X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gprof%2Fhist.c;h=55dc2007c4a39be086d7e2b579b50c70ca90cd7a;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=5cdbbbb06531101490b1cbbb044f932bcbe67935;hpb=e98fe4f7b54cbdf29aef9287bbb1bea8801dd05a;p=deliverable%2Fbinutils-gdb.git diff --git a/gprof/hist.c b/gprof/hist.c index 5cdbbbb065..55dc2007c4 100644 --- a/gprof/hist.c +++ b/gprof/hist.c @@ -1,40 +1,63 @@ -/* - * Histogram related operations. - */ -#include -#include "libiberty.h" +/* hist.c - Histogram related operations. + + Copyright (C) 1999-2020 Free Software Foundation, Inc. + + This file is part of GNU Binutils. + + 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 3 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., 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ + #include "gprof.h" +#include "libiberty.h" +#include "search_list.h" +#include "source.h" +#include "symtab.h" #include "corefile.h" #include "gmon_io.h" #include "gmon_out.h" #include "hist.h" -#include "symtab.h" #include "sym_ids.h" #include "utils.h" +#include "math.h" +#include "stdio.h" +#include "stdlib.h" #define UNITS_TO_CODE (offset_to_code / sizeof(UNIT)) -static void scale_and_align_entries PARAMS ((void)); +static void scale_and_align_entries (void); +static void print_header (int); +static void print_line (Sym *, double); +static int cmp_time (const PTR, const PTR); -/* declarations of automatically generated functions to output blurbs: */ -extern void flat_blurb PARAMS ((FILE * fp)); +/* Declarations of automatically generated functions to output blurbs. */ +extern void flat_blurb (FILE * fp); -bfd_vma s_lowpc; /* lowest address in .text */ -bfd_vma s_highpc = 0; /* highest address in .text */ -bfd_vma lowpc, highpc; /* same, but expressed in UNITs */ -int hist_num_bins = 0; /* number of histogram samples */ -int *hist_sample = 0; /* histogram samples (shorts in the file!) */ +static histogram *find_histogram (bfd_vma lowpc, bfd_vma highpc); +static histogram *find_histogram_for_pc (bfd_vma pc); + +histogram * histograms; +unsigned num_histograms; double hist_scale; -char hist_dimension[sizeof (((struct gmon_hist_hdr *) 0)->dimen) + 1] = - "seconds"; -char hist_dimension_abbrev = 's'; - -static double accum_time; /* accumulated time so far for print_line() */ -static double total_time; /* total time for all routines */ -/* - * Table of SI prefixes for powers of 10 (used to automatically - * scale some of the values in the flat profile). - */ +static char hist_dimension[16] = "seconds"; +static char hist_dimension_abbrev = 's'; + +static double accum_time; /* Accumulated time so far for print_line(). */ +static double total_time; /* Total time for all routines. */ + +/* Table of SI prefixes for powers of 10 (used to automatically + scale some of the values in the flat profile). */ const struct { char prefix; @@ -42,179 +65,231 @@ const struct } SItab[] = { - { - 'T', 1e-12 - } - , /* tera */ - { - 'G', 1e-09 - } - , /* giga */ - { - 'M', 1e-06 - } - , /* mega */ - { - 'K', 1e-03 - } - , /* kilo */ - { - ' ', 1e-00 - } - , - { - 'm', 1e+03 - } - , /* milli */ - { - 'u', 1e+06 - } - , /* micro */ - { - 'n', 1e+09 - } - , /* nano */ - { - 'p', 1e+12 - } - , /* pico */ - { - 'f', 1e+15 - } - , /* femto */ - { - 'a', 1e+18 - } - , /* ato */ + { 'T', 1e-12 }, /* tera */ + { 'G', 1e-09 }, /* giga */ + { 'M', 1e-06 }, /* mega */ + { 'K', 1e-03 }, /* kilo */ + { ' ', 1e-00 }, + { 'm', 1e+03 }, /* milli */ + { 'u', 1e+06 }, /* micro */ + { 'n', 1e+09 }, /* nano */ + { 'p', 1e+12 }, /* pico */ + { 'f', 1e+15 }, /* femto */ + { 'a', 1e+18 } /* ato */ }; -/* - * Read the histogram from file IFP. FILENAME is the name of IFP and - * is