--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: dspool.c,v 1.1 1999/05/21 22:15:26 mdw Exp $
+ *
+ * Provide pools of strings
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of the mLib utilities library.
+ *
+ * mLib is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * mLib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with mLib; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------*
+ *
+ * $Log: dspool.c,v $
+ * Revision 1.1 1999/05/21 22:15:26 mdw
+ * Dynamic string pool system, based on an idea from the `sw-tools'
+ * project. Could do with more work to make it really good.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stdio.h>
+
+#include "dspool.h"
+#include "dstr.h"
+#include "sub.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- @dspool_create@ --- *
+ *
+ * Arguments: @dspool *p@ = address of pool to create
+ * @size_t isz@ = initial size of new strings
+ *
+ * Returns: ---
+ *
+ * Use: Initializes a dynamic string pool.
+ */
+
+void dspool_create(dspool *p, size_t isz)
+{
+ p->free = 0;
+ p->isz = isz;
+}
+
+/* --- @dspool_destroy@ --- *
+ *
+ * Arguments: @dspool *p@ = pool to destroy
+ *
+ * Returns: ---
+ *
+ * Use: Releases all of the strings left in the pool. Any strings
+ * not put back into the pool aren't freed. However, the pool
+ * is still valid, and the active strings can be put back and
+ * released later.
+ */
+
+void dspool_destroy(dspool *p)
+{
+ dspoolstr *s = p->free;
+ while (s) {
+ dspoolstr *n = s->next;
+ DDESTROY(&s->ds);
+ DESTROY(s);
+ s = n;
+ }
+ p->free = 0;
+}
+
+/* --- @dspool_get@ --- *
+ *
+ * Arguments: @dspool *p@ = pointer to a string pool
+ *
+ * Returns: Pointer to a dynamic string.
+ *
+ * Use: Fetches a string from the pool. The string has space for at
+ * least @isz@ characters (where @isz@ is the size passed to
+ * @dspool_create@ for the pool).
+ */
+
+dstr *dspool_get(dspool *p) { dstr *d; DSGET(p, d); return (d); }
+
+/* --- @dspool_put@ --- *
+ *
+ * Arguments: @dspool *p@ = pointer to a string pool
+ * @dstr *d@ = pointer to a dynamic string from a string pool
+ *
+ * Returns: ---
+ *
+ * Use: Releases a dynamic string back into a string pool. It
+ * doesn't have to be the same pool the string actually came
+ * from, although it does have to have come from some string
+ * pool.
+ */
+
+void dspool_put(dspool *p, dstr *d) { DSPUT(p, d); }
+
+/*----- That's all, folks -------------------------------------------------*/
--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: dspool.h,v 1.1 1999/05/21 22:15:26 mdw Exp $
+ *
+ * Provide pools of strings
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of the mLib utilities library.
+ *
+ * mLib is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * mLib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with mLib; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------*
+ *
+ * $Log: dspool.h,v $
+ * Revision 1.1 1999/05/21 22:15:26 mdw
+ * Dynamic string pool system, based on an idea from the `sw-tools'
+ * project. Could do with more work to make it really good.
+ *
+ */
+
+#ifndef DSPOOL_H
+#define DSPOOL_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#include "dstr.h"
+#include "sub.h"
+
+/*----- Data structures ---------------------------------------------------*/
+
+typedef struct dspoolstr {
+ dstr ds;
+ struct dspoolstr *next;
+} dspoolstr;
+
+typedef struct dspool {
+ dspoolstr *free;
+ size_t isz;
+} dspool;
+
+/*----- Functions provided ------------------------------------------------*/
+
+/* --- @dspool_create@ --- *
+ *
+ * Arguments: @dspool *p@ = address of pool to create
+ * @size_t isz@ = initial size of new strings
+ *
+ * Returns: ---
+ *
+ * Use: Initializes a dynamic string pool.
+ */
+
+extern void dspool_create(dspool */*p*/, size_t /*isz*/);
+
+/* --- @dspool_destroy@ --- *
+ *
+ * Arguments: @dspool *p@ = pool to destroy
+ *
+ * Returns: ---
+ *
+ * Use: Releases all of the strings left in the pool. Any strings
+ * not put back into the pool aren't freed. However, the pool
+ * is still valid, and the active strings can be put back and
+ * released later.
+ */
+
+extern void dspool_destroy(dspool */*p*/);
+
+/* --- @dspool_get@ --- *
+ *
+ * Arguments: @dspool *p@ = pointer to a string pool
+ *
+ * Returns: Pointer to a dynamic string.
+ *
+ * Use: Fetches a string from the pool. The string has space for at
+ * least @isz@ characters (where @isz@ is the size passed to
+ * @dspool_create@ for the pool).
+ */
+
+extern dstr *dspool_get(dspool */*p*/);
+
+#define DSGET(p, d) do { \
+ dspoolstr *_s; \
+ dspool *_p = (p); \
+ if (_p->free) { \
+ _s = _p->free; \
+ _p->free = _s->next; \
+ } else { \
+ _s = CREATE(dspoolstr); \
+ DCREATE(&_s->ds); \
+ if (_p->isz) \
+ DENSURE(&_s->ds, _p->isz); \
+ } \
+ d = &_s->ds; \
+} while (0)
+
+/* --- @dspool_put@ --- *
+ *
+ * Arguments: @dspool *p@ = pointer to a string pool
+ * @dstr *d@ = pointer to a dynamic string from a string pool
+ *
+ * Returns: ---
+ *
+ * Use: Releases a dynamic string back into a string pool. It
+ * doesn't have to be the same pool the string actually came
+ * from, although it does have to have come from some string
+ * pool.
+ */
+
+extern void dspool_put(dspool */*p*/, dstr */*d*/);
+
+#define DSPUT(p, d) do { \
+ dspool *_p = (p); \
+ dspoolstr *_s = (dspoolstr *)(d); \
+ DRESET(d); \
+ _s->next = _p->free; \
+ _p->free = _s; \
+} while (0)
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif