tracecmd/include/trace-local.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
 *
 */
#ifndef __TRACE_LOCAL_H
#define __TRACE_LOCAL_H

#include <sys/types.h>
#include <dirent.h>	/* for DIR */

#include "trace-cmd.h"
#include "event-utils.h"

extern int debug;
extern int quiet;

/* fix stupid glib guint64 typecasts and printf formats */
typedef unsigned long long u64;

struct buffer_instance;

/* for local shared information with trace-cmd executable */

void usage(char **argv);

extern int silence_warnings;
extern int show_status;

struct pid_record_data {
	int			pid;
	int			brass[2];
	int			cpu;
	int			closed;
	struct tracecmd_input	*stream;
	struct buffer_instance	*instance;
	struct pevent_record	*record;
};

void show_file(const char *name);

struct tracecmd_input *read_trace_header(const char *file);
int read_trace_files(void);

void trace_record(int argc, char **argv);

void trace_stop(int argc, char **argv);

void trace_restart(int argc, char **argv);

void trace_reset(int argc, char **argv);

void trace_start(int argc, char **argv);

void trace_extract(int argc, char **argv);

void trace_stream(int argc, char **argv);

void trace_profile(int argc, char **argv);

void trace_report(int argc, char **argv);

void trace_split(int argc, char **argv);

void trace_listen(int argc, char **argv);

void trace_restore(int argc, char **argv);

void trace_clear(int argc, char **argv);

void trace_check_events(int argc, char **argv);

void trace_stack(int argc, char **argv);

void trace_option(int argc, char **argv);

void trace_hist(int argc, char **argv);

void trace_snapshot(int argc, char **argv);

void trace_mem(int argc, char **argv);

void trace_stat(int argc, char **argv);

void trace_show(int argc, char **argv);

void trace_list(int argc, char **argv);

void trace_usage(int argc, char **argv);

struct hook_list;

void trace_init_profile(struct tracecmd_input *handle, struct hook_list *hooks,
			int global);
int do_trace_profile(void);
void trace_profile_set_merge_like_comms(void);

struct tracecmd_input *
trace_stream_init(struct buffer_instance *instance, int cpu, int fd, int cpus,
		  struct hook_list *hooks,
		  tracecmd_handle_init_func handle_init, int global);
int trace_stream_read(struct pid_record_data *pids, int nr_pids, struct timeval *tv);

void trace_show_data(struct tracecmd_input *handle, struct pevent_record *record);

/* --- event interation --- */

/*
 * Use this to iterate through the event directories
 */


enum event_process {
	PROCESSED_NONE,
	PROCESSED_EVENT,
	PROCESSED_SYSTEM
};

enum process_type {
	PROCESS_EVENT,
	PROCESS_SYSTEM
};

struct event_iter {
	DIR *system_dir;
	DIR *event_dir;
	struct dirent *system_dent;
	struct dirent *event_dent;
};

enum event_iter_type {
	EVENT_ITER_NONE,
	EVENT_ITER_SYSTEM,
	EVENT_ITER_EVENT
};

struct event_iter *trace_event_iter_alloc(const char *path);
enum event_iter_type trace_event_iter_next(struct event_iter *iter,
					   const char *path, const char *system);
void trace_event_iter_free(struct event_iter *iter);

char *append_file(const char *dir, const char *name);
char *get_file_content(const char *file);

char *strstrip(char *str);

/* --- instance manipulation --- */

enum buffer_instance_flags {
	BUFFER_FL_KEEP		= 1 << 0,
	BUFFER_FL_PROFILE	= 1 << 1,
};

struct func_list {
	struct func_list *next;
	const char *func;
	const char *mod;
};

struct buffer_instance {
	struct buffer_instance	*next;
	const char		*name;
	char			*cpumask;
	struct event_list	*events;
	struct event_list	**event_next;

	struct event_list	*sched_switch_event;
	struct event_list	*sched_wakeup_event;
	struct event_list	*sched_wakeup_new_event;

	const char		*plugin;
	char			*filter_mod;
	struct func_list	*filter_funcs;
	struct func_list	*notrace_funcs;

	const char		*clock;

	struct trace_seq	*s_save;
	struct trace_seq	*s_print;

	struct tracecmd_input	*handle;

	struct tracecmd_msg_handle *msg_handle;
	struct tracecmd_output *network_handle;

	int			flags;
	int			tracing_on_init_val;
	int			tracing_on_fd;
	int			buffer_size;
	int			cpu_count;
};

extern struct buffer_instance top_instance;
extern struct buffer_instance *buffer_instances;
extern struct buffer_instance *first_instance;

#define for_each_instance(i) for (i = buffer_instances; i; i = (i)->next)
#define for_all_instances(i) for (i = first_instance; i; \
				  i = i == &top_instance ? buffer_instances : (i)->next)

struct buffer_instance *create_instance(const char *name);
void add_instance(struct buffer_instance *instance, int cpu_count);
char *get_instance_file(struct buffer_instance *instance, const char *file);
void update_first_instance(struct buffer_instance *instance, int topt);

void show_instance_file(struct buffer_instance *instance, const char *name);

int count_cpus(void);

/* No longer in event-utils.h */
void __noreturn die(const char *fmt, ...); /* Can be overriden */
void *malloc_or_die(unsigned int size); /* Can be overridden */
void __noreturn __die(const char *fmt, ...);
void __noreturn _vdie(const char *fmt, va_list ap);

#endif /* __TRACE_LOCAL_H */