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authorDenys Vlasenko2017-01-11 16:17:59 +0100
committerDenys Vlasenko2017-01-11 16:17:59 +0100
commit01ccdd1d3c5221789f1ac62ced12b7984d910705 (patch)
treea6eb44f24c1324ddf18bfcec57fd4c3735aa1245 /procps/powertop.c
parent8944c67b1f61ca6a51a485772d5d1e6a8ff3d83d (diff)
downloadbusybox-01ccdd1d3c5221789f1ac62ced12b7984d910705.zip
busybox-01ccdd1d3c5221789f1ac62ced12b7984d910705.tar.gz
libbb: consolidate the code to set termios unbuffered mode
function old new delta set_termios_to_raw - 116 +116 count_lines 72 74 +2 powertop_main 1458 1430 -28 top_main 943 914 -29 more_main 759 714 -45 fsck_minix_main 2969 2921 -48 conspy_main 1197 1135 -62 rawmode 99 36 -63 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/6 up/down: 118/-275) Total: -157 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'procps/powertop.c')
-rw-r--r--procps/powertop.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/procps/powertop.c b/procps/powertop.c
index ce85f41..ee80616 100644
--- a/procps/powertop.c
+++ b/procps/powertop.c
@@ -683,7 +683,6 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
ullong cur_duration[MAX_CSTATE_COUNT];
char cstate_lines[MAX_CSTATE_COUNT + 2][64];
#if ENABLE_FEATURE_USE_TERMIOS
- struct termios new_settings;
struct pollfd pfd[1];
pfd[0].fd = 0;
@@ -707,14 +706,11 @@ int powertop_main(int UNUSED_PARAM argc, char UNUSED_PARAM **argv)
puts("Collecting data for "DEFAULT_SLEEP_STR" seconds");
#if ENABLE_FEATURE_USE_TERMIOS
- tcgetattr(0, (void *)&G.init_settings);
- memcpy(&new_settings, &G.init_settings, sizeof(new_settings));
- /* Turn on unbuffered input, turn off echoing */
- new_settings.c_lflag &= ~(ISIG | ICANON | ECHO | ECHONL);
+ /* Turn on unbuffered input; turn off echoing, ^C ^Z etc */
+ set_termios_to_raw(STDIN_FILENO, &G.init_settings, TERMIOS_CLEAR_ISIG);
+ bb_signals(BB_FATAL_SIGS, sig_handler);
/* So we don't forget to reset term settings */
atexit(reset_term);
- bb_signals(BB_FATAL_SIGS, sig_handler);
- tcsetattr_stdin_TCSANOW(&new_settings);
#endif
/* Collect initial data */