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Re: emacs-22.1 with GTK dumps core when Gnome wigets clicked


From: YAMAMOTO Mitsuharu
Subject: Re: emacs-22.1 with GTK dumps core when Gnome wigets clicked
Date: Thu, 14 Jun 2007 11:16:30 +0900
User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shij┼Ź) APEL/10.6 Emacs/22.1.50 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)

I found a possible problem, which may or may not be relevant to this
issue, in the initialization of the recursive mutex in src/gmalloc.c.
Could you try this patch?

                                     YAMAMOTO Mitsuharu
                                address@hidden

Index: src/gmalloc.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/gmalloc.c,v
retrieving revision 1.21
diff -c -p -r1.21 gmalloc.c
*** src/gmalloc.c       28 Mar 2007 08:16:05 -0000      1.21
--- src/gmalloc.c       14 Jun 2007 02:03:33 -0000
*************** extern __malloc_size_t _bytes_free;
*** 235,240 ****
--- 235,243 ----
  extern __ptr_t _malloc_internal PP ((__malloc_size_t __size));
  extern __ptr_t _realloc_internal PP ((__ptr_t __ptr, __malloc_size_t __size));
  extern void _free_internal PP ((__ptr_t __ptr));
+ extern __ptr_t _malloc_internal_nolock PP ((__malloc_size_t __size));
+ extern __ptr_t _realloc_internal_nolock PP ((__ptr_t __ptr, __malloc_size_t 
__size));
+ extern void _free_internal_nolock PP ((__ptr_t __ptr));
  
  #ifdef USE_PTHREAD
  extern pthread_mutex_t _malloc_mutex;
*************** register_heapinfo ()
*** 554,560 ****
  
  #ifdef USE_PTHREAD
  static pthread_once_t malloc_init_once_control = PTHREAD_ONCE_INIT;
! pthread_mutex_t _malloc_mutex;
  #endif
  
  static void
--- 557,563 ----
  
  #ifdef USE_PTHREAD
  static pthread_once_t malloc_init_once_control = PTHREAD_ONCE_INIT;
! pthread_mutex_t _malloc_mutex = PTHREAD_MUTEX_INITIALIZER;
  #endif
  
  static void
*************** malloc_initialize_1 ()
*** 567,573 ****
    if (__malloc_initialize_hook)
      (*__malloc_initialize_hook) ();
  
! #ifdef USE_PTHREAD
    {
      pthread_mutexattr_t attr;
  
--- 570,578 ----
    if (__malloc_initialize_hook)
      (*__malloc_initialize_hook) ();
  
!   /* We don't use recursive mutex because pthread_mutexattr_init may
!      call malloc internally.  */
! #if 0 /* defined (USE_PTHREAD) */
    {
      pthread_mutexattr_t attr;
  
*************** morecore (size)
*** 661,667 ****
             `morecore_recursing' flag and return null.  */
          int save = errno;     /* Don't want to clobber errno with ENOMEM.  */
          morecore_recursing = 1;
!         newinfo = (malloc_info *) _realloc_internal
            (_heapinfo, newsize * sizeof (malloc_info));
          morecore_recursing = 0;
          if (newinfo == NULL)
--- 666,672 ----
             `morecore_recursing' flag and return null.  */
          int save = errno;     /* Don't want to clobber errno with ENOMEM.  */
          morecore_recursing = 1;
!         newinfo = (malloc_info *) _realloc_internal_nolock
            (_heapinfo, newsize * sizeof (malloc_info));
          morecore_recursing = 0;
          if (newinfo == NULL)
*************** morecore (size)
*** 717,723 ****
        /* Reset _heaplimit so _free_internal never decides
         it can relocate or resize the info table.  */
        _heaplimit = 0;
!       _free_internal (oldinfo);
        PROTECT_MALLOC_STATE (0);
  
