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-rw-r--r--libc/malloc/mtrace.c185
1 files changed, 90 insertions, 95 deletions
diff --git a/libc/malloc/mtrace.c b/libc/malloc/mtrace.c
index ee941333a..99ebaffb9 100644
--- a/libc/malloc/mtrace.c
+++ b/libc/malloc/mtrace.c
@@ -1,8 +1,8 @@
/* More debugging hooks for `malloc'.
- Copyright (C) 1991-2013 Free Software Foundation, Inc.
+ Copyright (C) 1991-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Written April 2, 1991 by John Gilmore of Cygnus Support.
- Based on mcheck.c by Mike Haertel.
+ Written April 2, 1991 by John Gilmore of Cygnus Support.
+ Based on mcheck.c by Mike Haertel.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -18,11 +18,11 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#ifndef _MALLOC_INTERNAL
-#define _MALLOC_INTERNAL
-#include <malloc.h>
-#include <mcheck.h>
-#include <bits/libc-lock.h>
+#ifndef _MALLOC_INTERNAL
+# define _MALLOC_INTERNAL
+# include <malloc.h>
+# include <mcheck.h>
+# include <bits/libc-lock.h>
#endif
#include <dlfcn.h>
@@ -48,7 +48,7 @@
#define TRACE_BUFFER_SIZE 512
static FILE *mallstream;
-static const char mallenv[]= "MALLOC_TRACE";
+static const char mallenv[] = "MALLOC_TRACE";
static char *malloc_trace_buffer;
__libc_lock_define_initialized (static, lock);
@@ -60,9 +60,9 @@ __ptr_t mallwatch;
static void (*tr_old_free_hook) (__ptr_t ptr, const __ptr_t);
static __ptr_t (*tr_old_malloc_hook) (size_t size, const __ptr_t);
static __ptr_t (*tr_old_realloc_hook) (__ptr_t ptr, size_t size,
- const __ptr_t);
+ const __ptr_t);
static __ptr_t (*tr_old_memalign_hook) (size_t __alignment, size_t __size,
- const __ptr_t);
+ const __ptr_t);
/* This function is called when the block being alloc'd, realloc'd, or
freed has an address matching the variable "mallwatch". In a debugger,
@@ -79,39 +79,38 @@ libc_hidden_def (tr_break)
static void tr_where (const __ptr_t, Dl_info *) __THROW internal_function;
static void
-internal_function
-tr_where (caller, info)
- const __ptr_t caller;
- Dl_info *info;
+internal_function tr_where (caller, info)
+const __ptr_t caller;
+Dl_info *info;
{
if (caller != NULL)
{
if (info != NULL)
- {
- char *buf = (char *) "";
- if (info->dli_sname != NULL)
- {
- size_t len = strlen (info->dli_sname);
- buf = alloca (len + 6 + 2 * sizeof (void *));
-
- buf[0] = '(';
- __stpcpy (_fitoa (caller >= (const __ptr_t) info->dli_saddr
- ? caller - (const __ptr_t) info->dli_saddr
- : (const __ptr_t) info->dli_saddr - caller,
- __stpcpy (__mempcpy (buf + 1, info->dli_sname,
- len),
- caller >= (__ptr_t) info->dli_saddr
- ? "+0x" : "-0x"),
- 16, 0),
- ")");
- }
-
- fprintf (mallstream, "@ %s%s%s[%p] ",
- info->dli_fname ?: "", info->dli_fname ? ":" : "",
- buf, caller);
- }
+ {
+ char *buf = (char *) "";
+ if (info->dli_sname != NULL)
+ {
+ size_t len = strlen (info->dli_sname);
+ buf = alloca (len + 6 + 2 * sizeof (void *));
