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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/perf/ui/tui/helpline.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/ui/tui/helpline.c')
-rw-r--r-- | tools/perf/ui/tui/helpline.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/tools/perf/ui/tui/helpline.c b/tools/perf/ui/tui/helpline.c new file mode 100644 index 000000000..db4952f59 --- /dev/null +++ b/tools/perf/ui/tui/helpline.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <linux/kernel.h> +#include <linux/string.h> + +#include "../helpline.h" +#include "../ui.h" +#include "../libslang.h" + +char ui_helpline__last_msg[1024]; +bool tui_helpline__set; + +static void tui_helpline__pop(void) +{ +} + +static void tui_helpline__push(const char *msg) +{ + const size_t sz = sizeof(ui_helpline__current); + + SLsmg_gotorc(SLtt_Screen_Rows - 1, 0); + SLsmg_set_color(0); + SLsmg_write_nstring((char *)msg, SLtt_Screen_Cols); + SLsmg_refresh(); + strlcpy(ui_helpline__current, msg, sz); +} + +static int tui_helpline__show(const char *format, va_list ap) +{ + int ret; + static int backlog; + + mutex_lock(&ui__lock); + ret = vscnprintf(ui_helpline__last_msg + backlog, + sizeof(ui_helpline__last_msg) - backlog, format, ap); + backlog += ret; + + tui_helpline__set = true; + + if (ui_helpline__last_msg[backlog - 1] == '\n') { + ui_helpline__puts(ui_helpline__last_msg); + SLsmg_refresh(); + backlog = 0; + } + mutex_unlock(&ui__lock); + + return ret; +} + +struct ui_helpline tui_helpline_fns = { + .pop = tui_helpline__pop, + .push = tui_helpline__push, + .show = tui_helpline__show, +}; + +void ui_helpline__init(void) +{ + helpline_fns = &tui_helpline_fns; + ui_helpline__puts(" "); +} |