lttv/lttv/traceset.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Michel Dagenais
   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
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <lttv/traceset.h>
  24 #include <lttv/iattribute.h>
  25 #include <stdio.h>
  26 #include <babeltrace/context.h>
  27
  28 /* A trace is a sequence of events gathered in the same tracing session. The
  29    events may be stored in several tracefiles in the same directory.
  30    A trace set is defined when several traces are to be analyzed together,
  31    possibly to study the interactions between events in the different traces.
  32 */
  33
  34 struct _LttvTraceset {
  35         char * filename;
  36         GPtrArray *traces;
  37         struct bt_context *context;
  38         LttvAttribute *a;
  39 };
  40
  41
  42 struct _LttvTrace {
  43         LttTrace *t;
  44         LttvAttribute *a;
  45         guint ref_count;
  46 };
  47
  48
  49 LttvTraceset *lttv_traceset_new()
  50 {
  51         LttvTraceset *s;
  52
  53         s = g_new(LttvTraceset, 1);
  54         s->filename = NULL;
  55         s->traces = g_ptr_array_new();
  56         s->context = bt_context_create();
  57         s->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
  58         return s;
  59 }
  60
  61 char * lttv_traceset_name(LttvTraceset * s)
  62 {
  63         return s->filename;
  64 }
  65
  66 LttvTrace *lttv_trace_new(LttTrace *t)
  67 {
  68         LttvTrace *new_trace;
  69
  70         new_trace = g_new(LttvTrace, 1);
  71         new_trace->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL);
  72         new_trace->t = t;
  73         new_trace->ref_count = 0;
  74         return new_trace;
  75 }
  76
  77
  78 LttvTraceset *lttv_traceset_copy(LttvTraceset *s_orig)
  79 {
  80         guint i;
  81         LttvTraceset *s;
  82         LttvTrace * trace;
  83
  84         s = g_new(LttvTraceset, 1);
  85         s->filename = NULL;
  86         s->traces = g_ptr_array_new();
  87         for(i=0;i<s_orig->traces->len;i++)
  88         {
  89                 trace = g_ptr_array_index(s_orig->traces, i);
  90                 trace->ref_count++;
  91
  92                 g_ptr_array_add(s->traces, trace);
  93         }
  94         s->context = s_orig->context;
  95         bt_context_get(s->context);
  96         s->a = LTTV_ATTRIBUTE(lttv_iattribute_deep_copy(LTTV_IATTRIBUTE(s_orig->a)));
  97         return s;
  98 }
  99
 100
 101 LttvTraceset *lttv_traceset_load(const gchar *filename)
 102 {
 103         LttvTraceset *s = g_new(LttvTraceset,1);
 104         FILE *tf;
 105
 106         s->filename = g_strdup(filename);
 107         tf = fopen(filename,"r");
 108
 109         g_critical("NOT IMPLEMENTED : load traceset data from a XML file");
 110
 111         fclose(tf);
 112         return s;
 113 }
 114
 115 gint lttv_traceset_save(LttvTraceset *s)
 116 {
 117         FILE *tf;
 118
 119         tf = fopen(s->filename, "w");
 120
 121         g_critical("NOT IMPLEMENTED : save traceset data in a XML file");
 122
 123         fclose(tf);
 124         return 0;
 125 }
 126
 127 void lttv_traceset_destroy(LttvTraceset *s)
 128 {
 129         guint i;
 130
 131         for(i=0;i<s->traces->len;i++) {
 132                 LttvTrace *trace = g_ptr_array_index(s->traces, i);
 133                 lttv_trace_unref(trace);
 134                 if(lttv_trace_get_ref_number(trace) == 0)
 135                         lttv_trace_destroy(trace);
 136         }
 137         g_ptr_array_free(s->traces, TRUE);
 138         bt_context_put(s->context);
 139         g_object_unref(s->a);
 140         g_free(s);
 141 }
 142
 143 struct bt_context *lttv_traceset_get_context(LttvTraceset *s)
 144 {
 145         return s->context;
 146 }
 147
 148 void lttv_trace_destroy(LttvTrace *t)
 149 {
 150         g_object_unref(t->a);
 151         g_free(t);
 152 }
 153
 154
 155 void lttv_traceset_add(LttvTraceset *s, LttvTrace *t)
 156 {
 157         t->ref_count++;
 158         g_ptr_array_add(s->traces, t);
 159 }
 160
 161
 162 unsigned lttv_traceset_number(LttvTraceset *s)
 163 {
 164         return s->traces->len;
 165 }
 166
 167
 168 LttvTrace *lttv_traceset_get(LttvTraceset *s, unsigned i)
 169 {
 170         g_assert(s->traces->len > i);
 171         return ((LttvTrace *)s->traces->pdata[i]);
 172 }
 173
 174
 175 void lttv_traceset_remove(LttvTraceset *s, unsigned i)
 176 {
 177         LttvTrace * t;
 178         g_assert(s->traces->len > i);
 179         t = (LttvTrace *)s->traces->pdata[i];
 180         t->ref_count--;
 181         g_ptr_array_remove_index(s->traces, i);
 182 }
 183
 184
 185 /* A set of attributes is attached to each trace set, trace and tracefile
 186          to store user defined data as needed. */
 187
 188 LttvAttribute *lttv_traceset_attribute(LttvTraceset *s)
 189 {
 190         return s->a;
 191 }
 192
 193
 194 LttvAttribute *lttv_trace_attribute(LttvTrace *t)
 195 {
 196         return t->a;
 197 }
 198
 199
 200 LttTrace *lttv_trace(LttvTrace *t)
 201 {
 202         return t->t;
 203 }
 204
 205 guint lttv_trace_get_ref_number(LttvTrace * t)
 206 {
 207         return t->ref_count;
 208 }
 209
 210 guint lttv_trace_ref(LttvTrace * t)
 211 {
 212         t->ref_count++;
 213
 214         return t->ref_count;
 215 }
 216
 217 guint lttv_trace_unref(LttvTrace * t)
 218 {
 219         if(likely(t->ref_count > 0))
 220                 t->ref_count--;
 221
 222         return t->ref_count;
 223 }
 224