X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=genevent-new%2Fgenevent.c;h=a478e03b0c308e3a703f9ad05d689708409f270e;hb=1684ba2ed5c10d89356e2fb8122a8b3eeeb9e0af;hp=124168d27efc51baeb7d12ef3d2e1ee7a96f6858;hpb=a67cd958dd88555bd8f2352d8ecfe2bc678e9d6f;p=lttv.git

diff --git a/genevent-new/genevent.c b/genevent-new/genevent.c
index 124168d2..a478e03b 100644
--- a/genevent-new/genevent.c
+++ b/genevent-new/genevent.c
@@ -86,11 +86,6 @@
 #define dprintf(...)
 #endif
 
-void preset_field_type_size(event_t *event_type,
-    off_t offset_root, off_t offset_parent,
-    enum field_status *fixed_root, enum field_status *fixed_parent,
-    field_t *field);
-
 /* Code printing */
 
 void print_tabs(unsigned int tabs, FILE *fd)
@@ -99,11 +94,6 @@ void print_tabs(unsigned int tabs, FILE *fd)
 		fprintf(fd, "\t");
 }
 
-/* Type size checking */
-/* Uses #error in the generated code to signal error and stop the compiler */
-int print_check(int fd);
-
-
 /* print type.
  *
  * Copied from construct_types_and_fields in LTTV facility.c */
@@ -161,7 +151,7 @@ int print_type(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 			fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]);
 			break;
 		case POINTER:
-			fprintf(fd, "void *");
+			fprintf(fd, "const void *");
 			break;
 		case LONG:
 			fprintf(fd, "long");
@@ -179,7 +169,7 @@ int print_type(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 			fprintf(fd, "off_t");
 			break;
 		case STRING:
-			fprintf(fd, "char *");
+			fprintf(fd, "const char *");
 			break;
 		case ENUM:
 			fprintf(fd, "enum lttng_%s", basename);
@@ -234,87 +224,87 @@ int print_arg(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 	switch(td->type) {
 		case INT_FIXED:
 			fprintf(fd, "%s", intOutputTypes[getSizeindex(td->size)]);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, "lttng_param_%s", field_name);
 			break;
 		case UINT_FIXED:
 			fprintf(fd, "%s", uintOutputTypes[getSizeindex(td->size)]);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, "lttng_param_%s", field_name);
 			break;
 		case CHAR:
 			fprintf(fd, "signed char");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case UCHAR:
 			fprintf(fd, "unsigned char");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case SHORT:
 			fprintf(fd, "short");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case USHORT:
 			fprintf(fd, "unsigned short");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case INT:
 			fprintf(fd, "int");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case UINT:
 			fprintf(fd, "unsigned int");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case FLOAT:
 			fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case POINTER:
-			fprintf(fd, "void *");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, "const void *");
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case LONG:
 			fprintf(fd, "long");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case ULONG:
 			fprintf(fd, "unsigned long");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case SIZE_T:
 			fprintf(fd, "size_t");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case SSIZE_T:
 			fprintf(fd, "ssize_t");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case OFF_T:
 			fprintf(fd, "off_t");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case STRING:
-			fprintf(fd, "char *");
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, "const char *");
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case ENUM:
 			fprintf(fd, "enum lttng_%s", basename);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case ARRAY:
 			fprintf(fd, "lttng_array_%s", basename);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 		case SEQUENCE:
 			fprintf(fd, "lttng_sequence_%s *", basename);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 	case STRUCT:
 			fprintf(fd, "struct lttng_%s *", basename);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 	case UNION:
 			fprintf(fd, "union lttng_%s *", basename);
-			fprintf(fd, " %s", field_name);
+			fprintf(fd, " lttng_param_%s", field_name);
 			break;
 	default:
 	 	 	printf("print_type : unknown type\n");
@@ -325,6 +315,67 @@ int print_arg(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 }
 
 
+/* Does the type has a fixed size ? (as know from the compiler)
+ *
+ * 1 : fixed size
+ * 0 : variable length
+ */
+int has_type_fixed_size(type_descriptor_t *td)
+{
+	switch(td->type) {
+		case INT_FIXED:
+		case UINT_FIXED:
+		case CHAR:
+		case UCHAR:
+		case SHORT:
+		case USHORT:
+		case INT:
+		case UINT:
+		case FLOAT:
+		case POINTER:
+		case LONG:
+		case ULONG:
+		case SIZE_T:
+		case SSIZE_T:
+		case OFF_T:
+		case ENUM:
+		case UNION: /* The union must have fixed size children. Must be checked by
+									 the parser */
+			return 1;
+			break;
+		case STRING:
+		case SEQUENCE:
+			return 0;
+			break;
+		case STRUCT:
+			{
+				int has_type_fixed = 0;
+				for(unsigned int i=0;i<td->fields.position;i++){
+					field_t *field = (field_t*)(td->fields.array[i]);
+					type_descriptor_t *type = field->type;
+					
+					has_type_fixed = has_type_fixed_size(type);
+					if(!has_type_fixed) return 0;
+				}
+				return 1;
+			}
+			break;
+		case ARRAY:
+			assert(td->size >= 0);
+			return has_type_fixed_size(((field_t*)td->fields.array[0])->type);
+			break;
+		case NONE:
+			printf("There is a type defined to NONE : bad.\n");
+			assert(0);
+			break;
+	}
+	return 0; //make gcc happy.
+}
+
+
+
+
+
 /* print type declaration.
  *
  * Copied from construct_types_and_fields in LTTV facility.c */
@@ -335,6 +386,8 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 	char basename[PATH_MAX];
 	unsigned int basename_len = 0;
 	
+	if(td->custom_write) return 0;	/* Does print custom type */
+	
 	strncpy(basename, nest_name, PATH_MAX);
 	basename_len = strlen(basename);
 	
@@ -360,7 +413,8 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 			fprintf(fd, " {\n");
 			for(unsigned int i=0;i<td->labels.position;i++){
 				print_tabs(1, fd);
-				fprintf(fd, "LTTNG_%s", ((char*)(td->labels.array[i])));
+				fprintf(fd, "LTTNG_%s = %d", ((char*)td->labels.array[i]),
+            (*(int*)td->labels_values.array[i]));
 				fprintf(fd, ",\n");
 			}
 			fprintf(fd, "};\n");
@@ -375,7 +429,7 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 				if(print_type_declaration(((field_t*)td->fields.array[0])->type,
 																	fd,	0, basename, "")) return 1;
 			}
-			fprintf(fd, "#define LTTNG_ARRAY_SIZE_%s %llu\n", basename,
+			fprintf(fd, "#define LTTNG_ARRAY_SIZE_%s %zu\n", basename,
 					td->size);
 			fprintf(fd, "typedef ");
 			if(print_type(((field_t*)td->fields.array[0])->type,
@@ -398,12 +452,16 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 			fprintf(fd, "struct lttng_sequence_%s", basename);
 			fprintf(fd, " {\n");
 			print_tabs(1, fd);
-			fprintf(fd, "unsigned int len;\n");
+			if(print_type(((field_t*)td->fields.array[0])->type,
+						fd, tabs, basename, "")) return 1;
+			fprintf(fd, " len;\n");
 			print_tabs(1, fd);
+			fprintf(fd, "const ");
 			if(print_type(((field_t*)td->fields.array[1])->type,
 						fd, tabs, basename, "")) return 1;
 			fprintf(fd, " *array;\n");
-			fprintf(fd, "};\n");
+			fprintf(fd, "};\n");	/* We do not LTT_ALIGN, because we never copy
+															 it to the buffer directly. */
 			fprintf(fd, "\n");
 		break;
 
@@ -428,11 +486,10 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 				fprintf(fd, "%s", field->name);
 				fprintf(fd, ";\n");
 			}
-			fprintf(fd, "};\n");
+			fprintf(fd, "} LTT_ALIGN;\n");
 			fprintf(fd, "\n");
 			break;
 	case UNION:
-			/* TODO : Do not allow variable length fields in a union */
 			for(unsigned int i=0;i<td->fields.position;i++){
 				field_t *field = (field_t*)(td->fields.array[i]);
 				type_descriptor_t *type = field->type;
@@ -453,7 +510,7 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 				fprintf(fd, "%s", field->name);
 				fprintf(fd, ";\n");
 			}
-			fprintf(fd, "};\n");
+			fprintf(fd, "} LTT_ALIGN;\n");
 			fprintf(fd, "\n");
 			break;
 	default:
@@ -465,358 +522,155 @@ int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 }
 
 
+/* print type alignment.
+ *
+ * Copied from construct_types_and_fields in LTTV facility.c
+ *
+ * basename is the name which identifies the type (along with a prefix
+ * (possibly)). */
 
-
-
-/*****************************************************************************
- *Function name
- *    set_named_type_offsets : set the precomputable offset of the named type
- *Input params 
- *    type : the type
- ****************************************************************************/
-void set_named_type_offsets(type_descriptor_t *type)
+int print_type_alignment(type_descriptor_t * td, FILE *fd, unsigned int tabs,
+		char *nest_name, char *field_name, char *obj_prefix)
 {
-  enum field_status	current_child_status = FIELD_FIXED_GENEVENT;
-	off_t current_offset = 0;
-
-	preset_type_size(
-			current_offset,
-			&current_child_status,
-			type);
-	if(current_child_status == FIELD_FIXED_GENEVENT) {
-		current_offset += type->size;
+	char basename[PATH_MAX];
+	unsigned int basename_len = 0;
+	
+	strncpy(basename, nest_name, PATH_MAX);
+	basename_len = strlen(basename);
+	
+	/* For a named type, we use the type_name directly */
+	if(td->type_name != NULL) {
+		strncpy(basename, td->type_name, PATH_MAX);
+		basename_len = strlen(basename);
 	} else {
-		current_offset = 0;
+		/* For a unnamed type, there must be a field name, except for
+		 * the array. */
+		if((basename_len != 0)
+				&& (basename[basename_len-1] != '_'
+				&& field_name != NULL
+				&& (field_name[0] != '\0'))) {
+			strncat(basename, "_", PATH_MAX - basename_len);
+			basename_len = strlen(basename);
+		}
+		if(field_name != NULL)
+			strncat(basename, field_name, PATH_MAX - basename_len);
 	}
-}
-
-
-/*****************************************************************************
- *Function name
- *    set_event_fields_offsets : set the precomputable offset of the fields
- *Input params 
- *    event           : the event
- ****************************************************************************/
-void set_event_fields_offsets(event_t *event)
-{
-  enum field_status current_child_status = FIELD_FIXED;
-	off_t current_offset = 0;
-
-	for(unsigned int i = 0; i < event->type->fields.position; i++) {
-		/* For each field, set the field offset. */
-		field_t *child_field = (field_t*)event->type->fields.array[i];
-		type_descriptor_t *t = f->type;
-		/* Skip named types */
-		if(t->type_name != NULL) continue;
-
-    preset_type_size(
-				current_offset,
-        &current_child_status,
-        t);
-		if(current_child_status == FIELD_FIXED_GENEVENT) {
-			current_offset += type->size;
-		} else {
-			current_offset = 0;
+	
+	if(field_name[0] == '\0') {
+		/* We are in a write function : it's the obj that we must align. */
+		switch(td->type) {
+			case SEQUENCE:
+				fprintf(fd, "lttng_get_alignment_sequence_%s(%s)", basename,
+						obj_prefix);
+				break;
+			case STRUCT:
+				fprintf(fd, "lttng_get_alignment_struct_%s(%s)", basename,
+						obj_prefix);
+				break;
+			case UNION:
+				fprintf(fd, "lttng_get_alignment_union_%s(%s)", basename,
+						obj_prefix);
+				break;
+			case ARRAY:
+				fprintf(fd, "lttng_get_alignment_array_%s(%s)", basename,
+						obj_prefix);
+			case STRING:
+				fprintf(fd, "sizeof(char)");
+				break;
+			case INT_FIXED:
+			case UINT_FIXED:
+			case CHAR:
+			case UCHAR:
+			case SHORT:
+			case USHORT:
+			case INT:
+			case UINT:
+			case FLOAT:
+			case POINTER:
+			case LONG:
+			case ULONG:
+			case SIZE_T:
+			case SSIZE_T:
+			case OFF_T:
+			case ENUM:
+				fprintf(fd, "sizeof(");
+				if(print_type(td, fd, 0, basename, "")) return 1;
+				fprintf(fd, ")");
+				break;
+
+			default:
+				printf("error : type unexpected\n");
+				return 1;
+				break;
+		}
+	} else {
+		
+		switch(td->type) {
+			case INT_FIXED:
+			case UINT_FIXED:
+			case CHAR:
+			case UCHAR:
+			case SHORT:
+			case USHORT:
+			case INT:
+			case UINT:
+			case FLOAT:
+			case POINTER:
+			case LONG:
+			case ULONG:
+			case SIZE_T:
+			case SSIZE_T:
+			case OFF_T:
+			case ENUM:
+				fprintf(fd, "sizeof(");
+				if(print_type(td, fd, 0, basename, "")) return 1;
+				fprintf(fd, ")");
+				break;
+			case STRING:
+				fprintf(fd, "sizeof(char)");
+				break;
+			case SEQUENCE:
+				fprintf(fd, "lttng_get_alignment_sequence_%s(&%s%s)", basename,
+						obj_prefix, field_name);
+				break;
+			case STRUCT:
+				fprintf(fd, "lttng_get_alignment_struct_%s(&%s%s)", basename,
+						obj_prefix, field_name);
+				break;
+			case UNION:
+				fprintf(fd, "lttng_get_alignment_union_%s(&%s%s)", basename,
+						obj_prefix, field_name);
+				break;
+			case ARRAY:
+				fprintf(fd, "lttng_get_alignment_array_%s(%s%s)", basename,
+						obj_prefix, field_name);
+				break;
+			case NONE:
+				printf("error : type NONE unexpected\n");
+				return 1;
+				break;
 		}
 	}
+	
+	return 0;
 }
 
