#include <pthread.h>#include <dlfcn.h> #include "../util/cache.h"#include "../util/debug.h"#include "../util/hist.h" pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;void *perf_gtk_handle; #ifdef HAVE_GTK2_SUPPORTstatic 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 void setup_browser(bool fallback_to_pager){	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);		/* fall through */	case 1:		use_browser = 1;		if (ui__init() == 0)			break;		/* fall through */	default:		use_browser = 0;		if (fallback_to_pager)			setup_pager(); 		perf_hpp__init();		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;	}}