Commit | Line | Data |
---|---|---|
66e274f3 FW |
1 | #include "event.h" |
2 | #include "symbol.h" | |
3 | #include <stdlib.h> | |
4 | #include <string.h> | |
5 | #include <stdio.h> | |
e4204992 | 6 | #include "debug.h" |
66e274f3 FW |
7 | |
8 | static inline int is_anon_memory(const char *filename) | |
9 | { | |
10 | return strcmp(filename, "//anon") == 0; | |
11 | } | |
12 | ||
13 | static int strcommon(const char *pathname, char *cwd, int cwdlen) | |
14 | { | |
15 | int n = 0; | |
16 | ||
17 | while (n < cwdlen && pathname[n] == cwd[n]) | |
18 | ++n; | |
19 | ||
20 | return n; | |
21 | } | |
22 | ||
3610583c ACM |
23 | void map__init(struct map *self, enum map_type type, |
24 | u64 start, u64 end, u64 pgoff, struct dso *dso) | |
afb7b4f0 | 25 | { |
3610583c | 26 | self->type = type; |
afb7b4f0 ACM |
27 | self->start = start; |
28 | self->end = end; | |
29 | self->pgoff = pgoff; | |
30 | self->dso = dso; | |
31 | self->map_ip = map__map_ip; | |
32 | self->unmap_ip = map__unmap_ip; | |
33 | RB_CLEAR_NODE(&self->rb_node); | |
34 | } | |
35 | ||
3610583c ACM |
36 | struct map *map__new(struct mmap_event *event, enum map_type type, |
37 | char *cwd, int cwdlen) | |
66e274f3 FW |
38 | { |
39 | struct map *self = malloc(sizeof(*self)); | |
40 | ||
41 | if (self != NULL) { | |
42 | const char *filename = event->filename; | |
43 | char newfilename[PATH_MAX]; | |
afb7b4f0 | 44 | struct dso *dso; |
66e274f3 FW |
45 | int anon; |
46 | ||
47 | if (cwd) { | |
48 | int n = strcommon(filename, cwd, cwdlen); | |
49 | ||
50 | if (n == cwdlen) { | |
51 | snprintf(newfilename, sizeof(newfilename), | |
52 | ".%s", filename + n); | |
53 | filename = newfilename; | |
54 | } | |
55 | } | |
56 | ||
57 | anon = is_anon_memory(filename); | |
58 | ||
59 | if (anon) { | |
60 | snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid); | |
61 | filename = newfilename; | |
62 | } | |
63 | ||
00a192b3 | 64 | dso = dsos__findnew(filename); |
afb7b4f0 | 65 | if (dso == NULL) |
66e274f3 FW |
66 | goto out_delete; |
67 | ||
3610583c | 68 | map__init(self, type, event->start, event->start + event->len, |
afb7b4f0 ACM |
69 | event->pgoff, dso); |
70 | ||
66e274f3 | 71 | if (self->dso == vdso || anon) |
ed52ce2e | 72 | self->map_ip = self->unmap_ip = identity__map_ip; |
66e274f3 FW |
73 | } |
74 | return self; | |
75 | out_delete: | |
76 | free(self); | |
77 | return NULL; | |
78 | } | |
79 | ||
c338aee8 ACM |
80 | void map__delete(struct map *self) |
81 | { | |
82 | free(self); | |
83 | } | |
84 | ||
6a4694a4 | 85 | void map__fixup_start(struct map *self) |
c338aee8 | 86 | { |
6a4694a4 | 87 | struct rb_root *symbols = &self->dso->symbols[self->type]; |
fcf1203a | 88 | struct rb_node *nd = rb_first(symbols); |
c338aee8 ACM |
89 | if (nd != NULL) { |
90 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
91 | self->start = sym->start; | |
92 | } | |
93 | } | |
94 | ||
6a4694a4 | 95 | void map__fixup_end(struct map *self) |
c338aee8 | 96 | { |
6a4694a4 | 97 | struct rb_root *symbols = &self->dso->symbols[self->type]; |
fcf1203a | 98 | struct rb_node *nd = rb_last(symbols); |
c338aee8 ACM |
99 | if (nd != NULL) { |
100 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
101 | self->end = sym->end; | |
102 | } | |
103 | } | |
104 | ||
