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1 | /* This file is part of the Linux Trace Toolkit viewer |
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2 | * Copyright (C) 2005 Simon Bouvier-Zappa |
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3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
18 | |
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19 | /*! \file lttv/modules/text/textFilter.c |
20 | * \brief Textual prompt for user filtering expression. |
21 | * |
22 | * The text filter facility will prompt for user filter option |
23 | * and transmit them to the lttv core. User can either specify |
24 | * a filtering string with the command line or/and specify a |
25 | * file containing filtering expressions. |
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26 | */ |
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27 | |
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28 | #ifdef HAVE_CONFIG_H |
29 | #include <config.h> |
30 | #endif |
31 | |
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32 | #include <lttv/lttv.h> |
33 | #include <lttv/option.h> |
34 | #include <lttv/module.h> |
35 | #include <lttv/hook.h> |
36 | #include <lttv/attribute.h> |
37 | #include <lttv/iattribute.h> |
38 | #include <lttv/stats.h> |
39 | #include <lttv/filter.h> |
40 | #include <ltt/ltt.h> |
41 | #include <ltt/event.h> |
42 | #include <ltt/type.h> |
43 | #include <ltt/trace.h> |
44 | #include <ltt/facility.h> |
45 | #include <stdio.h> |
46 | |
47 | /* Insert the hooks before and after each trace and tracefile, and for each |
48 | event. Print a global header. */ |
49 | |
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50 | /* |
51 | * TODO |
52 | * - specify wich hook function will be used to call the core filter |
53 | */ |
54 | |
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55 | static char |
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56 | *a_file_name = NULL, |
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57 | *a_string = NULL; |
58 | |
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59 | static LttvHooks |
60 | *before_traceset, |
61 | *event_hook; |
62 | |
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63 | /** |
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64 | * filters the file input from user |
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65 | * @param hook_data the hook data, unused |
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66 | */ |
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67 | void filter_analyze_file(void *hook_data) { |
68 | |
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69 | LttvAttributeValue value; |
70 | |
71 | LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes()); |
72 | |
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73 | /* |
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74 | * User may specify filtering options through static file |
75 | * and/or command line string. From these sources, an |
76 | * option string is rebuilded and sent to the filter core |
77 | */ |
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78 | if(!g_file_test(a_file_name,G_FILE_TEST_EXISTS)) { |
79 | g_warning("file %s does not exist", a_file_name); |
80 | return; |
81 | } |
82 | |
83 | char* a_file_content = NULL; |
84 | |
85 | g_file_get_contents(a_file_name,&a_file_content,NULL,NULL); |
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86 | |
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87 | g_assert(lttv_iattribute_find_by_path(attributes, "filter/expression", |
88 | LTTV_POINTER, &value)); |
89 | |
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90 | if(((GString*)*(value.v_pointer))->len != 0) g_string_append_c((GString*)*(value.v_pointer),'&'); |
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91 | g_string_append_c((GString*)*(value.v_pointer),'('); |
92 | g_string_append((GString*)*(value.v_pointer),a_file_content); |
93 | g_string_append_c((GString*)*(value.v_pointer),')'); |
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94 | |
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95 | } |
96 | |
97 | /** |
98 | * filters the string input from user |
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99 | * @param hook_data the hook data, unused |
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100 | */ |
101 | void filter_analyze_string(void *hook_data) { |
102 | |
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103 | LttvAttributeValue value; |
104 | |
105 | LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes()); |
106 | |
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107 | /* |
108 | * User may specify filtering options through static file |
109 | * and/or command line string. From these sources, an |
110 | * option string is rebuilded and sent to the filter core |
111 | */ |
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112 | g_assert(lttv_iattribute_find_by_path(attributes, "filter/expression", |
113 | LTTV_POINTER, &value)); |
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114 | |
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115 | if(((GString*)*(value.v_pointer))->len != 0) g_string_append_c((GString*)*(value.v_pointer),'&'); |
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116 | g_string_append_c((GString*)*(value.v_pointer),'('); |
