mono/mini/trace.c

   1 /*
   2  * trace.c: Tracing facilities for the Mono Runtime.
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  */
  10
  11 #include <config.h>
  12 #include <signal.h>
  13 #include <unistd.h>
  14 #include <string.h>
  15 #include "mini.h"
  16 #include <mono/metadata/debug-helpers.h>
  17 #include "trace.h"
  18
  19 static MonoTraceSpec trace_spec;
  20
  21 gboolean
  22 mono_trace_eval (MonoMethod *method)
  23 {
  24         MonoTraceSpec *s = mono_jit_trace_calls;
  25         int include = 0;
  26         int i;
  27
  28         for (i = 0; i < trace_spec.len; i++){
  29                 MonoTraceOperation *op = &trace_spec.ops [i];
  30                 int inc = 0;
  31
  32                 switch (op->op){
  33                 case MONO_TRACEOP_ALL:
  34                         inc = 1; break;
  35                 case MONO_TRACEOP_PROGRAM:
  36                         if (method->klass->image == trace_spec.assembly->image)
  37                                 inc = 1; break;
  38                 case MONO_TRACEOP_METHOD:
  39                         if (mono_method_desc_match ((MonoMethodDesc *) op->data, method))
  40                                 inc = 1; break;
  41                 case MONO_TRACEOP_CLASS:
  42                         if (strcmp (method->klass->name_space, op->data) == 0)
  43                                 if (strcmp (method->klass->name, op->data2) == 0)
  44                                         inc = 1;
  45                         break;
  46                 case MONO_TRACEOP_ASSEMBLY:
  47                         if (strcmp (method->klass->image->assembly_name, op->data) == 0)
  48                                 inc = 1; break;
  49                 case MONO_TRACEOP_NAMESPACE:
  50                         if (strcmp (method->klass->name_space, op->data) == 0)
  51                                 inc = 1;
  52                 }
  53                 if (op->exclude){
  54                         if (inc)
  55                                 include = 0;
  56                 } else if (inc)
  57                         include = 1;
  58         }
  59         return include;
  60 }
  61
  62 static int is_filenamechar (char p)
  63 {
  64         if (p >= 'A' && p <= 'Z')
  65                 return TRUE;
  66         if (p >= 'a' && p <= 'z')
  67                 return TRUE;
  68         if (p == '.' || p == ':')
  69                 return TRUE;
  70         return FALSE;
  71 }
  72
  73 static char *input;
  74 static char *value;
  75
  76 static void get_string (void)
  77 {
  78         char *start = input;
  79         while (is_filenamechar (*input)){
  80                 input++;
  81         }
  82         if (value != NULL)
  83                 g_free (value);
  84         value = g_malloc (input - start + 1);
  85         strncpy (value, start, input-start);
  86         value [input-start] = 0;
  87 }
  88
  89 enum Token {
  90         TOKEN_METHOD,
  91         TOKEN_CLASS,
  92         TOKEN_ALL,
  93         TOKEN_PROGRAM,
  94         TOKEN_NAMESPACE,
  95         TOKEN_STRING,
  96         TOKEN_EXCLUDE,
  97         TOKEN_SEPARATOR,
  98         TOKEN_END,
  99         TOKEN_ERROR
 100 };
 101
 102 static int
 103 get_token (void)
 104 {
 105         while (*input != 0){
 106                 if (input [0] == 'M' && input [1] == ':'){
 107                         input += 2;
 108                         get_string ();
 109                         return TOKEN_METHOD;
 110                 }
 111                 if (input [0] == 'N' && input [1] == ':'){
 112                         input += 2;
 113                         get_string ();
 114                         return TOKEN_NAMESPACE;
 115                 }
 116                 if (input [0] == 'T' && input [1] == ':'){
 117                         input += 2;
 118                         get_string ();
 119                         return TOKEN_CLASS;
 120                 }
 121                 if (is_filenamechar (*input)){
 122                         get_string ();
 123                         if (strcmp (value, "all") == 0)
 124                                 return TOKEN_ALL;
 125                         if (strcmp (value, "program") == 0)
 126                                 return TOKEN_PROGRAM;
 127                         return TOKEN_STRING;
 128                 }
 129                 if (*input == '-'){
 130                         input++;
 131                         return TOKEN_EXCLUDE;
 132                 }
 133                 if (*input == ','){
 134                         input++;
 135                         return TOKEN_SEPARATOR;
 136                 }
 137                 input++;
 138
 139         }
 140         return TOKEN_END;
 141 }
 142
 143 static void
 144 cleanup (void)
 145 {
 146         if (value != NULL)
 147                 g_free (value);
 148 }
 149
 150 static int
 151 get_spec (int *last)
 152 {
 153         int token = get_token ();
 154         if (token == TOKEN_EXCLUDE){
 155                 token = get_spec (last);
 156                 if (token == TOKEN_EXCLUDE){
 157                         fprintf (stderr, "Expecting an expression");
 158                         return TOKEN_ERROR;
 159                 }
 160                 if (token == TOKEN_ERROR)
 161                         return token;
 162                 trace_spec.ops [(*last)-1].exclude = 1;
 163                 return TOKEN_SEPARATOR;
 164         }
 165         if (token == TOKEN_END || token == TOKEN_SEPARATOR || token == TOKEN_ERROR)
 166                 return token;
 167
 168         if (token == TOKEN_METHOD){
 169                 MonoMethodDesc *desc = mono_method_desc_new (value, TRUE);
 170                 if (desc == NULL){
 171                         fprintf (stderr, "Invalid method name: %s\n", value);
 172                         return TOKEN_ERROR;
 173                 }
 174                 trace_spec.ops [*last].op = MONO_TRACEOP_METHOD;
 175                 trace_spec.ops [*last].data = desc;
 176         } else if (token == TOKEN_ALL)
 177                 trace_spec.ops [*last].op = MONO_TRACEOP_ALL;
 178         else if (token == TOKEN_PROGRAM)
 179                 trace_spec.ops [*last].op = MONO_TRACEOP_PROGRAM;
 180         else if (token == TOKEN_NAMESPACE){
 181                 trace_spec.ops [*last].op = MONO_TRACEOP_NAMESPACE;
 182                 trace_spec.ops [*last].data = g_strdup (value);
 183         } else if (token == TOKEN_CLASS){
 184                 char *p = strrchr (value, '.');
 185                 *p++ = 0;
 186                 trace_spec.ops [*last].op = MONO_TRACEOP_CLASS;
 187                 trace_spec.ops [*last].data = g_strdup (value);
 188                 trace_spec.ops [*last].data2 = g_strdup (p);
 189         } else if (token == TOKEN_STRING){
 190                 trace_spec.ops [*last].op = MONO_TRACEOP_ASSEMBLY;
 191                 trace_spec.ops [*last].data = g_strdup (value);
 192         }
 193         else {
 194                 fprintf (stderr, "Syntax error in trace option specification\n");
 195                 return TOKEN_ERROR;
 196         }
 197         (*last)++;
 198         return TOKEN_SEPARATOR;
 199 }
 200
 201 static const char *xmap (int idx)
 202 {
 203         switch (idx){
 204         case MONO_TRACEOP_ALL: return "all";
 205         case MONO_TRACEOP_PROGRAM: return "program";
 206         case MONO_TRACEOP_METHOD: return "method";
 207         case MONO_TRACEOP_ASSEMBLY: return "assembly";
 208         case MONO_TRACEOP_CLASS: return "class";
 209         }
 210         return "UNKNOWN";
 211 }
 212
 213 MonoTraceSpec *
 214 mono_trace_parse_options (MonoAssembly *assembly, char *options)
 215 {
 216         char *p = options;
 217         int size = 1;
 218         int last_used;
 219         int exclude = 0;
 220         int token;
 221
 222         trace_spec.assembly = assembly;
 223
 224         if (*p == 0){
 225                 trace_spec.len = 1;
 226                 trace_spec.ops = g_new0 (MonoTraceOperation, 1);
 227                 trace_spec.ops [0].op = MONO_TRACEOP_ALL;
 228                 return &trace_spec;
 229         }
 230
 231         for (p = options; *p != 0; p++)
 232                 if (*p == ',')
 233                         size++;
 234
 235         trace_spec.ops = g_new0 (MonoTraceOperation, size);
 236
 237         input = options;
 238         last_used = 0;
 239
 240         while ((token = (get_spec (&last_used))) != TOKEN_END){
 241                 if (token == TOKEN_ERROR)
 242                         return NULL;
 243                 if (token == TOKEN_SEPARATOR)
 244                         continue;
 245         }
 246         trace_spec.len = last_used;
 247         cleanup ();
 248         return &trace_spec;
 249 }