d70a5402 ACM |
105 | #define DSO__DELETED "(deleted)" |
106 | ||
a128168d MH |
107 | int map__load(struct map *self, struct perf_session *session, |
108 | symbol_filter_t filter) | |
66bd8424 | 109 | { |
79406cd7 | 110 | const char *name = self->dso->long_name; |
a128168d | 111 | int nr; |
79406cd7 | 112 | |
a128168d MH |
113 | if (dso__loaded(self->dso, self->type)) |
114 | return 0; | |
115 | ||
116 | nr = dso__load(self->dso, self, session, filter); | |
79406cd7 ACM |
117 | if (nr < 0) { |
118 | if (self->dso->has_build_id) { | |
119 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
120 | ||
121 | build_id__sprintf(self->dso->build_id, | |
122 | sizeof(self->dso->build_id), | |
123 | sbuild_id); | |
124 | pr_warning("%s with build id %s not found", | |
125 | name, sbuild_id); | |
126 | } else | |
127 | pr_warning("Failed to open %s", name); | |
128 | ||
129 | pr_warning(", continuing without symbols\n"); | |
130 | return -1; | |
131 | } else if (nr == 0) { | |
132 | const size_t len = strlen(name); | |
133 | const size_t real_len = len - sizeof(DSO__DELETED); | |
134 | ||
135 | if (len > sizeof(DSO__DELETED) && | |
136 | strcmp(name + real_len + 1, DSO__DELETED) == 0) { | |
137 | pr_warning("%.*s was updated, restart the long " | |
138 | "running apps that use it!\n", | |
139 | (int)real_len, name); | |
140 | } else { | |
141 | pr_warning("no symbols found in %s, maybe install " | |
142 | "a debug package?\n", name); | |
66bd8424 | 143 | } |
79406cd7 ACM |
144 | |
145 | return -1; | |
66bd8424 ACM |
146 | } |
147 | ||
79406cd7 ACM |
148 | return 0; |
149 | } | |
150 | ||
4aa65636 ACM |
151 | struct symbol *map__find_symbol(struct map *self, struct perf_session *session, |
152 | u64 addr, symbol_filter_t filter) | |
79406cd7 | 153 | { |
a128168d | 154 | if (map__load(self, session, filter) < 0) |
79406cd7 ACM |
155 | return NULL; |
156 | ||
ea08d8cb | 157 | return dso__find_symbol(self->dso, self->type, addr); |
66bd8424 ACM |
158 | } |
159 | ||
79406cd7 | 160 | struct symbol *map__find_symbol_by_name(struct map *self, const char *name, |
4aa65636 | 161 | struct perf_session *session, |
79406cd7 ACM |
162 | symbol_filter_t filter) |
163 | { | |
a128168d | 164 | if (map__load(self, session, filter) < 0) |
79406cd7 ACM |
165 | return NULL; |
166 | ||
167 | if (!dso__sorted_by_name(self->dso, self->type)) | |
168 | dso__sort_by_name(self->dso, self->type); | |
169 | ||
170 | return dso__find_symbol_by_name(self->dso, self->type, name); | |
171 | } | |
172 | ||
66e274f3 FW |
173 | struct map *map__clone(struct map *self) |
174 | { | |
175 | struct map *map = malloc(sizeof(*self)); | |
176 | ||
177 | if (!map) | |
178 | return NULL; | |
179 | ||
180 | memcpy(map, self, sizeof(*self)); | |
181 | ||
182 | return map; | |
183 | } | |
184 | ||
185 | int map__overlap(struct map *l, struct map *r) | |
186 | { | |
187 | if (l->start > r->start) { | |
188 | struct map *t = l; | |
189 | l = r; | |
190 | r = t; | |
191 | } | |
192 | ||
193 | if (l->end > r->start) | |
194 | return 1; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | size_t map__fprintf(struct map *self, FILE *fp) | |
200 | { | |
201 | return fprintf(fp, " %Lx-%Lx %Lx %s\n", | |
202 | self->start, self->end, self->pgoff, self->dso->name); | |
203 | } |