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117 | g_string_append((GString*)*(value.v_pointer),a_string); |
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118 | g_string_append_c((GString*)*(value.v_pointer),')'); |
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119 | |
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120 | } |
121 | |
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122 | /** |
123 | * Output all filter commands on console |
124 | * @param hook_data the hook data |
125 | */ |
126 | void filter_list_commands(void *hook_data) { |
127 | |
128 | g_print("[field] [op] [value]\n\n"); |
129 | |
130 | g_print("*** Possible fields ***\n"); |
131 | g_print("event.name (string)\n"); |
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132 | g_print("event.facility (string)\n"); |
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133 | g_print("event.category (string)\n"); |
134 | g_print("event.time (double)\n"); |
135 | g_print("event.tsc (integer)\n"); |
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136 | g_print("event.field.facility_name.event_name.field_name.subfield_name (field_type)\n"); |
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137 | g_print("tracefile.name (string)\n"); |
138 | g_print("trace.name (string)\n"); |
139 | g_print("state.pid (integer)\n"); |
140 | g_print("state.ppid (integer)\n"); |
141 | g_print("state.creation_time (double)\n"); |
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142 | g_print("state.insertion_time (double)\n"); |
143 | g_print("state.process_name (string)\n"); |
144 | g_print("state.thread_brand (string)\n"); |
145 | g_print("state.execution_mode (string)\n"); |
146 | g_print("state.execution_submode (string)\n"); |
147 | g_print("state.process_status (string)\n"); |
148 | g_print("state.cpu (string)\n\n"); |
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149 | |
150 | g_print("*** Possible operators ***\n"); |
151 | g_print("equal '='\n"); |
152 | g_print("not equal '!='\n"); |
153 | g_print("greater '>'\n"); |
154 | g_print("greater or equal '>='\n"); |
155 | g_print("lower '<'\n"); |
156 | g_print("lower or equal '<='\n"); |
157 | |
158 | g_print("*** Possible values ***\n"); |
159 | g_print("string, integer, double"); |
160 | } |
161 | |
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162 | /** |
163 | * initialize the new module |
164 | */ |
165 | static void init() { |
166 | |
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167 | LttvAttributeValue value; |
168 | |
169 | LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes()); |
170 | |
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171 | g_assert(lttv_iattribute_find_by_path(attributes, "filter/expression", |
172 | LTTV_POINTER, &value)); |
173 | |
174 | *(value.v_pointer) = g_string_new(""); |
175 | |
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176 | g_info("Init textFilter.c"); |
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177 | |
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178 | a_string = NULL; |
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179 | lttv_option_add("expression", 'e', |
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180 | "filters a string issued by the user on the command line", |
181 | "string", |
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182 | LTTV_OPT_STRING, &a_string, filter_analyze_string, NULL); |
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183 | // add function to call for option |
184 | |
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185 | a_file_name = NULL; |
186 | lttv_option_add("filename", 'f', |
187 | "browse the filter options contained in specified file", |
188 | "file name", |
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189 | LTTV_OPT_STRING, &a_file_name, filter_analyze_file, NULL); |
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190 | |
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191 | lttv_option_add("list", 'l', |
192 | "list all possible filter commands for module", |
193 | "list commands", |
194 | LTTV_OPT_NONE, NULL, filter_list_commands, NULL); |
195 | |
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196 | } |
197 | |
198 | /** |
199 | * Destroy the current module |
200 | */ |
201 | static void destroy() { |
202 | g_info("Destroy textFilter"); |
203 | |
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204 | lttv_option_remove("expression"); |
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205 | |
206 | lttv_option_remove("filename"); |
207 | |
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208 | lttv_option_remove("list"); |
209 | |
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210 | LttvAttributeValue value; |
211 | |
212 | LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes()); |
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213 | |
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214 | g_assert(lttv_iattribute_find_by_path(attributes, "filter/expression", |
215 | LTTV_POINTER, &value)); |
216 | |
217 | g_string_free((GString*)*(value.v_pointer),TRUE); |
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218 | |
219 | } |
220 | |
221 | |
222 | LTTV_MODULE("textFilter", "Filters traces", \ |
223 | "Filter the trace following commands issued by user input", \ |
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224 | init, destroy, "option") |
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225 | |