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 | ||
afb7b4f0 ACM |
23 | void map__init(struct map *self, u64 start, u64 end, u64 pgoff, |
24 | struct dso *dso) | |
25 | { | |
26 | self->start = start; | |
27 | self->end = end; | |
28 | self->pgoff = pgoff; | |
29 | self->dso = dso; | |
30 | self->map_ip = map__map_ip; | |
31 | self->unmap_ip = map__unmap_ip; | |
32 | RB_CLEAR_NODE(&self->rb_node); | |
33 | } | |
34 | ||
00a192b3 | 35 | struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen) |
66e274f3 FW |
36 | { |
37 | struct map *self = malloc(sizeof(*self)); | |
38 | ||
39 | if (self != NULL) { | |
40 | const char *filename = event->filename; | |
41 | char newfilename[PATH_MAX]; | |
afb7b4f0 | 42 | struct dso *dso; |
66e274f3 FW |
43 | int anon; |
44 | ||
45 | if (cwd) { | |
46 | int n = strcommon(filename, cwd, cwdlen); | |
47 | ||
48 | if (n == cwdlen) { | |
49 | snprintf(newfilename, sizeof(newfilename), | |
50 | ".%s", filename + n); | |
51 | filename = newfilename; | |
52 | } | |
53 | } | |
54 | ||
55 | anon = is_anon_memory(filename); | |
56 | ||
57 | if (anon) { | |
58 | snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid); | |
59 | filename = newfilename; | |
60 | } | |
61 | ||
00a192b3 | 62 | dso = dsos__findnew(filename); |
afb7b4f0 | 63 | if (dso == NULL) |
66e274f3 FW |
64 | goto out_delete; |
65 | ||
afb7b4f0 ACM |
66 | map__init(self, event->start, event->start + event->len, |
67 | event->pgoff, dso); | |
68 | ||
66e274f3 | 69 | if (self->dso == vdso || anon) |
ed52ce2e | 70 | self->map_ip = self->unmap_ip = identity__map_ip; |
66e274f3 FW |
71 | } |
72 | return self; | |
73 | out_delete: | |
74 | free(self); | |
75 | return NULL; | |
76 | } | |
77 | ||
c338aee8 ACM |
78 | void map__delete(struct map *self) |
79 | { | |
80 | free(self); | |
81 | } | |
82 | ||
83 | void map__fixup_start(struct map *self) | |
84 | { | |
85 | struct rb_node *nd = rb_first(&self->dso->syms); | |
86 | if (nd != NULL) { | |
87 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
88 | self->start = sym->start; | |
89 | } | |
90 | } | |
91 | ||
92 | void map__fixup_end(struct map *self) | |
93 | { | |
94 | struct rb_node *nd = rb_last(&self->dso->syms); | |
95 | if (nd != NULL) { | |
96 | struct symbol *sym = rb_entry(nd, struct symbol, rb_node); | |
97 | self->end = sym->end; | |
98 | } | |
99 | } | |
100 | ||
d70a5402 ACM |
101 | #define DSO__DELETED "(deleted)" |
102 | ||
66bd8424 ACM |
103 | struct symbol * |
104 | map__find_symbol(struct map *self, u64 ip, symbol_filter_t filter) | |
105 | { | |
106 | if (!self->dso->loaded) { | |
107 | int nr = dso__load(self->dso, self, filter); | |
108 | ||
109 | if (nr < 0) { | |
8d06367f ACM |
110 | if (self->dso->has_build_id) { |
111 | char sbuild_id[BUILD_ID_SIZE * 2 + 1]; | |
112 | ||
113 | build_id__sprintf(self->dso->build_id, | |
114 | sizeof(self->dso->build_id), | |
115 | sbuild_id); | |
116 | pr_warning("%s with build id %s not found", | |
117 | self->dso->long_name, sbuild_id); | |
118 | } else | |
119 | pr_warning("Failed to open %s", | |
120 | self->dso->long_name); | |
121 | pr_warning(", continuing without symbols\n"); | |
66bd8424 ACM |
122 | return NULL; |
123 | } else if (nr == 0) { | |
d70a5402 ACM |
124 | const char *name = self->dso->long_name; |
125 | const size_t len = strlen(name); | |
126 | const size_t real_len = len - sizeof(DSO__DELETED); | |
127 | ||
128 | if (len > sizeof(DSO__DELETED) && | |
900b20d5 IM |
129 | strcmp(name + real_len + 1, DSO__DELETED) == 0) { |
130 | pr_warning("%.*s was updated, restart the long running apps that use it!\n", | |
131 | (int)real_len, name); | |
132 | } else { | |
133 | pr_warning("no symbols found in %s, maybe install a debug package?\n", name); | |
134 | } | |
66bd8424 ACM |
135 | return NULL; |
136 | } | |
137 | } | |
138 | ||
139 | return self->dso->find_symbol(self->dso, ip); | |
140 | } | |
141 | ||
66e274f3 FW |
142 | struct map *map__clone(struct map *self) |
143 | { | |
144 | struct map *map = malloc(sizeof(*self)); | |
145 | ||
146 | if (!map) | |
147 | return NULL; | |
148 | ||
149 | memcpy(map, self, sizeof(*self)); | |
150 | ||
151 | return map; | |
152 | } | |
153 | ||
154 | int map__overlap(struct map *l, struct map *r) | |
155 | { | |
156 | if (l->start > r->start) { | |
157 | struct map *t = l; | |
158 | l = r; | |
159 | r = t; | |
160 | } | |
161 | ||
162 | if (l->end > r->start) | |
163 | return 1; | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | size_t map__fprintf(struct map *self, FILE *fp) | |
169 | { | |
170 | return fprintf(fp, " %Lx-%Lx %Lx %s\n", | |
171 | self->start, self->end, self->pgoff, self->dso->name); | |
172 | } |