provided for formatting error messages only. - */ -void -DEFUN (hist_read_rec, (ifp, filename), FILE * ifp AND const char *filename) -{ - struct gmon_hist_hdr hdr; - bfd_vma n_lowpc, n_highpc; - int i, ncnt, profrate; - UNIT count; +/* Reads just the header part of histogram record into + *RECORD from IFP. FILENAME is the name of IFP and + is provided for formatting error messages only. - if (fread (&hdr, sizeof (hdr), 1, ifp) != 1) + If FIRST is non-zero, sets global variables HZ, HIST_DIMENSION, + HIST_DIMENSION_ABBREV, HIST_SCALE. If FIRST is zero, checks + that the new histogram is compatible with already-set values + of those variables and emits an error if that's not so. */ +static void +read_histogram_header (histogram *record, + FILE *ifp, const char *filename, + int first) +{ + unsigned int profrate; + char n_hist_dimension[15]; + char n_hist_dimension_abbrev; + double n_hist_scale; + + if (gmon_io_read_vma (ifp, &record->lowpc) + || gmon_io_read_vma (ifp, &record->highpc) + || gmon_io_read_32 (ifp, &record->num_bins) + || gmon_io_read_32 (ifp, &profrate) + || gmon_io_read (ifp, n_hist_dimension, 15) + || gmon_io_read (ifp, &n_hist_dimension_abbrev, 1)) { fprintf (stderr, _("%s: %s: unexpected end of file\n"), whoami, filename); + done (1); } - n_lowpc = (bfd_vma) get_vma (core_bfd, (bfd_byte *) hdr.low_pc); - n_highpc = (bfd_vma) get_vma (core_bfd, (bfd_byte *) hdr.high_pc); - ncnt = bfd_get_32 (core_bfd, (bfd_byte *) hdr.hist_size); - profrate = bfd_get_32 (core_bfd, (bfd_byte *) hdr.prof_rate); - strncpy (hist_dimension, hdr.dimen, sizeof (hdr.dimen)); - hist_dimension[sizeof (hdr.dimen)] = '\0'; - hist_dimension_abbrev = hdr.dimen_abbrev; + n_hist_scale = (double)((record->highpc - record->lowpc) / sizeof (UNIT)) + / record->num_bins; - if (!s_highpc) + if (first) { + /* We don't try to veryfy profrate is the same for all histogram + records. If we have two histogram records for the same + address range and profiling samples is done as often + as possible as opposed on timer, then the actual profrate will + be slightly different. Most of the time the difference does not + matter and insisting that profiling rate is exactly the same + will only create inconvenient. */ + hz = profrate; + memcpy (hist_dimension, n_hist_dimension, 15); + hist_dimension_abbrev = n_hist_dimension_abbrev; + hist_scale = n_hist_scale; + } + else + { + if (strncmp (n_hist_dimension, hist_dimension, 15) != 0) + { + fprintf (stderr, + _("%s: dimension unit changed between histogram records\n" + "%s: from '%s'\n" + "%s: to '%s'\n"), + whoami, whoami, hist_dimension, whoami, n_hist_dimension); + done (1); + } - /* this is the first histogram record: */ + if (n_hist_dimension_abbrev != hist_dimension_abbrev) + { + fprintf (stderr, + _("%s: dimension abbreviation changed between histogram records\n" + "%s: from '%c'\n" + "%s: to '%c'\n"), + whoami, whoami, hist_dimension_abbrev, whoami, n_hist_dimension_abbrev); + done (1); + } - s_lowpc = n_lowpc; - s_highpc = n_highpc; - lowpc = (bfd_vma) n_lowpc / sizeof (UNIT); - highpc = (bfd_vma) n_highpc / sizeof (UNIT); - hist_num_bins = ncnt; - hz = profrate; + /* The only reason we require the same scale for histograms is that + there's code (notably printing code), that prints units, + and it would be very confusing to have one unit mean different + things for different functions. */ + if (fabs (hist_scale - n_hist_scale) > 0.000001) + { + fprintf (stderr, + _("%s: different scales in histogram records"), + whoami); + done (1); + } } +} - DBG (SAMPLEDEBUG, - printf ("[hist_read_rec] n_lowpc 0x%lx n_highpc 0x%lx ncnt %d\n", - n_lowpc, n_highpc, ncnt); - printf ("[hist_read_rec] s_lowpc 0x%lx