        /* The new heap limit includes the new table just allocated.  */
--- 722,728 ----
        /* Reset _heaplimit so _free_internal never decides
         it can relocate or resize the info table.  */
        _heaplimit = 0;
!       _free_internal_nolock (oldinfo);
        PROTECT_MALLOC_STATE (0);
  
        /* The new heap limit includes the new table just allocated.  */
*************** morecore (size)
*** 732,738 ****
  
  /* Allocate memory from the heap.  */
  __ptr_t
! _malloc_internal (size)
       __malloc_size_t size;
  {
    __ptr_t result;
--- 737,743 ----
  
  /* Allocate memory from the heap.  */
  __ptr_t
! _malloc_internal_nolock (size)
       __malloc_size_t size;
  {
    __ptr_t result;
*************** _malloc_internal (size)
*** 752,758 ****
      return NULL;
  #endif
  
-   LOCK ();
    PROTECT_MALLOC_STATE (0);
  
    if (size < sizeof (struct list))
--- 757,762 ----
*************** _malloc_internal (size)
*** 802,811 ****
          /* No free fragments of the desired size, so get a new block
             and break it into fragments, returning the first.  */
  #ifdef GC_MALLOC_CHECK
!         result = _malloc_internal (BLOCKSIZE);
          PROTECT_MALLOC_STATE (0);
  #else
!         result = malloc (BLOCKSIZE);
  #endif
          if (result == NULL)
            {
--- 806,815 ----
          /* No free fragments of the desired size, so get a new block
             and break it into fragments, returning the first.  */
  #ifdef GC_MALLOC_CHECK
!         result = _malloc_internal_nolock (BLOCKSIZE);
          PROTECT_MALLOC_STATE (0);
  #else
!         result = _malloc_internal_nolock (BLOCKSIZE);
  #endif
          if (result == NULL)
            {
*************** _malloc_internal (size)
*** 932,938 ****
--- 936,954 ----
  
    PROTECT_MALLOC_STATE (1);
   out:
+   return result;
+ }
+ 
+ __ptr_t
+ _malloc_internal (size)
+      __malloc_size_t size;
+ {
+   __ptr_t result;
+ 
+   LOCK ();
+   result = _malloc_internal_nolock (size);
    UNLOCK ();
+ 
    return result;
  }
  
*************** void (*__free_hook) PP ((__ptr_t __ptr))
*** 1024,1032 ****
  struct alignlist *_aligned_blocks = NULL;
  
  /* Return memory to the heap.
!    Like `free' but don't call a __free_hook if there is one.  */
  void
! _free_internal (ptr)
       __ptr_t ptr;
  {
    int type;
--- 1040,1048 ----
  struct alignlist *_aligned_blocks = NULL;
  
  /* Return memory to the heap.
!    Like `_free_internal' but don't lock mutex.  */
  void
! _free_internal_nolock (ptr)
       __ptr_t ptr;
  {
    int type;
*************** _free_internal (ptr)
*** 1043,1049 ****
    if (ptr == NULL)
      return;
  
-   LOCK ();
    PROTECT_MALLOC_STATE (0);
  
    for (l = _aligned_blocks; l != NULL; l = l->next)
--- 1059,1064 ----
*************** _free_internal (ptr)
*** 1158,1164 ****
                 table's blocks to the system before we have copied them to
                 the new location.  */
              _heaplimit = 0;
!             _free_internal (_heapinfo);
              _heaplimit = oldlimit;
  
              /* Tell malloc to search from the beginning of the heap for
--- 1173,1179 ----
                 table's blocks to the system before we have copied them to
                 the new location.  */
              _heaplimit = 0;
!             _free_internal_nolock (_heapinfo);
              _heaplimit = oldlimit;
  
              /* Tell malloc to search from the beginning of the heap for
*************** _free_internal (ptr)
*** 1166,1173 ****
              _heapindex = 0;
  
              /* Allocate new space for the info table and move its data.  */
!             newinfo = (malloc_info *) _malloc_internal (info_blocks
!                                                         * BLOCKSIZE);
              PROTECT_MALLOC_STATE (0);
              memmove (newinfo, _heapinfo, info_blocks * BLOCKSIZE);
              _heapinfo = newinfo;
--- 1181,1188 ----
              _heapindex = 0;
  
              /* Allocate new space for the info table and move its data.  */
!             newinfo = (malloc_info *) _malloc_internal_nolock (info_blocks
!                                                                * BLOCKSIZE);
              PROTECT_MALLOC_STATE (0);
              memmove (newinfo, _heapinfo, info_blocks * BLOCKSIZE);
              _heapinfo = newinfo;
*************** _free_internal (ptr)
*** 1231,1239 ****
          _bytes_free -= BLOCKSIZE;
  
  #ifdef GC_MALLOC_CHECK
!         _free_internal (ADDRESS (block));
  #else
!         free (ADDRESS (block));
  #endif
        }
        else if (_heapinfo[block].busy.info.frag.nfree != 0)
--- 1246,1254 ----
          _bytes_free -= BLOCKSIZE;
  
  #ifdef GC_MALLOC_CHECK
!         _free_internal_nolock (ADDRESS (block));
  #else
!         _free_internal_nolock (ADDRESS (block));
  #endif
        }
        else if (_heapinfo[block].busy.info.frag.nfree != 0)
*************** _free_internal (ptr)
*** 1269,1274 ****
--- 1284,1299 ----
      }
  
    PROTECT_MALLOC_STATE (1);
+ }
+ 
+ /* Return memory to the heap.
+    Like `free' but don't call a __free_hook if there is one.  */
+ void
+ _free_internal (ptr)
+      __ptr_t ptr;
+ {
+   LOCK ();
+   _free_internal_nolock (ptr);
    UNLOCK ();
  }
  
*************** __ptr_t (*__realloc_hook) PP ((__ptr_t _
*** 1415,1421 ****
     new region.  This module has incestuous knowledge of the
     internals of both free and malloc. */
  __ptr_t
! _realloc_internal (ptr, size)
       __ptr_t ptr;
       __malloc_size_t size;
  {
--- 1440,1446 ----
     new region.  This module has incestuous knowledge of the
     internals of both free and malloc. */
  __ptr_t
! _realloc_internal_nolock (ptr, size)
       __ptr_t ptr;
       __malloc_size_t size;
  {
*************** _realloc_internal (ptr, size)
*** 1425,1439 ****
  
    if (size == 0)
      {
!       _free_internal (ptr);
!       return _malloc_internal (0);
      }
    else if (ptr == NULL)
!     return _malloc_internal (size);
  
    block = BLOCK (ptr);
  
-   LOCK ();
    PROTECT_MALLOC_STATE (0);
  
    type = _heapinfo[block].busy.type;
--- 1450,1463 ----
  
    if (size == 0)
      {
!       _free_internal_nolock (ptr);
!       return _malloc_internal_nolock (0);
      }
    else if (ptr == NULL)
!     return _malloc_internal_nolock (size);
  
    block = BLOCK (ptr);
  
    PROTECT_MALLOC_STATE (0);
  