-
-
-/*****************************************************************************
- *Function name
- *    print_type_size : print the fixed sizes of the field type
- *    taken from LTTV.
+/* print type write.
  *
- *    use offset_parent as offset to calculate alignment.
- *Input params 
- *    offset_parent   : offset from the parent
- *    fixed_parent    : Do we know a fixed offset to the parent ?
- *    type 	          : type
- ****************************************************************************/
-void print_type_size(
-    off_t offset_parent,
-    enum field_status *fixed_parent,
-    type_descriptor_t *type,
-		FILE *fd,
-		char *size_name)
-{
-  enum field_status local_fixed_parent;
-  guint i;
-  
-  g_assert(type->fixed_size == FIELD_UNKNOWN);
-
-  size_t current_offset;
-  enum field_status current_child_status, final_child_status;
-  size_t max_size;
-
-  switch(type->type) {
-			/* type sizes known by genevent/compiler */
-		case INT_FIXED:
-		case UINT_FIXED:
-    case FLOAT:
-		case CHAR:
-		case UCHAR:
-		case SHORT:
-		case USHORT:
-			/* Align */
-			fprintf(fd, "%s += ltt_align(%s, %s)", size_name);
-			/* Data */
-      type->fixed_size = FIELD_FIXED_GENEVENT;
-      break;
-			/* host type sizes unknown by genevent, but known by the compiler */
-    case INT:
-    case UINT:
-    case ENUM:
-			/* An enum is either : char or int. In gcc, always int. Hope
-			 * it's always like this. */
-			type->fixed_size = FIELD_FIXED_COMPILER;
-			type->compiler_size = COMPILER_INT;
-			break;
-    case LONG:
-    case ULONG:
-			type->fixed_size = FIELD_FIXED_COMPILER;
-			type->compiler_size = COMPILER_LONG;
-			break;
-    case POINTER:
-			type->fixed_size = FIELD_FIXED_COMPILER;
-			type->compiler_size = COMPILER_POINTER;
-			break;
-    case SIZE_T:
-    case SSIZE_T:
-    case OFF_T:
-			type->fixed_size = FIELD_FIXED_COMPILER;
-			type->compiler_size = COMPILER_SIZE_T;
-			break;
-			/* compound types :
-			 * if all children has fixed size, then the parent size can be
-			 * known directly and the copy can be done efficiently.
-			 * if only part of the children has fixed size, then the contiguous
-			 * elements will be copied in one bulk, but the variable size elements
-			 * will be copied separately. This is necessary because those variable
-			 * size elements are referenced by pointer in C.
-			 */
-    case SEQUENCE:
-      current_offset = 0;
-      local_fixed_parent = FIELD_FIXED_GENEVENT;
-      preset_type_size(
-        0,
-        &local_fixed_parent,
-        ((field_t*)type->fields.array[0])->type);
-      preset_field_type_size(
-        0,
-        &local_fixed_parent,
-        ((field_t*)type->fields.array[1])->type);
-      type->fixed_size = FIELD_VARIABLE;
-      *fixed_parent = FIELD_VARIABLE;
-      break;
-    case LTT_STRING:
-      field->fixed_size = FIELD_VARIABLE;
-      *fixed_parent = FIELD_VARIABLE;
-      break;
-    case LTT_ARRAY:
-      local_fixed_parent = FIELD_FIXED_GENEVENT;
-      preset_type_size(
-        0,
-        &local_fixed_parent,
-        ((field_t*)type->fields.array[0])->type);
-      type->fixed_size = local_fixed_parent;
-      if(type->fixed_size == FIELD_FIXED_GENEVENT) {
-        type->size =
-					type->element_number * ((field_t*)type->fields.array[0])->type->size;
-      } else if(type->fixed_size == FIELD_FIXED_COMPILER) {
-        type->size =
-					type->element_number;
-      } else {
-        type->size = 0;
-        *fixed_parent = FIELD_VARIABLE;
-      }
-      break;
-    case LTT_STRUCT:
-      current_offset = 0;
-      current_child_status = FIELD_FIXED_GENEVENT;
-      for(i=0;i<type->element_number;i++) {
-        preset_field_type_size(
-          current_offset, 
-          &current_child_status,
-          ((field_t*)type->fields.array[i])->type);
-        if(current_child_status == FIELD_FIXED_GENEVENT) {
-          current_offset += field->child[i]->field_size;
-        } else {
-          current_offset = 0;
-        }
-      }
-      if(current_child_status != FIELD_FIXED_GENEVENT) {
-        *fixed_parent = current_child_status;
-        type->size = 0;
-        type->fixed_size = current_child_status;
-      } else {
-        type->size = current_offset;
-        type->fixed_size = FIELD_FIXED_GENEVENT;
-      }
-      break;
-    case LTT_UNION:
-      current_offset = 0;
-      max_size = 0;
-      final_child_status = FIELD_FIXED_GENEVENT;
-      for(i=0;i<type->element_number;i++) {
-        enum field_status current_child_status = FIELD_FIXED;
-        preset_field_type_size(
-          current_offset, 
-          &current_child_status,
-          ((field_t*)type->fields.array[i])->type);
-        if(current_child_status != FIELD_FIXED_GENEVENT)
-          final_child_status = current_child_status;
-        else
-          max_size =
-						max(max_size, ((field_t*)type->fields.array[i])->type->size);
-      }
-      if(final_child_status != FIELD_FIXED_GENEVENT AND COMPILER) {
-				g_error("LTTV does not support variable size fields in unions.");
-				/* This will stop the application. */
-        *fixed_parent = final_child_status;
-        type->size = 0;
-        type->fixed_size = current_child_status;
-      } else {
-        type->size = max_size;
-        type->fixed_size = FIELD_FIXED_GENEVENT;
-      }
-      break;
-  }
-
-}
-
-
-size_t get_field_type_size(LttTracefile *tf, LttEventType *event_type,
-    off_t offset_root, off_t offset_parent,
-    LttField *field, void *data)
-{
-  size_t size = 0;
-  guint i;
-  LttType *type;
-  
-  g_assert(field->fixed_root != FIELD_UNKNOWN);
-  g_assert(field->fixed_parent != FIELD_UNKNOWN);
-  g_assert(field->fixed_size != FIELD_UNKNOWN);
-
-  field->offset_root = offset_root;
-  field->offset_parent = offset_parent;
-  
-  type = field->field_type;
-
-  switch(type->type_class) {
-    case LTT_INT:
-    case LTT_UINT:
-    case LTT_FLOAT:
-    case LTT_ENUM:
-    case LTT_POINTER:
-    case LTT_LONG:
-    case LTT_ULONG:
-    case LTT_SIZE_T:
-    case LTT_SSIZE_T:
-    case LTT_OFF_T:
-      g_assert(field->fixed_size == FIELD_FIXED);
-      size = field->field_size;
-      break;
-    case LTT_SEQUENCE:
-      {
-        gint seqnum = ltt_get_uint(LTT_GET_BO(tf),
-                        field->sequ_number_size,
-                        data + offset_root);
-
-        if(field->child[0]->fixed_size == FIELD_FIXED) {
-          size = field->sequ_number_size + 
-            (seqnum * get_field_type_size(tf, event_type,
-                                          offset_root, offset_parent,
-                                          field->child[0], data));
-        } else {
-          size += field->sequ_number_size;
-          for(i=0;i<seqnum;i++) {
-            size_t child_size;
-            child_size = get_field_type_size(tf, event_type,
-                                    offset_root, offset_parent,
-                                    field->child[0], data);
-            offset_root += child_size;
-            offset_parent += child_size;
-            size += child_size;
-          }
-        }
-        field->field_size = size;
-      }
-      break;
-    case LTT_STRING:
-      size = strlen((char*)(data+offset_root)) + 1;// length + \0
-      field->field_size = size;
-      break;
-    case LTT_ARRAY:
-      if(field->fixed_size == FIELD_FIXED)
-        size = field->field_size;
-      else {
-        for(i=0;i<field->field_type->element_number;i++) {
-          size_t child_size;
-          child_size = get_field_type_size(tf, event_type,
-                                  offset_root, offset_parent,
-                                  field->child[0], data);
-          offset_root += child_size;
-          offset_parent += child_size;
-          size += child_size;
-        }
-        field->field_size = size;
-      }
-      break;
-    case LTT_STRUCT:
-      if(field->fixed_size == FIELD_FIXED)
-        size = field->field_size;
-      else {
-        size_t current_root_offset = offset_root;
-        size_t current_offset = 0;
-        size_t child_size = 0;
-        for(i=0;i<type->element_number;i++) {
-          child_size = get_field_type_size(tf,
-                     event_type, current_root_offset, current_offset, 
-                     field->child[i], data);
-          current_offset += child_size;
-          current_root_offset += child_size;
-          
-        }
-        size = current_offset;
-        field->field_size = size;
-      }
-      break;
-    case LTT_UNION:
-      if(field->fixed_size == FIELD_FIXED)
-        size = field->field_size;
-      else {
-        size_t current_root_offset = field->offset_root;
-        size_t current_offset = 0;
-        for(i=0;i<type->element_number;i++) {
-          size = get_field_type_size(tf, event_type,
-                 current_root_offset, current_offset, 
-                 field->child[i], data);
-          size = max(size, field->child[i]->field_size);
-        }
-        field->field_size = size;
-      }
-      break;
-  }
-
-  return size;
-}
-
-
-
-
+ * Copied from construct_types_and_fields in LTTV facility.c
+ *
+ * basename is the name which identifies the type (along with a prefix
+ * (possibly)). */
 
-/* Print the code that calculates the length of an field */
-int print_field_len(type_descriptor_t * td, FILE *fd, unsigned int tabs,
-		char *nest_type_name, char *nest_field_name, char *field_name, 
-		char *output_var, char *member_var)
+int print_type_write(type_descriptor_t * td, FILE *fd, unsigned int tabs,
+		char *nest_name, char *field_name, char *obj_prefix, int get_ptr)
 {
-	/* Type name : basename */
 	char basename[PATH_MAX];
 	unsigned int basename_len = 0;
-
-	strcpy(basename, nest_type_name);
+	char get_ptr_char[2] = "";
+	char custom[PATH_MAX] = "";
+	
+	strncpy(basename, nest_name, PATH_MAX);
 	basename_len = strlen(basename);
 	
 	/* For a named type, we use the type_name directly */
@@ -824,28 +678,24 @@ int print_field_len(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 		strncpy(basename, td->type_name, PATH_MAX);
 		basename_len = strlen(basename);
 	} else {
-		/* For a unnamed type, there must be a field name */
+		/* For a unnamed type, there must be a field name, except for
+		 * the array. */
 		if((basename_len != 0)
-				&& (basename[basename_len-1] != '_')
-				&& (field_name[0] != '\0')) {
+				&& (basename[basename_len-1] != '_'
+				&& (field_name[0] != '\0'))) {
 			strncat(basename, "_", PATH_MAX - basename_len);
 			basename_len = strlen(basename);
 		}
 		strncat(basename, field_name, PATH_MAX - basename_len);
 	}
 	
