All DMS opened by a program are now listed and closed with atexit system

src/obidms.c

@@ -34,6 +34,10 @@
 #define DEBUG_LEVEL 0	// TODO has to be defined somewhere else (cython compil flag?)
 
 
+// Initialize global list of opened DMS
+OBIDMS_p global_opened_dms_list[MAX_NB_OPENED_DMS+1] = { 0 };
+
+
 /**************************************************************************
  *
  * D E C L A R A T I O N   O F   T H E   P R I V A T E   F U N C T I O N S
@@ -98,6 +102,31 @@ static char* build_infos_file_name(const char* dms_name);
 int create_dms_infos_file(int dms_file_descriptor, const char* dms_name);
 
 
+/**
+ * Internal function adding a DMS in the global list of DMS opened by a program.
+ *
+ * @param dms A pointer on the DMS to add.
+ *
+ * @retval 0 if the operation was successfully completed.
+ * @retval -1 if an error occurred.
+ *
+ * @since October 2017
+ * @author Celine Mercier (celine.mercier@metabarcoding.org)
+ */
+static int list_dms(OBIDMS_p dms);
+
+
+/**
+ * Internal function removing a DMS from the global list of DMS opened by a program.
+ *
+ * @param dms A pointer on the DMS to remove.
+ *
+ * @since October 2017
+ * @author Celine Mercier (celine.mercier@metabarcoding.org)
+ */
+static void unlist_dms(OBIDMS_p dms);
+
+
 /************************************************************************
  *
  * D E F I N I T I O N   O F   T H E   P R I V A T E   F U N C T I O N S
@@ -202,11 +231,39 @@ int create_dms_infos_file(int dms_file_descriptor, const char* dms_name)
 		return -1;
 	}
 
-
 	return 0;
 }
 
 
+static int list_dms(OBIDMS_p dms)
+{
+	int i = 0;
+	while (global_opened_dms_list[i] != NULL)
+		i++;
+	if (i == (MAX_NB_OPENED_DMS-1))
+	{
+		obi_set_errno(OBIDMS_UNKNOWN_ERROR);
+		obidebug(1, "\nError opening a DMS: maximum number of DMS opened by a program reached");
+		return -1;
+	}
+	global_opened_dms_list[i] = dms;
+	return 0;
+}
+
+
+static void unlist_dms(OBIDMS_p dms)
+{
+	int i = 0;
+	while (global_opened_dms_list[i] != dms)
+		i++;
+	while (global_opened_dms_list[i] != NULL)
+	{
+		global_opened_dms_list[i] = global_opened_dms_list[i+1];
+		i++;
+	}
+}
+
+
 /**********************************************************************
  *
  * D E F I N I T I O N   O F   T H E   P U B L I C   F U N C T I O N S
@@ -538,6 +595,9 @@ OBIDMS_p obi_open_dms(const char* dms_path)
 	dms->opened_indexers = (Opened_indexers_list_p) malloc(sizeof(Opened_indexers_list_t));
 	(dms->opened_indexers)->nb_opened_indexers = 0;
 
+	// Add in the global list of opened DMS
+	list_dms(dms);
+
 	return dms;
 }
 
@@ -617,6 +677,10 @@ int obi_close_dms(OBIDMS_p dms)
 			free(dms);
 			return -1;
 		}
+
+		// Remove DMS from global list of opened DMS
+		unlist_dms(dms);
+
 		free(dms);
 	}
 
@@ -1085,5 +1149,14 @@ int obi_import_view(const char* dms_path_1, const char* dms_path_2, const char*
 }
 
 
+void obi_close_atexit()
+{
+	int i=0;
 
+	while (global_opened_dms_list[i] != NULL)
+	{
+        obi_close_dms(global_opened_dms_list[i]);
+		i++;
+	}
+}