#ifndef __PERF_HIST_H
#define __PERF_HIST_H

#include <linux/types.h>
#include <pthread.h>
#include "callchain.h"
#include "header.h"
#include "color.h"

extern struct callchain_param callchain_param;

struct hist_entry;
struct addr_location;
struct symbol;

/*
 * The kernel collects the number of events it couldn't send in a stretch and
 * when possible sends this number in a PERF_RECORD_LOST event. The number of
 * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
 * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
 * the sum of all struct lost_event.lost fields reported.
 *
 * The total_period is needed because by default auto-freq is used, so
 * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
 * the total number of low level events, it is necessary to to sum all struct
 * sample_event.period and stash the result in total_period.
 */
struct events_stats {
        u64 total_period;
        u64 total_lost;
        u64 total_invalid_chains;
        u32 nr_events[PERF_RECORD_HEADER_MAX];
        u32 nr_lost_warned;
        u32 nr_unknown_events;
        u32 nr_invalid_chains;
        u32 nr_unknown_id;
        u32 nr_unprocessable_samples;
};

enum hist_column {
        HISTC_SYMBOL,
        HISTC_DSO,
        HISTC_THREAD,
        HISTC_COMM,
        HISTC_PARENT,
        HISTC_CPU,
        HISTC_SRCLINE,
        HISTC_MISPREDICT,
        HISTC_SYMBOL_FROM,
        HISTC_SYMBOL_TO,
        HISTC_DSO_FROM,
        HISTC_DSO_TO,
        HISTC_LOCAL_WEIGHT,
        HISTC_GLOBAL_WEIGHT,
        HISTC_MEM_DADDR_SYMBOL,
        HISTC_MEM_DADDR_DSO,
        HISTC_MEM_LOCKED,
        HISTC_MEM_TLB,
        HISTC_MEM_LVL,
        HISTC_MEM_SNOOP,
        HISTC_NR_COLS, /* Last entry */
};

struct thread;
struct dso;

struct hists {
        struct rb_root          entries_in_array[2];
        struct rb_root          *entries_in;
        struct rb_root          entries;
        struct rb_root          entries_collapsed;
        u64                     nr_entries;
        const struct thread     *thread_filter;
        const struct dso        *dso_filter;
        const char              *uid_filter_str;
        const char              *symbol_filter_str;
        pthread_mutex_t         lock;
        struct events_stats     stats;
        u64                     event_stream;
        u16                     col_len[HISTC_NR_COLS];
};

struct hist_entry *__hists__add_entry(struct hists *self,
                                      struct addr_location *al,
                                      struct symbol *parent, u64 period,
                                      u64 weight);
int64_t hist_entry__cmp(struct hist_entry *left, struct hist_entry *right);
int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right);
int hist_entry__sort_snprintf(struct hist_entry *self, char *bf, size_t size,
                              struct hists *hists);
void hist_entry__free(struct hist_entry *);

struct hist_entry *__hists__add_branch_entry(struct hists *self,
                                             struct addr_location *al,
                                             struct symbol *sym_parent,
                                             struct branch_info *bi,
                                             u64 period,
                                             u64 weight);

struct hist_entry *__hists__add_mem_entry(struct hists *self,
                                          struct addr_location *al,
                                          struct symbol *sym_parent,
                                          struct mem_info *mi,
                                          u64 period,
                                          u64 weight);

void hists__output_resort(struct hists *self);
void hists__collapse_resort(struct hists *self);

void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
void hists__output_recalc_col_len(struct hists *hists, int max_rows);

void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h);
void hists__inc_nr_events(struct hists *self, u32 type);
void events_stats__inc(struct events_stats *stats, u32 type);
size_t events_stats__fprintf(struct events_stats *stats, FILE *fp);

size_t hists__fprintf(struct hists *self, bool show_header, int max_rows,
                      int max_cols, float min_pcnt, FILE *fp);

int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
int hist_entry__annotate(struct hist_entry *self, size_t privsize);

void hists__filter_by_dso(struct hists *hists);
void hists__filter_by_thread(struct hists *hists);
void hists__filter_by_symbol(struct hists *hists);

u16 hists__col_len(struct hists *self, enum hist_column col);
void hists__set_col_len(struct hists *self, enum hist_column col, u16 len);
bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len);
void hists__reset_col_len(struct hists *hists);
void hists__calc_col_len(struct hists *hists, struct hist_entry *he);

void hists__match(struct hists *leader, struct hists *other);
int hists__link(struct hists *leader, struct hists *other);

struct perf_hpp {
        char *buf;
        size_t size;
        const char *sep;
        void *ptr;
};

struct perf_hpp_fmt {
        int (*header)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp);
        int (*width)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp);
        int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
                     struct hist_entry *he);
        int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
                     struct hist_entry *he);

        struct list_head list;
};

extern struct list_head perf_hpp__list;

#define perf_hpp__for_each_format(format) \
        list_for_each_entry(format, &perf_hpp__list, list)

extern struct perf_hpp_fmt perf_hpp__format[];

enum {
        /* Matches perf_hpp__format array. */
        PERF_HPP__OVERHEAD,
        PERF_HPP__OVERHEAD_SYS,
        PERF_HPP__OVERHEAD_US,
        PERF_HPP__OVERHEAD_GUEST_SYS,
        PERF_HPP__OVERHEAD_GUEST_US,
        PERF_HPP__SAMPLES,
        PERF_HPP__PERIOD,

        PERF_HPP__MAX_INDEX
};

void perf_hpp__init(void);
void perf_hpp__column_register(struct perf_hpp_fmt *format);
void perf_hpp__column_enable(unsigned col);

static inline size_t perf_hpp__use_color(void)
{
        return !symbol_conf.field_sep;
}

static inline size_t perf_hpp__color_overhead(void)
{
        return perf_hpp__use_color() ?
               (COLOR_MAXLEN + sizeof(PERF_COLOR_RESET)) * PERF_HPP__MAX_INDEX
               : 0;
}

struct perf_evlist;

struct hist_browser_timer {
        void (*timer)(void *arg);
        void *arg;
        int refresh;
};

#ifdef SLANG_SUPPORT
#include "../ui/keysyms.h"
int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
                             struct hist_browser_timer *hbt);

int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
                                  struct hist_browser_timer *hbt,
                                  float min_pcnt,
                                  struct perf_session_env *env);
int script_browse(const char *script_opt);
#else
static inline
int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __maybe_unused,
                                  const char *help __maybe_unused,
                                  struct hist_browser_timer *hbt __maybe_unused,
                                  float min_pcnt __maybe_unused,
                                  struct perf_session_env *env __maybe_unused)
{
        return 0;
}

static inline int hist_entry__tui_annotate(struct hist_entry *self
                                           __maybe_unused,
                                           struct perf_evsel *evsel
                                           __maybe_unused,
                                           struct hist_browser_timer *hbt
                                           __maybe_unused)
{
        return 0;
}

static inline int script_browse(const char *script_opt __maybe_unused)
{
        return 0;
}

#define K_LEFT  -1000
#define K_RIGHT -2000
#define K_SWITCH_INPUT_DATA -3000
#endif

#ifdef GTK2_SUPPORT
int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist, const char *help,
                                  struct hist_browser_timer *hbt __maybe_unused,
                                  float min_pcnt);
#else
static inline
int perf_evlist__gtk_browse_hists(struct perf_evlist *evlist __maybe_unused,
                                  const char *help __maybe_unused,
                                  struct hist_browser_timer *hbt __maybe_unused,
                                  float min_pcnt __maybe_unused)
{
        return 0;
}
#endif

unsigned int hists__sort_list_width(struct hists *self);
#endif  /* __PERF_HIST_H */