First look at data structures. More to come tomorrow...

1 files changed, 70 insertions, 0 deletions

diff --git a/lib/resource.h b/lib/resource.h
new file mode 100644
index 0000000..a1d229e
--- /dev/null
+++ b/lib/resource.h
@@ -0,0 +1,70 @@
+/*
+ *	BIRD Resource Manager
+ *
+ *	(c) 1998 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_RESOURCE_H_
+#define _BIRD_RESOURCE_H_
+
+#include <lib/lists.h>
+
+/* Resource */
+
+typedef struct resource {
+	node n;				/* Inside resource pool */
+	struct resclass *class;		/* Resource class */
+} resource;
+
+/* Resource class */
+
+struct resclass {
+	char *name;			/* Resource class name */
+	unsigned size;			/* Standard size of single resource */
+	void (*free)(resource *);	/* Freeing function */
+	void (*dump)(resource *);	/* Dump to debug output */
+};
+
+/* Generic resource manipulation */
+
+typedef struct pool pool;
+
+pool *rp_new(pool *);			/* Create new pool */
+void rp_init(pool *);			/* Initialize static pool */
+void rp_empty(pool *);			/* Free everything in the pool */
+void rfree(void *);			/* Free single resource */
+void rdump(void *);			/* Dump to debug output */
+
+void ralloc(pool *, struct resclass *);
+
+/* Normal memory blocks */
+
+void *mb_alloc(pool *, unsigned size);
+void *mb_free(void *);
+
+/* Memory pools with linear allocation */
+
+typedef struct mempool mempool;
+
+mempool *mp_new(pool *, unsigned blk);
+void mp_trim(pool *);				/* Free unused memory */
+void *mp_alloc(mempool *, unsigned size);	/* Aligned */
+void *mp_allocu(mempool *, unsigned size);	/* Unaligned */
+void *mp_allocz(mempool *, unsigned size);	/* With clear */
+
+/* Slabs */
+
+typedef struct slab slab;
+
+slab *sl_new(pool *, unsigned size);
+void *sl_alloc(slab *);
+void sl_free(slab *, void *);
+
+/* Low-level memory allocation functions, please don't use */
+
+void *xmalloc(unsigned);
+#define xfree(x) free(x)
+
+#endif