/* Gcov.c: prepend line execution counts and branch probabilities to a
source file.
- Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
- Free Software Foundation, Inc.
+ Copyright (C) 1990-2016 Free Software Foundation, Inc.
Contributed by James E. Wilson of Cygnus Support.
Mangled by Bob Manson of Cygnus Support.
Mangled further by Nathan Sidwell <nathan@codesourcery.com>
#include "intl.h"
#include "diagnostic.h"
#include "version.h"
+#include "demangle.h"
#include <getopt.h>
/* The code validates that the profile information read in corresponds
to the code currently being compiled. Rather than checking for
- identical files, the code below computes a checksum on the CFG
+ identical files, the code below compares a checksum on the CFG
(based on the order of basic blocks and the arcs in the CFG). If
- the CFG checksum in the gcda file match the CFG checksum for the
- code currently being compiled, the profile data will be used. */
+ the CFG checksum in the gcda file match the CFG checksum in the
+ gcno file, the profile data will be used. */
/* This is the size of the buffer used to read in source file lines. */
{
/* Name of function. */
char *name;
+ char *demangled_name;
unsigned ident;
unsigned lineno_checksum;
unsigned cfg_checksum;
/* The graph contains at least one fake incoming edge. */
unsigned has_catch : 1;
- /* Array of basic blocks. */
+ /* Array of basic blocks. Like in GCC, the entry block is
+ at blocks[0] and the exit block is at blocks[1]. */
+#define ENTRY_BLOCK (0)
+#define EXIT_BLOCK (1)
block_t *blocks;
unsigned num_blocks;
unsigned blocks_executed;
static time_t bbg_file_time;
-/* Name and file pointer of the input file for the basic block graph. */
+/* Name of the notes (gcno) output file. The "bbg" prefix is for
+ historical reasons, when the notes file contained only the
+ basic block graph notes. */
static char *bbg_file_name;
/* Stamp of the bbg file */
static unsigned bbg_stamp;
-/* Name and file pointer of the input file for the arc count data. */
+/* Name and file pointer of the input file for the count data (gcda). */
static char *da_file_name;
static int flag_display_progress = 0;
+/* Output *.gcov file in intermediate format used by 'lcov'. */
+
+static int flag_intermediate_format = 0;
+
+/* Output demangled function names. */
+
+static int flag_demangled_names = 0;
+
/* For included files, make the gcov output file name include the name
of the input source file. For example, if x.h is included in a.c,
then the output file name is a.c##x.h.gcov instead of x.h.gcov. */
static void function_summary (const coverage_t *, const char *);
static const char *format_gcov (gcov_type, gcov_type, int);
static void accumulate_line_counts (source_t *);
+static void output_gcov_file (const char *, source_t *);
static int output_branch_count (FILE *, int, const arc_t *);
static void output_lines (FILE *, const source_t *);
static char *make_gcov_file_name (const char *, const char *);
for (; argno != argc; argno++)
{
if (flag_display_progress)
- printf("Processing file %d out of %d\n",
- argno - first_arg + 1, argc - first_arg);
+ printf ("Processing file %d out of %d\n",
+ argno - first_arg + 1, argc - first_arg);
process_file (argv[argno]);
}
fnotice (file, "Usage: gcov [OPTION]... SOURCE|OBJ...\n\n");
fnotice (file, "Print code coverage information.\n\n");
fnotice (file, " -h, --help Print this help, then exit\n");
- fnotice (file, " -v, --version Print version number, then exit\n");
fnotice (file, " -a, --all-blocks Show information for every basic block\n");
fnotice (file, " -b, --branch-probabilities Include branch probabilities in output\n");
- fnotice (file, " -c, --branch-counts Given counts of branches taken\n\
+ fnotice (file, " -c, --branch-counts Output counts of branches taken\n\
rather than percentages\n");
- fnotice (file, " -n, --no-output Do not create an output file\n");
+ fnotice (file, " -d, --display-progress Display progress information\n");
+ fnotice (file, " -f, --function-summaries Output summaries for each function\n");
+ fnotice (file, " -i, --intermediate-format Output .gcov file in intermediate text format\n");
fnotice (file, " -l, --long-file-names Use long output file names for included\n\
source files\n");
- fnotice (file, " -f, --function-summaries Output summaries for each function\n");
+ fnotice (file, " -m, --demangled-names Output demangled function names\n");
+ fnotice (file, " -n, --no-output Do not create an output file\n");
fnotice (file, " -o, --object-directory DIR|FILE Search for object files in DIR or called FILE\n");
- fnotice (file, " -s, --source-prefix DIR Source prefix to elide\n");
- fnotice (file, " -r, --relative-only Only show data for relative sources\n");
fnotice (file, " -p, --preserve-paths Preserve all pathname components\n");
+ fnotice (file, " -r, --relative-only Only show data for relative sources\n");
+ fnotice (file, " -s, --source-prefix DIR Source prefix to elide\n");
fnotice (file, " -u, --unconditional-branches Show unconditional branch counts too\n");
- fnotice (file, " -d, --display-progress Display progress information\n");
+ fnotice (file, " -v, --version Print version number, then exit\n");
fnotice (file, "\nFor bug reporting instructions, please see:\n%s.\n",
bug_report_url);
exit (status);
print_version (void)
{
fnotice (stdout, "gcov %s%s\n", pkgversion_string, version_string);
- fprintf (stdout, "Copyright %s 2012 Free Software Foundation, Inc.\n",
+ fprintf (stdout, "Copyright %s 2016 Free Software Foundation, Inc.\n",
_("(C)"));
fnotice (stdout,
_("This is free software; see the source for copying conditions.\n"
{ "all-blocks", no_argument, NULL, 'a' },
{ "branch-probabilities", no_argument, NULL, 'b' },
{ "branch-counts", no_argument, NULL, 'c' },
+ { "intermediate-format", no_argument, NULL, 'i' },
{ "no-output", no_argument, NULL, 'n' },
{ "long-file-names", no_argument, NULL, 'l' },
{ "function-summaries", no_argument, NULL, 'f' },
+ { "demangled-names", no_argument, NULL, 'm' },
{ "preserve-paths", no_argument, NULL, 'p' },
{ "relative-only", no_argument, NULL, 'r' },
{ "object-directory", required_argument, NULL, 'o' },
{
int opt;
- while ((opt = getopt_long (argc, argv, "abcdfhlno:s:pruv", options, NULL)) != -1)
+ while ((opt = getopt_long (argc, argv, "abcdfhilmno:s:pruv", options, NULL)) !=
+ -1)
{
switch (opt)
{
case 'l':
flag_long_names = 1;
break;
+ case 'm':
+ flag_demangled_names = 1;
+ break;
case 'n':
flag_gcov_file = 0;
break;
case 'u':
flag_unconditional = 1;
break;
+ case 'i':
+ flag_intermediate_format = 1;
+ flag_gcov_file = 1;
+ break;
case 'd':
flag_display_progress = 1;
break;
return optind;
}
+/* Get the name of the gcov file. The return value must be free'd.
+
+ It appends the '.gcov' extension to the *basename* of the file.
+ The resulting file name will be in PWD.
+
+ e.g.,
+ input: foo.da, output: foo.da.gcov
+ input: a/b/foo.cc, output: foo.cc.gcov */
+
+static char *
+get_gcov_intermediate_filename (const char *file_name)
+{
+ const char *gcov = ".gcov";
+ char *result;
+ const char *cptr;
+
+ /* Find the 'basename'. */
+ cptr = lbasename (file_name);
+
+ result = XNEWVEC (char, strlen (cptr) + strlen (gcov) + 1);
+ sprintf (result, "%s%s", cptr, gcov);
+
+ return result;
+}
+
+/* Output the result in intermediate format used by 'lcov'.
