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
  17 struct addr_location;
  18 struct map;
  19 struct namespaces_event;
  20 struct thread_stack;
  21 struct unwind_libunwind_ops;
  22
  23 struct thread {
  24         union {
  25                 struct rb_node   rb_node;
  26                 struct list_head node;
  27         };
  28         struct map_groups       *mg;
  29         pid_t                   pid_; /* Not all tools update this */
  30         pid_t                   tid;
  31         pid_t                   ppid;
  32         int                     cpu;
  33         refcount_t              refcnt;
  34         bool                    comm_set;
  35         int                     comm_len;
  36         bool                    dead; /* if set thread has exited */
  37         struct list_head        namespaces_list;
  38         struct rw_semaphore     namespaces_lock;
  39         struct list_head        comm_list;
  40         struct rw_semaphore     comm_lock;
  41         u64                     db_id;
  42
  43         void                    *priv;
  44         struct thread_stack     *ts;
  45         struct nsinfo           *nsinfo;
  46         struct srccode_state    srccode_state;
  47 #ifdef HAVE_LIBUNWIND_SUPPORT
  48         void                            *addr_space;
  49         struct unwind_libunwind_ops     *unwind_libunwind_ops;
  50 #endif
  51         bool                    filter;
  52         int                     filter_entry_depth;
  53 };
  54
  55 struct machine;
  56 struct namespaces;
  57 struct comm;
  58
  59 struct thread *thread__new(pid_t pid, pid_t tid);
  60 int thread__init_map_groups(struct thread *thread, struct machine *machine);
  61 void thread__delete(struct thread *thread);
  62
  63 struct thread *thread__get(struct thread *thread);
  64 void thread__put(struct thread *thread);
  65
  66 static inline void __thread__zput(struct thread **thread)
  67 {
  68         thread__put(*thread);
  69         *thread = NULL;
  70 }
  71
  72 #define thread__zput(thread) __thread__zput(&thread)
  73
  74 static inline void thread__exited(struct thread *thread)
  75 {
  76         thread->dead = true;
  77 }
  78
  79 struct namespaces *thread__namespaces(const struct thread *thread);
  80 int thread__set_namespaces(struct thread *thread, u64 timestamp,
  81                            struct namespaces_event *event);
  82
  83 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
  84                        bool exec);
  85 static inline int thread__set_comm(struct thread *thread, const char *comm,
  86                                    u64 timestamp)
  87 {
  88         return __thread__set_comm(thread, comm, timestamp, false);
  89 }
  90
  91 int thread__set_comm_from_proc(struct thread *thread);
  92
  93 int thread__comm_len(struct thread *thread);
  94 struct comm *thread__comm(const struct thread *thread);
  95 struct comm *thread__exec_comm(const struct thread *thread);
  96 const char *thread__comm_str(const struct thread *thread);
  97 int thread__insert_map(struct thread *thread, struct map *map);
  98 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone);
  99 size_t thread__fprintf(struct thread *thread, FILE *fp);
 100
 101 struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
 102
 103 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
 104                              struct addr_location *al);
 105 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
 106                                 struct addr_location *al);
 107
 108 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
 109                                    u64 addr, struct addr_location *al);
 110 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
 111                                       u64 addr, struct addr_location *al);
 112
 113 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
 114                                         struct addr_location *al);
 115
 116 int thread__memcpy(struct thread *thread, struct machine *machine,
 117                    void *buf, u64 ip, int len, bool *is64bit);
 118
 119 static inline void *thread__priv(struct thread *thread)
 120 {
 121         return thread->priv;
 122 }
 123
 124 static inline void thread__set_priv(struct thread *thread, void *p)
 125 {
 126         thread->priv = p;
 127 }
 128
 129 static inline bool thread__is_filtered(struct thread *thread)
 130 {
 131         if (symbol_conf.comm_list &&
 132             !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) {
 133                 return true;
 134         }
 135
 136         if (symbol_conf.pid_list &&
 137             !intlist__has_entry(symbol_conf.pid_list, thread->pid_)) {
 138                 return true;
 139         }
 140
 141         if (symbol_conf.tid_list &&
 142             !intlist__has_entry(symbol_conf.tid_list, thread->tid)) {
 143                 return true;
 144         }
 145
 146         return false;
 147 }
 148
 149 #endif  /* __PERF_THREAD_H */