#ifndef BLKTRACE_H

#define BLKTRACE_H

#include <stdio.h>

#include <limits.h>

#include <byteswap.h>

#include <endian.h>

#include <sys/types.h>

#include "blktrace_api.h"

#include "rbtree.h"

#define MINORBITS	20

#define MINORMASK	((1U << MINORBITS) - 1)

#define MAJOR(dev)	((unsigned int) ((dev) >> MINORBITS))

#define MINOR(dev)	((unsigned int) ((dev) & MINORMASK))

#define SECONDS(x) 		((unsigned long long)(x) / 1000000000)

#define NANO_SECONDS(x)		((unsigned long long)(x) % 1000000000)

#define DOUBLE_TO_NANO_ULL(d)	((unsigned long long)((d) * 1000000000))

#define min(a, b)	((a) < (b) ? (a) : (b))

#define max(a, b)	((a) > (b) ? (a) : (b))

#define t_sec(t)	((t)->bytes >> 9)

#define t_kb(t)		((t)->bytes >> 10)

#define t_b(t)		((t)->bytes & 1023)

typedef __u32 u32;

typedef __u8 u8;

struct io_stats {

	unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites;

	unsigned long ireads, iwrites, rrqueue, wrqueue;

	unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb;

	unsigned long long qread_b, qwrite_b, cread_b, cwrite_b;

	unsigned long long iread_kb, iwrite_kb;

	unsigned long long mread_kb, mwrite_kb;

	unsigned long long mread_b, mwrite_b, iread_b, iwrite_b;

	unsigned long qreads_pc, qwrites_pc, ireads_pc, iwrites_pc;

	unsigned long rrqueue_pc, wrqueue_pc, creads_pc, cwrites_pc;

	unsigned long long qread_kb_pc, qwrite_kb_pc, iread_kb_pc, iwrite_kb_pc;

	unsigned long long qread_b_pc, qwrite_b_pc, iread_b_pc, iwrite_b_pc;

	unsigned long io_unplugs, timer_unplugs;

};

struct per_cpu_info {

	unsigned int cpu;

	unsigned int nelems;

	int fd;

	int fdblock;

	char fname[PATH_MAX];

	struct io_stats io_stats;

	struct rb_root rb_last;

	unsigned long rb_last_entries;

	unsigned long last_sequence;

	unsigned long smallest_seq_read;

	struct skip_info *skips_head;

	struct skip_info *skips_tail;

};

extern FILE *ofp;

extern int data_is_native;

extern struct timespec abs_start_time;

#define CHECK_MAGIC(t)		(((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)

#define SUPPORTED_VERSION	(0x07)

#if __BYTE_ORDER == __LITTLE_ENDIAN

#define be16_to_cpu(x)		__bswap_16(x)

#define be32_to_cpu(x)		__bswap_32(x)

#define be64_to_cpu(x)		__bswap_64(x)

#define cpu_to_be16(x)		__bswap_16(x)

#define cpu_to_be32(x)		__bswap_32(x)

#define cpu_to_be64(x)		__bswap_64(x)

#elif __BYTE_ORDER == __BIG_ENDIAN

#define be16_to_cpu(x)		(x)

#define be32_to_cpu(x)		(x)

#define be64_to_cpu(x)		(x)

#define cpu_to_be16(x)		(x)

#define cpu_to_be32(x)		(x)

#define cpu_to_be64(x)		(x)

#else

#error "Bad arch"

#endif

static inline int verify_trace(struct blk_io_trace *t)

{

	if (!CHECK_MAGIC(t)) {

		fprintf(stderr, "bad trace magic %x\n", t->magic);

		return 1;

	}

	if ((t->magic & 0xff) != SUPPORTED_VERSION) {

		fprintf(stderr, "unsupported trace version %x\n", 

			t->magic & 0xff);

		return 1;

	}

	return 0;

}

static inline void trace_to_cpu(struct blk_io_trace *t)

{

	if (data_is_native)

		return;

	t->magic	= be32_to_cpu(t->magic);

	t->sequence	= be32_to_cpu(t->sequence);

	t->time		= be64_to_cpu(t->time);

	t->sector	= be64_to_cpu(t->sector);

	t->bytes	= be32_to_cpu(t->bytes);

	t->action	= be32_to_cpu(t->action);

	t->pid		= be32_to_cpu(t->pid);

	t->device	= be32_to_cpu(t->device);

	t->cpu		= be32_to_cpu(t->cpu);

	t->error	= be16_to_cpu(t->error);

	t->pdu_len	= be16_to_cpu(t->pdu_len);

}

/*

 * check whether data is native or not

 */

static inline int check_data_endianness(u32 magic)

{

	if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {

		data_is_native = 1;

		return 0;

	}

	magic = __bswap_32(magic);

	if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {

		data_is_native = 0;

		return 0;

	}

	return 1;

}

extern void set_all_format_specs(char *);

extern int add_format_spec(char *);

extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *,

			unsigned long long, int, unsigned char *);

extern int valid_act_opt(int);

extern int find_mask_map(char *);

extern char *find_process_name(pid_t);

#endif