Move malloc hooks into a compat DSO

[thirdparty/glibc.git] / malloc / arena.c

diff --git a/malloc/arena.c b/malloc/arena.c
index 0777dc70c6906a33e74fd752680c013febcce0d7..9111b49589ff50d9f42f20871db5f2402e0cf9e1 100644 (file)
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -207,7 +207,7 @@ __malloc_fork_unlock_child (void)
 }
 
 #if HAVE_TUNABLES
-void
+static void
 TUNABLE_CALLBACK (set_mallopt_check) (tunable_val_t *valp)
 {
   int32_t value = (int32_t) valp->numval;
@@ -217,7 +217,7 @@ TUNABLE_CALLBACK (set_mallopt_check) (tunable_val_t *valp)
 
 # define TUNABLE_CALLBACK_FNDECL(__name, __type) \
 static inline int do_ ## __name (__type value);                                      \
-void                                                                         \
+static void                                                                          \
 TUNABLE_CALLBACK (__name) (tunable_val_t *valp)                                      \
 {                                                                            \
   __type value = (__type) (valp)->numval;                                    \
@@ -274,45 +274,13 @@ next_env_entry (char ***position)
 #endif
 
 
-#if defined(SHARED) || defined(USE_MTAG)
-static void *
-__failing_morecore (ptrdiff_t d)
-{
-  return (void *) MORECORE_FAILURE;
-}
-#endif
-
 #ifdef SHARED
 extern struct dl_open_hook *_dl_open_hook;
 libc_hidden_proto (_dl_open_hook);
 #endif
 
-#ifdef USE_MTAG
-
-/* Generate a new (random) tag value for PTR and tag the memory it
-   points to upto the end of the usable size for the chunk containing
-   it.  Return the newly tagged pointer.  */
-static void *
-__mtag_tag_new_usable (void *ptr)
-{
-  if (ptr)
-    {
-      mchunkptr cp = mem2chunk(ptr);
-      ptr = __libc_mtag_tag_region (__libc_mtag_new_tag (ptr),
-                                   CHUNK_AVAILABLE_SIZE (cp) - CHUNK_HDR_SZ);
-    }
-  return ptr;
-}
-
-/* Generate a new (random) tag value for PTR, set the tags for the
-   memory to the new tag and initialize the memory contents to VAL.
-   In practice this function will only be called with VAL=0, but we
-   keep this parameter to maintain the same prototype as memset.  */
-static void *
-__mtag_tag_new_memset (void *ptr, int val, size_t size)
-{
-  return __libc_mtag_memset_with_tag (__libc_mtag_new_tag (ptr), val, size);
-}
+#if USE_TCACHE
+static void tcache_key_initialize (void);
 #endif
 
 static void
@@ -323,6 +291,10 @@ ptmalloc_init (void)
 
   __malloc_initialized = 0;
 
+#if USE_TCACHE
+  tcache_key_initialize ();
+#endif
+
 #ifdef USE_MTAG
   if ((TUNABLE_GET_FULL (glibc, mem, tagging, int32_t, NULL) & 1) != 0)
     {
@@ -330,14 +302,10 @@ ptmalloc_init (void)
         and that morecore does not support tagged regions, then
         disable it.  */
       if (__MTAG_SBRK_UNTAGGED)
-       __morecore = __failing_morecore;
-
-      __mtag_mmap_flags = __MTAG_MMAP_FLAGS;
-      __tag_new_memset = __mtag_tag_new_memset;
-      __tag_region = __libc_mtag_tag_region;
-      __tag_new_usable = __mtag_tag_new_usable;
-      __tag_at = __libc_mtag_address_get_tag;
-      __mtag_granule_mask = ~(size_t)(__MTAG_GRANULE_SIZE - 1);
+       __always_fail_morecore = true;
+
+      mtag_enabled = true;
+      mtag_mmap_flags = __MTAG_MMAP_FLAGS;
     }
 #endif
 
@@ -347,7 +315,7 @@ ptmalloc_init (void)
      generic sbrk implementation also enforces this, but it is not
      used on Hurd.  */
   if (!__libc_initial)
-    __morecore = __failing_morecore;
+    __always_fail_morecore = true;
 #endif
 
   thread_arena = &main_arena;
@@ -436,13 +404,6 @@ ptmalloc_init (void)
   if (s && s[0] != '\0' && s[0] != '0')
     __malloc_check_init ();
 #endif
-
-#if HAVE_MALLOC_INIT_HOOK
-  void (*hook) (void) = atomic_forced_read (__malloc_initialize_hook);
-  if (hook != NULL)
-    (*hook)();
-#endif
-  __malloc_initialized = 1;
 }
 
 /* Managing heaps and arenas (for concurrent threads) */
@@ -557,7 +518,7 @@ new_heap (size_t size, size_t top_pad)
             }
         }
     }
-  if (__mprotect (p2, size, MTAG_MMAP_FLAGS | PROT_READ | PROT_WRITE) != 0)
+  if (__mprotect (p2, size, mtag_mmap_flags | PROT_READ | PROT_WRITE) != 0)
     {
       __munmap (p2, HEAP_MAX_SIZE);
       return 0;
@@ -587,7 +548,7 @@ grow_heap (heap_info *h, long diff)
     {
       if (__mprotect ((char *) h + h->mprotect_size,
                       (unsigned long) new_size - h->mprotect_size,
-                      MTAG_MMAP_FLAGS | PROT_READ | PROT_WRITE) != 0)
+                      mtag_mmap_flags | PROT_READ | PROT_WRITE) != 0)
         return -2;
 
       h->mprotect_size = new_size;