-	/* Field name : basefieldname */
-	char basefieldname[PATH_MAX];
-	unsigned int basefieldname_len = 0;
-
-	strcpy(basefieldname, nest_field_name);
-	basefieldname_len = strlen(basefieldname);
-	
-	/* there must be a field name */
-	strncat(basefieldname, field_name, PATH_MAX - basefieldname_len);
-	basefieldname_len = strlen(basefieldname);
+	if(get_ptr) {
+		strcpy(get_ptr_char, "&");
+	}
 
-	print_tabs(tabs, fd);
+	if(td->custom_write) {
+		strcpy(custom, "_custom");
+	}
 
 	switch(td->type) {
 		case INT_FIXED:
@@ -864,53 +714,109 @@ int print_field_len(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 		case SSIZE_T:
 		case OFF_T:
 		case ENUM:
-			fprintf(fd, "/* Size of %s */", field_name);
 			print_tabs(tabs, fd);
-			fprintf(fd, "%s = sizeof(", member_var);
-			if(print_type(td, fd, tabs, basename, "")) return 1;
-			fprintf(fd, ");\n");
-			fprintf(fd, "%s += ltt_align(%s, %s);\n", output_var, member_var);
+			fprintf(fd, "align = ");
+			if(print_type_alignment(td, fd, 0, basename, "", "obj")) return 1;
+			fprintf(fd, ";\n");
+			fprintf(fd, "\n");
+			print_tabs(tabs, fd);
+			fprintf(fd, "if(*len == 0) {\n");
+			print_tabs(tabs+1, fd);
+			fprintf(fd, "*to += ltt_align(*to, align); /* align output */\n");
+			print_tabs(tabs, fd);
+			fprintf(fd, "} else {\n");
+			print_tabs(tabs+1, fd);
+			fprintf(fd, "*len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */\n");
+			print_tabs(tabs, fd);
+			fprintf(fd, "}\n");
+			fprintf(fd, "\n");
+
 			print_tabs(tabs, fd);
-			fprintf(fd, "%s += %s;\n", output_var, member_var);
+			fprintf(fd, "*len += ");
+			fprintf(fd, "sizeof(");
+			if(print_type(td, fd, 0, basename, "")) return 1;
+			fprintf(fd, ");\n");
+
 			break;
 		case STRING:
-			/* strings are made of bytes : no alignment. */
-			fprintf(fd, "/* Size of %s */", basefieldname);
 			print_tabs(tabs, fd);
-			fprintf(fd, "%s = strlen(%s);", member_var, basefieldname);
+			fprintf(fd,
+					"lttng_write%s_string_%s(buffer, to_base, to, from, len, %s%s);\n",
+					custom, basename, obj_prefix, field_name);
+			break;
+		case SEQUENCE:
+			print_tabs(tabs, fd);
+			fprintf(fd,
+					"lttng_write%s_sequence_%s(buffer, to_base, to, from, len, %s%s%s);",
+					custom, basename, get_ptr_char, obj_prefix, field_name);
+			break;
+		case STRUCT:
+			print_tabs(tabs, fd);
+			fprintf(fd,
+					"lttng_write%s_struct_%s(buffer, to_base, to, from, len, %s%s%s);",
+					custom, basename, get_ptr_char, obj_prefix, field_name);
+			break;
+		case UNION:
+			print_tabs(tabs, fd);
+			fprintf(fd,
+					"lttng_write%s_union_%s(buffer, to_base, to, from, len, %s%s%s);",
+					custom, basename, get_ptr_char, obj_prefix, field_name);
 			break;
 		case ARRAY:
-			fprintf(fd, "/* Size of %s */", basefieldname);
 			print_tabs(tabs, fd);
+			fprintf(fd,
+					"lttng_write%s_array_%s(buffer, to_base, to, from, len, %s%s);",
+					custom, basename, obj_prefix, field_name);
+			break;
+		case NONE:
+			printf("Error : type NONE unexpected\n");
+			return 1;
+			break;
+	}
 
-			strncat(basefieldname, ".", PATH_MAX - basefieldname_len);
-			basefieldname_len = strlen(basefieldname);
-
-			if(print_field_len(((field_t*)td->fields.array[0])->type,
-						fd, tabs,
-						basename, basefieldname,
-						output_var, member_var)) return 1;
+	return 0;
+}
 
-			fprintf(fd, "%s = strlen(%s);", member_var, basefieldname);
+/* print need local vars ?.
+ *
+ * Copied from print_type_write
+ *
+ * Does the type_write call needs local size and from variables ?
+ * return value : 1 yes, 0 no.
+ */
 
-			fprintf(fd, "lttng_array_%s", basename);
-			fprintf(fd, " %s", field_name);
+int has_type_local(type_descriptor_t * td)
+{
+	switch(td->type) {
+		case INT_FIXED:
+		case UINT_FIXED:
+		case CHAR:
+		case UCHAR:
+		case SHORT:
+		case USHORT:
+		case INT:
+		case UINT:
+		case FLOAT:
+		case POINTER:
+		case LONG:
+		case ULONG:
+		case SIZE_T:
+		case SSIZE_T:
+		case OFF_T:
+		case ENUM:
+			return 1;
 			break;
+		case STRING:
 		case SEQUENCE:
-			fprintf(fd, "lttng_sequence_%s *", basename);
-			fprintf(fd, " %s", field_name);
-			break;
-	case STRUCT:
-			fprintf(fd, "struct lttng_%s *", basename);
-			fprintf(fd, " %s", field_name);
-			break;
-	case UNION:
-			fprintf(fd, "union lttng_%s *", basename);
-			fprintf(fd, " %s", field_name);
+		case STRUCT:
+		case UNION:
+		case ARRAY:
+			return 0;
 			break;
-	default:
-	 	 	printf("print_type : unknown type\n");
+		case NONE:
+			printf("Error : type NONE unexpected\n");
 			return 1;
+			break;
 	}
 
 	return 0;
@@ -918,76 +824,1267 @@ int print_field_len(type_descriptor_t * td, FILE *fd, unsigned int tabs,
 
 
 
+/* print type alignment function.
+ *
+ * Copied from construct_types_and_fields in LTTV facility.c
+ *
+ * basename is the name which identifies the type (along with a prefix
+ * (possibly)). */
 
-/* Print the logging function of an event. This is the core of genevent */
-int print_event_logging_function(char *basename, event_t *event, FILE *fd)
+int print_type_alignment_fct(type_descriptor_t * td, FILE *fd,
+		unsigned int tabs,
+		char *nest_name, char *field_name)
 {
-	fprintf(fd, "static inline void trace_%s(\n", basename);
-	for(unsigned int j = 0; j < event->fields.position; j++) {
-		/* For each field, print the function argument */
-		field_t *f = (field_t*)event->fields.array[j];
-		type_descriptor_t *t = f->type;
-		if(print_arg(t, fd, 2, basename, f->name)) return 1;
-		if(j < event->fields.position-1) {
-			fprintf(fd, ",");
-			fprintf(fd, "\n");
-		}
-	}
-	if(event->fields.position == 0) {
-		print_tabs(2, fd);
-		fprintf(fd, "void");
-	}
-	fprintf(fd,")\n");
-	fprintf(fd, "#ifndef CONFIG_LTT\n");
-	fprintf(fd, "{\n");
-	fprintf(fd, "}\n");
-	fprintf(fd,"#else\n");
-	fprintf(fd, "{\n");
-	/* Print the function variables */
-	print_tabs(1, fd);
-	fprintf(fd, "size_t member_length;");
-	fprintf(fd, "size_t event_length = 0;");
+	char basename[PATH_MAX];
+	unsigned int basename_len = 0;
 	
-	/* Calculate event variable len + event data alignment offset.
-	 * Assume that the padding for alignment starts at a void*
-	 * address.
-	 * This excludes the header size and alignment. */
-
+	if(td->custom_write) return 0;	/* Does print custom type */
 
-	for(unsigned int j = 0; j < event->fields.position; j++) {
-		/* For each field, calculate the field size. */
-		field_t *f = (field_t*)event->fields.array[j];
-		type_descriptor_t *t = f->type;
-		if(print_field_len(t, fd, 1, basename, "", 
-					f->name,
-					"event_length",
-					"member_length")) return 1;
-		if(j < event->fields.position-1) {
-			fprintf(fd, ",");
-			fprintf(fd, "\n");
+	strncpy(basename, nest_name, PATH_MAX);
+	basename_len = strlen(basename);
+	
+	/* For a named type, we use the type_name directly */
+	if(td->type_name != NULL) {
+		strncpy(basename, td->type_name, PATH_MAX);
+		basename_len = strlen(basename);
+	} else {
+		/* For a unnamed type, there must be a field name, except for
+		 * the array. */
+		if((basename_len != 0)
+				&& (basename[basename_len-1] != '_'
+				&& (field_name[0] != '\0'))) {
+			strncat(basename, "_", PATH_MAX - basename_len);
+			basename_len = strlen(basename);
 		}
+		strncat(basename, field_name, PATH_MAX - basename_len);
 	}
-
-	/* Take locks : make sure the trace does not vanish while we write on
-	 * it. A simple preemption disabling is enough (using rcu traces). */
-	
-	/* For each trace */
 	