+
+The intermediate format contains a single file named 'foo.cc.gcov',
+with no source code included. A sample output is
+
+file:foo.cc
+function:5,1,_Z3foov
+function:13,1,main
+function:19,1,_GLOBAL__sub_I__Z3foov
+function:19,1,_Z41__static_initialization_and_destruction_0ii
+lcount:5,1
+lcount:7,9
+lcount:9,8
+lcount:11,1
+file:/.../iostream
+lcount:74,1
+file:/.../basic_ios.h
+file:/.../ostream
+file:/.../ios_base.h
+function:157,0,_ZStorSt12_Ios_IostateS_
+lcount:157,0
+file:/.../char_traits.h
+function:258,0,_ZNSt11char_traitsIcE6lengthEPKc
+lcount:258,0
+...
+
+The default gcov outputs multiple files: 'foo.cc.gcov',
+'iostream.gcov', 'ios_base.h.gcov', etc. with source code
+included. Instead the intermediate format here outputs only a single
+file 'foo.cc.gcov' similar to the above example. */
+
+static void
+output_intermediate_file (FILE *gcov_file, source_t *src)
+{
+ unsigned line_num; /* current line number. */
+ const line_t *line; /* current line info ptr. */
+ function_t *fn; /* current function info ptr. */
+
+ fprintf (gcov_file, "file:%s\n", src->name); /* source file name */
+
+ for (fn = src->functions; fn; fn = fn->line_next)
+ {
+ /* function:<name>,<line_number>,<execution_count> */
+ fprintf (gcov_file, "function:%d,%s,%s\n", fn->line,
+ format_gcov (fn->blocks[0].count, 0, -1),
+ flag_demangled_names ? fn->demangled_name : fn->name);
+ }
+
+ for (line_num = 1, line = &src->lines[line_num];
+ line_num < src->num_lines;
+ line_num++, line++)
+ {
+ arc_t *arc;
+ if (line->exists)
+ fprintf (gcov_file, "lcount:%u,%s\n", line_num,
+ format_gcov (line->count, 0, -1));
+ if (flag_branches)
+ for (arc = line->u.branches; arc; arc = arc->line_next)
+ {
+ if (!arc->is_unconditional && !arc->is_call_non_return)
+ {
+ const char *branch_type;
+ /* branch:<line_num>,<branch_coverage_type>
+ branch_coverage_type
+ : notexec (Branch not executed)
+ : taken (Branch executed and taken)
+ : nottaken (Branch executed, but not taken)
+ */
+ if (arc->src->count)
+ branch_type = (arc->count > 0) ? "taken" : "nottaken";
+ else
+ branch_type = "notexec";
+ fprintf (gcov_file, "branch:%d,%s\n", line_num, branch_type);
+ }
+ }
+ }
+}
+
+
/* Process a single input file. */
static void
}
}
+static void
+output_gcov_file (const char *file_name, source_t *src)
+{
+ char *gcov_file_name = make_gcov_file_name (file_name, src->coverage.name);
+
+ if (src->coverage.lines)
+ {
+ FILE *gcov_file = fopen (gcov_file_name, "w");
+ if (gcov_file)
+ {
+ fnotice (stdout, "Creating '%s'\n", gcov_file_name);
+ output_lines (gcov_file, src);
+ if (ferror (gcov_file))
+ fnotice (stderr, "Error writing output file '%s'\n", gcov_file_name);
+ fclose (gcov_file);
+ }
+ else
+ fnotice (stderr, "Could not open output file '%s'\n", gcov_file_name);
+ }
+ else
+ {
+ unlink (gcov_file_name);
+ fnotice (stdout, "Removing '%s'\n", gcov_file_name);
+ }
+ free (gcov_file_name);
+}
+
static void
generate_results (const char *file_name)
{
unsigned ix;
source_t *src;
function_t *fn;
+ FILE *gcov_intermediate_file = NULL;
+ char *gcov_intermediate_filename = NULL;
for (ix = n_sources, src = sources; ix--; src++)
if (src->num_lines)
coverage_t coverage;
