Merge remote-tracking branch 'remotes/armbru/tags/pull-hw-2015-04-02' into staging
[qemu/qmp-unstable.git] / scripts / switch-timer-api
blobb0e230b9f1d619ca1b8c411909d5af4b1389c8fe
1 #!/usr/bin/perl
3 use strict;
4 use warnings;
5 use Getopt::Long;
6 use FindBin;
8 my @legacy = qw(qemu_clock_ptr qemu_get_clock_ns qemu_get_clock_ms qemu_register_clock_reset_notifier qemu_unregister_clock_reset_notifier qemu_new_timer qemu_free_timer qemu_del_timer qemu_mod_timer_ns qemu_mod_timer qemu_run_timers qemu_new_timer_ns qemu_new_timer_us qemu_new_timer_ms);
9 my $legacyre = '\b('.join('|', @legacy).')\b';
10 my $option_git;
11 my $option_dryrun;
12 my $option_quiet;
13 my $option_rtc;
14 my $suffix=".tmp.$$";
15 my @files;
16 my $getfiles = 'git grep -l -E \'\b((host|rt|vm|rtc)_clock\b|qemu_\w*timer)\' | egrep \'\.[ch]$\' | egrep -v \'qemu-timer\.c$|include/qemu/timer\.h$\'';
18 sub Syntax
20 print STDERR <<STOP;
21 Usage: $FindBin::Script [options] FILE ...
23 Translate each FILE to the new QEMU timer API. If no files
24 are passed, a reasonable guess is taken.
26 Options:
27 -q, --quiet Do not show warnings etc
28 -d, --dry-run Do a dry run
29 -g, --git Generate a git commit for each change
30 -r, --rtc Only fix up rtc usage
31 -h, --help Print this message
33 STOP
34 return;
37 sub ParseOptions
39 if (!GetOptions (
40 "dry-run|d" => \$option_dryrun,
41 "git|g" => \$option_git,
42 "quiet|q" => \$option_quiet,
43 "rtc|r" => \$option_rtc,
44 "help|h" => sub { Syntax(); exit(0); }
47 Syntax();
48 die "Bad options";
51 if ($#ARGV >=0)
53 @files = @ARGV;
55 else
57 @files = split(/\s+/, `$getfiles`);
60 foreach my $file (@files)
62 die "Cannot find $file" unless (-f $file && -r $file);
66 sub DoWarn
68 my $text = shift @_;
69 my $line = shift @_;
70 return if ($option_quiet);
71 chomp ($line);
72 print STDERR "$text\n";
73 print STDERR "$line\n\n";
76 sub Process
78 my $ifn = shift @_;
79 my $ofn = $ifn.$suffix;
81 my $intext;
82 my $outtext;
83 my $linenum = 0;
85 open my $input, "<", $ifn || die "Cannot open $ifn for read: $!";
87 while (<$input>)
89 my $line = $_;
90 $intext .= $line;
91 $linenum++;
93 # fix the specific uses
94 unless ($option_rtc)
96 $line =~ s/\bqemu_new_timer(_[num]s)\s*\((vm_|rt_|host_)clock\b/timer_new$1(XXX_$2clock/g;
97 $line =~ s/\bqemu_new_timer\s*\((vm_|rt_|host_)clock\b/timer_new(XXX_$1clock/g;
98 $line =~ s/\bqemu_get_clock(_[num]s)\s*\((vm_|rt_|host_)clock\b/qemu_clock_get$1(XXX_$2clock/g;
101 # rtc is different
102 $line =~ s/\bqemu_new_timer(_[num]s)\s*\(rtc_clock\b/timer_new$1(rtc_clock/g;
103 $line =~ s/\bqemu_new_timer\s*\(rtc_clock\b/timer_new(rtc_clock/g;
104 $line =~ s/\bqemu_get_clock(_[num]s)\s*\(rtc_clock\b/qemu_clock_get$1(rtc_clock/g;
105 $line =~ s/\bqemu_register_clock_reset_notifier\s*\(rtc_clock\b/qemu_register_clock_reset_notifier(qemu_clock_ptr(rtc_clock)/g;
107 unless ($option_rtc)
109 # fix up comments
110 $line =~ s/\b(vm_|rt_|host_)clock\b/XXX_$1clock/g if ($line =~ m,^[/ ]+\*,);
112 # spurious fprintf error reporting
113 $line =~ s/: qemu_new_timer_ns failed/: timer_new_ns failed/g;
115 # these have just changed name
116 $line =~ s/\bqemu_mod_timer\b/timer_mod/g;
117 $line =~ s/\bqemu_mod_timer_(ns|us|ms)\b/timer_mod_$1/g;
118 $line =~ s/\bqemu_free_timer\b/timer_free/g;
119 $line =~ s/\bqemu_del_timer\b/timer_del/g;
122 # fix up rtc_clock
123 $line =~ s/QEMUClock \*rtc_clock;/QEMUClockType rtc_clock;/g;
124 $line =~ s/\brtc_clock = (vm_|rt_|host_)clock\b/rtc_clock = XXX_$1clock/g;
126 unless ($option_rtc)
128 # replace any more general uses
129 $line =~ s/\b(vm_|rt_|host_)clock\b/qemu_clock_ptr(XXX_$1clock)/g;
132 # fix up the place holders
133 $line =~ s/\bXXX_vm_clock\b/QEMU_CLOCK_VIRTUAL/g;
134 $line =~ s/\bXXX_rt_clock\b/QEMU_CLOCK_REALTIME/g;
135 $line =~ s/\bXXX_host_clock\b/QEMU_CLOCK_HOST/g;
137 unless ($option_rtc)
139 DoWarn("$ifn:$linenum WARNING: timer $1 not fixed up", $line) if ($line =~ /\b((vm_|rt_|host_)clock)\b/);
140 DoWarn("$ifn:$linenum WARNING: function $1 not fixed up", $line) if ($line =~ /\b(qemu_new_timer\w+)\b/);
141 DoWarn("$ifn:$linenum WARNING: legacy function $1 remains", $line) if ($line =~ /$legacyre/o);
144 $outtext .= $line;
147 close $input;
149 if ($intext ne $outtext)
151 print STDERR "Patching $ifn\n" unless ($option_quiet);
152 unless ($option_dryrun)
154 open my $output, ">", $ofn || die "Cannot open $ofn for write: $!";
155 print $output $outtext;
156 close $output;
157 rename ($ofn, $ifn) || die "Cannot rename temp file to $ifn: $!";
158 return 1;
161 return 0;
164 sub DoCommit
166 my $file = shift @_;
167 open (my $git, "| git commit -F - $file") || die "Cannot run git commit on $file: $!";
168 print $git "timers api: use new timer api in $file\n\nConvert $file to use new timer API.\nThis is an automated commit made by scripts/switch-timer-api\n";
169 close ($git);
172 ParseOptions;
174 foreach my $file (@files)
176 my $changed = Process ($file);
177 DoCommit($file) if ($changed && $option_git);