libgcov.c
134 lines
| 4.5 KiB
| text/x-c
|
CLexer
/ libgcov / libgcov.c
r387 | /* Test for GCC >= 3.4.4 && <= 4.4.6 */ | |||
r388 | /*#if ( ( __GNUC__ > 3 ) || \ | |||
r387 | ( __GNUC__ == 3 && __GNUC_MINOR__ > 4 )|| \ | |||
( __GNUC__ == 3 && __GNUC_MINOR__ == 4 && __GNUC_PATCHLEVEL__ >= 4 ) ) && \ | ||||
( ( __GNUC__ < 4 ) || \ | ||||
( __GNUC__ == 4 && __GNUC_MINOR__ < 4 )|| \ | ||||
( __GNUC__ == 4 && __GNUC_MINOR__ == 4 && __GNUC_PATCHLEVEL__ <= 6 ) ) | ||||
r388 | */ | |||
r387 | /* Routines required for instrumenting a program. */ | |||
/* Compile this one with gcc. */ | ||||
/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, | ||||
2000, 2001, 2002, 2003 Free Software Foundation, Inc. | ||||
This file is part of GCC. | ||||
GCC 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 2, or (at your option) any later | ||||
version. | ||||
In addition to the permissions in the GNU General Public License, the | ||||
Free Software Foundation gives you unlimited permission to link the | ||||
compiled version of this file into combinations with other programs, | ||||
and to distribute those combinations without any restriction coming | ||||
from the use of this file. (The General Public License restrictions | ||||
do apply in other respects; for example, they cover modification of | ||||
the file, and distribution when not linked into a combine | ||||
executable.) | ||||
GCC 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 GCC; see the file COPYING. If not, write to the Free | ||||
Software Foundation, 59 Temple Place - Suite 330, Boston, MA | ||||
02111-1307, USA. */ | ||||
#define GCOV_LINKAGE /* nothing */ | ||||
#include "gcov-io.h" | ||||
/* Chain of per-object gcov structures. */ | ||||
struct gcov_info *gcov_list; | ||||
/* A program checksum allows us to distinguish program data for an | ||||
object file included in multiple programs. */ | ||||
gcov_unsigned_t gcov_crc32; | ||||
/* The profile merging function that just adds the counters. It is given | ||||
an array COUNTERS of N_COUNTERS old counters and it reads the same number | ||||
of counters from the gcov file. */ | ||||
void | ||||
__gcov_merge_add (gcov_type *counters, unsigned n_counters) | ||||
{ | ||||
for (; n_counters; counters++, n_counters--) | ||||
*counters += gcov_read_counter (); | ||||
} | ||||
/* The profile merging function for choosing the most common value. | ||||
It is given an array COUNTERS of N_COUNTERS old counters and it | ||||
reads the same number of counters from the gcov file. The counters | ||||
are split into 3-tuples where the members of the tuple have | ||||
meanings: | ||||
-- the stored candidate on the most common value of the measured entity | ||||
-- counter | ||||
-- total number of evaluations of the value */ | ||||
void | ||||
__gcov_merge_single (gcov_type *counters, unsigned n_counters) | ||||
{ | ||||
unsigned i, n_measures; | ||||
gcov_type value, counter, all; | ||||
GCOV_CHECK (!(n_counters % 3)); | ||||
n_measures = n_counters / 3; | ||||
for (i = 0; i < n_measures; i++, counters += 3) | ||||
{ | ||||
value = gcov_read_counter (); | ||||
counter = gcov_read_counter (); | ||||
all = gcov_read_counter (); | ||||
if (counters[0] == value) | ||||
counters[1] += counter; | ||||
else if (counter > counters[1]) | ||||
{ | ||||
counters[0] = value; | ||||
counters[1] = counter - counters[1]; | ||||
} | ||||
else | ||||
counters[1] -= counter; | ||||
counters[2] += all; | ||||
} | ||||
} | ||||
/* The profile merging function for choosing the most common | ||||
difference between two consecutive evaluations of the value. It is | ||||
given an array COUNTERS of N_COUNTERS old counters and it reads the | ||||
same number of counters from the gcov file. The counters are split | ||||
into 4-tuples where the members of the tuple have meanings: | ||||
-- the last value of the measured entity | ||||
-- the stored candidate on the most common difference | ||||
-- counter | ||||
-- total number of evaluations of the value */ | ||||
void | ||||
__gcov_merge_delta (gcov_type *counters, unsigned n_counters) | ||||
{ | ||||
unsigned i, n_measures; | ||||
gcov_type last, value, counter, all; | ||||
GCOV_CHECK (!(n_counters % 4)); | ||||
n_measures = n_counters / 4; | ||||
for (i = 0; i < n_measures; i++, counters += 4) | ||||
{ | ||||
last = gcov_read_counter (); | ||||
value = gcov_read_counter (); | ||||
counter = gcov_read_counter (); | ||||
all = gcov_read_counter (); | ||||
if (counters[1] == value) | ||||
counters[2] += counter; | ||||
else if (counter > counters[2]) | ||||
{ | ||||
counters[1] = value; | ||||
counters[2] = counter - counters[2]; | ||||
} | ||||
else | ||||
counters[2] -= counter; | ||||
counters[3] += all; | ||||
} | ||||
} | ||||
r388 | //#endif /* __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__ */ | |||