memset (&coverage, 0, sizeof (coverage));
- coverage.name = fn->name;
+ coverage.name = flag_demangled_names ? fn->demangled_name : fn->name;
add_line_counts (flag_function_summary ? &coverage : NULL, fn);
if (flag_function_summary)
{
else
file_name = canonicalize_name (file_name);
}
-
+
+ if (flag_gcov_file && flag_intermediate_format)
+ {
+ /* Open the intermediate file. */
+ gcov_intermediate_filename =
+ get_gcov_intermediate_filename (file_name);
+ gcov_intermediate_file = fopen (gcov_intermediate_filename, "w");
+ if (!gcov_intermediate_file)
+ {
+ fnotice (stderr, "Cannot open intermediate output file %s\n",
+ gcov_intermediate_filename);
+ return;
+ }
+ }
+
for (ix = n_sources, src = sources; ix--; src++)
{
if (flag_relative_only)
total_executed += src->coverage.lines_executed;
if (flag_gcov_file)
{
- char *gcov_file_name
- = make_gcov_file_name (file_name, src->coverage.name);
-
- if (src->coverage.lines)
- {
- FILE *gcov_file = fopen (gcov_file_name, "w");
+ if (flag_intermediate_format)
+ /* Output the intermediate format without requiring source
+ files. This outputs a section to a *single* file. */
+ output_intermediate_file (gcov_intermediate_file, src);
+ else
+ output_gcov_file (file_name, src);
+ fnotice (stdout, "\n");
+ }
+ }
- if (gcov_file)
- {
- fnotice (stdout, "Creating '%s'\n", gcov_file_name);
- output_lines (gcov_file, src);
- if (ferror (gcov_file))
- fnotice (stderr, "Error writing output file '%s'\n",
- gcov_file_name);
- fclose (gcov_file);
- }
- else
- fnotice (stderr, "Could not open output file '%s'\n",
- gcov_file_name);
- }
- else
- {
- unlink (gcov_file_name);
- fnotice (stdout, "Removing '%s'\n", gcov_file_name);
- }
- free (gcov_file_name);
- }
- fnotice (stdout, "\n");
+ if (flag_gcov_file && flag_intermediate_format)
+ {
+ /* Now we've finished writing the intermediate file. */
+ fclose (gcov_intermediate_file);
+ XDELETEVEC (gcov_intermediate_filename);
}
if (!file_name)
}
free (fn->blocks);
free (fn->counts);
+ if (flag_demangled_names && fn->demangled_name != fn->name)
+ free (fn->demangled_name);
+ free (fn->name);
}
/* Release all memory used. */
}
/* Remove the extension. */
- cptr = strrchr (name, '.');
+ cptr = strrchr (CONST_CAST (char *, lbasename (name)), '.');
if (cptr)
*cptr = 0;
{
static int info_emitted;
- fnotice (stderr, "%s:source file is newer than graph file '%s'\n",
+ fnotice (stderr, "%s:source file is newer than notes file '%s'\n",
file_name, bbg_file_name);
if (!info_emitted)
{
fnotice (stderr,
- "(the message is only displayed one per source file)\n");
+ "(the message is displayed only once per source file)\n");
info_emitted = 1;
}
sources[idx].file_time = 0;
return idx;
}
-/* Read the graph file. Return list of functions read -- in reverse order. */
+/* Read the notes file. Return list of functions read -- in reverse order. */
static function_t *
read_graph_file (void)
if (!gcov_open (bbg_file_name, 1))
{
- fnotice (stderr, "%s:cannot open graph file\n", bbg_file_name);
+ fnotice (stderr, "%s:cannot open notes file\n", bbg_file_name);
return fns;
}
bbg_file_time = gcov_time ();
if (!gcov_magic (gcov_read_unsigned (), GCOV_NOTE_MAGIC))
{
- fnotice (stderr, "%s:not a gcov graph file\n", bbg_file_name);
+ fnotice (stderr, "%s:not a gcov notes file\n", bbg_file_name);
gcov_close ();
return fns;
}
fn = XCNEW (function_t);
fn->name = function_name;
+ if (flag_demangled_names)
+ {
+ fn->demangled_name = cplus_demangle (fn->name, DMGL_PARAMS);
+ if (!fn->demangled_name)
+ fn->demangled_name = fn->name;
+ }
fn->ident = ident;
fn->lineno_checksum = lineno_checksum;
fn->cfg_checksum = cfg_checksum;
tag = gcov_read_unsigned ();
if (tag != bbg_stamp)
{
- fnotice (stderr, "%s:stamp mismatch with graph file\n", da_file_name);
+ fnotice (stderr, "%s:stamp mismatch with notes file\n", da_file_name);
goto cleanup;
}
bbg_file_name, fn->name);
else
{
- if (fn->blocks[0].num_pred)
+ if (fn->blocks[ENTRY_BLOCK].num_pred)
fnotice (stderr, "%s:'%s' has arcs to entry block\n",
bbg_file_name, fn->name);
else
/* We can't deduce the entry block counts from the lack of
predecessors. */
- fn->blocks[0].num_pred = ~(unsigned)0;
+ fn->blocks[ENTRY_BLOCK].num_pred = ~(unsigned)0;
- if (fn->blocks[fn->num_blocks - 1].num_succ)
+ if (fn->blocks[EXIT_BLOCK].num_succ)
fnotice (stderr, "%s:'%s' has arcs from exit block\n",
bbg_file_name, fn->name);
else
/* Likewise, we can't deduce exit block counts from the lack
of its successors. */
- fn->blocks[fn->num_blocks - 1].num_succ = ~(unsigned)0;
+ fn->blocks[EXIT_BLOCK].num_succ = ~(unsigned)0;
}
/* Propagate the measured counts, this must be done in the same
}
}
-/* Format a HOST_WIDE_INT as either a percent ratio, or absolute
+/* Format a GCOV_TYPE integer as either a percent ratio, or absolute
count. If dp >= 0, format TOP/BOTTOM * 100 to DP decimal places.
If DP is zero, no decimal point is printed. Only print 100% when
TOP==BOTTOM and only print 0% when TOP=0. If dp < 0, then simply
}
}
else
- sprintf (buffer, HOST_WIDEST_INT_PRINT_DEC, (HOST_WIDEST_INT)top);
+ sprintf (buffer, "%" PRId64, (int64_t)top);
return buffer;
}
return string;
}
pos += len;
- ptr = XNEWVEC (char, string_len * 2);
- if (ptr)
- {
- memcpy (ptr, string, pos);
- string = ptr;
- string_len += 2;
- }
- else
- pos = 0;
+ string = XRESIZEVEC (char, string, string_len * 2);
+ string_len *= 2;
}
return pos ? string : NULL;
{
for (; fn && fn->line == line_num; fn = fn->line_next)
{
- arc_t *arc = fn->blocks[fn->num_blocks - 1].pred;
- gcov_type return_count = fn->blocks[fn->num_blocks - 1].count;
+ arc_t *arc = fn->blocks[EXIT_BLOCK].pred;
+ gcov_type return_count = fn->blocks[EXIT_BLOCK].count;
+ gcov_type called_count = fn->blocks[ENTRY_BLOCK].count;
for (; arc; arc = arc->pred_next)
if (arc->fake)
return_count -= arc->count;
- fprintf (gcov_file, "function %s", fn->name);
+ fprintf (gcov_file, "function %s", flag_demangled_names ?
+ fn->demangled_name : fn->name);
fprintf (gcov_file, " called %s",
- format_gcov (fn->blocks[0].count, 0, -1));
+ format_gcov (called_count, 0, -1));
fprintf (gcov_file, " returned %s",
- format_gcov (return_count, fn->blocks[0].count, 0));
+ format_gcov (return_count, called_count, 0));
fprintf (gcov_file, " blocks executed %s",
format_gcov (fn->blocks_executed, fn->num_blocks - 2, 0));
fprintf (gcov_file, "\n");
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