1// SPDX-License-Identifier: GPL-2.0
2#include <dlfcn.h>
3#include <signal.h>
4#include <unistd.h>
5
6#include <subcmd/pager.h>
7#include "../util/debug.h"
8#include "../util/hist.h"
9#include "ui.h"
10
11struct mutex ui__lock;
12void *perf_gtk_handle;
13int use_browser = -1;
14
15#define PERF_GTK_DSO "libperf-gtk.so"
16
17#ifdef HAVE_GTK2_SUPPORT
18
19static int setup_gtk_browser(void)
20{
21	int (*perf_ui_init)(void);
22
23	if (perf_gtk_handle)
24		return 0;
25
26	perf_gtk_handle = dlopen(PERF_GTK_DSO, RTLD_LAZY);
27	if (perf_gtk_handle == NULL) {
28		char buf[PATH_MAX];
29		scnprintf(buf, sizeof(buf), "%s/%s", LIBDIR, PERF_GTK_DSO);
30		perf_gtk_handle = dlopen(buf, RTLD_LAZY);
31	}
32	if (perf_gtk_handle == NULL)
33		return -1;
34
35	perf_ui_init = dlsym(perf_gtk_handle, "perf_gtk__init");
36	if (perf_ui_init == NULL)
37		goto out_close;
38
39	if (perf_ui_init() == 0)
40		return 0;
41
42out_close:
43	dlclose(perf_gtk_handle);
44	return -1;
45}
46
47static void exit_gtk_browser(bool wait_for_ok)
48{
49	void (*perf_ui_exit)(bool);
50
51	if (perf_gtk_handle == NULL)
52		return;
53
54	perf_ui_exit = dlsym(perf_gtk_handle, "perf_gtk__exit");
55	if (perf_ui_exit == NULL)
56		goto out_close;
57
58	perf_ui_exit(wait_for_ok);
59
60out_close:
61	dlclose(perf_gtk_handle);
62
63	perf_gtk_handle = NULL;
64}
65#else
66static inline int setup_gtk_browser(void) { return -1; }
67static inline void exit_gtk_browser(bool wait_for_ok __maybe_unused) {}
68#endif
69
70int stdio__config_color(const struct option *opt __maybe_unused,
71			const char *mode, int unset __maybe_unused)
72{
73	perf_use_color_default = perf_config_colorbool("color.ui", mode, -1);
74	return 0;
75}
76
77void setup_browser(bool fallback_to_pager)
78{
79	mutex_init(&ui__lock);
80	if (use_browser < 2 && (!isatty(1) || dump_trace))
81		use_browser = 0;
82
83	/* default to TUI */
84	if (use_browser < 0)
85		use_browser = 1;
86
87	switch (use_browser) {
88	case 2:
89		if (setup_gtk_browser() == 0)
90			break;
91		printf("GTK browser requested but could not find %s\n",
92		       PERF_GTK_DSO);
93		sleep(1);
94		use_browser = 1;
95		/* fall through */
96	case 1:
97		if (ui__init() == 0)
98			break;
99		/* fall through */
100	default:
101		use_browser = 0;
102		if (fallback_to_pager)
103			setup_pager();
104		break;
105	}
106}
107
108void exit_browser(bool wait_for_ok)
109{
110	switch (use_browser) {
111	case 2:
112		exit_gtk_browser(wait_for_ok);
113		break;
114
115	case 1:
116		ui__exit(wait_for_ok);
117		break;
118
119	default:
120		break;
121	}
122	mutex_destroy(&ui__lock);
123}
124
125void pthread__block_sigwinch(void)
126{
127	sigset_t set;
128
129	sigemptyset(&set);
130	sigaddset(&set, SIGWINCH);
131	pthread_sigmask(SIG_BLOCK, &set, NULL);
132}
133
134void pthread__unblock_sigwinch(void)
135{
136	sigset_t set;
137
138	sigemptyset(&set);
139	sigaddset(&set, SIGWINCH);
140	pthread_sigmask(SIG_UNBLOCK, &set, NULL);
141}
142