LXR linux/tools/perf/util/thread.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __PERF_THREAD_H
   3#define __PERF_THREAD_H
   4
   5#include <linux/refcount.h>
   6#include <linux/rbtree.h>
   7#include <linux/list.h>
   8#include <stdio.h>
   9#include <unistd.h>
  10#include <sys/types.h>
  11#include "srccode.h"
  12#include "symbol_conf.h"
  13#include <strlist.h>
  14#include <intlist.h>
  15#include "rwsem.h"
  16#include "event.h"
  17#include "callchain.h"
  18
  19struct addr_location;
  20struct map;
  21struct perf_record_namespaces;
  22struct thread_stack;
  23struct unwind_libunwind_ops;
  24
  25struct lbr_stitch {
  26        struct list_head                lists;
  27        struct list_head                free_lists;
  28        struct perf_sample              prev_sample;
  29        struct callchain_cursor_node    *prev_lbr_cursor;
  30};
  31
  32struct thread {
  33        union {
  34                struct rb_node   rb_node;
  35                struct list_head node;
  36        };
  37        struct maps             *maps;
  38        pid_t                   pid_; /* Not all tools update this */
  39        pid_t                   tid;
  40        pid_t                   ppid;
  41        int                     cpu;
  42        refcount_t              refcnt;
  43        bool                    comm_set;
  44        int                     comm_len;
  45        bool                    dead; /* if set thread has exited */
  46        struct list_head        namespaces_list;
  47        struct rw_semaphore     namespaces_lock;
  48        struct list_head        comm_list;
  49        struct rw_semaphore     comm_lock;
  50        u64                     db_id;
  51
  52        void                    *priv;
  53        struct thread_stack     *ts;
  54        struct nsinfo           *nsinfo;
  55        struct srccode_state    srccode_state;
  56        bool                    filter;
  57        int                     filter_entry_depth;
  58
  59        /* LBR call stack stitch */
  60        bool                    lbr_stitch_enable;
  61        struct lbr_stitch       *lbr_stitch;
  62};
  63
  64struct machine;
  65struct namespaces;
  66struct comm;
  67
  68struct thread *thread__new(pid_t pid, pid_t tid);
  69int thread__init_maps(struct thread *thread, struct machine *machine);
  70void thread__delete(struct thread *thread);
  71
  72struct thread *thread__get(struct thread *thread);
  73void thread__put(struct thread *thread);
  74
  75static inline void __thread__zput(struct thread **thread)
  76{
  77        thread__put(*thread);
  78        *thread = NULL;
  79}
  80
  81#define thread__zput(thread) __thread__zput(&thread)
  82
  83static inline void thread__exited(struct thread *thread)
  84{
  85        thread->dead = true;
  86}
  87
  88struct namespaces *thread__namespaces(struct thread *thread);
  89int thread__set_namespaces(struct thread *thread, u64 timestamp,
  90                           struct perf_record_namespaces *event);
  91
  92int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
  93                       bool exec);
  94static inline int thread__set_comm(struct thread *thread, const char *comm,
  95                                   u64 timestamp)
  96{
  97        return __thread__set_comm(thread, comm, timestamp, false);
  98}
  99
 100int thread__set_comm_from_proc(struct thread *thread);
 101
 102int thread__comm_len(struct thread *thread);
 103struct comm *thread__comm(const struct thread *thread);
 104struct comm *thread__exec_comm(const struct thread *thread);
 105const char *thread__comm_str(struct thread *thread);
 106int thread__insert_map(struct thread *thread, struct map *map);
 107int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone);
 108size_t thread__fprintf(struct thread *thread, FILE *fp);
 109
 110struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
 111
 112struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
 113                             struct addr_location *al);
 114struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
 115                                struct addr_location *al);
 116
 117struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
 118                                   u64 addr, struct addr_location *al);
 119struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
 120                                      u64 addr, struct addr_location *al);
 121
 122void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
 123                                        struct addr_location *al);
 124
 125int thread__memcpy(struct thread *thread, struct machine *machine,
 126                   void *buf, u64 ip, int len, bool *is64bit);
 127
 128static inline void *thread__priv(struct thread *thread)
 129{
 130        return thread->priv;
 131}
 132
 133static inline void thread__set_priv(struct thread *thread, void *p)
 134{
 135        thread->priv = p;
 136}
 137
 138static inline bool thread__is_filtered(struct thread *thread)
 139{
 140        if (symbol_conf.comm_list &&
 141            !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) {
 142                return true;
 143        }
 144
 145        if (symbol_conf.pid_list &&
 146            !intlist__has_entry(symbol_conf.pid_list, thread->pid_)) {
 147                return true;
 148        }
 149
 150        if (symbol_conf.tid_list &&
 151            !intlist__has_entry(symbol_conf.tid_list, thread->tid)) {
 152                return true;
 153        }
 154
 155        return false;
 156}
 157
 158void thread__free_stitch_list(struct thread *thread);
 159
 160#endif  /* __PERF_THREAD_H */
 161