98 lines
1.7 KiB
C
98 lines
1.7 KiB
C
#include "event.h"
|
|
#include "symbol.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
static inline int is_anon_memory(const char *filename)
|
|
{
|
|
return strcmp(filename, "//anon") == 0;
|
|
}
|
|
|
|
static int strcommon(const char *pathname, char *cwd, int cwdlen)
|
|
{
|
|
int n = 0;
|
|
|
|
while (n < cwdlen && pathname[n] == cwd[n])
|
|
++n;
|
|
|
|
return n;
|
|
}
|
|
|
|
struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
|
|
{
|
|
struct map *self = malloc(sizeof(*self));
|
|
|
|
if (self != NULL) {
|
|
const char *filename = event->filename;
|
|
char newfilename[PATH_MAX];
|
|
int anon;
|
|
|
|
if (cwd) {
|
|
int n = strcommon(filename, cwd, cwdlen);
|
|
|
|
if (n == cwdlen) {
|
|
snprintf(newfilename, sizeof(newfilename),
|
|
".%s", filename + n);
|
|
filename = newfilename;
|
|
}
|
|
}
|
|
|
|
anon = is_anon_memory(filename);
|
|
|
|
if (anon) {
|
|
snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid);
|
|
filename = newfilename;
|
|
}
|
|
|
|
self->start = event->start;
|
|
self->end = event->start + event->len;
|
|
self->pgoff = event->pgoff;
|
|
|
|
self->dso = dsos__findnew(filename);
|
|
if (self->dso == NULL)
|
|
goto out_delete;
|
|
|
|
if (self->dso == vdso || anon)
|
|
self->map_ip = vdso__map_ip;
|
|
else
|
|
self->map_ip = map__map_ip;
|
|
}
|
|
return self;
|
|
out_delete:
|
|
free(self);
|
|
return NULL;
|
|
}
|
|
|
|
struct map *map__clone(struct map *self)
|
|
{
|
|
struct map *map = malloc(sizeof(*self));
|
|
|
|
if (!map)
|
|
return NULL;
|
|
|
|
memcpy(map, self, sizeof(*self));
|
|
|
|
return map;
|
|
}
|
|
|
|
int map__overlap(struct map *l, struct map *r)
|
|
{
|
|
if (l->start > r->start) {
|
|
struct map *t = l;
|
|
l = r;
|
|
r = t;
|
|
}
|
|
|
|
if (l->end > r->start)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
size_t map__fprintf(struct map *self, FILE *fp)
|
|
{
|
|
return fprintf(fp, " %Lx-%Lx %Lx %s\n",
|
|
self->start, self->end, self->pgoff, self->dso->name);
|
|
}
|