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         char                    shortname[3];
  30         bool                    comm_set;
  31         int                     comm_len;
  32         bool                    dead; /* if set thread has exited */
  33         struct list_head        namespaces_list;
  34         struct rw_semaphore     namespaces_lock;
  35         struct list_head        comm_list;
  36         struct rw_semaphore     comm_lock;
  37         u64                     db_id;
  38
  39         void                    *priv;
  40         struct thread_stack     *ts;
  41         struct nsinfo           *nsinfo;
  42 #ifdef HAVE_LIBUNWIND_SUPPORT
  43         void                            *addr_space;
  44         struct unwind_libunwind_ops     *unwind_libunwind_ops;
  45 #endif
  46 };
  47
  48 struct machine;
  49 struct namespaces;
  50 struct comm;
  51
  52 struct thread *thread__new(pid_t pid, pid_t tid);
  53 int thread__init_map_groups(struct thread *thread, struct machine *machine);
  54 void thread__delete(struct thread *thread);
  55
  56 struct thread *thread__get(struct thread *thread);
  57 void thread__put(struct thread *thread);
  58
  59 static inline void __thread__zput(struct thread **thread)
  60 {
  61         thread__put(*thread);
  62         *thread = NULL;
  63 }
  64
  65 #define thread__zput(thread) __thread__zput(&thread)
  66
  67 static inline void thread__exited(struct thread *thread)
  68 {
  69         thread->dead = true;
  70 }
  71
  72 struct namespaces *thread__namespaces(const struct thread *thread);
  73 int thread__set_namespaces(struct thread *thread, u64 timestamp,
  74                            struct namespaces_event *event);
  75
  76 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
  77                        bool exec);
  78 static inline int thread__set_comm(struct thread *thread, const char *comm,
  79                                    u64 timestamp)
  80 {
  81         return __thread__set_comm(thread, comm, timestamp, false);
  82 }
  83
  84 int thread__set_comm_from_proc(struct thread *thread);
  85
  86 int thread__comm_len(struct thread *thread);
  87 struct comm *thread__comm(const struct thread *thread);
  88 struct comm *thread__exec_comm(const struct thread *thread);
  89 const char *thread__comm_str(const struct thread *thread);
  90 int thread__insert_map(struct thread *thread, struct map *map);
  91 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp);
  92 size_t thread__fprintf(struct thread *thread, FILE *fp);
  93
  94 struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
  95
  96 void thread__find_addr_map(struct thread *thread,
  97                            u8 cpumode, enum map_type type, u64 addr,
  98                            struct addr_location *al);
  99
 100 void thread__find_addr_location(struct thread *thread,
 101                                 u8 cpumode, enum map_type type, u64 addr,
 102                                 struct addr_location *al);
 103
 104 void thread__find_cpumode_addr_location(struct thread *thread,
 105                                         enum map_type type, u64 addr,
 106                                         struct addr_location *al);
 107
 108 static inline void *thread__priv(struct thread *thread)
 109 {
 110         return thread->priv;
 111 }
 112
 113 static inline void thread__set_priv(struct thread *thread, void *p)
 114 {
 115         thread->priv = p;
 116 }
 117
 118 static inline bool thread__is_filtered(struct thread *thread)
 119 {
 120         if (symbol_conf.comm_list &&
 121             !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) {
 122                 return true;
 123         }
 124
 125         if (symbol_conf.pid_list &&
 126             !intlist__has_entry(symbol_conf.pid_list, thread->pid_)) {
 127                 return true;
 128         }
 129
 130         if (symbol_conf.tid_list &&
 131             !intlist__has_entry(symbol_conf.tid_list, thread->tid)) {
 132                 return true;
 133         }
 134
 135         return false;
 136 }
 137
 138 #endif  /* __PERF_THREAD_H */