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 return 0; 74 } 75 76 new = comm__new(str, timestamp); 77 if (!new) 78 return -ENOMEM; 79 80 list_add(&new->list, &thread->comm_list); 81 thread->comm_set = true; 82 83 return 0; 84 } 85 86 const char *thread__comm_str(const struct thread *thread) 87 { 88 const struct comm *comm = thread__comm(thread); 89 90 if (!comm) 91 return NULL; 92 93 return comm__str(comm); 94 } 95 96 /* CHECKME: it should probably better return the max comm len from its comm list */ 97 int thread__comm_len(struct thread *thread) 98 { 99 if (!thread->comm_len) { 100 const char *comm = thread__comm_str(thread); 101 if (!comm) 102 return 0; 103 thread->comm_len = strlen(comm); 104 } 105 106 return thread->comm_len; 107 } 108 109 size_t thread__fprintf(struct thread *thread, FILE *fp) 110 { 111 return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) + 112 map_groups__fprintf(&thread->mg, verbose, fp); 113 } 114 115 void thread__insert_map(struct thread *thread, struct map *map) 116 { 117 map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr); 118 map_groups__insert(&thread->mg, map); 119 } 120 121 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp) 122 { 123 int i, err; 124 125 if (parent->comm_set) { 126 const char *comm = thread__comm_str(parent); 127 if (!comm) 128 return -ENOMEM; 129 err = thread__set_comm(thread, comm, timestamp); 130 if (!err) 131 return err; 132 thread->comm_set = true; 133 } 134 135 for (i = 0; i < MAP__NR_TYPES; ++i) 136 if (map_groups__clone(&thread->mg, &parent->mg, i) < 0) 137 return -ENOMEM; 138 139 thread->ppid = parent->tid; 140 141 return 0; 142 } 143