1 /* -----------------------------------------------------------------------------
2 * $Id: ProfHeap.c,v 1.1 1999/09/15 13:46:28 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 */
37 initHeapProfiling(void)
39 if (! RtsFlags.ProfFlags.doHeapProfile) {
43 sprintf(prof_filename, "%.124s.hp", prog_argv[0]);
45 prof_file = fopen(prof_filename, "w");
46 if (prof_file == NULL) {
47 fprintf(stderr, "Can't open heap profiling log file %s\n",
52 fprintf(prof_file, "JOB \"%s\"\n", prog_argv[0]);
53 fprintf(prof_file, "DATE \"%s\"\n", time_str());
55 fprintf(prof_file, "SAMPLE_UNIT \"seconds\"\n");
56 fprintf(prof_file, "VALUE_UNIT \"bytes\"\n");
58 fprintf(prof_file, "BEGIN_SAMPLE 0.00\n");
59 fprintf(prof_file, "END_SAMPLE 0.00\n");
61 #ifdef DEBUG_HEAP_PROF
62 DEBUG_LoadSymbols(prog_argv[0]);
70 endHeapProfiling(void)
74 if (! RtsFlags.ProfFlags.doHeapProfile) {
78 seconds = mut_user_time();
79 fprintf(prof_file, "BEGIN_SAMPLE %0.2f\n", seconds);
80 fprintf(prof_file, "END_SAMPLE %0.2f\n", seconds);
84 #ifdef DEBUG_HEAP_PROF
85 /* -----------------------------------------------------------------------------
86 Hash table for symbols.
87 -------------------------------------------------------------------------- */
95 #define SYMBOL_HASH_SIZE 0x3fff
97 symbol_info symbol_hash[SYMBOL_HASH_SIZE];
102 return ((W_)ptr)>>4 & 0x3fff;
110 for (i=0; i < SYMBOL_HASH_SIZE; i++) {
111 symbol_hash[i].ptr = NULL;
116 lookup_symbol(void *addr)
118 nat orig_bucket = hash(addr);
121 bucket = orig_bucket;
122 while (bucket < SYMBOL_HASH_SIZE && symbol_hash[bucket].ptr != NULL) {
123 if (symbol_hash[bucket].ptr == addr) {
128 if (bucket == SYMBOL_HASH_SIZE) {
130 while (bucket < orig_bucket && symbol_hash[bucket].ptr != NULL) {
131 if (symbol_hash[bucket].ptr == addr) {
136 if (bucket == orig_bucket) {
137 barf("out of symbol table space");
141 symbol_hash[bucket].ptr = addr;
142 lookupGHCName(addr,&symbol_hash[bucket].name);
143 symbol_hash[bucket].data = 0;
148 clear_table_data(void)
152 for (i = 0; i < SYMBOL_HASH_SIZE; i++) {
153 symbol_hash[i].data = 0;
158 fprint_data(FILE *fp)
162 for (i = 0; i < SYMBOL_HASH_SIZE; i++) {
163 if (symbol_hash[i].data) {
164 fprintf(fp, " %s %d\n", symbol_hash[i].name, symbol_hash[i].data);
170 add_data(void *addr, nat data)
172 symbol_hash[lookup_symbol(addr)].data += data;
175 /* -----------------------------------------------------------------------------
176 Closure Type Profiling;
178 PROBABLY TOTALLY OUT OF DATE -- ToDo (SDM)
179 -------------------------------------------------------------------------- */
181 static nat closure_types[N_CLOSURE_TYPES];
183 static char *type_names[] = {
189 , "CONSTR_NOCAF_STATIC"
227 , "MUT_ARR_PTRS_FROZEN"
242 fprint_closure_types(FILE *fp)
