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-rw-r--r--kernel/tools/perf/ui/tui/setup.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/kernel/tools/perf/ui/tui/setup.c b/kernel/tools/perf/ui/tui/setup.c
new file mode 100644
index 000000000..b77e1d771
--- /dev/null
+++ b/kernel/tools/perf/ui/tui/setup.c
@@ -0,0 +1,174 @@
+#include <signal.h>
+#include <stdbool.h>
+#ifdef HAVE_BACKTRACE_SUPPORT
+#include <execinfo.h>
+#endif
+
+#include "../../util/cache.h"
+#include "../../util/debug.h"
+#include "../browser.h"
+#include "../helpline.h"
+#include "../ui.h"
+#include "../util.h"
+#include "../libslang.h"
+#include "../keysyms.h"
+#include "tui.h"
+
+static volatile int ui__need_resize;
+
+extern struct perf_error_ops perf_tui_eops;
+extern bool tui_helpline__set;
+
+extern void hist_browser__init_hpp(void);
+
+void ui__refresh_dimensions(bool force)
+{
+ if (force || ui__need_resize) {
+ ui__need_resize = 0;
+ pthread_mutex_lock(&ui__lock);
+ SLtt_get_screen_size();
+ SLsmg_reinit_smg();
+ pthread_mutex_unlock(&ui__lock);
+ }
+}
+
+static void ui__sigwinch(int sig __maybe_unused)
+{
+ ui__need_resize = 1;
+}
+
+static void ui__setup_sigwinch(void)
+{
+ static bool done;
+
+ if (done)
+ return;
+
+ done = true;
+ pthread__unblock_sigwinch();
+ signal(SIGWINCH, ui__sigwinch);
+}
+
+int ui__getch(int delay_secs)
+{
+ struct timeval timeout, *ptimeout = delay_secs ? &timeout : NULL;
+ fd_set read_set;
+ int err, key;
+
+ ui__setup_sigwinch();
+
+ FD_ZERO(&read_set);
+ FD_SET(0, &read_set);
+
+ if (delay_secs) {
+ timeout.tv_sec = delay_secs;
+ timeout.tv_usec = 0;
+ }
+
+ err = select(1, &read_set, NULL, NULL, ptimeout);
+
+ if (err == 0)
+ return K_TIMER;
+
+ if (err == -1) {
+ if (errno == EINTR)
+ return K_RESIZE;
+ return K_ERROR;
+ }
+
+ key = SLang_getkey();
+ if (key != K_ESC)
+ return key;
+
+ FD_ZERO(&read_set);
+ FD_SET(0, &read_set);
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 20;
+ err = select(1, &read_set, NULL, NULL, &timeout);
+ if (err == 0)
+ return K_ESC;
+
+ SLang_ungetkey(key);
+ return SLkp_getkey();
+}
+
+#ifdef HAVE_BACKTRACE_SUPPORT
+static void ui__signal_backtrace(int sig)
+{
+ void *stackdump[32];
+ size_t size;
+
+ ui__exit(false);
+ psignal(sig, "perf");
+
+ printf("-------- backtrace --------\n");
+ size = backtrace(stackdump, ARRAY_SIZE(stackdump));
+ backtrace_symbols_fd(stackdump, size, STDOUT_FILENO);
+
+ exit(0);
+}
+#else
+# define ui__signal_backtrace ui__signal
+#endif
+
+static void ui__signal(int sig)
+{
+ ui__exit(false);
+ psignal(sig, "perf");
+ exit(0);
+}
+
+int ui__init(void)
+{
+ int err;
+
+ SLutf8_enable(-1);
+ SLtt_get_terminfo();
+ SLtt_get_screen_size();
+
+ err = SLsmg_init_smg();
+ if (err < 0)
+ goto out;
+ err = SLang_init_tty(0, 0, 0);
+ if (err < 0)
+ goto out;
+
+ err = SLkp_init();
+ if (err < 0) {
+ pr_err("TUI initialization failed.\n");
+ goto out;
+ }
+
+ SLkp_define_keysym((char *)"^(kB)", SL_KEY_UNTAB);
+
+ ui_helpline__init();
+ ui_browser__init();
+ tui_progress__init();
+
+ signal(SIGSEGV, ui__signal_backtrace);
+ signal(SIGFPE, ui__signal_backtrace);
+ signal(SIGINT, ui__signal);
+ signal(SIGQUIT, ui__signal);
+ signal(SIGTERM, ui__signal);
+
+ perf_error__register(&perf_tui_eops);
+
+ hist_browser__init_hpp();
+out:
+ return err;
+}
+
+void ui__exit(bool wait_for_ok)
+{
+ if (wait_for_ok && tui_helpline__set)
+ ui__question_window("Fatal Error",
+ ui_helpline__last_msg,
+ "Press any key...", 0);
+
+ SLtt_set_cursor_visibility(1);
+ SLsmg_refresh();
+ SLsmg_reset_smg();
+ SLang_reset_tty();
+
+ perf_error__unregister(&perf_tui_eops);
+}