// SPDX-License-Identifier: GPL-2.0#include <dlfcn.h>#include <signal.h>#include <unistd.h> #include <subcmd/pager.h>#include "../util/debug.h"#include "../util/hist.h"#include "ui.h" struct mutex ui__lock;void *perf_gtk_handle;int use_browser = -1; #define PERF_GTK_DSO "libperf-gtk.so" #ifdef HAVE_GTK2_SUPPORT static int setup_gtk_browser(void){	int (*perf_ui_init)(void); 	if (perf_gtk_handle)		return 0; 	perf_gtk_handle = dlopen(PERF_GTK_DSO, RTLD_LAZY);	if (perf_gtk_handle == NULL) {		char buf[PATH_MAX];		scnprintf(buf, sizeof(buf), "%s/%s", LIBDIR, PERF_GTK_DSO);		perf_gtk_handle = dlopen(buf, RTLD_LAZY);	}	if (perf_gtk_handle == NULL)		return -1; 	perf_ui_init = dlsym(perf_gtk_handle, "perf_gtk__init");	if (perf_ui_init == NULL)		goto out_close; 	if (perf_ui_init() == 0)		return 0; out_close:	dlclose(perf_gtk_handle);	return -1;} static void exit_gtk_browser(bool wait_for_ok){	void (*perf_ui_exit)(bool); 	if (perf_gtk_handle == NULL)		return; 	perf_ui_exit = dlsym(perf_gtk_handle, "perf_gtk__exit");	if (perf_ui_exit == NULL)		goto out_close; 	perf_ui_exit(wait_for_ok); out_close:	dlclose(perf_gtk_handle); 	perf_gtk_handle = NULL;}#elsestatic inline int setup_gtk_browser(void) { return -1; }static inline void exit_gtk_browser(bool wait_for_ok __maybe_unused) {}#endif int stdio__config_color(const struct option *opt __maybe_unused,			const char *mode, int unset __maybe_unused){	perf_use_color_default = perf_config_colorbool("color.ui", mode, -1);	return 0;} void setup_browser(bool fallback_to_pager){	mutex_init(&ui__lock);	if (use_browser < 2 && (!isatty(1) || dump_trace))		use_browser = 0; 	/* default to TUI */	if (use_browser < 0)		use_browser = 1; 	switch (use_browser) {	case 2:		if (setup_gtk_browser() == 0)			break;		printf("GTK browser requested but could not find %s\n",		       PERF_GTK_DSO);		sleep(1);		use_browser = 1;		/* fall through */	case 1:		if (ui__init() == 0)			break;		/* fall through */	default:		use_browser = 0;		if (fallback_to_pager)			setup_pager();		break;	}} void exit_browser(bool wait_for_ok){	switch (use_browser) {	case 2:		exit_gtk_browser(wait_for_ok);		break; 	case 1:		ui__exit(wait_for_ok);		break; 	default:		break;	}	mutex_destroy(&ui__lock);} void pthread__block_sigwinch(void){	sigset_t set; 	sigemptyset(&set);	sigaddset(&set, SIGWINCH);	pthread_sigmask(SIG_BLOCK, &set, NULL);} void pthread__unblock_sigwinch(void){	sigset_t set; 	sigemptyset(&set);	sigaddset(&set, SIGWINCH);	pthread_sigmask(SIG_UNBLOCK, &set, NULL);}