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
  19 struct addr_location;
  20 struct map;
  21 struct perf_record_namespaces;
  22 struct thread_stack;
  23 struct unwind_libunwind_ops;
  24
  25 struct 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
  32 struct 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
  64 struct machine;
  65 struct namespaces;
  66 struct comm;
  67
  68 struct thread *thread__new(pid_t pid, pid_t tid);
  69 int thread__init_maps(struct thread *thread, struct machine *machine);
  70 void thread__delete(struct thread *thread);
  71
  72 struct thread *thread__get(struct thread *thread);
  73 void thread__put(struct thread *thread);
  74
  75 static 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
  83 static inline void thread__exited(struct thread *thread)
  84 {
  85         thread->dead = true;
  86 }
  87
  88 struct namespaces *thread__namespaces(struct thread *thread);
  89 int thread__set_namespaces(struct thread *thread, u64 timestamp,
  90                            struct perf_record_namespaces *event);
  91
  92 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
  93                        bool exec);
  94 static 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
 100 int thread__set_comm_from_proc(struct thread *thread);
 101
 102 int thread__comm_len(struct thread *thread);
 103 struct comm *thread__comm(const struct thread *thread);
 104 struct comm *thread__exec_comm(const struct thread *thread);
 105 const char *thread__comm_str(struct thread *thread);
 106 int thread__insert_map(struct thread *thread, struct map *map);
 107 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone);
 108 size_t thread__fprintf(struct thread *thread, FILE *fp);
 109
 110 struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
 111
 112 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
 113                              struct addr_location *al);
 114 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
 115                                 struct addr_location *al);
 116
 117 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
 118                                    u64 addr, struct addr_location *al);
 119 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
 120                                       u64 addr, struct addr_location *al);
 121
 122 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
 123                                         struct addr_location *al);
 124
 125 int thread__memcpy(struct thread *thread, struct machine *machine,
 126                    void *buf, u64 ip, int len, bool *is64bit);
 127
 128 static inline void *thread__priv(struct thread *thread)
 129 {
 130         return thread->priv;
 131 }
 132
 133 static inline void thread__set_priv(struct thread *thread, void *p)
 134 {
 135         thread->priv = p;
 136 }
 137
 138 static 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
 158 void thread__free_stitch_list(struct thread *thread);
 159
 160 #endif  /* __PERF_THREAD_H */