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openntpd-openbsd
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Use dprintf instead of snprintf/write

OPENBSD_6_3
otto 6 years ago
parent
f8314720c5
commit
09620f7263
1 changed files with 36 additions and 82 deletions
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  1. +36
    -82
      src/lib/libc/stdlib/malloc.c

+ 36
- 82
src/lib/libc/stdlib/malloc.c View File

@ -1,4 +1,4 @@
/* $OpenBSD: malloc.c,v 1.232 2017/09/23 15:13:12 otto Exp $ */
/* $OpenBSD: malloc.c,v 1.233 2017/10/05 04:41:43 otto Exp $ */
/*
* Copyright (c) 2008, 2010, 2011, 2016 Otto Moerbeek <otto@drijf.net>
* Copyright (c) 2012 Matthew Dempsky <matthew@openbsd.org>
@ -273,24 +273,15 @@ struct dir_info *getpool(void)
static __dead void
wrterror(struct dir_info *d, char *msg, ...)
{
struct iovec iov[3];
char pidbuf[80];
char buf[80];
int saved_errno = errno;
va_list ap;
iov[0].iov_base = pidbuf;
snprintf(pidbuf, sizeof(pidbuf), "%s(%d) in %s(): ", __progname,
dprintf(STDERR_FILENO, "%s(%d) in %s(): ", __progname,
getpid(), (d != NULL && d->func) ? d->func : "unknown");
iov[0].iov_len = strlen(pidbuf);
iov[1].iov_base = buf;
va_start(ap, msg);
vsnprintf(buf, sizeof(buf), msg, ap);
vdprintf(STDERR_FILENO, msg, ap);
va_end(ap);
iov[1].iov_len = strlen(buf);
iov[2].iov_base = "\n";
iov[2].iov_len = 1;
writev(STDERR_FILENO, iov, 3);
dprintf(STDERR_FILENO, "\n");
#ifdef MALLOC_STATS
if (mopts.malloc_stats)
@ -560,9 +551,8 @@ omalloc_parseopt(char opt)
mopts.malloc_xmalloc = 1;
break;
default: {
static const char q[] = "malloc() warning: "
"unknown char in MALLOC_OPTIONS\n";
write(STDERR_FILENO, q, sizeof(q) - 1);
dprintf(STDERR_FILENO, "malloc() warning: "
"unknown char in MALLOC_OPTIONS\n");
break;
}
}
@ -623,9 +613,8 @@ omalloc_init(void)
#ifdef MALLOC_STATS
if (mopts.malloc_stats && (atexit(malloc_exit) == -1)) {
static const char q[] = "malloc() warning: atexit(2) failed."
" Will not be able to dump stats on exit\n";
write(STDERR_FILENO, q, sizeof(q) - 1);
dprintf(STDERR_FILENO, "malloc() warning: atexit(2) failed."
" Will not be able to dump stats on exit\n");
}
#endif /* MALLOC_STATS */
@ -2134,30 +2123,22 @@ putleakinfo(void *f, size_t sz, int cnt)
static struct malloc_leak *malloc_leaks;
static void
writestr(int fd, const char *p)
{
write(fd, p, strlen(p));
}
static void
dump_leaks(int fd)
{
struct leaknode *p;
char buf[64];
int i = 0;
writestr(fd, "Leak report\n");
writestr(fd, " f sum # avg\n");
dprintf(fd, "Leak report\n");
dprintf(fd, " f sum # avg\n");
/* XXX only one page of summary */
if (malloc_leaks == NULL)
malloc_leaks = MMAP(MALLOC_PAGESIZE);
if (malloc_leaks != MAP_FAILED)
memset(malloc_leaks, 0, MALLOC_PAGESIZE);
RBT_FOREACH(p, leaktree, &leakhead) {
snprintf(buf, sizeof(buf), "%18p %7zu %6u %6zu\n", p->d.f,
dprintf(fd, "%18p %7zu %6u %6zu\n", p->d.f,
p->d.total_size, p->d.count, p->d.total_size / p->d.count);
write(fd, buf, strlen(buf));
if (malloc_leaks == MAP_FAILED ||
i >= MALLOC_PAGESIZE / sizeof(struct malloc_leak))
continue;
@ -2171,13 +2152,10 @@ dump_leaks(int fd)
static void
dump_chunk(int fd, struct chunk_info *p, void *f, int fromfreelist)
{
char buf[64];
while (p != NULL) {
snprintf(buf, sizeof(buf), "chunk %18p %18p %4d %d/%d\n",
dprintf(fd, "chunk %18p %18p %4d %d/%d\n",
p->page, ((p->bits[0] & 1) ? NULL : f),
p->size, p->free, p->total);
write(fd, buf, strlen(buf));
if (!fromfreelist) {
if (p->bits[0] & 1)
putleakinfo(NULL, p->size, p->total - p->free);
@ -2190,18 +2168,17 @@ dump_chunk(int fd, struct chunk_info *p, void *f, int fromfreelist)
}
p = LIST_NEXT(p, entries);
if (p != NULL)
writestr(fd, " ");
dprintf(fd, " ");
}
}
static void
dump_free_chunk_info(int fd, struct dir_info *d)
{
char buf[64];
int i, j, count;
struct chunk_info *p;
writestr(fd, "Free chunk structs:\n");
dprintf(fd, "Free chunk structs:\n");
for (i = 0; i <= MALLOC_MAXSHIFT; i++) {
count = 0;
LIST_FOREACH(p, &d->chunk_info_list[i], entries)
@ -2210,12 +2187,11 @@ dump_free_chunk_info(int fd, struct dir_info *d)
p = LIST_FIRST(&d->chunk_dir[i][j]);
if (p == NULL && count == 0)
continue;
snprintf(buf, sizeof(buf), "%2d) %3d ", i, count);
write(fd, buf, strlen(buf));
