patch-2.1.44 linux/include/linux/simp.h

• Lines: 40
• Date: Mon Jul 7 08:26:24 1997
• Orig file: v2.1.43/linux/include/linux/simp.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/include/linux/simp.h linux/include/linux/simp.h
@@ -0,0 +1,39 @@
+/*
+ * include/linux/simp.h  -- simple allocator for cached objects
+ *
+ * This is meant as a faster and simpler (not full-featured) replacement
+ * for SLAB, thus the name "simp" :-)
+ *
+ * (C) 1997 Thomas Schoebel-Theuer
+ */
+
+#ifndef SIMP_H
+#define SIMP_H
+
+/* used for constructors / destructors */
+typedef void (*structor)(void *);
+
+/* create an object cache */
+/* positive clearable_offset means the next two pointers at that offset
+ * can be internally used for freelist pointers when the object is
+ * deallocated / not in use;
+ * if there is no space inside the element that can be reused for
+ * this purpose, supply -1. Using positive offsets is essential for
+ * saving space with very small-sized objects.
+ *
+ * Note for big-sized objects in the range of whole pages, use
+ * the fast Linux page allocator instead, directly.
+ */
+extern struct simp * simp_create(char * name, long size, long clearable_offset,
+				 structor first_ctor, 
+				 structor again_ctor, 
+				 structor dtor);
+
+/* alloc / dealloc routines */
+extern void * simp_alloc(struct simp * simp);
+extern void simp_free(void * objp);
+
+/* garbage collection */
+extern long simp_garbage(void);
+
+#endif