/* * thread-stack.h: Synthesize a thread's stack using call / return events * Copyright (c) 2014, Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for * more details. * */ #ifndef __PERF_THREAD_STACK_H#define __PERF_THREAD_STACK_H #include <sys/types.h> #include <linux/types.h> struct thread;struct comm;struct ip_callchain;struct symbol;struct dso;struct comm;struct perf_sample;struct addr_location;struct call_path; /* * Call/Return flags. * * CALL_RETURN_NO_CALL: 'return' but no matching 'call' * CALL_RETURN_NO_RETURN: 'call' but no matching 'return' */enum {	CALL_RETURN_NO_CALL	= 1 << 0,	CALL_RETURN_NO_RETURN	= 1 << 1,}; /** * struct call_return - paired call/return information. * @thread: thread in which call/return occurred * @comm: comm in which call/return occurred * @cp: call path * @call_time: timestamp of call (if known) * @return_time: timestamp of return (if known) * @branch_count: number of branches seen between call and return * @call_ref: external reference to 'call' sample (e.g. db_id) * @return_ref:  external reference to 'return' sample (e.g. db_id) * @db_id: id used for db-export * @flags: Call/Return flags */struct call_return {	struct thread *thread;	struct comm *comm;	struct call_path *cp;	u64 call_time;	u64 return_time;	u64 branch_count;	u64 call_ref;	u64 return_ref;	u64 db_id;	u32 flags;}; /** * struct call_return_processor - provides a call-back to consume call-return *                                information. * @cpr: call path root * @process: call-back that accepts call/return information * @data: anonymous data for call-back */struct call_return_processor {	struct call_path_root *cpr;	int (*process)(struct call_return *cr, void *data);	void *data;}; int thread_stack__event(struct thread *thread, u32 flags, u64 from_ip,			u64 to_ip, u16 insn_len, u64 trace_nr);void thread_stack__set_trace_nr(struct thread *thread, u64 trace_nr);void thread_stack__sample(struct thread *thread, struct ip_callchain *chain,			  size_t sz, u64 ip);int thread_stack__flush(struct thread *thread);void thread_stack__free(struct thread *thread);size_t thread_stack__depth(struct thread *thread); struct call_return_processor *call_return_processor__new(int (*process)(struct call_return *cr, void *data),			   void *data);void call_return_processor__free(struct call_return_processor *crp);int thread_stack__process(struct thread *thread, struct comm *comm,			  struct perf_sample *sample,			  struct addr_location *from_al,			  struct addr_location *to_al, u64 ref,			  struct call_return_processor *crp); #endif