    type = _heapinfo[block].busy.type;
*************** _realloc_internal (ptr, size)
*** 1443,1453 ****
        /* Maybe reallocate a large block to a small fragment.  */
        if (size <= BLOCKSIZE / 2)
        {
!         result = _malloc_internal (size);
          if (result != NULL)
            {
              memcpy (result, ptr, size);
!             _free_internal (ptr);
              goto out;
            }
        }
--- 1467,1477 ----
        /* Maybe reallocate a large block to a small fragment.  */
        if (size <= BLOCKSIZE / 2)
        {
!         result = _malloc_internal_nolock (size);
          if (result != NULL)
            {
              memcpy (result, ptr, size);
!             _free_internal_nolock (ptr);
              goto out;
            }
        }
*************** _realloc_internal (ptr, size)
*** 1467,1473 ****
             Now we will free this chunk; increment the statistics counter
             so it doesn't become wrong when _free_internal decrements it.  */
          ++_chunks_used;
!         _free_internal (ADDRESS (block + blocks));
          result = ptr;
        }
        else if (blocks == _heapinfo[block].busy.info.size)
--- 1491,1497 ----
             Now we will free this chunk; increment the statistics counter
             so it doesn't become wrong when _free_internal decrements it.  */
          ++_chunks_used;
!         _free_internal_nolock (ADDRESS (block + blocks));
          result = ptr;
        }
        else if (blocks == _heapinfo[block].busy.info.size)
*************** _realloc_internal (ptr, size)
*** 1482,1489 ****
          /* Prevent free from actually returning memory to the system.  */
          oldlimit = _heaplimit;
          _heaplimit = 0;
!         _free_internal (ptr);
!         result = _malloc_internal (size);
          PROTECT_MALLOC_STATE (0);
          if (_heaplimit == 0)
            _heaplimit = oldlimit;
--- 1506,1513 ----
          /* Prevent free from actually returning memory to the system.  */
          oldlimit = _heaplimit;
          _heaplimit = 0;
!         _free_internal_nolock (ptr);
!         result = _malloc_internal_nolock (size);
          PROTECT_MALLOC_STATE (0);
          if (_heaplimit == 0)
            _heaplimit = oldlimit;
*************** _realloc_internal (ptr, size)
*** 1493,1505 ****
                 the thing we just freed.  Unfortunately it might
                 have been coalesced with its neighbors.  */
              if (_heapindex == block)
!               (void) _malloc_internal (blocks * BLOCKSIZE);
              else
                {
                  __ptr_t previous
!                   = _malloc_internal ((block - _heapindex) * BLOCKSIZE);
!                 (void) _malloc_internal (blocks * BLOCKSIZE);
!                 _free_internal (previous);
                }
              goto out;
            }
--- 1517,1529 ----
                 the thing we just freed.  Unfortunately it might
                 have been coalesced with its neighbors.  */
              if (_heapindex == block)
!               (void) _malloc_internal_nolock (blocks * BLOCKSIZE);
              else
                {
                  __ptr_t previous
!                   = _malloc_internal_nolock ((block - _heapindex) * 
BLOCKSIZE);
!                 (void) _malloc_internal_nolock (blocks * BLOCKSIZE);
!                 _free_internal_nolock (previous);
                }
              goto out;
            }
*************** _realloc_internal (ptr, size)
*** 1519,1536 ****
        {
          /* The new size is different; allocate a new space,
             and copy the lesser of the new size and the old. */
!         result = _malloc_internal (size);
          if (result == NULL)
            goto out;
          memcpy (result, ptr, min (size, (__malloc_size_t) 1 << type));
!         _free_internal (ptr);
        }
        break;
      }
  
    PROTECT_MALLOC_STATE (1);
   out:
    UNLOCK ();
    return result;
  }
  
--- 1543,1573 ----
        {
          /* The new size is different; allocate a new space,
             and copy the lesser of the new size and the old. */
!         result = _malloc_internal_nolock (size);
          if (result == NULL)
            goto out;
          memcpy (result, ptr, min (size, (__malloc_size_t) 1 << type));
!         _free_internal_nolock (ptr);
        }
        break;
      }
  
    PROTECT_MALLOC_STATE (1);
   out:
+   return result;
+ }
+ 
+ __ptr_t
+ _realloc_internal (ptr, size)
+      __ptr_t ptr;
+      __malloc_size_t size;
+ {
+   __ptr_t result;
+ 
+   LOCK();
+   result = _realloc_internal_nolock (ptr, size);
    UNLOCK ();
+ 
    return result;
  }
  




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