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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/list.h>
7#include <stdio.h>
8#include <unistd.h>
9#include <sys/types.h>
10#include "srccode.h"
11#include "symbol_conf.h"
12#include <strlist.h>
13#include <intlist.h>
14#include "rwsem.h"
15#include "callchain.h"
16#include <internal/rc_check.h>
17
18struct addr_location;
19struct map;
20struct perf_record_namespaces;
21struct thread_stack;
22struct unwind_libunwind_ops;
23
24struct lbr_stitch {
25 struct list_head lists;
26 struct list_head free_lists;
27 struct perf_sample prev_sample;
28 struct callchain_cursor_node *prev_lbr_cursor;
29 unsigned int prev_lbr_cursor_size;
30};
31
32DECLARE_RC_STRUCT(thread) {
33 /** @maps: mmaps associated with this thread. */
34 struct maps *maps;
35 pid_t pid_; /* Not all tools update this */
36 /** @tid: thread ID number unique to a machine. */
37 pid_t tid;
38 /** @ppid: parent process of the process this thread belongs to. */
39 pid_t ppid;
40 int cpu;
41 int guest_cpu; /* For QEMU thread */
42 refcount_t refcnt;
43 /**
44 * @exited: Has the thread had an exit event. Such threads are usually
45 * removed from the machine's threads but some events/tools require
46 * access to dead threads.
47 */
48 bool exited;
49 bool comm_set;
50 int comm_len;
51 struct list_head namespaces_list;
52 struct rw_semaphore namespaces_lock;
53 struct list_head comm_list;
54 struct rw_semaphore comm_lock;
55 u64 db_id;
56
57 void *priv;
58 struct thread_stack *ts;
59 struct nsinfo *nsinfo;
60 struct srccode_state srccode_state;
61 bool filter;
62 int filter_entry_depth;
63 /**
64 * @e_flags: The ELF EF_* associated with the thread. Valid if e_machine != EM_NONE.
65 */
66 uint16_t e_flags;
67 /**
68 * @e_machine: The ELF EM_* associated with the thread. EM_NONE if not
69 * computed.
70 */
71 uint16_t e_machine;
72 /**
73 * @e_is_big_endian: True if the ELF architecture of the thread is big endian.
74 * Valid if e_machine != EM_NONE.
75 */
76 bool e_is_big_endian;
77 /* LBR call stack stitch */
78 bool lbr_stitch_enable;
79 struct lbr_stitch *lbr_stitch;
80};
81
82struct machine;
83struct namespaces;
84struct comm;
85
86struct thread *thread__new(pid_t pid, pid_t tid);
87int thread__init_maps(struct thread *thread, struct machine *machine);
88void thread__delete(struct thread *thread);
89
90void thread__set_priv_destructor(void (*destructor)(void *priv));
91
92struct thread *thread__get(struct thread *thread);
93void thread__put(struct thread *thread);
94
95static inline void __thread__zput(struct thread **thread)
96{
97 thread__put(*thread);
98 *thread = NULL;
99}
100
101#define thread__zput(thread) __thread__zput(&thread)
102
103struct namespaces *thread__namespaces(struct thread *thread);
104int thread__set_namespaces(struct thread *thread, u64 timestamp,
105 struct perf_record_namespaces *event);
106
107int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
108 bool exec);
109static inline int thread__set_comm(struct thread *thread, const char *comm,
110 u64 timestamp)
111{
112 return __thread__set_comm(thread, comm, timestamp, false);
113}
114
115int thread__set_comm_from_proc(struct thread *thread);
116
117int thread__comm_len(struct thread *thread);
118struct comm *thread__comm(struct thread *thread);
119struct comm *thread__exec_comm(struct thread *thread);
120const char *thread__comm_str(struct thread *thread);
121int thread__insert_map(struct thread *thread, struct map *map);
122int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone);
123size_t thread__fprintf(struct thread *thread, FILE *fp);
124
125struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
126
127struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
128 struct addr_location *al);
129struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
130 struct addr_location *al);
131
132struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
133 u64 addr, struct addr_location *al);
134struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
135 u64 addr, struct addr_location *al);
136
137void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
138 bool symbols, struct addr_location *al);
139
140int thread__memcpy(struct thread *thread, struct machine *machine,
141 void *buf, u64 ip, int len, bool *is64bit);
142
143static inline struct maps *thread__maps(struct thread *thread)
144{
145 return RC_CHK_ACCESS(thread)->maps;
146}
147
148static inline void thread__set_maps(struct thread *thread, struct maps *maps)
149{
150 RC_CHK_ACCESS(thread)->maps = maps;
151}
152
153static inline pid_t thread__pid(const struct thread *thread)
154{
155 return RC_CHK_ACCESS(thread)->pid_;
156}
157
158static inline void thread__set_pid(struct thread *thread, pid_t pid_)
159{
160 RC_CHK_ACCESS(thread)->pid_ = pid_;
161}
162
163static inline pid_t thread__tid(const struct thread *thread)
164{
165 return RC_CHK_ACCESS(thread)->tid;
166}
167
168static inline void thread__set_tid(struct thread *thread, pid_t tid)
169{
170 RC_CHK_ACCESS(thread)->tid = tid;
171}
172
173static inline pid_t thread__ppid(const struct thread *thread)
174{
175 return RC_CHK_ACCESS(thread)->ppid;
176}
177
178static inline void thread__set_ppid(struct thread *thread, pid_t ppid)
179{
180 RC_CHK_ACCESS(thread)->ppid = ppid;
181}
182
183static inline int thread__cpu(const struct thread *thread)
184{
185 return RC_CHK_ACCESS(thread)->cpu;
186}
187
188static inline void thread__set_cpu(struct thread *thread, int cpu)
189{
190 RC_CHK_ACCESS(thread)->cpu = cpu;
191}
192
193static inline int thread__guest_cpu(const struct thread *thread)
194{
195 return RC_CHK_ACCESS(thread)->guest_cpu;
196}
197
198static inline void thread__set_guest_cpu(struct thread *thread, int guest_cpu)
199{
200 RC_CHK_ACCESS(thread)->guest_cpu = guest_cpu;
201}
202
203static inline refcount_t *thread__refcnt(struct thread *thread)
204{
205 return &RC_CHK_ACCESS(thread)->refcnt;
206}
207
208static inline void thread__set_exited(struct thread *thread, bool exited)
209{
210 RC_CHK_ACCESS(thread)->exited = exited;
211}
212
213static inline bool thread__comm_set(const struct thread *thread)
214{
215 return RC_CHK_ACCESS(thread)->comm_set;
216}
217
218static inline void thread__set_comm_set(struct thread *thread, bool set)
219{
220 RC_CHK_ACCESS(thread)->comm_set = set;
221}
222
223static inline int thread__var_comm_len(const struct thread *thread)
224{
225 return RC_CHK_ACCESS(thread)->comm_len;
226}
227
228static inline void thread__set_comm_len(struct thread *thread, int len)
229{
230 RC_CHK_ACCESS(thread)->comm_len = len;
231}
232
233static inline struct list_head *thread__namespaces_list(struct thread *thread)
234{
235 return &RC_CHK_ACCESS(thread)->namespaces_list;
236}
237
238static inline int thread__namespaces_list_empty(const struct thread *thread)
239{
240 return list_empty(&RC_CHK_ACCESS(thread)->namespaces_list);
241}
242
243static inline struct rw_semaphore *thread__namespaces_lock(struct thread *thread)
244{
245 return &RC_CHK_ACCESS(thread)->namespaces_lock;
246}
247
248static inline struct rw_semaphore *thread__comm_lock(struct thread *thread)
249{
250 return &RC_CHK_ACCESS(thread)->comm_lock;
251}
252
253static inline struct list_head *thread__comm_list(struct thread *thread)
254 SHARED_LOCKS_REQUIRED(thread__comm_lock(thread))
255{
256 return &RC_CHK_ACCESS(thread)->comm_list;
257}
258
259static inline u64 thread__db_id(const struct thread *thread)
260{
261 return RC_CHK_ACCESS(thread)->db_id;
262}
263