-	/* Relay reserve */
-	/* If error, increment counter and return */
-	
-	/* write data */
-		
-	/* commit */
+	switch(td->type) {
+		case SEQUENCE:
+			/* Function header */
+			fprintf(fd, "static inline size_t lttng_get_alignment_sequence_%s(\n",
+					basename);
+			print_tabs(2, fd);
+			if(print_type(td,	fd, 0, basename, "")) return 1;
+			fprintf(fd, " *obj)\n");
+			fprintf(fd, "{\n");
+			print_tabs(1, fd);
+			fprintf(fd, "size_t align=0, localign;");
+			fprintf(fd, "\n");
+			print_tabs(1, fd);
+			fprintf(fd, "localign = ");
+			if(print_type_alignment(((field_t*)td->fields.array[0])->type,
+						fd, 0, basename, "len", "obj->")) return 1;
+			fprintf(fd, ";\n");
+			print_tabs(1, fd);
+			fprintf(fd, "align = max(align, localign);\n");
+			fprintf(fd, "\n");
+			print_tabs(1, fd);
+			fprintf(fd, "localign = ");
+			if(print_type_alignment(((field_t*)td->fields.array[1])->type,
+						fd, 0, basename, "array[0]", "obj->")) return 1;
+			fprintf(fd, ";\n");
+			print_tabs(1, fd);
+			fprintf(fd, "align = max(align, localign);\n");
+			fprintf(fd, "\n");
+			print_tabs(1, fd);
+			fprintf(fd, "return align;\n");
+			break;
+		case STRUCT:
+			/* Function header */
+			fprintf(fd, "static inline size_t lttng_get_alignment_struct_%s(\n",
+					basename);
+			print_tabs(2, fd);
+			if(print_type(td,	fd, 0, basename, "")) return 1;
+			fprintf(fd, " *obj)\n");
+			fprintf(fd, "{\n");
+			print_tabs(1, fd);
+			fprintf(fd, "size_t align=0, localign;");
+			fprintf(fd, "\n");
+			for(unsigned int i=0;i<td->fields.position;i++){
+				field_t *field = (field_t*)(td->fields.array[i]);
+				type_descriptor_t *type = field->type;
+				print_tabs(1, fd);
+				fprintf(fd, "localign = ");
+				if(print_type_alignment(type, fd, 0, basename, field->name, "obj->"))
+					return 1;
+				fprintf(fd, ";\n");
+				print_tabs(1, fd);
+				fprintf(fd, "align = max(align, localign);\n");
+				fprintf(fd, "\n");
+			}
+			print_tabs(1, fd);
+			fprintf(fd, "return align;\n");
+
+			break;
+		case UNION:
+			/* Function header */
+			fprintf(fd, "static inline size_t lttng_get_alignment_union_%s(\n",
+					basename);
+			print_tabs(2, fd);
+			if(print_type(td,	fd, 0, basename, "")) return 1;
+			fprintf(fd, " *obj)\n");
+			fprintf(fd, "{\n");
+			print_tabs(1, fd);
+			fprintf(fd, "size_t align=0, localign;");
+			fprintf(fd, "\n");
+			for(unsigned int i=0;i<td->fields.position;i++){
+				field_t *field = (field_t*)(td->fields.array[i]);
+				type_descriptor_t *type = field->type;
+				print_tabs(1, fd);
+				fprintf(fd, "localign = ");
+				if(print_type_alignment(type, fd, 0, basename, field->name, "obj->"))
+					return 1;
+				fprintf(fd, ";\n");
+				print_tabs(1, fd);
+				fprintf(fd, "align = max(align, localign);\n");
+				fprintf(fd, "\n");
+			}
+			print_tabs(1, fd);
+			fprintf(fd, "return align;\n");
+
+			break;
+		case ARRAY:
+			/* Function header */
+			fprintf(fd, "static inline size_t lttng_get_alignment_array_%s(\n",
+					basename);
+			print_tabs(2, fd);
+			if(print_type(td,	fd, 0, basename, "")) return 1;
+			fprintf(fd, " obj)\n");
+			fprintf(fd, "{\n");
+			print_tabs(1, fd);
+			fprintf(fd, "return \n");
+			if(print_type_alignment(((field_t*)td->fields.array[0])->type,
+						fd, 0, basename, "", "obj[0]"))
+				return 1;
+			fprintf(fd, ";\n");
+			break;
+		default:
+			dprintf("print_type_alignment_fct : type has no alignment function.\n");
+			return 0;
+			break;
+	}
+
+
+	/* Function footer */
+	fprintf(fd, "}\n");
+	fprintf(fd, "\n");
+
+	return 0;
+}
+
+/* print type write function.
+ *
+ * Copied from construct_types_and_fields in LTTV facility.c
+ *
+ * basename is the name which identifies the type (along with a prefix
+ * (possibly)). */
+
+int print_type_write_fct(type_descriptor_t * td, FILE *fd, unsigned int tabs,
+		char *nest_name, char *field_name)
+{
+	char basename[PATH_MAX];
+	unsigned int basename_len = 0;
+	
+	if(td->custom_write) return 0;	/* Does print custom type */
+
+	strncpy(basename, nest_name, PATH_MAX);
+	basename_len = strlen(basename);
+	
+	/* For a named type, we use the type_name directly */
+	if(td->type_name != NULL) {
+		strncpy(basename, td->type_name, PATH_MAX);
+		basename_len = strlen(basename);
+	} else {
+		/* For a unnamed type, there must be a field name, except for
+		 * the array. */
+		if((basename_len != 0)
+				&& (basename[basename_len-1] != '_'
+				&& (field_name[0] != '\0'))) {
+			strncat(basename, "_", PATH_MAX - basename_len);
+			basename_len = strlen(basename);
+		}
+		strncat(basename, field_name, PATH_MAX - basename_len);
+	}
+	
+	switch(td->type) {
+		case SEQUENCE:
+		case STRUCT:
+		case UNION:
+		case ARRAY:
+		case STRING:
+			break;
+		default:
+			dprintf("print_type_write_fct : type has no write function.\n");
+			return 0;
+			break;
+	}
+	
+	/* Print header */
+	switch(td->type) {
+		case SEQUENCE:
+			fprintf(fd, "static inline void lttng_write_sequence_%s(\n",
+					basename);
+			break;
+		case STRUCT:
+			fprintf(fd, "static inline void lttng_write_struct_%s(\n", basename);
+			break;
+		case UNION:
+			fprintf(fd, "static inline void lttng_write_union_%s(\n", basename);
+			break;
+		case ARRAY:
+			fprintf(fd, "static inline void lttng_write_array_%s(\n", basename);
+			break;
+		case STRING:
+			fprintf(fd, "static inline void lttng_write_string_%s(\n", basename);
+			break;
+		default:
+			printf("print_type_write_fct : type has no write function.\n");
+			break;
+	}
+
+	print_tabs(2, fd);
+	fprintf(fd, "void *buffer,\n");
+	print_tabs(2, fd);
+	fprintf(fd, "size_t *to_base,\n");
+	print_tabs(2, fd);
+	fprintf(fd, "size_t *to,\n");
+	print_tabs(2, fd);
+	fprintf(fd, "const void **from,\n");
+	print_tabs(2, fd);
+	fprintf(fd, "size_t *len,\n");
+	print_tabs(2, fd);
+	if(print_type(td,	fd, 0, basename, "")) return 1;
+
+	switch(td->type) {
+		case SEQUENCE:
+			fprintf(fd, " *obj)\n");
+			break;
+		case STRUCT:
+			fprintf(fd, " *obj)\n");
+			break;
+		case UNION:
+			fprintf(fd, " *obj)\n");
+			break;
+		case ARRAY:
+			fprintf(fd, " obj)\n");
+			break;
+		case STRING:
+			fprintf(fd, " obj)\n");
+			break;
+		default:
+			printf("print_type_write_fct : type has no write function.\n");
+			break;
+	}
+
+	fprintf(fd, "{\n");
+
+	switch(td->type) {
+		case STRING:
+			print_tabs(1, fd);
+			fprintf(fd, "size_t size;\n");
+			break;
+		default:
+			break;
+	}
+
+	print_tabs(1, fd);
+	fprintf(fd, "size_t align;\n");
+	fprintf(fd, "\n");
+
+	switch(td->type) {
+		case SEQUENCE:
+		case STRING:
+			print_tabs(1, fd);
+			fprintf(fd, "/* Flush pending memcpy */\n");
+			print_tabs(1, fd);
+			fprintf(fd, "if(*len != 0) {\n");
+			print_tabs(2, fd);
+			fprintf(fd, "if(buffer != NULL)\n");
+			print_tabs(3, fd);
+			fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n");
+			print_tabs(1, fd);
+			fprintf(fd, "}\n");
+			print_tabs(1, fd);
+			fprintf(fd, "*to += *len;\n");
+			print_tabs(1, fd);
+			fprintf(fd, "*len = 0;\n");
+			fprintf(fd, "\n");
+			break;
+		case STRUCT:
+		case UNION:
+		case ARRAY:
+			break;
+		default:
+			printf("print_type_write_fct : type has no write function.\n");
+			break;
+	}
+	
+	print_tabs(1, fd);
+	fprintf(fd, "align = ");
+	if(print_type_alignment(td, fd, 0, basename, "", "obj")) return 1;
+	fprintf(fd, ";\n");
+	fprintf(fd, "\n");
+	print_tabs(1, fd);
+	fprintf(fd, "if(*len == 0) {\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*to += ltt_align(*to, align); /* align output */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "} else {\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "}\n");
+	fprintf(fd, "\n");
+
+	/* First, check if the type has a fixed size. If it is the case, then the size
+	 * to write is know by the compiler : simply use a sizeof() */
+	if(has_type_fixed_size(td)) {
+		print_tabs(1, fd);
+		fprintf(fd, "/* Contains only fixed size fields : use compiler sizeof() */\n");
+		fprintf(fd, "\n");
+		print_tabs(1, fd);
+		fprintf(fd, "*len += sizeof(");
+		if(print_type(td, fd, 0, basename, field_name)) return 1;
+		fprintf(fd, ");\n");
+	} else {
+		/* The type contains nested variable size subtypes :
+		 * we must write field by field. */
+		print_tabs(1, fd);
+		fprintf(fd, "/* Contains variable sized fields : must explode the structure */\n");
+		fprintf(fd, "\n");
+
+		switch(td->type) {
+			case SEQUENCE:
+				print_tabs(1, fd);
+				fprintf(fd, "/* Copy members */\n");
+//				print_tabs(1, fd);
+//				fprintf(fd, "size = sizeof(\n");
+				if(print_type_write(((field_t*)td->fields.array[0])->type,
+						fd, 1, basename, "len", "obj->", 1)) return 1;
+				fprintf(fd, "\n");
+//				fprintf(fd, ");\n");
+//				print_tabs(1, fd);
+//				fprintf(fd, "*to += ltt_align(*to, size);\n");
+				print_tabs(1, fd);
+				fprintf(fd, "if(buffer != NULL)\n");
+				print_tabs(2, fd);
+				fprintf(fd, "memcpy(buffer+*to_base+*to, &obj->len, *len);\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to += *len;\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*len = 0;\n");
+				fprintf(fd, "\n");
+
+				/* Write the child : varlen child or not ? */
+				if(has_type_fixed_size(((field_t*)td->fields.array[1])->type)) {
+					/* Fixed size len child : use a multiplication of its size */
+//					print_tabs(1, fd);
+//					fprintf(fd, "size = sizeof(\n");
+
+					//print_tabs(1, fd);
+					/* We know that *len does not contain alignment because of the
+					 * previous align output. len is always 0 here. */
+					if(print_type_write(((field_t*)td->fields.array[1])->type,
+							fd, 1, basename, "array[0]", "obj->", 1))
+						return 1;
+//					fprintf(fd, ");\n");
+					fprintf(fd, "\n");
+					print_tabs(1, fd);
+					fprintf(fd, "*len = obj->len * (*len);\n");
+					print_tabs(1, fd);
+					fprintf(fd, "if(buffer != NULL)\n");
+					print_tabs(2, fd);
+					fprintf(fd, "memcpy(buffer+*to_base+*to, obj->array, *len);\n");
+					print_tabs(1, fd);
+					fprintf(fd, "*to += *len;\n");
+					print_tabs(1, fd);
+					fprintf(fd, "*len = 0;\n");
+					fprintf(fd, "\n");
+				} else {
+					print_tabs(1, fd);
+					fprintf(fd, "/* Variable length child : iter. */\n");
+					print_tabs(1, fd);
+					fprintf(fd, "for(unsigned int i=0; i<obj->len; i++) {\n");
+					if(print_type_write(((field_t*)td->fields.array[1])->type,
+							fd, 2, basename, "array[i]", "obj->", 1)) return 1;
+					print_tabs(1, fd);
+					fprintf(fd, "}\n");
+				}
+				fprintf(fd, "\n");
+				print_tabs(1, fd);
+				fprintf(fd, "/* Realign the *to_base on arch size, set *to to 0 */\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to += ltt_align(*to, sizeof(void *));\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to_base = *to_base+*to;\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to = 0;\n");
+				fprintf(fd, "\n");
+				print_tabs(1, fd);
+				fprintf(fd, "/* Put source *from just after the C sequence */\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*from = obj+1;\n");
+				break;
+			case STRING:
+				print_tabs(1, fd);
+				fprintf(fd, "size = strlen(obj) + 1; /* Include final NULL char. */\n");
+				print_tabs(1, fd);
+				fprintf(fd, "if(buffer != NULL)\n");
+				print_tabs(2, fd);
+				fprintf(fd, "memcpy(buffer+*to_base+*to, obj, size);\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to += size;\n");
+				fprintf(fd, "\n");
+				print_tabs(1, fd);
+				fprintf(fd, "/* Realign the *to_base on arch size, set *to to 0 */\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to += ltt_align(*to, sizeof(void *));\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to_base = *to_base+*to;\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*to = 0;\n");
+				fprintf(fd, "\n");
+				print_tabs(1, fd);
