/*
 * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2012, 2019 by Delphix. All rights reserved.
 */

#ifndef _SYS_ZFS_DEBUG_H
#define _SYS_ZFS_DEBUG_H

#ifdef  __cplusplus
extern "C" {
#endif

#ifndef TRUE
#define TRUE 1
#endif

#ifndef FALSE
#define FALSE 0
#endif

/*
 * ZFS debugging
 */

#if defined(DEBUG) || !defined(_KERNEL)
#define ZFS_DEBUG
#endif

extern int zfs_flags;
extern boolean_t zfs_recover;
extern boolean_t zfs_free_leak_on_eio;

#define ZFS_DEBUG_DPRINTF               (1 << 0)
#define ZFS_DEBUG_DBUF_VERIFY           (1 << 1)
#define ZFS_DEBUG_DNODE_VERIFY          (1 << 2)
#define ZFS_DEBUG_SNAPNAMES             (1 << 3)
#define ZFS_DEBUG_MODIFY                (1 << 4)
/* 1<<5 was previously used, try not to reuse */
#define ZFS_DEBUG_ZIO_FREE              (1 << 6)
#define ZFS_DEBUG_HISTOGRAM_VERIFY      (1 << 7)
#define ZFS_DEBUG_METASLAB_VERIFY       (1 << 8)
#define ZFS_DEBUG_INDIRECT_REMAP        (1 << 9)
#define ZFS_DEBUG_TRIM                  (1 << 11)
#define ZFS_DEBUG_LOG_SPACEMAP          (1 << 12)

#ifdef ZFS_DEBUG
extern void __dprintf(const char *file, const char *func,
    int line, const char *fmt, ...);
#define dprintf_zfs(...) \
        if (zfs_flags & ZFS_DEBUG_DPRINTF) \
                __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
#else
#define dprintf_zfs(...) ((void)0)
#endif /* ZFS_DEBUG */

extern void zfs_panic_recover(const char *fmt, ...);

typedef struct zfs_dbgmsg {
        list_node_t zdm_node;
        time_t zdm_timestamp;
        hrtime_t zdm_hrtime;
        char zdm_msg[1]; /* variable length allocation */
} zfs_dbgmsg_t;

extern void zfs_dbgmsg_init(void);
extern void zfs_dbgmsg_fini(void);
extern void zfs_dbgmsg(const char *fmt, ...);
extern void zfs_dbgmsg_print(const char *tag);

#ifndef _KERNEL
extern int dprintf_find_string(const char *string);
#endif

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_ZFS_DEBUG_H */