1 /**
2 * @file opd_extended.c
3 * OProfile Extended Feature
4 *
5 * @remark Copyright 2007-2009 OProfile authors
6 * @remark Read the file COPYING
7 *
8 * @author Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
9 * Copyright (c) 2009 Advanced Micro Devices, Inc.
10 */
11
12 #include "opd_extended.h"
13 #include "op_string.h"
14
15 #include <string.h>
16 #include <stdio.h>
17
18 /* This global variable is >= 0
19 * if extended feature is enabled */
20 static int opd_ext_feat_index;
21
22 extern struct opd_ext_handlers ibs_handlers;
23
24 /**
25 * OProfile Extended Feature Table
26 *
27 * This table contains a list of extended features.
28 */
29 static struct opd_ext_feature ext_feature_table[] = {
30 {"ibs", &ibs_handlers },
31 { NULL, NULL }
32 };
33
34
get_index_for_feature(char const * name)35 static int get_index_for_feature(char const * name)
36 {
37 int ret = -1;
38 unsigned int i;
39
40 if(!name)
41 return ret;
42
43 for (i = 0 ; ext_feature_table[i].feature != NULL ; i++ ) {
44 if(!strncmp(name, ext_feature_table[i].feature,
45 strlen(ext_feature_table[i].feature))) {
46 ret = i;
47 break;
48 }
49 }
50
51 return ret;
52 }
53
54
is_ext_enabled()55 static inline int is_ext_enabled()
56 {
57 if (opd_ext_feat_index >= 0
58 && ext_feature_table[opd_ext_feat_index].handlers != NULL)
59 return 1;
60 else
61 return 0;
62 }
63
64
is_ext_sfile_enabled()65 static inline int is_ext_sfile_enabled()
66 {
67 if (opd_ext_feat_index >= 0
68 && ext_feature_table[opd_ext_feat_index].handlers != NULL
69 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile != NULL)
70 return 1;
71 else
72 return 0;
73 }
74
75
76 /**
77 * Param "value" is the input from CML option with the format:
78 *
79 * <feature name>:<param1>:<param2>:<param3>:.....
80 *
81 * where param1,2.3,..n are optional.
82 */
opd_ext_initialize(char const * value)83 int opd_ext_initialize(char const * value)
84 {
85 int ret = EXIT_FAILURE;
86 char * tmp = NULL, * name = NULL, * args = NULL;
87
88 if(!value) {
89 opd_ext_feat_index = -1;
90 return 0;
91 }
92
93 tmp = op_xstrndup(value, strlen(value));
94
95 /* Parse feature name*/
96 if((name = strtok_r(tmp, ":", &args)) == NULL)
97 goto err_out;
98
99 if((opd_ext_feat_index = get_index_for_feature(name)) < 0)
100 goto err_out;
101
102 ret = ext_feature_table[opd_ext_feat_index].handlers->ext_init(args);
103
104 return ret;
105
106 err_out:
107 fprintf(stderr,"opd_ext_initialize: Invalid extended feature option: %s\n", value);
108 return ret;
109 }
110
111
opd_ext_deinitialize()112 int opd_ext_deinitialize()
113 {
114 int ret = EXIT_FAILURE;
115
116 if(opd_ext_feat_index == -1) {
117 return 0;
118 }
119
120 ret = ext_feature_table[opd_ext_feat_index].handlers->ext_deinit();
121
122 return ret;
123 }
124
125
opd_ext_print_stats()126 void opd_ext_print_stats()
127 {
128 if (is_ext_enabled()
129 && ext_feature_table[opd_ext_feat_index].handlers->ext_print_stats != NULL) {
130 printf("\n-- OProfile Extended-Feature Statistics --\n");
131 ext_feature_table[opd_ext_feat_index].handlers->ext_print_stats();
132 }
133 }
134
135
136 /**
137 * opd_sfile extended APIs
138 */
opd_ext_sfile_create(struct sfile * sf)139 void opd_ext_sfile_create(struct sfile * sf)
140 {
141 /* Creating ext sfile only if extended feature is enable*/
142 if (is_ext_sfile_enabled()
143 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->create != NULL)
144 ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->create(sf);
145 }
146
147
opd_ext_sfile_dup(struct sfile * to,struct sfile * from)148 void opd_ext_sfile_dup (struct sfile * to, struct sfile * from)
149 {
150 /* Duplicate ext sfile only if extended feature is enable*/
151 if (is_ext_sfile_enabled()
152 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->dup != NULL)
153 ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->dup(to, from);
154 }
155
156
opd_ext_sfile_close(struct sfile * sf)157 void opd_ext_sfile_close (struct sfile * sf)
158 {
159 /* Close ext sfile only if extended feature is enable*/
160 if (is_ext_sfile_enabled()
161 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->close != NULL)
162 ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->close(sf);
163 }
164
165
opd_ext_sfile_sync(struct sfile * sf)166 void opd_ext_sfile_sync(struct sfile * sf)
167 {
168 /* Sync ext sfile only if extended feature is enable*/
169 if (is_ext_sfile_enabled()
170 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->sync != NULL)
171 ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->sync(sf);
172 }
173
174
opd_ext_sfile_get(struct transient const * trans,int is_cg)175 odb_t * opd_ext_sfile_get(struct transient const * trans, int is_cg)
176 {
177 /* Get ext sfile only if extended feature is enable*/
178 if (is_ext_sfile_enabled()
179 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->get != NULL)
180 return ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->get(trans, is_cg);
181
182 return NULL;
183 }
184
185
opd_ext_find_counter_event(unsigned long counter)186 struct opd_event * opd_ext_find_counter_event(unsigned long counter)
187 {
188 /* Only if extended feature is enable*/
189 if (is_ext_sfile_enabled()
190 && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->find_counter_event != NULL)
191 return ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->find_counter_event(counter);
192
193 return NULL;
194 }
195
196