Create init and cleanup functions for wmem as a whole.

Call them from epan_init() and epan_cleanup().
Expose a permanent wmem scope for allocations that should only be freed when
epan is done (which is *not* necessarily when the program finishes).

svn path=/trunk/; revision=45805

epan/epan.c

@@ -50,6 +50,7 @@
 #include "addr_resolv.h"
 #include "oids.h"
 #include "emem.h"
+#include "wmem/wmem.h"
 #include "expert.h"
 
 #ifdef HAVE_LUA
@@ -83,8 +84,9 @@ epan_init(void (*register_all_protocols_func)(register_cb cb, gpointer client_da
 	init_report_err(report_failure_fcn_p, report_open_failure_fcn_p,
 	    report_read_failure_fcn_p, report_write_failure_fcn_p);
 
-	/* initialize memory allocation subsystem */
+	/* initialize memory allocation subsystems */
 	emem_init();
+	wmem_init();
 
 	/* initialize the GUID to name mapping table */
 	guids_init();
@@ -127,6 +129,7 @@ epan_cleanup(void)
 #endif
 	except_deinit();
 	host_name_lookup_cleanup();
+	wmem_cleanup();
 }
 
 void

epan/wmem/wmem_core.c

@@ -27,6 +27,9 @@
 
 #include "wmem_core.h"
 #include "wmem_allocator.h"
+#include "wmem_allocator_glib.h"
+
+static wmem_allocator_t *permanent_scope;
 
 void *
 wmem_alloc(wmem_allocator_t *allocator, size_t size)
@@ -57,6 +60,24 @@ wmem_destroy_allocator(wmem_allocator_t *allocator)
     allocator->destroy(allocator);
 }
 
+wmem_allocator_t *
+wmem_permanent_scope(void)
+{
+    return permanent_scope;
+}
+
+void
+wmem_init(void)
+{
+    permanent_scope = wmem_create_glib_allocator();
+}
+
+void
+wmem_cleanup(void)
+{
+    wmem_destroy_allocator(permanent_scope);
+}
+
 /*
  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
  *

epan/wmem/wmem_core.h

@@ -48,6 +48,15 @@ wmem_free_all(wmem_allocator_t *allocator);
 void
 wmem_destroy_allocator(wmem_allocator_t *allocator);
 
+wmem_allocator_t *
+wmem_permanent_scope(void);
+
+void
+wmem_init(void);
+
+void
+wmem_cleanup(void);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */