session.h

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#ifndef __PERF_SESSION_H
#define __PERF_SESSION_H

#include "hist.h"
#include "event.h"
#include "header.h"
#include "symbol.h"
#include "thread.h"
#include <linux/rbtree.h>
#include <linux/perf_event.h>

struct sample_queue;
struct ip_callchain;
struct thread;

struct ordered_samples {
    u64         last_flush;
    u64         next_flush;
    u64         max_timestamp;
    struct list_head    samples;
    struct list_head    sample_cache;
    struct list_head    to_free;
    struct sample_queue *sample_buffer;
    struct sample_queue *last_sample;
    int         sample_buffer_idx;
    unsigned int        nr_samples;
};

struct perf_session {
    struct perf_header  header;
    unsigned long       size;
    unsigned long       mmap_window;
    struct machine      host_machine;
    struct rb_root      machines;
    struct perf_evlist  *evlist;
    struct pevent       *pevent;
    /*
     * FIXME: Need to split this up further, we need global
     *    stats + per event stats.
     */
    struct hists        hists;
    int         fd;
    bool            fd_pipe;
    bool            repipe;
    int         cwdlen;
    char            *cwd;
    struct ordered_samples  ordered_samples;
    char            filename[1];
};

struct perf_tool;

struct perf_session *perf_session__new(const char *filename, int mode,
                       bool force, bool repipe,
                       struct perf_tool *tool);
void perf_session__delete(struct perf_session *self);

void perf_event_header__bswap(struct perf_event_header *self);

int __perf_session__process_events(struct perf_session *self,
                   u64 data_offset, u64 data_size, u64 size,
                   struct perf_tool *tool);
int perf_session__process_events(struct perf_session *self,
                 struct perf_tool *tool);

int perf_session__resolve_callchain(struct perf_session *self, struct perf_evsel *evsel,
                    struct thread *thread,
                    struct ip_callchain *chain,
                    struct symbol **parent);

struct branch_info *machine__resolve_bstack(struct machine *self,
                        struct thread *thread,
                        struct branch_stack *bs);

bool perf_session__has_traces(struct perf_session *self, const char *msg);

void mem_bswap_64(void *src, int byte_size);
void mem_bswap_32(void *src, int byte_size);
void perf_event__attr_swap(struct perf_event_attr *attr);

int perf_session__create_kernel_maps(struct perf_session *self);

void perf_session__set_id_hdr_size(struct perf_session *session);
void perf_session__remove_thread(struct perf_session *self, struct thread *th);

static inline
struct machine *perf_session__find_host_machine(struct perf_session *self)
{
    return &self->host_machine;
}

static inline
struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
{
    if (pid == HOST_KERNEL_ID)
        return &self->host_machine;
    return machines__find(&self->machines, pid);
}

static inline
struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
{
    if (pid == HOST_KERNEL_ID)
        return &self->host_machine;
    return machines__findnew(&self->machines, pid);
}

static inline
void perf_session__process_machines(struct perf_session *self,
                    struct perf_tool *tool,
                    machine__process_t process)
{
    process(&self->host_machine, tool);
    return machines__process(&self->machines, process, tool);
}

struct thread *perf_session__findnew(struct perf_session *self, pid_t pid);
size_t perf_session__fprintf(struct perf_session *self, FILE *fp);

size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp);

size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
                      FILE *fp, bool with_hits);

size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp);

struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
                        unsigned int type);

void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
              struct perf_sample *sample, struct machine *machine,
              int print_sym, int print_dso, int print_symoffset);

int perf_session__cpu_bitmap(struct perf_session *session,
                 const char *cpu_list, unsigned long *cpu_bitmap);

void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);

struct perf_evsel_str_handler;

int __perf_session__set_tracepoints_handlers(struct perf_session *session,
                         const struct perf_evsel_str_handler *assocs,
                         size_t nr_assocs);

#define perf_session__set_tracepoints_handlers(session, array) \
    __perf_session__set_tracepoints_handlers(session, array, ARRAY_SIZE(array))
#endif /* __PERF_SESSION_H */