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-rw-r--r--libc/private/isc/heap.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/libc/private/isc/heap.h b/libc/private/isc/heap.h
new file mode 100644
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--- /dev/null
+++ b/libc/private/isc/heap.h
@@ -0,0 +1,49 @@
+/* $NetBSD: heap.h,v 1.1.1.1 2004/05/20 19:49:41 christos Exp $ */
+
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1997,1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+typedef int (*heap_higher_priority_func)(void *, void *);
+typedef void (*heap_index_func)(void *, int);
+typedef void (*heap_for_each_func)(void *, void *);
+
+typedef struct heap_context {
+ int array_size;
+ int array_size_increment;
+ int heap_size;
+ void **heap;
+ heap_higher_priority_func higher_priority;
+ heap_index_func index;
+} *heap_context;
+
+#define heap_new __heap_new
+#define heap_free __heap_free
+#define heap_insert __heap_insert
+#define heap_delete __heap_delete
+#define heap_increased __heap_increased
+#define heap_decreased __heap_decreased
+#define heap_element __heap_element
+#define heap_for_each __heap_for_each
+
+heap_context heap_new(heap_higher_priority_func, heap_index_func, int);
+int heap_free(heap_context);
+int heap_insert(heap_context, void *);
+int heap_delete(heap_context, int);
+int heap_increased(heap_context, int);
+int heap_decreased(heap_context, int);
+void * heap_element(heap_context, int);
+int heap_for_each(heap_context, heap_for_each_func, void *);