+				fprintf(fd, "/* Put source *from just after the C string */\n");
+				print_tabs(1, fd);
+				fprintf(fd, "*from += size;\n");
+				break;
+			case STRUCT:
+				for(unsigned int i=0;i<td->fields.position;i++){
+					field_t *field = (field_t*)(td->fields.array[i]);
+					type_descriptor_t *type = field->type;
+					if(print_type_write(type,
+							fd, 1, basename, field->name, "obj->", 1)) return 1;
+					fprintf(fd, "\n");
+				}
+				break;
+			case UNION:
+				printf("ERROR : A union CANNOT contain a variable size child.\n");
+				return 1;
+				break;
+			case ARRAY:
+				/* Write the child : varlen child or not ? */
+				if(has_type_fixed_size(((field_t*)td->fields.array[0])->type)) {
+					/* Error : if an array has a variable size, then its child must also
+					 * have a variable size. */
+					assert(0);
+				} else {
+					print_tabs(1, fd);
+					fprintf(fd, "/* Variable length child : iter. */\n");
+					print_tabs(1, fd);
+					fprintf(fd, "for(unsigned int i=0; i<LTTNG_ARRAY_SIZE_%s; i++) {\n", basename);
+					if(print_type_write(((field_t*)td->fields.array[0])->type,
+							fd, 2, basename, "", "obj->array[i]", 1)) return 1;
+					print_tabs(1, fd);
+					fprintf(fd, "}\n");
+				}
+				break;
+			default:
+				printf("print_type_write_fct : type has no write function.\n");
+				break;
+		}
+
+
+	}
+
+
+	/* Function footer */
+	fprintf(fd, "}\n");
+	fprintf(fd, "\n");
+	return 0;
+}
+
+
+
+/* Print the logging function of an event. This is the core of genevent */
+int print_event_logging_function(char *basename, facility_t *fac,
+		event_t *event, FILE *fd)
+{
+	fprintf(fd, "static inline void trace_%s(\n", basename);
+	int	has_argument = 0;
+	int has_type_fixed = 0;
+
+  /* Does it support per trace tracing ? */
+  if(event->per_trace) {
+		print_tabs(2, fd);
+    fprintf(fd, "struct ltt_trace_struct *dest_trace");
+		has_argument = 1;
+  }
+  
+  /* Does it support per tracefile tracing ? */
+  if(event->per_tracefile) {
+		if(has_argument) {
+			fprintf(fd, ",");
+			fprintf(fd, "\n");
+		}
+    fprintf(fd, "unsigned int tracefile_index");
+		has_argument = 1;
+  }
+
+	for(unsigned int j = 0; j < event->fields.position; j++) {
+		/* For each field, print the function argument */
+		field_t *f = (field_t*)event->fields.array[j];
+		type_descriptor_t *t = f->type;
+		if(has_argument) {
+			fprintf(fd, ",");
+			fprintf(fd, "\n");
+		}
+		if(print_arg(t, fd, 2, basename, f->name)) return 1;
+		has_argument = 1;
+	}
+	if(!has_argument) {
+		print_tabs(2, fd);
+		fprintf(fd, "void");
+	}
+	fprintf(fd,")\n");
+	fprintf(fd, 
+			"#if (!defined(CONFIG_LTT) || !defined(CONFIG_LTT_FACILITY_%s))\n",
+			fac->capname);
+	fprintf(fd, "{\n");
+	fprintf(fd, "}\n");
+	fprintf(fd,"#else\n");
+	fprintf(fd, "{\n");
+	/* Print the function variables */
+	print_tabs(1, fd);
+	fprintf(fd, "unsigned int index;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "struct ltt_channel_struct *channel;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "struct ltt_trace_struct *trace;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "struct rchan_buf *relayfs_buf;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "void *buffer = NULL;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *to_base = &real_to_base;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_to = 0;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *to = &real_to;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_len = 0;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *len = &real_len;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t reserve_size;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t slot_size;\n");
+	print_tabs(1, fd);
+
+	if(event->fields.position > 0) {
+		for(unsigned int i=0;i<event->fields.position;i++){
+			/* Search for at least one child with fixed size. It means
+			 * we need local variables.*/
+			field_t *field = (field_t*)(event->fields.array[i]);
+			type_descriptor_t *type = field->type;
+			has_type_fixed = has_type_local(type);
+			if(has_type_fixed) break;
+		}
+		
+		if(has_type_fixed) {
+			fprintf(fd, "size_t align;\n");
+			print_tabs(1, fd);
+		}
+
+		fprintf(fd, "const void *real_from;\n");
+		print_tabs(1, fd);
+		fprintf(fd, "const void **from = &real_from;\n");
+		print_tabs(1, fd);
+	}
+	fprintf(fd, "u64 tsc;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t before_hdr_pad, after_hdr_pad, header_size;\n");
+	fprintf(fd, "\n");
+	
+	print_tabs(1, fd);
+	fprintf(fd, "if(ltt_traces.num_active_traces == 0) return;\n");
+	fprintf(fd, "\n");
+
+	/* Calculate event variable len + event data alignment offset.
+	 * Assume that the padding for alignment starts at a void*
+	 * address.
+	 * This excludes the header size and alignment. */
+
+	print_tabs(1, fd);
+	fprintf(fd, "/* For each field, calculate the field size. */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "/* size = *to_base + *to + *len */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "/* Assume that the padding for alignment starts at a\n");
+	print_tabs(1, fd);
+	fprintf(fd, " * sizeof(void *) address. */\n");
+	fprintf(fd, "\n");
+
+	for(unsigned int i=0;i<event->fields.position;i++){
+		field_t *field = (field_t*)(event->fields.array[i]);
+		type_descriptor_t *type = field->type;
+		/* Set from */
+		print_tabs(1, fd);
+		switch(type->type) {
+			case SEQUENCE:
+			case UNION:
+			case ARRAY:
+			case STRUCT:
+			case STRING:
+				fprintf(fd, "*from = lttng_param_%s;\n", field->name);
+				break;
+			default:
+				fprintf(fd, "*from = &lttng_param_%s;\n", field->name);
+				break;
+		}
+
+		if(print_type_write(type,
+				fd, 1, basename, field->name, "lttng_param_", 0)) return 1;
+		fprintf(fd, "\n");
+	}
+	print_tabs(1, fd);
+	fprintf(fd, "reserve_size = *to_base + *to + *len;\n");
+
+	/* Take locks : make sure the trace does not vanish while we write on
+	 * it. A simple preemption disabling is enough (using rcu traces). */
+	print_tabs(1, fd);
+	fprintf(fd, "preempt_disable();\n");
+	print_tabs(1, fd);
+	fprintf(fd, "ltt_nesting[smp_processor_id()]++;\n");
+
+	/* Get facility index */
+
+	if(event->per_tracefile) {
+		print_tabs(1, fd);
+		fprintf(fd, "index = tracefile_index;\n");
+	} else {
+		print_tabs(1, fd);
+		fprintf(fd, 
+			"index = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\
+					"\t\t\t\t\t\tevent_%s_%s);\n",
+				fac->name, fac->checksum, fac->name, event->name);
+	}
+	fprintf(fd,"\n");
+
+	
+	/* For each trace */
+	print_tabs(1, fd);
+	fprintf(fd, "list_for_each_entry_rcu(trace, &ltt_traces.head, list) {\n");
+	print_tabs(2, fd);
+	fprintf(fd, "if(!trace->active) continue;\n\n");
+
+	if(event->per_trace) {
+		print_tabs(2, fd);
+		fprintf(fd, "if(dest_trace != trace) continue;\n\n");
+	}
+ 
+	print_tabs(2, fd);
+	fprintf(fd, "channel = ltt_get_channel_from_index(trace, index);\n");
+	print_tabs(2, fd);
+	fprintf(fd, "relayfs_buf = channel->rchan->buf[smp_processor_id()];\n");
+	fprintf(fd, "\n");
+
+	
+	/* Relay reserve */
+	/* If error, increment event lost counter (done by ltt_reserve_slot) and 
+	 * return */
+	print_tabs(2, fd);
+	fprintf(fd, "slot_size = 0;\n");
+	print_tabs(2, fd);
+	fprintf(fd, "buffer = ltt_reserve_slot(trace, relayfs_buf,\n");
+	print_tabs(3, fd);
+	fprintf(fd, "reserve_size, &slot_size, &tsc,\n");
+	print_tabs(3, fd);
+	fprintf(fd, "&before_hdr_pad, &after_hdr_pad, &header_size);\n");
+	/* If error, return */
+	print_tabs(2, fd);
+	fprintf(fd, "if(!buffer) continue; /* buffer full */\n\n");
+	//print_tabs(2, fd);
+	// for DEBUG only 
+	// fprintf(fd, "goto commit; /* DEBUG : never actually write. */\n\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*to_base = *to = *len = 0;\n");
+	fprintf(fd, "\n");
+
+	/* Write event header */
+	print_tabs(2, fd);
+	fprintf(fd, "ltt_write_event_header(trace, channel, buffer,\n");
+	print_tabs(3, fd);
+	fprintf(fd, "ltt_facility_%s_%X, event_%s_%s,\n", fac->name, fac->checksum,
+									fac->name, event->name);
+	print_tabs(3, fd);
+	fprintf(fd, "reserve_size, before_hdr_pad, tsc);\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*to_base += before_hdr_pad + after_hdr_pad + header_size;\n");
+	fprintf(fd, "\n");
+	
+	/* write data. */
+
+	for(unsigned int i=0;i<event->fields.position;i++){
+		field_t *field = (field_t*)(event->fields.array[i]);
+		type_descriptor_t *type = field->type;
+	
+		/* Set from */
+		print_tabs(2, fd);
+		switch(type->type) {
+			case SEQUENCE:
+			case UNION:
+			case ARRAY:
+			case STRUCT:
+			case STRING:
+				fprintf(fd, "*from = lttng_param_%s;\n", field->name);
+				break;
+			default:
+				fprintf(fd, "*from = &lttng_param_%s;\n", field->name);
+				break;
+		}
+
+
+		if(print_type_write(type,
+				fd, 2, basename, field->name, "lttng_param_", 0)) return 1;
+		fprintf(fd, "\n");
+		
+		/* Don't forget to flush pending memcpy */
+		print_tabs(2, fd);
+		fprintf(fd, "/* Flush pending memcpy */\n");
+		print_tabs(2, fd);
+		fprintf(fd, "if(*len != 0) {\n");
+		print_tabs(3, fd);
+		fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n");
+		print_tabs(3, fd);
+		fprintf(fd, "*to += *len;\n");
+		//print_tabs(3, fd);
+		//fprintf(fd, "from += len;\n");
+		print_tabs(3, fd);
+		fprintf(fd, "*len = 0;\n");
+		print_tabs(2, fd);
+		fprintf(fd, "}\n");
+		fprintf(fd, "\n");
+	}
+
+	
+	/* commit */
+	// for DEBUG only.
+	//fprintf(fd, "commit:\n"); /* DEBUG! */
+	print_tabs(2, fd);
+	fprintf(fd, "ltt_commit_slot(relayfs_buf, buffer, slot_size);\n\n");
+	
+	print_tabs(1, fd);
+	fprintf(fd, "}\n\n");
+
+	/* Release locks */
+	print_tabs(1, fd);
+	fprintf(fd, "ltt_nesting[smp_processor_id()]--;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "preempt_enable_no_resched();\n");
+
+	fprintf(fd, "}\n");
+	fprintf(fd, "#endif //(!defined(CONFIG_LTT) || !defined(CONFIG_LTT_FACILITY_%s))\n\n",
+			fac->capname);
+	return 0;
+}
+
+/* print_event_logging_function_user_generic
+ * Print the logging function of an event for userspace tracing. This is the
+ * core of genevent */
+int print_event_logging_function_user_generic(char *basename, facility_t *fac,
+		event_t *event, FILE *fd)
+{
+	char *attrib;
+
+	fprintf(fd, "#ifndef LTT_TRACE_FAST\n");
+	
+	if(event->no_instrument_function) {
+		attrib = "__attribute__((no_instrument_function)) ";
+	} else {
+		attrib = "";
+	}
+	if(event->param_buffer) {
+		fprintf(fd, "static inline %sint trace_%s_param_buffer(\n", attrib, basename);
+	} else {
+		fprintf(fd, "static inline %sint trace_%s(\n",attrib, basename);
+	}
+	int	has_argument = 0;
+	int has_type_fixed = 0;
+
+	if(event->param_buffer) {
+		if(has_argument) {
+				fprintf(fd, ",");
+				fprintf(fd, "\n");
+		}
+		print_tabs(2, fd);
+		fprintf(fd, "void *buffer");
+		has_argument = 1;
+		fprintf(fd, ",");
+		fprintf(fd, "\n");
+		print_tabs(2, fd);
+		fprintf(fd, "size_t reserve_size");
+	} else {
+		for(unsigned int j = 0; j < event->fields.position; j++) {
+			/* For each field, print the function argument */
+			field_t *f = (field_t*)event->fields.array[j];
+			type_descriptor_t *t = f->type;
+			if(has_argument) {
+				fprintf(fd, ",");
+				fprintf(fd, "\n");
+			}
+			if(print_arg(t, fd, 2, basename, f->name)) return 1;
+			has_argument = 1;
+		}
+	}
+	if(!has_argument) {
+		print_tabs(2, fd);
+		fprintf(fd, "void");
+	}
+	fprintf(fd,")\n");
+	fprintf(fd, 
+			"#ifndef LTT_TRACE\n");
+	fprintf(fd, "{\n");
+	fprintf(fd, "}\n");
+	fprintf(fd,"#else\n");
+	fprintf(fd, "{\n");
+	/* Print the function variables */
+	print_tabs(1, fd);
+	fprintf(fd, "int ret = 0;\n");
+	if(event->param_buffer) {
+		print_tabs(1, fd);
+		fprintf(fd, "reserve_size = ltt_align(reserve_size, sizeof(void *));\n");
+		print_tabs(1, fd);