+
+ buf[0] = '(';
+ __stpcpy (_fitoa (caller >= (const __ptr_t) info->dli_saddr
+ ? caller - (const __ptr_t) info->dli_saddr
+ : (const __ptr_t) info->dli_saddr - caller,
+ __stpcpy (__mempcpy (buf + 1, info->dli_sname,
+ len),
+ caller >= (__ptr_t) info->dli_saddr
+ ? "+0x" : "-0x"),
+ 16, 0),
+ ")");
+ }
+
+ fprintf (mallstream, "@ %s%s%s[%p] ",
+ info->dli_fname ? : "", info->dli_fname ? ":" : "",
+ buf, caller);
+ }
else
- fprintf (mallstream, "@ [%p] ", caller);
+ fprintf (mallstream, "@ [%p] ", caller);
}
}
@@ -131,10 +130,9 @@ lock_and_info (const __ptr_t caller, Dl_info *mem)
static void tr_freehook (__ptr_t, const __ptr_t) __THROW;
-static void
-tr_freehook (ptr, caller)
- __ptr_t ptr;
- const __ptr_t caller;
+static void tr_freehook (ptr, caller)
+__ptr_t ptr;
+const __ptr_t caller;
{
if (ptr == NULL)
return;
@@ -152,7 +150,7 @@ tr_freehook (ptr, caller)
}
__free_hook = tr_old_free_hook;
if (tr_old_free_hook != NULL)
- (*tr_old_free_hook) (ptr, caller);
+ (*tr_old_free_hook)(ptr, caller);
else
free (ptr);
__free_hook = tr_freehook;
@@ -160,10 +158,9 @@ tr_freehook (ptr, caller)
}
static __ptr_t tr_mallochook (size_t, const __ptr_t) __THROW;
-static __ptr_t
-tr_mallochook (size, caller)
- size_t size;
- const __ptr_t caller;
+static __ptr_t tr_mallochook (size, caller)
+size_t size;
+const __ptr_t caller;
{
__ptr_t hdr;
@@ -172,7 +169,7 @@ tr_mallochook (size, caller)
__malloc_hook = tr_old_malloc_hook;
if (tr_old_malloc_hook != NULL)
- hdr = (__ptr_t) (*tr_old_malloc_hook) (size, caller);
+ hdr = (__ptr_t) (*tr_old_malloc_hook)(size, caller);
else
hdr = (__ptr_t) malloc (size);
__malloc_hook = tr_mallochook;
@@ -190,12 +187,11 @@ tr_mallochook (size, caller)
}
static __ptr_t tr_reallochook (__ptr_t, size_t, const __ptr_t)
- __THROW;
-static __ptr_t
-tr_reallochook (ptr, size, caller)
- __ptr_t ptr;
- size_t size;
- const __ptr_t caller;
+__THROW;
+static __ptr_t tr_reallochook (ptr, size, caller)
+__ptr_t ptr;
+size_t size;
+const __ptr_t caller;
{
__ptr_t hdr;
@@ -209,7 +205,7 @@ tr_reallochook (ptr, size, caller)
__malloc_hook = tr_old_malloc_hook;
__realloc_hook = tr_old_realloc_hook;
if (tr_old_realloc_hook != NULL)
- hdr = (__ptr_t) (*tr_old_realloc_hook) (ptr, size, caller);
+ hdr = (__ptr_t) (*tr_old_realloc_hook)(ptr, size, caller);
else
hdr = (__ptr_t) realloc (ptr, size);
__free_hook = tr_freehook;
@@ -220,10 +216,10 @@ tr_reallochook (ptr, size, caller)
if (hdr == NULL)
{
if (size != 0)
- /* Failed realloc. */
- fprintf (mallstream, "! %p %#lx\n", ptr, (unsigned long int) size);
+ /* Failed realloc. */
+ fprintf (mallstream, "! %p %#lx\n", ptr, (unsigned long int) size);
else
- fprintf (mallstream, "- %p\n", ptr);
+ fprintf (mallstream, "- %p\n", ptr);
}
else if (ptr == NULL)
fprintf (mallstream, "+ %p %#lx\n", hdr, (unsigned long int) size);
@@ -243,11 +239,10 @@ tr_reallochook (ptr, size, caller)
}