s_highpc 0x%lx nsamples %d\n", - s_lowpc, s_highpc, hist_num_bins); - printf ("[hist_read_rec] lowpc 0x%lx highpc 0x%lx\n", - lowpc, highpc)); - - if (n_lowpc != s_lowpc || n_highpc != s_highpc - || ncnt != hist_num_bins || hz != profrate) +/* Read the histogram from file IFP. FILENAME is the name of IFP and + is provided for formatting error messages only. */ + +void +hist_read_rec (FILE * ifp, const char *filename) +{ + bfd_vma lowpc, highpc; + histogram n_record; + histogram *record, *existing_record; + unsigned i; + + /* 1. Read the header and see if there's existing record for the + same address range and that there are no overlapping records. */ + read_histogram_header (&n_record, ifp, filename, num_histograms == 0); + + existing_record = find_histogram (n_record.lowpc, n_record.highpc); + if (existing_record) { - fprintf (stderr, _("%s: `%s' is incompatible with first gmon file\n"), - whoami, filename); - done (1); + record = existing_record; } - - if (!hist_sample) + else { - hist_sample = (int *) xmalloc (hist_num_bins * sizeof (hist_sample[0])); - memset (hist_sample, 0, hist_num_bins * sizeof (hist_sample[0])); + /* If this record overlaps, but does not completely match an existing + record, it's an error. */ + lowpc = n_record.lowpc; + highpc = n_record.highpc; + hist_clip_symbol_address (&lowpc, &highpc); + if (lowpc != highpc) + { + fprintf (stderr, + _("%s: overlapping histogram records\n"), + whoami); + done (1); + } + + /* This is new record. Add it to global array and allocate space for + the samples. */ + histograms = (struct histogram *) + xrealloc (histograms, sizeof (histogram) * (num_histograms + 1)); + memcpy (histograms + num_histograms, + &n_record, sizeof (histogram)); + record = &histograms[num_histograms]; + ++num_histograms; + + record->sample = (int *) xmalloc (record->num_bins + * sizeof (record->sample[0])); + memset (record->sample, 0, record->num_bins * sizeof (record->sample[0])); } - for (i = 0; i < hist_num_bins; ++i) + /* 2. We have either a new record (with zeroed histogram data), or an existing + record with some data in the histogram already. Read new data into the + record, adding hit counts. */ + + DBG (SAMPLEDEBUG, + printf ("[hist_read_rec] n_lowpc 0x%lx n_highpc 0x%lx ncnt %u\n", + (unsigned long) record->lowpc, (unsigned long) record->highpc, + record->num_bins)); + + for (i = 0; i < record->num_bins; ++i) { + UNIT count; if (fread (&count[0], sizeof (count), 1, ifp) != 1) { fprintf (stderr, - _("%s: %s: unexpected EOF after reading %d of %d samples\n"), - whoami, filename, i, hist_num_bins); + _("%s: %s: unexpected EOF after reading %u of %u samples\n"), + whoami, filename, i, record->num_bins); done (1); } - hist_sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) & count[0]); + record->sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) & count[0]); + DBG (SAMPLEDEBUG, + printf ("[hist_read_rec] 0x%lx: %u\n", + (unsigned long) (record->lowpc + + i * (record->highpc - record->lowpc) + / record->num_bins), + record->sample[i])); } } -/* - * Write execution histogram to file OFP. FILENAME is the name - * of OFP and is provided for formatting error-messages only. - */ +/* Write all execution histograms file OFP. FILENAME is the name + of OFP and is provided for formatting error-messages only. */ + void -DEFUN (hist_write_hist, (ofp, filename), FILE * ofp AND const char *filename) +hist_write_hist (FILE * ofp, const char *filename) { - struct gmon_hist_hdr hdr; - unsigned char tag; UNIT count; - int i; - - /* write header: */ + unsigned int i, r; - tag = GMON_TAG_TIME_HIST; - put_vma (core_bfd, s_lowpc, (bfd_byte *) hdr.low_pc); - put_vma (core_bfd, s_highpc, (bfd_byte *) hdr.high_pc); - bfd_put_32 (core_bfd, hist_num_bins, (bfd_byte *) hdr.hist_size); - bfd_put_32 (core_bfd, hz, (bfd_byte *) hdr.prof_rate); - strncpy (hdr.dimen, hist_dimension, sizeof (hdr.dimen)); - hdr.dimen_abbrev = hist_dimension_abbrev; - - if (fwrite (&tag, sizeof (tag), 1, ofp) != 1 - || fwrite (&hdr, sizeof (hdr), 1, ofp) != 1) + for (r = 0; r < num_histograms; ++r) { - perror (filename); - done (1); - } + histogram *record = &histograms[r]; - for (i = 0; i < hist_num_bins; ++i) - { - bfd_put_16 (core_bfd, hist_sample[i], (bfd_byte *) & count[0]); - if (fwrite (&count[0], sizeof (count), 1, ofp) != 1) + /* Write header. */ + + if (gmon_io_write_8 (ofp, GMON_TAG_TIME_HIST) + || gmon_io_write_vma (ofp, record->lowpc) + || gmon_io_write_vma (ofp, record->highpc) + || gmon_io_write_32 (ofp, record->num_bins) + || gmon_io_write_32 (ofp, hz) + || gmon_io_write (ofp, hist_dimension, 15) + || gmon_io_write (ofp, &hist_dimension_abbrev, 1)) { perror (filename); done (1); } + + for (i = 0; i < record->num_bins; ++i) + { + bfd_put_16 (core_bfd, (bfd_vma) record->sample[i], (bfd_byte *) &count[0]); + + if (fwrite (&count[0], sizeof (count), 1, ofp) != 1) + { + perror (filename); + done (1); + } + } } } +/* Calculate scaled entry point addresses (to save time in + hist_assign_samples), and, on architectures that have procedure + entry masks at the start of a function, possibly push the scaled + entry points over the procedure entry mask, if it turns out that + the entry point is in one bin and the code for a routine is in the + next bin. */ -/* - * Calculate scaled entry point addresses (to save time in - * hist_assign_samples), and, on architectures that have procedure - * entry masks at the start of a function, possibly push the scaled - * entry points over the procedure entry mask, if it turns out that - * the entry point is in one bin and the code for a routine is in the - * next bin. - */ static void -scale_and_align_entries () +scale_and_align_entries (void) { Sym *sym; bfd_vma bin_of_entry; @@ -222,132 +297,134 @@ scale_and_align_entries () for (sym = symtab.base; sym < symtab.limit; sym++) { + histogram *r = find_histogram_for_pc (sym->addr); + sym->hist.scaled_addr = sym->addr / sizeof (UNIT); - bin_of_entry = (sym->hist.scaled_addr - lowpc) / hist_scale; - bin_of_code = (sym->hist.scaled_addr + UNITS_TO_CODE - lowpc) / hist_scale; - if (bin_of_entry < bin_of_code) + + if (r) { - DBG (SAMPLEDEBUG, - printf ("[scale_and_align_entries] pushing 0x%lx to 0x%lx\n", - sym->hist.scaled_addr, - sym->hist.scaled_addr + UNITS_TO_CODE)); - sym->hist.scaled_addr += UNITS_TO_CODE; + bin_of_entry = (sym->hist.scaled_addr - r->lowpc) / hist_scale; + bin_of_code = ((sym->hist.scaled_addr + UNITS_TO_CODE - r->lowpc) + / hist_scale); + if (bin_of_entry < bin_of_code) + { + DBG (SAMPLEDEBUG, + printf ("[scale_and_align_entries] pushing 0x%lx to 0x%lx\n", + (unsigned long) sym->hist.scaled_addr, + (unsigned long) (sym->hist.scaled_addr + + UNITS_TO_CODE))); + sym->hist.scaled_addr += UNITS_TO_CODE; + } } } } -/* - * Assign samples to the symbol to which they belong. - * - * Histogram bin I covers some address range [BIN_LOWPC,BIN_HIGH_PC) - * which may overlap one more symbol address ranges. If a symbol - * overlaps with the bin's address range by O percent, then O percent - * of the bin's count is credited to that symbol. - * - * There are three cases as to where BIN_LOW_PC and BIN_HIGH_PC can be - * with respect to the symbol's address range [SYM_LOW_PC, - * SYM_HIGH_PC) as shown in the following diagram. OVERLAP computes - * the distance (in UNITs) between the arrows, the fraction of the - * sample that is to be credited to the symbol which