dprintf(fd, "%2d) %3d ", i, count);
if (p != NULL)
dump_chunk(fd, p, NULL, 1);
else
write(fd, "\n", 1);
dprintf(fd, "\n");
}
}
@ -2224,19 +2200,14 @@ dump_free_chunk_info(int fd, struct dir_info *d)
static void
dump_free_page_info(int fd, struct dir_info *d)
{
char buf[64];
int i;
snprintf(buf, sizeof(buf), "Free pages cached: %zu\n",
d->free_regions_size);
write(fd, buf, strlen(buf));
dprintf(fd, "Free pages cached: %zu\n", d->free_regions_size);
for (i = 0; i < mopts.malloc_cache; i++) {
if (d->free_regions[i].p != NULL) {
snprintf(buf, sizeof(buf), "%2d) ", i);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "free at %p: %zu\n",
dprintf(fd, "%2d) ", i);
dprintf(fd, "free at %p: %zu\n",
d->free_regions[i].p, d->free_regions[i].size);
write(fd, buf, strlen(buf));
}
}
}
@ -2244,50 +2215,39 @@ dump_free_page_info(int fd, struct dir_info *d)
static void
malloc_dump1(int fd, int poolno, struct dir_info *d)
{
char buf[100];
size_t i, realsize;
snprintf(buf, sizeof(buf), "Malloc dir of %s pool %d at %p\n", __progname, poolno, d);
write(fd, buf, strlen(buf));
dprintf(fd, "Malloc dir of %s pool %d at %p\n", __progname, poolno, d);
if (d == NULL)
return;
snprintf(buf, sizeof(buf), "Region slots free %zu/%zu\n",
dprintf(fd, "Region slots free %zu/%zu\n",
d->regions_free, d->regions_total);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Finds %zu/%zu\n", d->finds,
dprintf(fd, "Finds %zu/%zu\n", d->finds,
d->find_collisions);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Inserts %zu/%zu\n", d->inserts,
dprintf(fd, "Inserts %zu/%zu\n", d->inserts,
d->insert_collisions);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Deletes %zu/%zu\n", d->deletes,
dprintf(fd, "Deletes %zu/%zu\n", d->deletes,
d->delete_moves);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Cheap reallocs %zu/%zu\n",
dprintf(fd, "Cheap reallocs %zu/%zu\n",
d->cheap_reallocs, d->cheap_realloc_tries);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "In use %zu\n", d->malloc_used);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Guarded %zu\n", d->malloc_guarded);
write(fd, buf, strlen(buf));
dprintf(fd, "In use %zu\n", d->malloc_used);
dprintf(fd, "Guarded %zu\n", d->malloc_guarded);
dump_free_chunk_info(fd, d);
dump_free_page_info(fd, d);
writestr(fd,
dprintf(fd,
"slot) hash d type page f size [free/n]\n");
for (i = 0; i < d->regions_total; i++) {
if (d->r[i].p != NULL) {
size_t h = hash(d->r[i].p) &
(d->regions_total - 1);
snprintf(buf, sizeof(buf), "%4zx) #%4zx %zd ",
dprintf(fd, "%4zx) #%4zx %zd ",
i, h, h - i);
write(fd, buf, strlen(buf));
REALSIZE(realsize, &d->r[i]);
if (realsize > MALLOC_MAXCHUNK) {
putleakinfo(d->r[i].f, realsize, 1);
snprintf(buf, sizeof(buf),
dprintf(fd,
"pages %18p %18p %zu\n", d->r[i].p,
d->r[i].f, realsize);
write(fd, buf, strlen(buf));
} else
dump_chunk(fd,
(struct chunk_info *)d->r[i].size,
@ -2295,7 +2255,7 @@ malloc_dump1(int fd, int poolno, struct dir_info *d)
}
}
dump_leaks(fd);
write(fd, "\n", 1);
dprintf(fd, "\n");
}
void
@ -2341,16 +2301,12 @@ DEF_WEAK(malloc_gdump);
static void
malloc_exit(void)
{
static const char q[] = "malloc() warning: Couldn't dump stats\n";
int save_errno = errno, fd, i;
char buf[100];
fd = open("malloc.out", O_RDWR|O_APPEND);
if (fd != -1) {
snprintf(buf, sizeof(buf), "******** Start dump %s *******\n",
__progname);
write(fd, buf, strlen(buf));
snprintf(buf, sizeof(buf),
dprintf(fd, "******** Start dump %s *******\n", __progname);
dprintf(fd,
"MT=%d I=%d F=%d U=%d J=%d R=%d X=%d C=%d cache=%u G=%zu\n",
mopts.malloc_mt, mopts.internal_funcs,
mopts.malloc_freecheck,
@ -2358,16 +2314,14 @@ malloc_exit(void)
mopts.malloc_realloc, mopts.malloc_xmalloc,
mopts.chunk_canaries, mopts.malloc_cache,
mopts.malloc_guard);
write(fd, buf, strlen(buf));
for (i = 0; i < _MALLOC_MUTEXES; i++)
malloc_dump(fd, i, mopts.malloc_pool[i]);
snprintf(buf, sizeof(buf), "******** End dump %s *******\n",
__progname);
write(fd, buf, strlen(buf));
dprintf(fd, "******** End dump %s *******\n", __progname);
close(fd);
} else
write(STDERR_FILENO, q, sizeof(q) - 1);
dprintf(STDERR_FILENO,
"malloc() warning: Couldn't dump stats\n");
errno = save_errno;
}


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