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Simplify __malloc_initialized

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Now that mcheck no longer needs to check __malloc_initialized (and no
other third party hook can since the symbol is not exported), make the
variable boolean and static so that it is used strictly within malloc.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Siddhesh Poyarekar 2021-07-22 18:38:04 +05:30
parent c142eb253f
commit cc35896ea3
3 changed files with 18 additions and 24 deletions
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6
include/malloc.h
View File

@ -5,12 +5,6 @@
# ifndef _ISOMAC
# include <rtld-malloc.h>
/* In the GNU libc we rename the global variable
`__malloc_initialized' to `__libc_malloc_initialized'. */
#define __malloc_initialized __libc_malloc_initialized
/* Nonzero if the malloc is already initialized. */
extern int __malloc_initialized attribute_hidden;
struct malloc_state;
typedef struct malloc_state *mstate;

12
malloc/arena.c
View File

@ -97,7 +97,7 @@ static mstate free_list;
__libc_lock_define_initialized (static, list_lock);
/* Already initialized? */
int __malloc_initialized = -1;
static bool __malloc_initialized = false;
/**************************************************************************/
@ -143,7 +143,7 @@ int __malloc_initialized = -1;
void
__malloc_fork_lock_parent (void)
{
if (__malloc_initialized < 1)
if (!__malloc_initialized)
return;
/* We do not acquire free_list_lock here because we completely
@ -163,7 +163,7 @@ __malloc_fork_lock_parent (void)
void
__malloc_fork_unlock_parent (void)
{
if (__malloc_initialized < 1)
if (!__malloc_initialized)
return;
for (mstate ar_ptr = &main_arena;; )
@ -179,7 +179,7 @@ __malloc_fork_unlock_parent (void)
void
__malloc_fork_unlock_child (void)
{
if (__malloc_initialized < 1)
if (!__malloc_initialized)
return;
/* Push all arenas to the free list, except thread_arena, which is
@ -286,10 +286,10 @@ static void tcache_key_initialize (void);
static void
ptmalloc_init (void)
{
if (__malloc_initialized >= 0)
if (__malloc_initialized)
return;
__malloc_initialized = 0;
__malloc_initialized = true;
#if USE_TCACHE
tcache_key_initialize ();

24
malloc/malloc.c
View File

@ -3195,7 +3195,7 @@ __libc_malloc (size_t bytes)
_Static_assert (PTRDIFF_MAX <= SIZE_MAX / 2,
"PTRDIFF_MAX is not more than half of SIZE_MAX");
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
#if USE_TCACHE
/* int_free also calls request2size, be careful to not pad twice. */
@ -3308,7 +3308,7 @@ __libc_realloc (void *oldmem, size_t bytes)
void *newp; /* chunk to return */
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
#if REALLOC_ZERO_BYTES_FREES
@ -3444,7 +3444,7 @@ libc_hidden_def (__libc_realloc)
void *
__libc_memalign (size_t alignment, size_t bytes)
{
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
void *address = RETURN_ADDRESS (0);
@ -3515,7 +3515,7 @@ libc_hidden_def (__libc_memalign)
void *
__libc_valloc (size_t bytes)
{
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
void *address = RETURN_ADDRESS (0);
@ -3526,7 +3526,7 @@ __libc_valloc (size_t bytes)
void *
__libc_pvalloc (size_t bytes)
{
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
void *address = RETURN_ADDRESS (0);
@ -3565,7 +3565,7 @@ __libc_calloc (size_t n, size_t elem_size)
sz = bytes;
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
MAYBE_INIT_TCACHE ();
@ -5022,7 +5022,7 @@ __malloc_trim (size_t s)
{
int result = 0;
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
mstate ar_ptr = &main_arena;
@ -5157,7 +5157,7 @@ __libc_mallinfo2 (void)
struct mallinfo2 m;
mstate ar_ptr;
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
memset (&m, 0, sizeof (m));
@ -5208,7 +5208,7 @@ __malloc_stats (void)
mstate ar_ptr;
unsigned int in_use_b = mp_.mmapped_mem, system_b = in_use_b;
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
_IO_flockfile (stderr);
int old_flags2 = stderr->_flags2;
@ -5377,7 +5377,7 @@ __libc_mallopt (int param_number, int value)
mstate av = &main_arena;
int res = 1;
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
__libc_lock_lock (av->mutex);
@ -5595,7 +5595,7 @@ __posix_memalign (void **memptr, size_t alignment, size_t size)
{
void *mem;
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
/* Test whether the SIZE argument is valid. It must be a power of
@ -5639,7 +5639,7 @@ __malloc_info (int options, FILE *fp)
if (__malloc_initialized < 0)
if (!__malloc_initialized)
ptmalloc_init ();
fputs ("<malloc version=\"1\">\n", fp);