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 <unistd.h>
   9 #include <sys/types.h>
  10 #include "symbol.h"
  11 #include <strlist.h>
  12 #include <intlist.h>
  13 #include "rwsem.h"
  14
  15 struct thread_stack;
  16 struct unwind_libunwind_ops;
  17
  18 struct thread {
  19         union {
  20                 struct rb_node   rb_node;
  21                 struct list_head node;
  22         };
  23         struct map_groups       *mg;
  24         pid_t                   pid_; /* Not all tools update this */
  25         pid_t                   tid;
  26         pid_t                   ppid;
  27         int                     cpu;
  28         refcount_t              refcnt;
  29         bool                    comm_set;
  30         int                     comm_len;
  31         bool                    dead; /* if set thread has exited */
  32         struct list_head        namespaces_list;
  33         struct rw_semaphore     namespaces_lock;
  34         struct list_head        comm_list;
  35         struct rw_semaphore     comm_lock;
  36         u64                     db_id;
  37
  38         void                    *priv;
  39         struct thread_stack     *ts;
  40         struct nsinfo           *nsinfo;
  41 #ifdef HAVE_LIBUNWIND_SUPPORT
  42         void                            *addr_space;
  43         struct unwind_libunwind_ops     *unwind_libunwind_ops;
  44 #endif
  45 };
  46
  47 struct machine;
  48 struct namespaces;
  49 struct comm;
  50
  51 struct thread *thread__new(pid_t pid, pid_t tid);
  52 int thread__init_map_groups(struct thread *thread, struct machine *machine);
  53 void thread__delete(struct thread *thread);
  54
  55 struct thread *thread__get(struct thread *thread);
  56 void thread__put(struct thread *thread);
  57
  58 static inline void __thread__zput(struct thread **thread)
  59 {
  60         thread__put(*thread);
  61         *thread = NULL;
  62 }
  63
  64 #define thread__zput(thread) __thread__zput(&thread)
  65
  66 static inline void thread__exited(struct thread *thread)
  67 {
  68         thread->dead = true;
  69 }
  70
  71 struct namespaces *thread__namespaces(const struct thread *thread);
  72 int thread__set_namespaces(struct thread *thread, u64 timestamp,
  73                            struct namespaces_event *event);
  74
  75 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
  76                        bool exec);
  77 static inline int thread__set_comm(struct thread *thread, const char *comm,
  78                                    u64 timestamp)
  79 {
  80         return __thread__set_comm(thread, comm, timestamp, false);
  81 }
  82
  83 int thread__set_comm_from_proc(struct thread *thread);
  84
  85 int thread__comm_len(struct thread *thread);
  86 struct comm *thread__comm(const struct thread *thread);
  87 struct comm *thread__exec_comm(const struct thread *thread);
  88 const char *thread__comm_str(const struct thread *thread);
  89 int thread__insert_map(struct thread *thread, struct map *map);
  90 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp);
  91 size_t thread__fprintf(struct thread *thread, FILE *fp);
  92
  93 struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
  94
  95 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
  96                              struct addr_location *al);
  97
  98 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
  99                                    u64 addr, struct addr_location *al);
 100
 101 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
 102                                         struct addr_location *al);
 103
 104 static inline void *thread__priv(struct thread *thread)
 105 {
 106         return thread->priv;
 107 }
 108
 109 static inline void thread__set_priv(struct thread *thread, void *p)
 110 {
 111         thread->priv = p;
 112 }
 113
 114 static inline bool thread__is_filtered(struct thread *thread)
 115 {
 116         if (symbol_conf.comm_list &&
 117             !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) {
 118                 return true;
 119         }
 120
 121         if (symbol_conf.pid_list &&
 122             !intlist__has_entry(symbol_conf.pid_list, thread->pid_)) {
 123                 return true;
 124         }
 125
 126         if (symbol_conf.tid_list &&
 127             !intlist__has_entry(symbol_conf.tid_list, thread->tid)) {
 128                 return true;
 129         }
 130
 131         return false;
 132 }
 133
 134 #endif  /* __PERF_THREAD_H */