linux/tools/perf/ui/tui/helpline.c

59 lines
1.2 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include "../../util/debug.h"
#include "../helpline.h"
#include "../ui.h"
#include "../libslang.h"
char ui_helpline__last_msg[1024];
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();
strncpy(ui_helpline__current, msg, sz)[sz - 1] = '\0';
}
static int tui_helpline__show(const char *format, va_list ap)
{
int ret;
static int backlog;
pthread_mutex_lock(&ui__lock);
ret = vscnprintf(ui_helpline__last_msg + backlog,
sizeof(ui_helpline__last_msg) - backlog, format, ap);
backlog += ret;
if (ui_helpline__last_msg[backlog - 1] == '\n') {
ui_helpline__puts(ui_helpline__last_msg);
SLsmg_refresh();
backlog = 0;
}
pthread_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(" ");
}