mtr uses dgcov for --gcov option

mysql-test/lib/mtr_gcov.pl

-# -*- cperl -*-
-# Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
-# 
-# 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; version 2 of the License.
-# 
-# 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 St, Fifth Floor, Boston, MA  02110-1301  USA
-
-# This is a library file used by the Perl version of mysql-test-run,
-# and is part of the translation of the Bourne shell script with the
-# same name.
-
-use strict;
-
-our $basedir;
-
-sub gcov_prepare ($) {
-  my ($dir)= @_;
-  print "Purging gcov information from '$dir'...\n";
-
-  system("find $dir -name \*.gcov -o -name \*.da"
-             . " -o -name \*.gcda | xargs rm");
-}
-
-#
-# Collect gcov statistics.
-# Arguments:
-#   $dir       basedir, normally build directory
-#   $gcov      gcov utility program [path] name
-#   $gcov_msg  message file name
-#   $gcov_err  error file name
-#
-sub gcov_collect ($$$) {
-  my ($dir, $gcov, $gcov_msg, $gcov_err)= @_;
-
-  # Get current directory to return to later.
-  my $start_dir= cwd();
-
-  print "Collecting source coverage info using '$gcov'...$basedir\n";
-  -f "$dir/$gcov_msg" and unlink("$dir/$gcov_msg");
-  -f "$dir/$gcov_err" and unlink("$dir/$gcov_err");
-
-  my @dirs= `find "$dir" -type d -print | sort`;
-  #print "List of directories:\n@dirs\n";
-
-  foreach my $d ( @dirs ) {
-    chomp($d);
-    chdir($d) or next;
-
-    my @flist= glob("*.*.gcno");
-    print ("Collecting in '$d'...\n") if @flist;
-
-    foreach my $f (@flist) {
-      system("$gcov $f 2>>$dir/$gcov_err >>$dir/$gcov_msg");
-      system("perl", "$basedir/mysql-test/lib/process-purecov-annotations.pl", "$f.gcov");
-    }
-    chdir($start_dir);
-  }
-  print "gcov info in $dir/$gcov_msg, errors in $dir/$gcov_err\n";
-}
-
-
-1;

mysql-test/mysql-test-run.pl

@@ -104,7 +104,6 @@ use IO::Select;
 
 require "mtr_process.pl";
 require "mtr_io.pl";
-require "mtr_gcov.pl";
 require "mtr_gprof.pl";
 require "mtr_misc.pl";
 
@@ -248,11 +247,6 @@ our $opt_mem= $ENV{'MTR_MEM'};
 our $opt_clean_vardir= $ENV{'MTR_CLEAN_VARDIR'};
 
 our $opt_gcov;
-our $opt_gcov_src_dir=".";
-our $opt_gcov_exe= "gcov";
-our $opt_gcov_err= "mysql-test-gcov.err";
-our $opt_gcov_msg= "mysql-test-gcov.msg";
-
 our $opt_gprof;
 our %gprof_dirs;
 
@@ -383,11 +377,6 @@ sub main {
   # --help will not reach here, so now it's safe to assume we have binaries
   My::SafeProcess::find_bin();
 
-  if ( $opt_gcov ) {
-    gcov_prepare($basedir . "/" . $opt_gcov_src_dir);
-  }
-
-  
   print "vardir: $opt_vardir\n";
   initialize_servers();
   init_timers();
@@ -431,6 +420,10 @@ sub main {
     exit 0;
   }
 
+  if ($opt_gcov) {
+    system './dgcov.pl --purge';
+  }
+  
   #######################################################################
   my $num_tests= @$tests;
   if ( $opt_parallel eq "auto" ) {
@@ -555,15 +548,15 @@ sub main {
 
   mtr_print_line();
 
-  if ( $opt_gcov ) {
-    gcov_collect($basedir . "/" . $opt_gcov_src_dir, $opt_gcov_exe,
-		 $opt_gcov_msg, $opt_gcov_err);
-  }
-
   print_total_times($opt_parallel) if $opt_report_times;
 
   mtr_report_stats($prefix, $fail, $completed, $extra_warnings);
 
+  if ($opt_gcov) {
+    mtr_report("Running dgcov");
+    system "./dgcov.pl --generate > $opt_vardir/last_changes.dgcov";
+  }
+
   if ( @$completed != $num_tests)
   {
     mtr_error("Not all tests completed (only ". scalar(@$completed) .
@@ -1148,7 +1141,6 @@ sub command_line_setup {
 
              # Coverage, profiling etc
              'gcov'                     => \$opt_gcov,
-             'gcov-src-dir=s'           => \$opt_gcov_src_dir,
              'gprof'                    => \$opt_gprof,
              'valgrind|valgrind-all'    => \$opt_valgrind,
              'valgrind-mysqltest'       => \$opt_valgrind_mysqltest,
@@ -6180,9 +6172,6 @@ Misc options
                         actions. Disable facility with NUM=0.
   gcov                  Collect coverage information after the test.
                         The result is a gcov file per source and header file.
-  gcov-src-dir=subdir   Collect coverage only within the given subdirectory.
-                        For example, if you're only developing the SQL layer, 
-                        it makes sense to use --gcov-src-dir=sql
   gprof                 Collect profiling information using gprof.
   experimental=<file>   Refer to list of tests considered experimental;
                         failures will be marked exp-fail instead of fail.