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