#ifndef __PERF_TOOL_H#define __PERF_TOOL_H #include <stdbool.h> struct perf_session;union perf_event;struct perf_evlist;struct perf_evsel;struct perf_sample;struct perf_tool;struct machine; typedef int (*event_sample)(struct perf_tool *tool, union perf_event *event,			    struct perf_sample *sample,			    struct perf_evsel *evsel, struct machine *machine); typedef int (*event_op)(struct perf_tool *tool, union perf_event *event,			struct perf_sample *sample, struct machine *machine); typedef int (*event_attr_op)(union perf_event *event,			     struct perf_evlist **pevlist);typedef int (*event_simple_op)(struct perf_tool *tool, union perf_event *event); typedef int (*event_synth_op)(union perf_event *event,			      struct perf_session *session); typedef int (*event_op2)(struct perf_tool *tool, union perf_event *event,			 struct perf_session *session); struct perf_tool {	event_sample	sample,			read;	event_op	mmap,			comm,			fork,			exit,			lost,			throttle,			unthrottle;	event_attr_op	attr;	event_synth_op	tracing_data;	event_simple_op	event_type;	event_op2	finished_round,			build_id;	bool		ordered_samples;	bool		ordering_requires_timestamps;}; #endif /* __PERF_TOOL_H */