summaryrefslogtreecommitdiff
path: root/tools/perf/util/trace-event-scripting.c
blob: ba58f69777a1aad9b609316badd2c64ca117c57c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * trace-event-scripting.  Scripting engine common and initialization code.
 *
 * Copyright (C) 2009-2010 Tom Zanussi <tzanussi@gmail.com>
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include "../perf.h"
#include "debug.h"
#include "trace-event.h"
#include <linux/zalloc.h>

struct scripting_context *scripting_context;

static int flush_script_unsupported(void)
{
	return 0;
}

static int stop_script_unsupported(void)
{
	return 0;
}

static void process_event_unsupported(union perf_event *event __maybe_unused,
				      struct perf_sample *sample __maybe_unused,
				      struct perf_evsel *evsel __maybe_unused,
				      struct addr_location *al __maybe_unused)
{
}

static void print_python_unsupported_msg(void)
{
	fprintf(stderr, "Python scripting not supported."
		"  Install libpython and rebuild perf to enable it.\n"
		"For example:\n  # apt-get install python-dev (ubuntu)"
		"\n  # yum install python-devel (Fedora)"
		"\n  etc.\n");
}

static int python_start_script_unsupported(const char *script __maybe_unused,
					   int argc __maybe_unused,
					   const char **argv __maybe_unused)
{
	print_python_unsupported_msg();

	return -1;
}

static int python_generate_script_unsupported(struct tep_handle *pevent
					      __maybe_unused,
					      const char *outfile
					      __maybe_unused)
{
	print_python_unsupported_msg();

	return -1;
}

struct scripting_ops python_scripting_unsupported_ops = {
	.name = "Python",
	.start_script = python_start_script_unsupported,
	.flush_script = flush_script_unsupported,
	.stop_script = stop_script_unsupported,
	.process_event = process_event_unsupported,
	.generate_script = python_generate_script_unsupported,
};

static void register_python_scripting(struct scripting_ops *scripting_ops)
{
	if (scripting_context == NULL)
		scripting_context = malloc(sizeof(*scripting_context));

       if (scripting_context == NULL ||
	   script_spec_register("Python", scripting_ops) ||
	   script_spec_register("py", scripting_ops)) {
		pr_err("Error registering Python script extension: disabling it\n");
		zfree(&scripting_context);
	}
}

#ifndef HAVE_LIBPYTHON_SUPPORT
void setup_python_scripting(void)
{
	register_python_scripting(&python_scripting_unsupported_ops);
}
#else
extern struct scripting_ops python_scripting_ops;

void setup_python_scripting(void)
{
	register_python_scripting(&python_scripting_ops);
}
#endif

static void print_perl_unsupported_msg(void)
{
	fprintf(stderr, "Perl scripting not supported."
		"  Install libperl and rebuild perf to enable it.\n"
		"For example:\n  # apt-get install libperl-dev (ubuntu)"
		"\n  # yum install 'perl(ExtUtils::Embed)' (Fedora)"
		"\n  etc.\n");
}

static int perl_start_script_unsupported(const char *script __maybe_unused,
					 int argc __maybe_unused,
					 const char **argv __maybe_unused)
{
	print_perl_unsupported_msg();

	return -1;
}

static int perl_generate_script_unsupported(struct tep_handle *pevent
					    __maybe_unused,
					    const char *outfile __maybe_unused)
{
	print_perl_unsupported_msg();

	return -1;
}

struct scripting_ops perl_scripting_unsupported_ops = {
	.name = "Perl",
	.start_script = perl_start_script_unsupported,
	.flush_script = flush_script_unsupported,
	.stop_script = stop_script_unsupported,
	.process_event = process_event_unsupported,
	.generate_script = perl_generate_script_unsupported,
};

static void register_perl_scripting(struct scripting_ops *scripting_ops)
{
	if (scripting_context == NULL)
		scripting_context = malloc(sizeof(*scripting_context));

       if (scripting_context == NULL ||
	   script_spec_register("Perl", scripting_ops) ||
	   script_spec_register("pl", scripting_ops)) {
		pr_err("Error registering Perl script extension: disabling it\n");
		zfree(&scripting_context);
	}
}

#ifndef HAVE_LIBPERL_SUPPORT
void setup_perl_scripting(void)
{
	register_perl_scripting(&perl_scripting_unsupported_ops);
}
#else
extern struct scripting_ops perl_scripting_ops;

void setup_perl_scripting(void)
{
	register_perl_scripting(&perl_scripting_ops);
}
#endif