X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/359df77829d85c6a415220fb4f21d5331323c79f..2b645fb792c62ae0d38fcde4c39e1bd0889b0e06:/lmem.h

diff --git a/lmem.h b/lmem.h
index 8546dcf..3f84c6e 100644
--- a/lmem.h
+++ b/lmem.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: lmem.h,v 1.1 1999/12/22 16:02:52 mdw Exp $
+ * $Id: lmem.h,v 1.4 2000/12/06 20:33:27 mdw Exp $
  *
  * Locked memory allocation
  *
@@ -30,6 +30,16 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: lmem.h,v $
+ * Revision 1.4  2000/12/06 20:33:27  mdw
+ * Make flags be macros rather than enumerations, to ensure that they're
+ * unsigned.
+ *
+ * Revision 1.3  2000/07/29 21:58:15  mdw
+ * (l_destroy): New function for destroying locked memory blocks.
+ *
+ * Revision 1.2  2000/06/17 11:29:38  mdw
+ * Add arena support.
+ *
  * Revision 1.1  1999/12/22 16:02:52  mdw
  * Interface to allocating `locked' memory (which isn't paged out).
  *
@@ -46,6 +56,7 @@
 
 #include <stddef.h>
 
+#include <mLib/arena.h>
 #include <mLib/dstr.h>
 
 /*----- Data structures ---------------------------------------------------*/
@@ -65,13 +76,13 @@ typedef struct l_node {
   unsigned f;				/* Various flags */
 } l_node;
 
-enum {
-  LF_ALLOC = 1
-};
+#define LF_ALLOC 1u
 
 /* --- Locked memory buffer state --- */
 
 typedef struct lmem {
+  arena a;				/* Arena header block */
+  unsigned f;				/* Various flags */
   char *p;				/* Pointer to locked buffer */
   l_node *l;				/* Pointer to block list */
   size_t sz;				/* Size of locked buffer */
@@ -79,6 +90,8 @@ typedef struct lmem {
   int err; char *emsg;			/* Error indicators */
 } lmem;
 
+#define LF_LOCKED 1u
+
 /*----- Functions provided ------------------------------------------------*/
 
 /* --- @l_init@ --- *
@@ -135,6 +148,17 @@ extern void l_free(lmem */*lm*/, void */*p*/);
 
 extern void l_purge(lmem */*lm*/);
 
+/* --- @l_destroy@ --- *
+ *
+ * Arguments:	@lmem *lm@ = pointer to locked memory descriptor
+ *
+ * Returns:	---
+ *
+ * Use:		Disposes of a locked memory arena permanently.
+ */
+
+extern void l_destroy(lmem */*lm*/);
+
 /* --- @l_report@ --- *
  *
  * Arguments:	@lmem *lm@ = pointer to locked memory descriptor