264static inline void thread__set_db_id(struct thread *thread, u64 db_id)
265{
266 RC_CHK_ACCESS(thread)->db_id = db_id;
267}
268
269static inline void *thread__priv(struct thread *thread)
270{
271 return RC_CHK_ACCESS(thread)->priv;
272}
273
274static inline void thread__set_priv(struct thread *thread, void *p)
275{
276 RC_CHK_ACCESS(thread)->priv = p;
277}
278
279static inline struct thread_stack *thread__ts(struct thread *thread)
280{
281 return RC_CHK_ACCESS(thread)->ts;
282}
283
284static inline void thread__set_ts(struct thread *thread, struct thread_stack *ts)
285{
286 RC_CHK_ACCESS(thread)->ts = ts;
287}
288
289static inline struct nsinfo *thread__nsinfo(struct thread *thread)
290{
291 return RC_CHK_ACCESS(thread)->nsinfo;
292}
293
294static inline struct srccode_state *thread__srccode_state(struct thread *thread)
295{
296 return &RC_CHK_ACCESS(thread)->srccode_state;
297}
298
299static inline bool thread__filter(const struct thread *thread)
300{
301 return RC_CHK_ACCESS(thread)->filter;
302}
303
304static inline void thread__set_filter(struct thread *thread, bool filter)
305{
306 RC_CHK_ACCESS(thread)->filter = filter;
307}
308
309static inline int thread__filter_entry_depth(const struct thread *thread)
310{
311 return RC_CHK_ACCESS(thread)->filter_entry_depth;
312}
313
314static inline void thread__set_filter_entry_depth(struct thread *thread, int depth)
315{
316 RC_CHK_ACCESS(thread)->filter_entry_depth = depth;
317}
318
319uint16_t thread__e_machine_endian(struct thread *thread, struct machine *machine, uint32_t *e_flags,
320 bool *is_big_endian);
321static inline uint16_t thread__e_machine(struct thread *thread, struct machine *machine,
322 uint32_t *e_flags)
323{
324 return thread__e_machine_endian(thread, machine, e_flags, NULL);
325}
326
327static inline void thread__set_e_machine(struct thread *thread, uint16_t e_machine)
328{
329 RC_CHK_ACCESS(thread)->e_machine = e_machine;
330}
331
332static inline uint32_t thread__e_flags(const struct thread *thread)
333{
334 return RC_CHK_ACCESS(thread)->e_flags;
335}
336
337static inline void thread__set_e_flags(struct thread *thread, uint32_t e_flags)
338{
339 RC_CHK_ACCESS(thread)->e_flags = e_flags;
340}
341
342static inline bool thread__e_is_big_endian(const struct thread *thread)
343{
344 return RC_CHK_ACCESS(thread)->e_is_big_endian;
345}
346
347static inline void thread__set_e_is_big_endian(struct thread *thread, bool is_big_endian)
348{
349 RC_CHK_ACCESS(thread)->e_is_big_endian = is_big_endian;
350}
351
352
353static inline bool thread__lbr_stitch_enable(const struct thread *thread)
354{
355 return RC_CHK_ACCESS(thread)->lbr_stitch_enable;
356}
357
358static inline void thread__set_lbr_stitch_enable(struct thread *thread, bool en)
359{
360 RC_CHK_ACCESS(thread)->lbr_stitch_enable = en;
361}
362
363static inline struct lbr_stitch *thread__lbr_stitch(struct thread *thread)
364{
365 return RC_CHK_ACCESS(thread)->lbr_stitch;
366}
367
368static inline void thread__set_lbr_stitch(struct thread *thread, struct lbr_stitch *lbrs)
369{
370 RC_CHK_ACCESS(thread)->lbr_stitch = lbrs;
371}
372
373static inline bool thread__is_filtered(struct thread *thread)
374{
375 if (symbol_conf.comm_list &&
376 !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) {
377 return true;
378 }
379
380 if (symbol_conf.pid_list &&
381 !intlist__has_entry(symbol_conf.pid_list, thread__pid(thread))) {
382 return true;
383 }
384
385 if (symbol_conf.tid_list &&
386 !intlist__has_entry(symbol_conf.tid_list, thread__tid(thread))) {
387 return true;
388 }
389
390 return false;
391}
392
393void thread__free_stitch_list(struct thread *thread);
394
395void thread__resolve(struct thread *thread, struct addr_location *al,
396 struct perf_sample *sample);
397
398#endif /* __PERF_THREAD_H */