starts at - * SYM_LOW_PC. - * - * sym_low_pc sym_high_pc - * | | - * v v - * - * +-----------------------------------------------+ - * | | - * | ->| |<- ->| |<- ->| |<- | - * | | | | | | - * +---------+ +---------+ +---------+ - * - * ^ ^ ^ ^ ^ ^ - * | | | | | | - * bin_low_pc bin_high_pc bin_low_pc bin_high_pc bin_low_pc bin_high_pc - * - * For the VAX we assert that samples will never fall in the first two - * bytes of any routine, since that is the entry mask, thus we call - * scale_and_align_entries() to adjust the entry points if the entry - * mask falls in one bin but the code for the routine doesn't start - * until the next bin. In conjunction with the alignment of routine - * addresses, this should allow us to have only one sample for every - * four bytes of text space and never have any overlap (the two end - * cases, above). - */ -void -DEFUN_VOID (hist_assign_samples) +/* Assign samples to the symbol to which they belong. + + Histogram bin I covers some address range [BIN_LOWPC,BIN_HIGH_PC) + which may overlap one more symbol address ranges. If a symbol + overlaps with the bin's address range by O percent, then O percent + of the bin's count is credited to that symbol. + + There are three cases as to where BIN_LOW_PC and BIN_HIGH_PC can be + with respect to the symbol's address range [SYM_LOW_PC, + SYM_HIGH_PC) as shown in the following diagram. OVERLAP computes + the distance (in UNITs) between the arrows, the fraction of the + sample that is to be credited to the symbol which starts at + SYM_LOW_PC. + + sym_low_pc sym_high_pc + | | + v v + + +-----------------------------------------------+ + | | + | ->| |<- ->| |<- ->| |<- | + | | | | | | + +---------+ +---------+ +---------+ + + ^ ^ ^ ^ ^ ^ + | | | | | | + bin_low_pc bin_high_pc bin_low_pc bin_high_pc bin_low_pc bin_high_pc + + For the VAX we assert that samples will never fall in the first two + bytes of any routine, since that is the entry mask, thus we call + scale_and_align_entries() to adjust the entry points if the entry + mask falls in one bin but the code for the routine doesn't start + until the next bin. In conjunction with the alignment of routine + addresses, this should allow us to have only one sample for every + four bytes of text space and never have any overlap (the two end + cases, above). */ + +static void +hist_assign_samples_1 (histogram *r) { bfd_vma bin_low_pc, bin_high_pc; bfd_vma sym_low_pc, sym_high_pc; bfd_vma overlap, addr; - int bin_count, i; - unsigned int j; - double time, credit; - - /* read samples and assign to symbols: */ - hist_scale = highpc - lowpc; - hist_scale /= hist_num_bins; - scale_and_align_entries (); + unsigned int bin_count; + unsigned int i, j, k; + double count_time, credit; - /* iterate over all sample bins: */ + bfd_vma lowpc = r->lowpc / sizeof (UNIT); - for (i = 0, j = 1; i < hist_num_bins; ++i) + /* Iterate over all sample bins. */ + for (i = 0, k = 1; i < r->num_bins; ++i) { - bin_count = hist_sample[i]; - if (!bin_count) - { - continue; - } + bin_count = r->sample[i]; + if (! bin_count) + continue; + bin_low_pc = lowpc + (bfd_vma) (hist_scale * i); bin_high_pc = lowpc + (bfd_vma) (hist_scale * (i + 1)); - time = bin_count; + count_time = bin_count; + DBG (SAMPLEDEBUG, printf ( - "[assign_samples] bin_low_pc=0x%lx, bin_high_pc=0x%lx, bin_count=%d\n", - sizeof (UNIT) * bin_low_pc, sizeof (UNIT) * bin_high_pc, + "[assign_samples] bin_low_pc=0x%lx, bin_high_pc=0x%lx, bin_count=%u\n", + (unsigned long) (sizeof (UNIT) * bin_low_pc), + (unsigned long) (sizeof (UNIT) * bin_high_pc), bin_count)); - total_time += time; + total_time += count_time; - /* credit all symbols that are covered by bin I: */ + /* Credit