Add an internal-representation no-op function.

[u/mdw/catacomb] / lmem.h

diff --git a/lmem.h b/lmem.h
index 8f24903..3f84c6e 100644 (file)
--- a/lmem.h
+++ b/lmem.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: lmem.h,v 1.2 2000/06/17 11:29:38 mdw Exp $
+ * $Id: lmem.h,v 1.4 2000/12/06 20:33:27 mdw Exp $
  *
  * Locked memory allocation
  *
@@ -30,6 +30,13 @@
 /*----- 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.
  *
@@ -69,14 +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 */
@@ -84,12 +90,7 @@ typedef struct lmem {
   int err; char *emsg;                 /* Error indicators */
 } lmem;
 
-/* --- Locked memory arena --- */
-
-typedef struct lmem_arena {
-  arena a;
-  lmem l;
-} lmem_arena;
+#define LF_LOCKED 1u
 
 /*----- Functions provided ------------------------------------------------*/
 
@@ -147,6 +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
@@ -163,19 +175,6 @@ extern void l_purge(lmem */*lm*/);
 
 extern int l_report(lmem */*lm*/, dstr */*d*/);
 
-/*----- Arena management --------------------------------------------------*/
-
-/* --- @l_arena@ --- *
- *
- * Arguments:  @lmem_arena *l@ = pointer to arena block
- *
- * Returns:    ---
- *
- * Use:                Initializes a locked-memory arena.
- */
-
-extern void l_arena(lmem_arena */*l*/);
-
 /*----- That's all, folks -------------------------------------------------*/
 
 #ifdef __cplusplus