1 #include "../perf.h" 2 #include <stdlib.h> 3 #include <stdio.h> 4 #include <string.h> 5 #include "session.h" 6 #include "thread.h" 7 #include "util.h" 8 #include "debug.h" 9 #include "comm.h" 10 11 struct thread *thread__new(pid_t pid, pid_t tid) 12 { 13 char *comm_str; 14 struct comm *comm; 15 struct thread *thread = zalloc(sizeof(*thread)); 16 17 if (thread != NULL) { 18 map_groups__init(&thread->mg); 19 thread->pid_ = pid; 20 thread->tid = tid; 21 thread->ppid = -1; 22 INIT_LIST_HEAD(&thread->comm_list); 23 24 comm_str = malloc(32); 25 if (!comm_str) 26 goto err_thread; 27 28 snprintf(comm_str, 32, ":%d", tid); 29 comm = comm__new(comm_str, 0); 30 free(comm_str); 31 if (!comm) 32 goto err_thread; 33 34 list_add(&comm->list, &thread->comm_list); 35 } 36 37 return thread; 38 39 err_thread: 40 free(thread); 41 return NULL; 42 } 43 44 void thread__delete(struct thread *thread) 45 { 46 struct comm *comm, *tmp; 47 48 map_groups__exit(&thread->mg); 49 list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) { 50 list_del(&comm->list); 51 comm__free(comm); 52 } 53 54 free(thread); 55 } 56 57 struct comm *thread__comm(const struct thread *thread) 58 { 59 if (list_empty(&thread->comm_list)) 60 return NULL; 61 62 return list_first_entry(&thread->comm_list, struct comm, list); 63 } 64 65 /* CHECKME: time should always be 0 if event aren't ordered */ 66 int thread__set_comm(struct thread *thread, const char *str, u64 timestamp) 67 { 68 struct comm *new, *curr = thread__comm(thread); 69 70 /* Override latest entry if it had no specific time coverage */ 71 if (!curr->start) { 72 comm__override(curr, str, timestamp); 73 } else { 74 new = comm__new(str, timestamp); 75 if (!new) 76 return -ENOMEM; 77 list_add(&new->list, &thread->comm_list); 78 } 79 80 thread->comm_set = true; 81 82 return 0; 83 } 84 85 const char *thread__comm_str(const struct thread *thread) 86 { 87 const struct comm *comm = thread__comm(thread); 88 89 if (!comm) 90 return NULL; 91 92 return comm__str(comm); 93 } 94 95 /* CHECKME: it should probably better return the max comm len from its comm list */ 96 int thread__comm_len(struct thread *thread) 97 { 98 if (!thread->comm_len) { 99 const char *comm = thread__comm_str(thread); 100 if (!comm) 101 return 0; 102 thread->comm_len = strlen(comm); 103 } 104 105 return thread->comm_len; 106 } 107 108 size_t thread__fprintf(struct thread *thread, FILE *fp) 109 { 110 return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) + 111 map_groups__fprintf(&thread->mg, verbose, fp); 112 } 113 114 void thread__insert_map(struct thread *thread, struct map *map) 115 { 116 map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr); 117 map_groups__insert(&thread->mg, map); 118 } 119 120 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp) 121 { 122 int i, err; 123 124 if (parent->comm_set) { 125 const char *comm = thread__comm_str(parent); 126 if (!comm) 127 return -ENOMEM; 128 err = thread__set_comm(thread, comm, timestamp); 129 if (!err) 130 return err; 131 thread->comm_set = true; 132 } 133 134 for (i = 0; i < MAP__NR_TYPES; ++i) 135 if (map_groups__clone(&thread->mg, &parent->mg, i) < 0) 136 return -ENOMEM; 137 138 thread->ppid = parent->tid; 139 140 return 0; 141 } 142