all symbols that are covered by bin I. - for (j = j - 1; j < symtab.len; ++j) + PR gprof/13325: Make sure that K does not get decremented + and J will never be less than 0. */ + for (j = k - 1; j < symtab.len; k = ++j) { sym_low_pc = symtab.base[j].hist.scaled_addr; sym_high_pc = symtab.base[j + 1].hist.scaled_addr; - /* - * If high end of bin is below entry address, go for next - * bin: - */ + + /* If high end of bin is below entry address, + go for next bin. */ if (bin_high_pc < sym_low_pc) - { - break; - } - /* - * If low end of bin is above high end of symbol, go for - * next symbol. - */ + break; + + /* If low end of bin is above high end of symbol, + go for next symbol. */ if (bin_low_pc >= sym_high_pc) - { - continue; - } + continue; + overlap = MIN (bin_high_pc, sym_high_pc) - MAX (bin_low_pc, sym_low_pc); if (overlap > 0) { DBG (SAMPLEDEBUG, printf ( - "[assign_samples] [0x%lx,0x%lx) %s gets %f ticks %ld overlap\n", - symtab.base[j].addr, sizeof (UNIT) * sym_high_pc, - symtab.base[j].name, overlap * time / hist_scale, - overlap)); + "[assign_samples] [0x%lx,0x%lx) %s gets %f ticks %ld overlap\n", + (unsigned long) symtab.base[j].addr, + (unsigned long) (sizeof (UNIT) * sym_high_pc), + symtab.base[j].name, overlap * count_time / hist_scale, + (long) overlap)); + addr = symtab.base[j].addr; - credit = overlap * time / hist_scale; - /* - * Credit symbol if it appears in INCL_FLAT or that - * table is empty and it does not appear it in - * EXCL_FLAT. - */ + credit = overlap * count_time / hist_scale; + + /* Credit symbol if it appears in INCL_FLAT or that + table is empty and it does not appear it in + EXCL_FLAT. */ if (sym_lookup (&syms[INCL_FLAT], addr) || (syms[INCL_FLAT].len == 0 && !sym_lookup (&syms[EXCL_FLAT], addr))) @@ -361,16 +438,28 @@ DEFUN_VOID (hist_assign_samples) } } } + DBG (SAMPLEDEBUG, printf ("[assign_samples] total_time %f\n", total_time)); } +/* Calls 'hist_assign_sampes_1' for all histogram records read so far. */ +void +hist_assign_samples (void) +{ + unsigned i; + + scale_and_align_entries (); + + for (i = 0; i < num_histograms; ++i) + hist_assign_samples_1 (&histograms[i]); + +} + +/* Print header for flag histogram profile. */ -/* - * Print header for flag histogram profile: - */ static void -DEFUN (print_header, (prefix), const char prefix) +print_header (int prefix) { char unit[64]; @@ -379,7 +468,7 @@ DEFUN (print_header, (prefix), const char prefix) if (bsd_style_output) { printf (_("\ngranularity: each sample hit covers %ld byte(s)"), - (long) hist_scale * sizeof (UNIT)); + (long) hist_scale * (long) sizeof (UNIT)); if (total_time > 0.0) { printf (_(" for %.2f%% of %.2f %s\n\n"), @@ -394,12 +483,14 @@ DEFUN (print_header, (prefix), const char prefix) if (total_time <= 0.0) { printf (_(" no time accumulated\n\n")); - /* this doesn't hurt since all the numerators will be zero: */ + + /* This doesn't hurt since all the numerators will be zero. */ total_time = 1.0; } printf ("%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s %-8.8s\n", - "% ", _("cumulative"), _("self "), "", _("self "), _("total "), ""); + "% ", _("cumulative"), _("self "), "", _("self "), _("total "), + ""); printf ("%5.5s %9.9s %8.8s %8.8s %8.8s %8.8s %-8.8s\n", _("time"), hist_dimension, hist_dimension, _("calls"), unit, unit, _("name")); @@ -407,105 +498,85 @@ DEFUN (print_header, (prefix), const char prefix) static void -DEFUN (print_line, (sym, scale), Sym * sym AND double scale) +print_line (Sym *sym, double scale) { if (ignore_zeros && sym->ncalls == 0 && sym->hist.time == 0) - { - return; - } + return; accum_time += sym->hist.time; + if (bsd_style_output) - { - printf ("%5.1f %10.2f %8.2f", - total_time > 0.0 ? 100 * sym->hist.time / total_time : 0.0, - accum_time / hz, sym->hist.time / hz); - } + printf ("%5.1f %10.2f %8.2f", + total_time > 0.0 ? 100 * sym->hist.time / total_time : 0.0, + accum_time / hz, sym->hist.time / hz); else - { - printf ("%6.2f %9.2f %8.2f", - total_time > 0.0 ? 100 * sym->hist.time / total_time : 0.0, - accum_time / hz, sym->hist.time / hz); - } + printf ("%6.2f %9.2f %8.2f", + total_time > 0.0 ? 100 * sym->hist.time / total_time : 0.0, + accum_time / hz, sym->hist.time / hz); + if (sym->ncalls != 0) - { - printf (" %8lu %8.2f %8.2f ", - sym->ncalls, scale * sym->hist.time / hz / sym->ncalls, - scale * (sym->hist.time + sym->cg.child_time) / hz / sym->ncalls); - } + printf (" %8lu %8.2f %8.2f ", + sym->ncalls, scale * sym->hist.time / hz / sym->ncalls, + scale * (sym->hist.time + sym->cg.child_time) / hz / sym->ncalls); else - { - printf (" %8.8s %8.8s %8.8s ", "", "", ""); - } + printf (" %8.8s %8.8s %8.8s ", "", "", ""); + if (bsd_style_output) - { - print_name (sym); - } + print_name (sym); else - { - print_name_only (sym); - } + print_name_only (sym); + printf ("\n"); } -/* - * Compare LP and RP. The primary comparison key is execution time, - * the secondary is number of invocation, and the tertiary is the - * lexicographic order of the function names. - */ +/* Compare LP and RP. The primary comparison key is execution time, + the secondary is number of invocation, and the tertiary is the + lexicographic order of the function names. */ + static int -DEFUN (cmp_time, (lp, rp), const PTR lp AND const PTR rp) +cmp_time (const PTR lp, const PTR rp) { const Sym *left = *(const Sym **) lp; const Sym *right = *(const Sym **) rp; double time_diff; time_diff = right->hist.time - left->hist.time; + if (time_diff > 0.0) - { - return 1; - } + return 1; + if (time_diff < 0.0) - { - return -1; - } + return -1; if (right->ncalls > left->ncalls) - { - return 1; - } + return 1; + if (right->ncalls < left->ncalls) - { - return -1; - } + return -1; return strcmp (left->name, right->name); } -/* - * Print the flat histogram profile. - */ +/* Print the flat histogram profile. */ + void -DEFUN_VOID (hist_print) +hist_print (void) { Sym **time_sorted_syms, *top_dog, *sym; - unsigned int index; - int log_scale; - double top_time, time; + unsigned int sym_index; + unsigned log_scale; + double top_time; bfd_vma addr; if (first_output) - { - first_output = FALSE; - } + first_output = FALSE; else - { - printf ("\f\n"); - } + printf ("\f\n"); accum_time = 0.0; + if (bsd_style_output) { if (print_descriptions) @@ -518,79 +589,166 @@ DEFUN_VOID (hist_print) { printf (_("Flat profile:\n")); } - /* - * Sort the symbol table by time (call-count and name as secondary - * and tertiary keys): - */ + + /* Sort the symbol table by time (call-count and name as secondary + and tertiary keys). */ time_sorted_syms = (Sym **) xmalloc (symtab.len * sizeof (Sym *)); - for (index = 0; index < symtab.len; ++index) - { - time_sorted_syms[index] = &symtab.base[index]; - } + + for (sym_index = 0; sym_index < symtab.len; ++sym_index) + time_sorted_syms[sym_index] = &symtab.base[sym_index]; + qsort (time_sorted_syms, symtab.len, sizeof (Sym *), cmp_time); if (bsd_style_output) { - log_scale = 5; /* milli-seconds is BSD-default */ + log_scale = 5; /* Milli-seconds is BSD-default. */ } else { - /* - * Search for symbol with highest per-call execution time and - * scale accordingly: - */ + /* Search for symbol with highest per-call + execution time and scale accordingly. */ log_scale = 0; top_dog = 0; top_time = 0.0; - for (index = 0; index < symtab.len; ++index) + + for (sym_index = 0; sym_index < symtab.len; ++sym_index) { - sym = time_sorted_syms[index]; + sym = time_sorted_syms[sym_index]; + if (sym->ncalls != 0) { - time = (sym->hist.time + sym->cg.child_time) / sym->ncalls; - if (time > top_time) + double call_time; + + call_time = (sym->hist.time + sym->cg.child_time) / sym->ncalls; + + if (call_time > top_time) { top_dog = sym; - top_time = time; + top_time = call_time; } } } + if (top_dog && top_dog->ncalls != 0 && top_time > 0.0) { top_time /= hz; - while (SItab[log_scale].scale * top_time < 1000.0 - && ((size_t) log_scale - < sizeof (SItab) / sizeof (SItab[0]) - 1)) + + for (log_scale = 0; log_scale < ARRAY_SIZE (SItab); log_scale ++) { - ++log_scale; + double scaled_value = SItab[log_scale].scale * top_time; + + if (scaled_value >= 1.0 && scaled_value < 1000.0) + break; } } } - /* - * For now, the dimension is always seconds. In the future, we - * may also want to support other (pseudo-)dimensions (such as - * I-cache misses etc.). - */ + /* For now, the dimension is always seconds. In the future, we + may also want to support other (pseudo-)dimensions (such as + I-cache misses etc.). */ print_header (SItab[log_scale].prefix); - for (index = 0; index < symtab.len; ++index) + + for (sym_index = 0; sym_index < symtab.len; ++sym_index) { - addr = time_sorted_syms[index]->addr; - /* - * Print symbol if its in INCL_FLAT table or that table - * is empty and the symbol is not in EXCL_FLAT. - */ + addr = time_sorted_syms[sym_index]->addr; + + /* Print symbol if its in INCL_FLAT table or that table + is empty and the symbol is not in EXCL_FLAT. */ if (sym_lookup (&syms[INCL_FLAT], addr) || (syms[INCL_FLAT].len == 0 && !sym_lookup (&syms[EXCL_FLAT], addr))) - { - print_line (time_sorted_syms[index], SItab[log_scale].scale); - } + print_line (time_sorted_syms[sym_index], SItab[log_scale].scale); } + free (time_sorted_syms); if (print_descriptions && !bsd_style_output) + flat_blurb (stdout); +} + +int +hist_check_address (unsigned address) +{ + unsigned i; + + for (i = 0; i < num_histograms; ++i) + if (histograms[i].lowpc <= address && address < histograms[i].highpc) + return 1; + + return 0; +} + +#if ! defined(min) +#define min(a,b) (((a)<(b)) ? (a) : (b)) +#endif +#if ! defined(max) +#define max(a,b) (((a)>(b)) ? (a) : (b)) +#endif + +void +hist_clip_symbol_address (bfd_vma *p_lowpc, bfd_vma *p_highpc) +{ + unsigned i; + int found = 0; + + if (num_histograms == 0) + { + *p_highpc = *p_lowpc; + return; + } + + for (i = 0; i < num_histograms; ++i) + { + bfd_vma common_low, common_high; + common_low = max (histograms[i].lowpc, *p_lowpc); + common_high = min (histograms[i].highpc, *p_highpc); + + if (common_low < common_high) + { + if (found) + { + fprintf (stderr, + _("%s: found a symbol that covers " + "several histogram records"), + whoami); + done (1); + } + + found = 1; + *p_lowpc = common_low; + *p_highpc = common_high; + } + } + + if (!found) + *p_highpc = *p_lowpc; +} + +/* Find and return exising histogram record having the same lowpc and + highpc as passed via the parameters. Return NULL if nothing is found. + The return value is valid until any new histogram is read. */ +static histogram * +find_histogram (bfd_vma lowpc, bfd_vma highpc) +{ + unsigned i; + for (i = 0; i < num_histograms; ++i) + { + if (histograms[i].lowpc == lowpc && histograms[i].highpc == highpc) + return &histograms[i]; + } + return 0; +} + +/* Given a PC, return histogram record which address range include this PC. + Return NULL if there's no such record. */ +static histogram * +find_histogram_for_pc (bfd_vma pc) +{ + unsigned i; + for (i = 0; i < num_histograms; ++i) { - flat_blurb (stdout); + if (histograms[i].lowpc <= pc && pc < histograms[i].highpc) + return &histograms[i]; } + return 0; }