static __ptr_t tr_memalignhook (size_t, size_t,
- const __ptr_t) __THROW;
-static __ptr_t
-tr_memalignhook (alignment, size, caller)
- size_t alignment, size;
- const __ptr_t caller;
+ const __ptr_t) __THROW;
+static __ptr_t tr_memalignhook (alignment, size, caller)
+size_t alignment, size;
+const __ptr_t caller;
{
__ptr_t hdr;
@@ -257,7 +252,7 @@ tr_memalignhook (alignment, size, caller)
__memalign_hook = tr_old_memalign_hook;
__malloc_hook = tr_old_malloc_hook;
if (tr_old_memalign_hook != NULL)
- hdr = (__ptr_t) (*tr_old_memalign_hook) (alignment, size, caller);
+ hdr = (__ptr_t) (*tr_old_memalign_hook)(alignment, size, caller);
else
hdr = (__ptr_t) memalign (alignment, size);
__memalign_hook = tr_memalignhook;
@@ -321,44 +316,44 @@ mtrace (void)
{
char *mtb = malloc (TRACE_BUFFER_SIZE);
if (mtb == NULL)
- return;
+ return;
mallstream = fopen (mallfile != NULL ? mallfile : "/dev/null", "wce");
if (mallstream != NULL)
- {
+ {
#ifndef __ASSUME_O_CLOEXEC
- /* Make sure we close the file descriptor on exec. */
- int flags = __fcntl (fileno (mallstream), F_GETFD, 0);
- if (flags >= 0)
- {
- flags |= FD_CLOEXEC;
- __fcntl (fileno (mallstream), F_SETFD, flags);
- }
+ /* Make sure we close the file descriptor on exec. */
+ int flags = __fcntl (fileno (mallstream), F_GETFD, 0);
+ if (flags >= 0)
+ {
+ flags |= FD_CLOEXEC;
+ __fcntl (fileno (mallstream), F_SETFD, flags);
+ }
#endif
- /* Be sure it doesn't malloc its buffer! */
- malloc_trace_buffer = mtb;
- setvbuf (mallstream, malloc_trace_buffer, _IOFBF, TRACE_BUFFER_SIZE);
- fprintf (mallstream, "= Start\n");
- tr_old_free_hook = __free_hook;
- __free_hook = tr_freehook;
- tr_old_malloc_hook = __malloc_hook;
- __malloc_hook = tr_mallochook;
- tr_old_realloc_hook = __realloc_hook;
- __realloc_hook = tr_reallochook;
- tr_old_memalign_hook = __memalign_hook;
- __memalign_hook = tr_memalignhook;
+ /* Be sure it doesn't malloc its buffer! */
+ malloc_trace_buffer = mtb;
+ setvbuf (mallstream, malloc_trace_buffer, _IOFBF, TRACE_BUFFER_SIZE);
+ fprintf (mallstream, "= Start\n");
+ tr_old_free_hook = __free_hook;
+ __free_hook = tr_freehook;
+ tr_old_malloc_hook = __malloc_hook;
+ __malloc_hook = tr_mallochook;
+ tr_old_realloc_hook = __realloc_hook;
+ __realloc_hook = tr_reallochook;
+ tr_old_memalign_hook = __memalign_hook;
+ __memalign_hook = tr_memalignhook;
#ifdef _LIBC
- if (!added_atexit_handler)
- {
- extern void *__dso_handle __attribute__ ((__weak__));
- added_atexit_handler = 1;
- __cxa_atexit ((void (*) (void *)) release_libc_mem, NULL,
- &__dso_handle ? __dso_handle : NULL);
- }
+ if (!added_atexit_handler)
+ {
+ extern void *__dso_handle __attribute__ ((__weak__));
+ added_atexit_handler = 1;
+ __cxa_atexit ((void (*)(void *))release_libc_mem, NULL,
+ &__dso_handle ? __dso_handle : NULL);
+ }
#endif
- }
+ }
else
- free (mtb);
+ free (mtb);
}
}
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