+		fprintf(fd, "{\n");
+		goto do_syscall;
+	}
+	print_tabs(1, fd);
+	fprintf(fd, "void *buffer = NULL;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *to_base = &real_to_base;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_to = 0;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *to = &real_to;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_len = 0;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *len = &real_len;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t reserve_size;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t slot_size;\n");
+	print_tabs(1, fd);
+
+	if(event->fields.position > 0) {
+		for(unsigned int i=0;i<event->fields.position;i++){
+			/* Search for at least one child with fixed size. It means
+			 * we need local variables.*/
+			field_t *field = (field_t*)(event->fields.array[i]);
+			type_descriptor_t *type = field->type;
+			has_type_fixed = has_type_local(type);
+			if(has_type_fixed) break;
+		}
+		
+		if(has_type_fixed) {
+			fprintf(fd, "size_t align;\n");
+			print_tabs(1, fd);
+		}
+
+		fprintf(fd, "const void *real_from;\n");
+		print_tabs(1, fd);
+		fprintf(fd, "const void **from = &real_from;\n");
+		print_tabs(1, fd);
+	}
+
+	/* Calculate event variable len + event data alignment offset.
+	 * Assume that the padding for alignment starts at a void*
+	 * address.
+	 * This excludes the header size and alignment. */
+
+	print_tabs(1, fd);
+	fprintf(fd, "/* For each field, calculate the field size. */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "/* size = *to_base + *to + *len */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "/* Assume that the padding for alignment starts at a\n");
+	print_tabs(1, fd);
+	fprintf(fd, " * sizeof(void *) address. */\n");
+	fprintf(fd, "\n");
+
+	for(unsigned int i=0;i<event->fields.position;i++){
+		field_t *field = (field_t*)(event->fields.array[i]);
+		type_descriptor_t *type = field->type;
+		/* Set from */
+		print_tabs(1, fd);
+		switch(type->type) {
+			case SEQUENCE:
+			case UNION:
+			case ARRAY:
+			case STRUCT:
+			case STRING:
+				fprintf(fd, "*from = lttng_param_%s;\n", field->name);
+				break;
+			default:
+				fprintf(fd, "*from = &lttng_param_%s;\n", field->name);
+				break;
+		}
+
+		if(print_type_write(type,
+				fd, 1, basename, field->name, "lttng_param_", 0)) return 1;
+		fprintf(fd, "\n");
+	}
+	print_tabs(1, fd);
+	fprintf(fd, "reserve_size = *to_base + *to + *len;\n");
+
+	print_tabs(1, fd);
+	fprintf(fd, "{\n");
+	print_tabs(2, fd);
+	fprintf(fd, "char stack_buffer[reserve_size];\n");
+	print_tabs(2, fd);
+	fprintf(fd, "buffer = stack_buffer;\n");
+	fprintf(fd, "\n");
+
+	
+	//print_tabs(2, fd);
+	// for DEBUG only 
+	// fprintf(fd, "goto commit; /* DEBUG : never actually write. */\n\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*to_base = *to = *len = 0;\n");
+	fprintf(fd, "\n");
+
+	/* write data. */
+
+	for(unsigned int i=0;i<event->fields.position;i++){
+		field_t *field = (field_t*)(event->fields.array[i]);
+		type_descriptor_t *type = field->type;
+	
+		/* Set from */
+		print_tabs(2, fd);
+		switch(type->type) {
+			case SEQUENCE:
+			case UNION:
+			case ARRAY:
+			case STRUCT:
+			case STRING:
+				fprintf(fd, "*from = lttng_param_%s;\n", field->name);
+				break;
+			default:
+				fprintf(fd, "*from = &lttng_param_%s;\n", field->name);
+				break;
+		}
+
+
+		if(print_type_write(type,
+				fd, 2, basename, field->name, "lttng_param_", 0)) return 1;
+		fprintf(fd, "\n");
+		
+		/* Don't forget to flush pending memcpy */
+		print_tabs(2, fd);
+		fprintf(fd, "/* Flush pending memcpy */\n");
+		print_tabs(2, fd);
+		fprintf(fd, "if(*len != 0) {\n");
+		print_tabs(3, fd);
+		fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n");
+		print_tabs(3, fd);
+		fprintf(fd, "*to += *len;\n");
+		//print_tabs(3, fd);
+		//fprintf(fd, "from += len;\n");
+		print_tabs(3, fd);
+		fprintf(fd, "*len = 0;\n");
+		print_tabs(2, fd);
+		fprintf(fd, "}\n");
+		fprintf(fd, "\n");
+	}
+
+do_syscall:
+	print_tabs(2, fd);
+	fprintf(fd, "ret = ltt_trace_generic(ltt_facility_%s_%X, event_%s_%s, buffer, reserve_size, LTT_BLOCKING);\n", fac->name, fac->checksum, fac->name, event->name);
+
+	print_tabs(1, fd);
+	fprintf(fd, "}\n\n");
+	
+	print_tabs(1, fd);
+	fprintf(fd, "return ret;\n\n");
+
+	fprintf(fd, "}\n");
+	fprintf(fd, 
+			"#endif //LTT_TRACE\n");
+	fprintf(fd, "#endif //!LTT_TRACE_FAST\n\n");
+
+	return 0;
+}
+
+/* print_event_logging_function_user_fast
+ * Print the logging function of an event for userspace tracing. This is the
+ * core of genevent */
+int print_event_logging_function_user_fast(char *basename, facility_t *fac,
+		event_t *event, FILE *fd)
+{
+	char *attrib;
+
+	fprintf(fd, "#ifdef LTT_TRACE_FAST\n");
+	
+	if(event->no_instrument_function) {
+		attrib = "__attribute__((no_instrument_function)) ";
+	} else {
+		attrib = "";
+	}
+	fprintf(fd, "static inline %sint trace_%s(\n",attrib, basename);
+
+	int	has_argument = 0;
+	int has_type_fixed = 0;
+
+	for(unsigned int j = 0; j < event->fields.position; j++) {
+		/* For each field, print the function argument */
+		field_t *f = (field_t*)event->fields.array[j];
+		type_descriptor_t *t = f->type;
+		if(has_argument) {
+			fprintf(fd, ",");
+			fprintf(fd, "\n");
+		}
+		if(print_arg(t, fd, 2, basename, f->name)) return 1;
+		has_argument = 1;
+	}
+	if(!has_argument) {
+		print_tabs(2, fd);
+		fprintf(fd, "void");
+	}
+	fprintf(fd,")\n");
+	fprintf(fd, 
+			"#ifndef LTT_TRACE\n");
+	fprintf(fd, "{\n");
+	fprintf(fd, "}\n");
+	fprintf(fd,"#else\n");
+	fprintf(fd, "{\n");
+	/* Print the function variables */
+	print_tabs(1, fd);
+	fprintf(fd, "unsigned int index;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "struct ltt_trace_info *trace = thread_trace_info;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "struct ltt_buf *ltt_buf;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "void *buffer = NULL;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_to_base = 0; /* The buffer is allocated on arch_size alignment */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *to_base = &real_to_base;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_to = 0;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *to = &real_to;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t real_len = 0;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t *len = &real_len;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t reserve_size;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t slot_size;\n");
+	print_tabs(1, fd);
+
+	if(event->fields.position > 0) {
+		for(unsigned int i=0;i<event->fields.position;i++){
+			/* Search for at least one child with fixed size. It means
+			 * we need local variables.*/
+			field_t *field = (field_t*)(event->fields.array[i]);
+			type_descriptor_t *type = field->type;
+			has_type_fixed = has_type_local(type);
+			if(has_type_fixed) break;
+		}
+		
+		if(has_type_fixed) {
+			fprintf(fd, "size_t align;\n");
+			print_tabs(1, fd);
+		}
+
+		fprintf(fd, "const void *real_from;\n");
+		print_tabs(1, fd);
+		fprintf(fd, "const void **from = &real_from;\n");
+		print_tabs(1, fd);
+	}
+	fprintf(fd, "uint64_t tsc;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "size_t before_hdr_pad, after_hdr_pad, header_size;\n");
+	fprintf(fd, "\n");
+	
+	print_tabs(1, fd);
+	fprintf(fd, "if(!trace) {\n");
+	print_tabs(2, fd);
+	fprintf(fd, "ltt_thread_init();\n");
+	print_tabs(2, fd);
+	fprintf(fd, "trace = thread_trace_info;\n");
+	print_tabs(1, fd);
+	fprintf(fd, "}\n\n");
+	fprintf(fd, "\n");
+
+	/* Calculate event variable len + event data alignment offset.
+	 * Assume that the padding for alignment starts at a void*
+	 * address.
+	 * This excludes the header size and alignment. */
+
+	print_tabs(1, fd);
+	fprintf(fd, "/* For each field, calculate the field size. */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "/* size = *to_base + *to + *len */\n");
+	print_tabs(1, fd);
+	fprintf(fd, "/* Assume that the padding for alignment starts at a\n");
+	print_tabs(1, fd);
+	fprintf(fd, " * sizeof(void *) address. */\n");
+	fprintf(fd, "\n");
+
+	for(unsigned int i=0;i<event->fields.position;i++){
+		field_t *field = (field_t*)(event->fields.array[i]);
+		type_descriptor_t *type = field->type;
+		/* Set from */
+		print_tabs(1, fd);
+		switch(type->type) {
+			case SEQUENCE:
+			case UNION:
+			case ARRAY:
+			case STRUCT:
+			case STRING:
+				fprintf(fd, "*from = lttng_param_%s;\n", field->name);
+				break;
+			default:
+				fprintf(fd, "*from = &lttng_param_%s;\n", field->name);
+				break;
+		}
+
+		if(print_type_write(type,
+				fd, 1, basename, field->name, "lttng_param_", 0)) return 1;
+		fprintf(fd, "\n");
+	}
+	print_tabs(1, fd);
+	fprintf(fd, "reserve_size = *to_base + *to + *len;\n");
+
+	print_tabs(1, fd);
+	fprintf(fd, "trace->nesting++;\n");
+
+	/* Get facility index */
+
+	print_tabs(1, fd);
+	fprintf(fd, 
+		"index = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\
+				"\t\t\t\t\t\tevent_%s_%s);\n",
+			fac->name, fac->checksum, fac->name, event->name);
+	fprintf(fd,"\n");
+
+	
+	print_tabs(1, fd);
+	fprintf(fd, "{\n");
+
+	if(event->per_trace) {
+		print_tabs(2, fd);
+		fprintf(fd, "if(dest_trace != trace) continue;\n\n");
+	}
+ 
+	print_tabs(2, fd);
+	fprintf(fd, "ltt_buf = ltt_get_channel_from_index(trace, index);\n");
+	print_tabs(2, fd);
+
+	
+	/* Relay reserve */
+	/* If error, increment event lost counter (done by ltt_reserve_slot) and 
+	 * return */
+	print_tabs(2, fd);
+	fprintf(fd, "slot_size = 0;\n");
+	print_tabs(2, fd);
+	fprintf(fd, "buffer = ltt_reserve_slot(trace, ltt_buf,\n");
+	print_tabs(3, fd);
+	fprintf(fd, "reserve_size, &slot_size, &tsc,\n");
+	print_tabs(3, fd);
+	fprintf(fd, "&before_hdr_pad, &after_hdr_pad, &header_size);\n");
+	/* If error, return */
+	print_tabs(2, fd);
+	fprintf(fd, "if(!buffer) goto end; /* buffer full */\n\n");
+	//print_tabs(2, fd);
+	// for DEBUG only 
+	// fprintf(fd, "goto commit; /* DEBUG : never actually write. */\n\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*to_base = *to = *len = 0;\n");
+	fprintf(fd, "\n");
+
+	/* Write event header */
+	print_tabs(2, fd);
+	fprintf(fd, "ltt_write_event_header(trace, ltt_buf, buffer,\n");
+	print_tabs(3, fd);
+	fprintf(fd, "ltt_facility_%s_%X, event_%s_%s,\n", fac->name, fac->checksum,
+									fac->name, event->name);
+	print_tabs(3, fd);
+	fprintf(fd, "reserve_size, before_hdr_pad, tsc);\n");
+	print_tabs(2, fd);
+	fprintf(fd, "*to_base += before_hdr_pad + after_hdr_pad + header_size;\n");
+	fprintf(fd, "\n");
+	
+	/* write data. */
+
+	for(unsigned int i=0;i<event->fields.position;i++){
+		field_t *field = (field_t*)(event->fields.array[i]);
+		type_descriptor_t *type = field->type;
+	
+		/* Set from */
+		print_tabs(2, fd);
+		switch(type->type) {
+			case SEQUENCE:
+			case UNION:
+			case ARRAY:
+			case STRUCT:
+			case STRING:
+				fprintf(fd, "*from = lttng_param_%s;\n", field->name);
+				break;
+			default:
+				fprintf(fd, "*from = &lttng_param_%s;\n", field->name);
+				break;
+		}
+
+
+		if(print_type_write(type,
+				fd, 2, basename, field->name, "lttng_param_", 0)) return 1;
+		fprintf(fd, "\n");
+		
+		/* Don't forget to flush pending memcpy */
+		print_tabs(2, fd);
+		fprintf(fd, "/* Flush pending memcpy */\n");
+		print_tabs(2, fd);
+		fprintf(fd, "if(*len != 0) {\n");
+		print_tabs(3, fd);
+		fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n");
+		print_tabs(3, fd);
+		fprintf(fd, "*to += *len;\n");
+		//print_tabs(3, fd);
+		//fprintf(fd, "from += len;\n");
+		print_tabs(3, fd);
+		fprintf(fd, "*len = 0;\n");
+		print_tabs(2, fd);
+		fprintf(fd, "}\n");
+		fprintf(fd, "\n");
+	}
+
 	