246 for (i = 0; i < N_CLOSURE_TYPES; i++) {
247 if (closure_types[i]) {
248 fprintf(fp, " %s %d\n", type_names[i], closure_types[i]);
253 #endif /* DEBUG_HEAP_PROF */
258 clearCCSResid(CostCentreStack *ccs)
264 for (i = ccs->indexTable; i != 0; i = i->next) {
265 clearCCSResid(i->ccs);
270 fprint_ccs(FILE *fp, CostCentreStack *ccs, nat components)
273 CostCentreStack *prev;
276 prev = ccs->prevStack;
279 || prev->cc->is_subsumed != CC_IS_BORING
280 || components == 1) {
281 fprintf(fp,"%s",cc->label);
285 fprint_ccs(fp, ccs->prevStack,components-1);
286 fprintf(fp,"/%s",cc->label);
291 reportCCSResid(FILE *fp, CostCentreStack *ccs)
295 if (ccs->mem_resid != 0) {
297 fprint_ccs(fp,ccs,2/*print 2 components only*/);
298 fprintf(fp," %ld\n", ccs->mem_resid * sizeof(W_));
301 for (i = ccs->indexTable; i != 0; i = i->next) {
302 reportCCSResid(fp,i->ccs);
311 const StgInfoTable *info;
316 #ifdef DEBUG_HEAP_PROF
317 switch (RtsFlags.ProfFlags.doHeapProfile) {
318 case HEAP_BY_INFOPTR:
321 case HEAP_BY_CLOSURE_TYPE:
322 memset(closure_types, 0, N_CLOSURE_TYPES * sizeof(nat));
330 switch (RtsFlags.ProfFlags.doHeapProfile) {
331 case NO_HEAP_PROFILING:
336 barf("heapCensus; doHeapProfile");
338 /* zero all the residency counters */
339 clearCCSResid(CCS_MAIN);
342 /* Only do heap profiling in a two-space heap */
343 ASSERT(RtsFlags.GcFlags.generations == 1);
346 time = mut_user_time_during_GC();
347 fprintf(prof_file, "BEGIN_SAMPLE %0.2f\n", time);
351 while (p < bd->free) {
352 info = get_itbl((StgClosure *)p);
354 switch (info->type) {
356 size = bco_sizeW((StgBCO *)p);
360 if (((StgClosure *)p)->header.info == &DEAD_WEAK_info) {
361 size = sizeofW(StgWeak);
364 /* else, fall through... */
369 case IND_OLDGEN_PERM:
371 case SE_CAF_BLACKHOLE:
381 case CONSTR_CHARLIKE:
397 size = sizeW_fromITBL(info);
401 size = sizeofW(StgHeader) + MIN_UPD_SIZE;
404 case AP_UPD: /* we can treat this as being the same as a PAP */
406 size = pap_sizeW((StgPAP *)p);
410 size = arr_words_sizeW(stgCast(StgArrWords*,p));
414 case MUT_ARR_PTRS_FROZEN:
415 size = mut_arr_ptrs_sizeW((StgMutArrPtrs *)p);
419 size = tso_sizeW((StgTSO *)p);
426 #ifdef DEBUG_HEAP_PROF
427 switch (RtsFlags.ProfFlags.doHeapProfile) {
428 case HEAP_BY_INFOPTR:
429 add_data((void *)(*p), size * sizeof(W_));
431 case HEAP_BY_CLOSURE_TYPE:
432 closure_types[info->type] += size * sizeof(W_);
438 ((StgClosure *)p)->header.prof.ccs->mem_resid += size;
445 #ifdef DEBUG_HEAP_PROF
446 switch (RtsFlags.ProfFlags.doHeapProfile) {
447 case HEAP_BY_INFOPTR:
448 fprint_data(prof_file);
450 case HEAP_BY_CLOSURE_TYPE:
451 fprint_closure_types(prof_file);
457 reportCCSResid(prof_file,CCS_MAIN);
460 fprintf(prof_file, "END_SAMPLE %0.2f\n", time);
463 #endif /* PROFILING || DEBUG_HEAP_PROF */