * sizeof(W_));
304 for (i = ccs->indexTable; i != 0; i = i->next) {
305 reportCCSResid(fp,i->ccs);
314 const StgInfoTable *info;
319 #ifdef DEBUG_HEAP_PROF
320 switch (RtsFlags.ProfFlags.doHeapProfile) {
321 case HEAP_BY_INFOPTR:
324 case HEAP_BY_CLOSURE_TYPE:
325 memset(closure_types, 0, N_CLOSURE_TYPES * sizeof(nat));
333 switch (RtsFlags.ProfFlags.doHeapProfile) {
334 case NO_HEAP_PROFILING:
339 barf("heapCensus; doHeapProfile");
341 /* zero all the residency counters */
342 clearCCSResid(CCS_MAIN);
345 /* Only do heap profiling in a two-space heap */
346 ASSERT(RtsFlags.GcFlags.generations == 1);
349 time = mut_user_time_during_GC();
350 fprintf(prof_file, "BEGIN_SAMPLE %0.2f\n", time);
354 while (p < bd->free) {
355 info = get_itbl((StgClosure *)p);
357 switch (info->type) {
359 size = bco_sizeW((StgBCO *)p);
363 if (((StgClosure *)p)->header.info == &DEAD_WEAK_info) {
364 size = sizeofW(StgWeak);
367 /* else, fall through... */
372 case IND_OLDGEN_PERM:
374 case SE_CAF_BLACKHOLE:
384 case CONSTR_CHARLIKE:
400 size = sizeW_fromITBL(info);
404 size = sizeofW(StgHeader) + MIN_UPD_SIZE;
407 case AP_UPD: /* we can treat this as being the same as a PAP */
409 size = pap_sizeW((StgPAP *)p);
413 size = arr_words_sizeW(stgCast(StgArrWords*,p));
417 case MUT_ARR_PTRS_FROZEN:
418 size = mut_arr_ptrs_sizeW((StgMutArrPtrs *)p);
422 size = tso_sizeW((StgTSO *)p);
429 #ifdef DEBUG_HEAP_PROF
430 switch (RtsFlags.ProfFlags.doHeapProfile) {
431 case HEAP_BY_INFOPTR:
432 add_data((void *)(*p), size * sizeof(W_));
434 case HEAP_BY_CLOSURE_TYPE:
435 closure_types[info->type] += size * sizeof(W_);
441 ((StgClosure *)p)->header.prof.ccs->mem_resid += size;
448 #ifdef DEBUG_HEAP_PROF
449 switch (RtsFlags.ProfFlags.doHeapProfile) {
450 case HEAP_BY_INFOPTR:
451 fprint_data(prof_file);
453 case HEAP_BY_CLOSURE_TYPE:
454 fprint_closure_types(prof_file);
460 reportCCSResid(prof_file,CCS_MAIN);
463 fprintf(prof_file, "END_SAMPLE %0.2f\n", time);
466 #endif /* PROFILING || DEBUG_HEAP_PROF */