+	/* commit */
+	// for DEBUG only.
+	//fprintf(fd, "commit:\n"); /* DEBUG! */
+	print_tabs(2, fd);
+	fprintf(fd, "ltt_commit_slot(ltt_buf, buffer, slot_size);\n\n");
+	
+	fprintf(fd, "}\n\n");
+
+	fprintf(fd, "end:\n");
 	/* Release locks */
+	print_tabs(1, fd);
+	fprintf(fd, "trace->nesting--;\n");
+
 
 	fprintf(fd, "}\n");
-	fprintf(fd, "#endif //CONFIG_LTT\n\n");
+	fprintf(fd, 
+			"#endif //LTT_TRACE\n");
+	fprintf(fd, "#endif //LTT_TRACE_FAST\n");
+
 	return 0;
 }
 
 
+
+
+
+
 /* ltt-facility-name.h : main logging header.
  * log_header */
 
@@ -995,11 +2092,34 @@ void print_log_header_head(facility_t *fac, FILE *fd)
 {
 	fprintf(fd, "#ifndef _LTT_FACILITY_%s_H_\n", fac->capname);
 	fprintf(fd, "#define _LTT_FACILITY_%s_H_\n\n", fac->capname);
+  fprintf(fd, "#include <linux/types.h>\n");
+	if(!fac->arch)
+	  fprintf(fd, "#include <linux/ltt/ltt-facility-id-%s.h>\n", fac->name);
+	else
+	  fprintf(fd, "#include <asm/ltt/ltt-facility-id-%s_%s.h>\n",
+				fac->name,
+				fac->arch);
+  fprintf(fd, "#include <linux/ltt-core.h>\n");
 	fprintf(fd, "\n");
-	fprintf(fd, "/* Facility activation at compile time. */\n");
-	fprintf(fd, "#ifdef CONFIG_LTT_FACILITY_%s\n\n", fac->capname);
 }
 
+/* ltt-facility-name.h : main logging header.
+ * log_header */
+
+void print_log_header_head_user(facility_t *fac, FILE *fd)
+{
+	fprintf(fd, "#ifndef _LTT_FACILITY_%s_H_\n", fac->capname);
+	fprintf(fd, "#define _LTT_FACILITY_%s_H_\n\n", fac->capname);
+  fprintf(fd, "#include <sys/types.h>\n");
+	if(!fac->arch)
+	  fprintf(fd, "#include <ltt/ltt-facility-id-%s.h>\n", fac->name);
+	else
+	  fprintf(fd, "#include <asm/ltt/ltt-facility-id-%s_%s.h>\n",
+				fac->name,
+				fac->arch);
+  fprintf(fd, "#include <ltt/ltt-usertrace.h>\n");
+	fprintf(fd, "\n");
+}
 
 
 int print_log_header_types(facility_t *fac, FILE *fd)
@@ -1010,8 +2130,14 @@ int print_log_header_types(facility_t *fac, FILE *fd)
 	
 	for(unsigned int i = 0; i < types->position; i++) {
 		/* For each named type, print the definition */
-		if((print_type_declaration(types->array[i], fd,
-						0, "", ""))) return 1;
+		if(print_type_declaration(types->array[i], fd,
+						0, "", "")) return 1;
+		/* Print also the align function */
+		if(print_type_alignment_fct(types->array[i], fd,
+						0, "", "")) return 1;
+		/* Print also the write function */
+		if(print_type_write_fct(types->array[i], fd,
+						0, "", "")) return 1;
 	}
 	return 0;
 }
@@ -1038,15 +2164,28 @@ int print_log_header_events(facility_t *fac, FILE *fd)
 			/* For each unnamed type, print the definition */
 			field_t *f = (field_t*)event->fields.array[j];
 			type_descriptor_t *t = f->type;
-			if(t->type_name == NULL)
+			if(t->type_name == NULL) {
 				if((print_type_declaration(t, fd, 0, basename, f->name))) return 1;
+				/* Print also the align function */
+				if((print_type_alignment_fct(t, fd, 0, basename, f->name))) return 1;
+				/* Print also the write function */
+				if((print_type_write_fct(t, fd, 0, basename, f->name))) return 1;
+			}
 		}
+
 		fprintf(fd, "\n");
 
 		fprintf(fd, "/* Event %s logging function */\n",
 				event->name);
-
-		if(print_event_logging_function(basename, event, fd)) return 1;
+		
+		if(!fac->user) {
+			if(print_event_logging_function(basename, fac, event, fd)) return 1;
+		} else {
+			if(print_event_logging_function_user_generic(basename, fac, event, fd))
+				return 1;
+			if(print_event_logging_function_user_fast(basename, fac, event, fd))
+				return 1;
+		}
 
 		fprintf(fd, "\n");
 	}
@@ -1057,7 +2196,11 @@ int print_log_header_events(facility_t *fac, FILE *fd)
 
 void print_log_header_tail(facility_t *fac, FILE *fd)
 {
-	fprintf(fd, "#endif //CONFIG_LTT_FACILITY_%s\n\n", fac->capname);
+	fprintf(fd, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname);
+}
+
+void print_log_header_tail_user(facility_t *fac, FILE *fd)
+{
 	fprintf(fd, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname);
 }
 	
@@ -1074,6 +2217,14 @@ int print_log_header(facility_t *fac)
 	strncat(filename, fac->name, PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 
+	if(fac->arch) {
+		strncat(filename, "_", PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+
+		strncat(filename, fac->arch, PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+	}
+
 	strncat(filename, ".h", PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 	
@@ -1086,7 +2237,10 @@ int print_log_header(facility_t *fac)
 	}
 
 	/* Print file head */
-	print_log_header_head(fac, fd);
+	if(!fac->user)
+		print_log_header_head(fac, fd);
+	else
+		print_log_header_head_user(fac, fd);
 
 	/* print named types in declaration order */
 	if(print_log_header_types(fac, fd)) return 1;
@@ -1095,7 +2249,11 @@ int print_log_header(facility_t *fac)
 	if(print_log_header_events(fac, fd)) return 1;
 	
 	/* Print file tail */
-	print_log_header_tail(fac, fd);
+	if(!fac->user)
+		print_log_header_tail(fac, fd);
+	else
+		print_log_header_tail_user(fac, fd);
+
 
 	
 	fclose(fd);
@@ -1111,6 +2269,9 @@ int print_id_header(facility_t *fac)
 	char filename[PATH_MAX];
 	unsigned int filename_size = 0;
 	FILE *fd;
+	char basename[PATH_MAX];
+	char basename_len = 0;
+
 	dprintf("%s\n", fac->name);
 
 	strcpy(filename, "ltt-facility-id-");
@@ -1119,6 +2280,14 @@ int print_id_header(facility_t *fac)
 	strncat(filename, fac->name, PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 
+	if(fac->arch) {
+		strncat(filename, "_", PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+
+		strncat(filename, fac->arch, PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+	}
+
 	strncat(filename, ".h", PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 	
@@ -1130,6 +2299,77 @@ int print_id_header(facility_t *fac)
 		return errno;
 	}
 
+	if(!fac->user) {
+		fprintf(fd, "#ifndef _LTT_FACILITY_ID_%s_H_\n",fac->capname);
+		fprintf(fd, "#define _LTT_FACILITY_ID_%s_H_\n\n",fac->capname);
+		fprintf(fd, "#ifdef CONFIG_LTT\n");
+
+		fprintf(fd,"#include <linux/ltt-facilities.h>\n\n");
+
+		fprintf(fd,"/****  facility handle  ****/\n\n");
+		fprintf(fd,"extern ltt_facility_t ltt_facility_%s_%X;\n",
+				fac->name, fac->checksum);
+		fprintf(fd,"extern ltt_facility_t ltt_facility_%s;\n\n\n",fac->name);
+
+		strncpy(basename, fac->name, PATH_MAX);
+		basename_len = strlen(basename);
+		strncat(basename, "_", PATH_MAX - basename_len);
+		basename_len++;
+		
+		fprintf(fd,"/****  event index  ****/\n\n");
+		fprintf(fd,"enum %s_event {\n",fac->name);
+		
+		for(unsigned int i = 0; i < fac->events.position; i++) {
+			event_t *event = (event_t*)fac->events.array[i];
+			strncpy(basename+basename_len, event->name, PATH_MAX-basename_len);
+			print_tabs(1, fd);
+			fprintf(fd, "event_%s,\n", basename);
+		}
+		print_tabs(1, fd);
+		fprintf(fd, "facility_%s_num_events\n", fac->name);
+		fprintf(fd, "};\n");
+		fprintf(fd, "\n");
+
+
+		fprintf(fd, "#endif //CONFIG_LTT\n");
+		fprintf(fd, "#endif //_LTT_FACILITY_ID_%s_H_\n",fac->capname);
+	} else {
+		fprintf(fd, "#ifndef _LTT_FACILITY_ID_%s_H_\n",fac->capname);
+		fprintf(fd, "#define _LTT_FACILITY_ID_%s_H_\n\n",fac->capname);
+		fprintf(fd, "#ifdef LTT_TRACE\n");
+
+		fprintf(fd,"#include <ltt/ltt-usertrace.h>\n\n");
+
+		fprintf(fd,"/****  facility handle  ****/\n\n");
+		fprintf(fd,"extern ltt_facility_t ltt_facility_%s_%X;\n",
+				fac->name, fac->checksum);
+		fprintf(fd,"extern ltt_facility_t ltt_facility_%s;\n\n\n",fac->name);
+
+		strncpy(basename, fac->name, PATH_MAX);
+		basename_len = strlen(basename);
+		strncat(basename, "_", PATH_MAX - basename_len);
+		basename_len++;
+		
+		fprintf(fd,"/****  event index  ****/\n\n");
+		fprintf(fd,"enum %s_event {\n",fac->name);
+		
+		for(unsigned int i = 0; i < fac->events.position; i++) {
+			event_t *event = (event_t*)fac->events.array[i];
+			strncpy(basename+basename_len, event->name, PATH_MAX-basename_len);
+			print_tabs(1, fd);
+			fprintf(fd, "event_%s,\n", basename);
+		}
+		print_tabs(1, fd);
+		fprintf(fd, "facility_%s_num_events\n", fac->name);
+		fprintf(fd, "};\n");
+		fprintf(fd, "\n");
+
+
+		fprintf(fd, "#endif //LTT_TRACE\n");
+		fprintf(fd, "#endif //_LTT_FACILITY_ID_%s_H_\n",fac->capname);
+	}
+
+
 	fclose(fd);
 
 	return 0;
@@ -1151,6 +2391,77 @@ int print_loader_header(facility_t *fac)
 	strncat(filename, fac->name, PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 
+	if(fac->arch) {
+		strncat(filename, "_", PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+
+		strncat(filename, fac->arch, PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+	}
+
+	strncat(filename, ".h", PATH_MAX - filename_size);
+	filename_size = strlen(filename);
+	
+
+	fd = fopen(filename, "w");
+	if(fd == NULL) {
+		printf("Error opening file %s for writing : %s\n",
+				filename, strerror(errno));
+		return errno;
+	}
+
+  fprintf(fd, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n", fac->capname);
+  fprintf(fd, "#define _LTT_FACILITY_LOADER_%s_H_\n\n", fac->capname);
+  fprintf(fd, "#ifdef CONFIG_LTT\n\n");
+  fprintf(fd,"#include <linux/ltt-facilities.h>\n");
+	if(!fac->arch)
+	  fprintf(fd,"#include <linux/ltt/ltt-facility-id-%s.h>\n\n",
+				fac->name);
+	else
+	  fprintf(fd,"#include <asm/ltt/ltt-facility-id-%s_%s.h>\n\n",
+				fac->name,
+				fac->arch);
+  fprintf(fd,"ltt_facility_t\tltt_facility_%s;\n", fac->name);
+  fprintf(fd,"ltt_facility_t\tltt_facility_%s_%X;\n\n",
+			fac->name, fac->checksum);
+
+  fprintf(fd,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n",
+      fac->name);
+  fprintf(fd,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n",
+      fac->name, fac->checksum);
+  fprintf(fd,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", fac->checksum);
+  fprintf(fd,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", fac->name);
+  fprintf(fd,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\tfacility_%s_num_events\n\n",
+			fac->name);
+  fprintf(fd, "#endif //CONFIG_LTT\n\n");
+  fprintf(fd, "#endif //_LTT_FACILITY_LOADER_%s_H_\n", fac->capname);
+
+	fclose(fd);
+
+	return 0;
+}
+
+int print_loader_header_user(facility_t *fac)
+{
+	char filename[PATH_MAX];
+	unsigned int filename_size = 0;
+	FILE *fd;
+	dprintf("%s\n", fac->name);
+
+	strcpy(filename, "ltt-facility-loader-");
+	filename_size = strlen(filename);
+	
+	strncat(filename, fac->name, PATH_MAX - filename_size);
+	filename_size = strlen(filename);
+
+	if(fac->arch) {
+		strncat(filename, "_", PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+
+		strncat(filename, fac->arch, PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+	}
+
 	strncat(filename, ".h", PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 	
@@ -1162,12 +2473,38 @@ int print_loader_header(facility_t *fac)
 		return errno;
 	}
 
