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Prefer /proc/<pid>/task/<pid>/maps over /proc/<pid>/maps on Linux.

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This resolves #227.
This commit is contained in:
Jason Evans 2015-05-01 09:03:20 -07:00
parent f1f2b45429
commit 8e33c21d2d
1 changed files with 24 additions and 5 deletions
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29
src/prof.c
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@ -1338,21 +1338,40 @@ label_return:
return (ret);
}
JEMALLOC_ATTR(format(printf, 1, 2))
static int
prof_open_maps(const char *format, ...)
{
int mfd;
va_list ap;
char filename[PATH_MAX + 1];
va_start(ap, format);
malloc_vsnprintf(filename, sizeof(filename), format, ap);
va_end(ap);
mfd = open(filename, O_RDONLY);
return (mfd);
}
static bool
prof_dump_maps(bool propagate_err)
{
bool ret;
int mfd;
char filename[PATH_MAX + 1];
cassert(config_prof);
#ifdef __FreeBSD__
malloc_snprintf(filename, sizeof(filename), "/proc/curproc/map");
mfd = prof_open_maps("/proc/curproc/map");
#else
malloc_snprintf(filename, sizeof(filename), "/proc/%d/maps",
(int)getpid());
{
int pid = getpid();
mfd = prof_open_maps("/proc/%d/task/%d/maps", pid, pid);
if (mfd == -1)
mfd = prof_open_maps("/proc/%d/maps", pid);
}
#endif
mfd = open(filename, O_RDONLY);
if (mfd != -1) {
ssize_t nread;