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diff --git a/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_strtab.h b/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_strtab.h
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+++ b/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_strtab.h
@@ -0,0 +1,76 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _DT_STRTAB_H
+#define _DT_STRTAB_H
+
+#ifndef VBOX
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <sys/types.h>
+#else
+# include "VBoxDTraceTypes.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct dt_strhash {
+ const char *str_data; /* pointer to actual string data */
+ ulong_t str_buf; /* index of string data buffer */
+ size_t str_off; /* offset in bytes of this string */
+ size_t str_len; /* length in bytes of this string */
+ struct dt_strhash *str_next; /* next string in hash chain */
+} dt_strhash_t;
+
+typedef struct dt_strtab {
+ dt_strhash_t **str_hash; /* array of hash buckets */
+ ulong_t str_hashsz; /* size of hash bucket array */
+ char **str_bufs; /* array of buffer pointers */
+ char *str_ptr; /* pointer to current buffer location */
+ ulong_t str_nbufs; /* size of buffer pointer array */
+ size_t str_bufsz; /* size of individual buffer */
+ ulong_t str_nstrs; /* total number of strings in strtab */
+ size_t str_size; /* total size of strings in bytes */
+} dt_strtab_t;
+
+typedef ssize_t dt_strtab_write_f(const char *, size_t, size_t, void *);
+
+extern dt_strtab_t *dt_strtab_create(size_t);
+extern void dt_strtab_destroy(dt_strtab_t *);
+extern ssize_t dt_strtab_index(dt_strtab_t *, const char *);
+extern ssize_t dt_strtab_insert(dt_strtab_t *, const char *);
+extern size_t dt_strtab_size(const dt_strtab_t *);
+extern ssize_t dt_strtab_write(const dt_strtab_t *,
+ dt_strtab_write_f *, void *);
+extern ulong_t dt_strtab_hash(const char *, size_t *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _DT_STRTAB_H */