+  fprintf(fd, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n", fac->capname);
+  fprintf(fd, "#define _LTT_FACILITY_LOADER_%s_H_\n\n", fac->capname);
+  fprintf(fd,"#include <ltt/ltt-usertrace.h>\n");
+	if(!fac->arch)
+	  fprintf(fd,"#include <ltt/ltt-facility-id-%s.h>\n\n",
+				fac->name);
+	else
+	  fprintf(fd,"#include <asm/ltt/ltt-facility-id-%s_%s.h>\n\n",
+				fac->name,
+				fac->arch);
+  fprintf(fd,"ltt_facility_t\tltt_facility_%s;\n", fac->name);
+  fprintf(fd,"ltt_facility_t\tltt_facility_%s_%X;\n\n",
+			fac->name, fac->checksum);
+
+  fprintf(fd,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n",
+      fac->name);
+  fprintf(fd,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n",
+      fac->name, fac->checksum);
+  fprintf(fd,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", fac->checksum);
+  fprintf(fd,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", fac->name);
+  fprintf(fd,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\tfacility_%s_num_events\n\n",
+			fac->name);
+  fprintf(fd, "#endif //_LTT_FACILITY_LOADER_%s_H_\n", fac->capname);
+
 	fclose(fd);
 
 	return 0;
 }
 
-/* ltt-facility-loader-name.c : generic faciilty loader
+
+
+/* ltt-facility-loader-name.c : generic facility loader
  * loader_c */
 int print_loader_c(facility_t *fac)
 {
@@ -1182,6 +2519,127 @@ int print_loader_c(facility_t *fac)
 	strncat(filename, fac->name, PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 
+	if(fac->arch) {
+		strncat(filename, "_", PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+
+		strncat(filename, fac->arch, PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+	}
+
+	strncat(filename, ".c", PATH_MAX - filename_size);
+	filename_size = strlen(filename);
+	
+
+	fd = fopen(filename, "w");
+	if(fd == NULL) {
+		printf("Error opening file %s for writing : %s\n",
+				filename, strerror(errno));
+		return errno;
+	}
+
+  fprintf(fd, "/*\n");
+	if(!fac->arch)
+	  fprintf(fd, " * ltt-facility-loader-%s.c\n", fac->name);
+	else
+	  fprintf(fd, " * ltt-facility-loader-%s_%s.c\n", fac->name, fac->arch);
+  fprintf(fd, " *\n");
+  fprintf(fd, " * (C) Copyright  2005 - \n");
+  fprintf(fd, " *          Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n");
+  fprintf(fd, " *\n");
+  fprintf(fd, " * Contains the LTT facility loader.\n");
+  fprintf(fd, " *\n");
+  fprintf(fd, " */\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#include <linux/ltt-facilities.h>\n");
+  fprintf(fd, "#include <linux/module.h>\n");
+  fprintf(fd, "#include <linux/init.h>\n");
+  fprintf(fd, "#include <linux/config.h>\n");
+	if(!fac->arch)
+  	fprintf(fd, "#include \"ltt-facility-loader-%s.h\"\n", fac->name);
+	else
+	  fprintf(fd, "#include \"ltt-facility-loader-%s_%s.h\"\n",
+				fac->name, fac->arch);
+  fprintf(fd, "\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#ifdef CONFIG_LTT\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);\n");
+  fprintf(fd, "EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "static const char ltt_facility_name[] = LTT_FACILITY_NAME;\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#define SYMBOL_STRING(sym) #sym\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "static struct ltt_facility facility = {\n");
+  fprintf(fd, "\t.name = ltt_facility_name,\n");
+  fprintf(fd, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n");
+  fprintf(fd, "\t.checksum = LTT_FACILITY_CHECKSUM,\n");
+  fprintf(fd, "\t.symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL),\n");
+  fprintf(fd, "};\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "static int __init facility_init(void)\n");
+  fprintf(fd, "{\n");
+  fprintf(fd, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init in kernel\\n\");\n", fac->name);
+  fprintf(fd, "\n");
+  fprintf(fd, "\tLTT_FACILITY_SYMBOL = ltt_facility_kernel_register(&facility);\n");
+  fprintf(fd, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n");
+  fprintf(fd, "\t\n");
+  fprintf(fd, "\treturn LTT_FACILITY_SYMBOL;\n");
+  fprintf(fd, "}\n");
+  fprintf(fd, "__initcall(facility_init);\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#ifndef MODULE\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "static void __exit facility_exit(void)\n");
+  fprintf(fd, "{\n");
+  fprintf(fd, "\tint err;\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "\terr = ltt_facility_unregister(LTT_FACILITY_SYMBOL);\n");
+  fprintf(fd, "\tif(err != 0)\n");
+  fprintf(fd, "\t\tprintk(KERN_ERR \"LTT : Error in unregistering facility.\\n\");\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "}\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "module_exit(facility_exit)\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "MODULE_LICENSE(\"GPL\");\n");
+  fprintf(fd, "MODULE_AUTHOR(\"Mathieu Desnoyers\");\n");
+  fprintf(fd, "MODULE_DESCRIPTION(\"Linux Trace Toolkit Facility\");\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#endif //MODULE\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#endif //CONFIG_LTT\n");
+
+	fclose(fd);
+
+	return 0;
+}
+
+int print_loader_c_user(facility_t *fac)
+{
+	char filename[PATH_MAX];
+	unsigned int filename_size = 0;
+	FILE *fd;
+	dprintf("%s\n", fac->name);
+
+	strcpy(filename, "ltt-facility-loader-");
+	filename_size = strlen(filename);
+	
+	strncat(filename, fac->name, PATH_MAX - filename_size);
+	filename_size = strlen(filename);
+
+	if(fac->arch) {
+		strncat(filename, "_", PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+
+		strncat(filename, fac->arch, PATH_MAX - filename_size);
+		filename_size = strlen(filename);
+	}
+
 	strncat(filename, ".c", PATH_MAX - filename_size);
 	filename_size = strlen(filename);
 	
@@ -1193,6 +2651,62 @@ int print_loader_c(facility_t *fac)
 		return errno;
 	}
 
+  fprintf(fd, "/*\n");
+	if(!fac->arch)
+	  fprintf(fd, " * ltt-facility-loader-%s.c\n", fac->name);
+	else
+	  fprintf(fd, " * ltt-facility-loader-%s_%s.c\n", fac->name, fac->arch);
+  fprintf(fd, " *\n");
+  fprintf(fd, " * (C) Copyright  2005 - \n");
+  fprintf(fd, " *          Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n");
+  fprintf(fd, " *\n");
+  fprintf(fd, " * Contains the LTT user space facility loader.\n");
+  fprintf(fd, " *\n");
+  fprintf(fd, " */\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "#define LTT_TRACE\n");
+  fprintf(fd, "#include <error.h>\n");
+  fprintf(fd, "#include <stdio.h>\n");
+  fprintf(fd, "#include <ltt/ltt-usertrace.h>\n");
+	if(!fac->arch)
+  	fprintf(fd, "#include \"ltt-facility-loader-%s.h\"\n", fac->name);
+	else
+	  fprintf(fd, "#include \"ltt-facility-loader-%s_%s.h\"\n",
+				fac->name, fac->arch);
+  fprintf(fd, "\n");
+  fprintf(fd, "static struct user_facility_info facility = {\n");
+  fprintf(fd, "\t.name = LTT_FACILITY_NAME,\n");
+  fprintf(fd, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n");
+  fprintf(fd, "#ifndef LTT_PACK\n");
+  fprintf(fd, "\t.alignment = sizeof(void*),\n");
+  fprintf(fd, "#else\n");
+  fprintf(fd, "\t.alignment = 0,\n");
+  fprintf(fd, "#endif //LTT_PACK\n");
+  fprintf(fd, "\t.checksum = LTT_FACILITY_CHECKSUM,\n");
+  fprintf(fd, "\t.int_size = sizeof(int),\n");
+  fprintf(fd, "\t.long_size = sizeof(long),\n");
+  fprintf(fd, "\t.pointer_size = sizeof(void*),\n");
+  fprintf(fd, "\t.size_t_size = sizeof(size_t)\n");
+  fprintf(fd, "};\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "static void __attribute__((constructor)) __ltt_user_init(void)\n");
+  fprintf(fd, "{\n");
+  fprintf(fd, "\tint err;\n");
+	fprintf(fd, "#ifdef LTT_SHOW_DEBUG\n");
+  fprintf(fd, "\tprintf(\"LTT : ltt-facility-%s init in userspace\\n\");\n", fac->name);
+	fprintf(fd, "#endif //LTT_SHOW_DEBUG\n");
+  fprintf(fd, "\n");
+  fprintf(fd, "\terr = ltt_register_generic(&LTT_FACILITY_SYMBOL, &facility);\n");
+  fprintf(fd, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n");
+  fprintf(fd, "\t\n");
+  fprintf(fd, "\tif(err) {\n");
+	fprintf(fd, "#ifdef LTT_SHOW_DEBUG\n");
+  fprintf(fd, "\t\tperror(\"Error in ltt_register_generic\");\n");
+	fprintf(fd, "#endif //LTT_SHOW_DEBUG\n");
+  fprintf(fd, "\t}\n");
+  fprintf(fd, "}\n");
+  fprintf(fd, "\n");
 
 	fclose(fd);
 
@@ -1220,7 +2734,6 @@ facility_t *ltt_facility_open(char * pathname)
 	char *token;
 	parse_file_t in;
 	facility_t * fac = NULL;
-	unsigned long checksum;
 	char buffer[BUFFER_SIZE];
 	int generated = FALSE;
 
@@ -1247,7 +2760,23 @@ facility_t *ltt_facility_open(char * pathname)
 		
 		if(strcmp(token, "<")) in.error(&in,"not a facility file");
 		token = getName(&in);
+		if(strcmp(token, "?")) in.error(&in,"not a facility file");
+		token = getName(&in);
+		if(strcmp(token, "xml")) in.error(&in,"not a facility file");
+		token = getName(&in);
+		if(strcmp(token, "version")) in.error(&in,"not a facility file");
+		token = getName(&in);
+		if(strcmp(token, "=")) in.error(&in,"not a facility file");
+		token = getQuotedString(&in);
+		if(strcmp(token, "1.0")) in.error(&in,"not a facility file");
+		token = getName(&in);
+		if(strcmp(token, "?")) in.error(&in,"not a facility file");
+		token = getToken(&in);
+		if(strcmp(token, ">")) in.error(&in,"not a facility file");
 
+		token = getName(&in);
+		if(strcmp(token, "<")) in.error(&in,"not a facility file");
+		token = getName(&in);
 		if(strcmp("facility",token) == 0) {
 			fac = malloc(sizeof(facility_t));
 			fac->name = NULL;
@@ -1261,7 +2790,7 @@ facility_t *ltt_facility_open(char * pathname)
 			//check if any namedType is not defined
 			checkNamedTypesImplemented(&fac->named_types);
 		
-			generateChecksum(fac->name, &checksum, &fac->events);
+			generateChecksum(fac->name, &fac->checksum, &fac->events);
 			
 			generated = TRUE;
 		}
@@ -1369,12 +2898,18 @@ int main(int argc, char **argv)
 	
 	/* ltt-facility-loader-name.h : facility specific loader info.
 	 * loader_header */
-	err = print_loader_header(fac);
+	if(!fac->user)
+		err = print_loader_header(fac);
+	else
+		err = print_loader_header_user(fac);
 	if(err)	return err;
 
 	/* ltt-facility-loader-name.c : generic faciilty loader
 	 * loader_c */
-	err = print_loader_c(fac);
+	if(!fac->user)
+		err = print_loader_c(fac);
+	else
+		err = print_loader_c_user(fac);
 	if(err)	return err;
 
 	/* close the facility */