dist/gprof/hist.c

83 /* Reads just the header part of histogram record into
92 read_histogram_header (histogram *record,
101   if (gmon_io_read_vma (ifp, &record->lowpc)
102       || gmon_io_read_vma (ifp, &record->highpc)
103       || gmon_io_read_32 (ifp, &record->num_bins)
114   n_hist_scale = (double)((record->highpc - record->lowpc) / sizeof (UNIT))
115     / record->num_bins;
175   histogram *record, *existing_record;
178   /* 1. Read the header and see if there's existing record for the
185       record = existing_record;
189       /* If this record overlaps, but does not completely match an existing
190 	 record, it's an error.  */
202       /* This is new record.  Add it to global array and allocate space for
208       record = &histograms[num_histograms];
211       record->sample = (int *) xmalloc (record->num_bins
212 					* sizeof (record->sample[0]));
213       memset (record->sample, 0, record->num_bins * sizeof (record->sample[0]));
216   /* 2. We have either a new record (with zeroed histogram data), or an existing
217      record with some data in the histogram already.  Read new data into the
218      record, adding hit counts.  */
222 	       (unsigned long) record->lowpc, (unsigned long) record->highpc,
223                record->num_bins));
225   for (i = 0; i < record->num_bins; ++i)
232 		   whoami, filename, i, record->num_bins);
235       record->sample[i] += bfd_get_16 (core_bfd, (bfd_byte *) & count[0]);
238 		   (unsigned long) (record->lowpc
239                                     + i * (record->highpc - record->lowpc)
240                                     / record->num_bins),
241 		   record->sample[i]));
257       histogram *record = &histograms[r];
262 	  || gmon_io_write_vma (ofp, record->lowpc)
263 	  || gmon_io_write_vma (ofp, record->highpc)
264 	  || gmon_io_write_32 (ofp, record->num_bins)
273       for (i = 0; i < record->num_bins; ++i)
275 	  bfd_put_16 (core_bfd, (bfd_vma) record->sample[i], (bfd_byte *) &count[0]);
726 /* Find and return exising histogram record having the same lowpc and
741 /* Given a PC, return histogram record which address range include this PC.
742    Return NULL if there's no such record.  */