source: patches/glibc-2.6-branch_update-1.patch@ c304f4c

Submitted By: Jim Gifford (jim at linuxfromscratch dot org)
Date: 06-05-2007
Initial Package Version: 2.6
Origin: Upstream
Upstream Status: Applied
Description: This is a branch update for Glibc-2.6, and should be
             rechecked periodically. See the 'Changelog' and 'localedata/ChangeLog'
             for specific details.

2007-05-21  Jakub Jelinek  <jakub@redhat.com>

        * malloc/hooks.c (MALLOC_STATE_VERSION): Bump.
        (public_sET_STATe): If ms->version < 3, put all chunks into
        unsorted chunks and clear {fd,bk}_nextsize fields of largebin
        chunks.
        * malloc/malloc.c (do_check_malloc_state): Don't assert
        n_mmaps is not greater than n_mmaps_max.

        * malloc/malloc.c [MALLOC_DEBUG]: Revert 2007-05-13 changes.
        * malloc/hooks.c: Likewise.
        * malloc/arena.c: Likewise.
        * malloc/Makefile (CFLAGS-malloc.c): Revert accidental
        2007-05-07 commit.

--- libc/malloc/arena.c.jj      2007-05-20 20:01:52.000000000 +0200
+++ libc/malloc/arena.c 2007-05-21 11:18:13.000000000 +0200
@@ -370,9 +370,6 @@ ptmalloc_init_minimal (void)
   mp_.top_pad        = DEFAULT_TOP_PAD;
 #endif
   mp_.n_mmaps_max    = DEFAULT_MMAP_MAX;
-#if MALLOC_DEBUG
-  mp_.n_mmaps_cmax   = DEFAULT_MMAP_MAX;
-#endif
   mp_.mmap_threshold = DEFAULT_MMAP_THRESHOLD;
   mp_.trim_threshold = DEFAULT_TRIM_THRESHOLD;
   mp_.pagesize       = malloc_getpagesize;
--- libc/malloc/malloc.c.jj     2007-05-20 20:01:52.000000000 +0200
+++ libc/malloc/malloc.c        2007-05-21 11:19:32.000000000 +0200
@@ -2358,9 +2358,6 @@ struct malloc_par {
   /* Memory map support */
   int              n_mmaps;
   int              n_mmaps_max;
-#if MALLOC_DEBUG
-  int              n_mmaps_cmax;
-#endif
   int              max_n_mmaps;
   /* the mmap_threshold is dynamic, until the user sets
      it manually, at which point we need to disable any
@@ -2876,8 +2873,6 @@ static void do_check_malloc_state(mstate
   assert(total <= (unsigned long)(mp_.max_total_mem));
   assert(mp_.n_mmaps >= 0);
 #endif
-  assert(mp_.n_mmaps <= mp_.n_mmaps_cmax);
-  assert(mp_.n_mmaps_max <= mp_.n_mmaps_cmax);
   assert(mp_.n_mmaps <= mp_.max_n_mmaps);
 
   assert((unsigned long)(av->system_mem) <=
@@ -3475,13 +3470,6 @@ munmap_chunk(p) mchunkptr p;
     }
 
   mp_.n_mmaps--;
-#if MALLOC_DEBUG
-  if (mp_.n_mmaps_cmax > mp_.n_mmaps_max)
-    {
-      assert (mp_.n_mmaps_cmax == mp_.n_mmaps + 1);
-      mp_.n_mmaps_cmax = mp_.n_mmaps;
-    }
-#endif
   mp_.mmapped_mem -= total_size;
 
   int ret __attribute__ ((unused)) = munmap((char *)block, total_size);
@@ -5397,9 +5385,6 @@ mstate av; size_t n_elements; size_t* si
   mp_.n_mmaps_max = 0;
   mem = _int_malloc(av, size);
   mp_.n_mmaps_max = mmx;   /* reset mmap */
-#if MALLOC_DEBUG
-  mp_.n_mmaps_cmax = mmx;
-#endif
   if (mem == 0)
     return 0;
 
@@ -5725,17 +5710,8 @@ int mALLOPt(param_number, value) int par
       res = 0;
     else
 #endif
-      {
-#if MALLOC_DEBUG
-       if (mp_.n_mmaps <= value)
-         mp_.n_mmaps_cmax = value;
-       else
-         mp_.n_mmaps_cmax = mp_.n_mmaps;
-#endif
-
-       mp_.n_mmaps_max = value;
-       mp_.no_dyn_threshold = 1;
-      }
+      mp_.n_mmaps_max = value;
+      mp_.no_dyn_threshold = 1;
     break;
 
   case M_CHECK_ACTION:
--- libc/malloc/hooks.c.jj      2007-05-20 20:01:52.000000000 +0200
+++ libc/malloc/hooks.c 2007-05-21 11:18:13.000000000 +0200
@@ -496,7 +496,7 @@ free_starter(mem, caller) Void_t* mem; c
    then the hooks are reset to 0.  */
 
 #define MALLOC_STATE_MAGIC   0x444c4541l
-#define MALLOC_STATE_VERSION (0*0x100l + 2l) /* major*0x100 + minor */
+#define MALLOC_STATE_VERSION (0*0x100l + 3l) /* major*0x100 + minor */
 
 struct malloc_save_state {
   long          magic;
@@ -507,9 +507,6 @@ struct malloc_save_state {
   unsigned long trim_threshold;
   unsigned long top_pad;
   unsigned int  n_mmaps_max;
-#if MALLOC_DEBUG
-  unsigned int  n_mmaps_cmax;
-#endif
   unsigned long mmap_threshold;
   int           check_action;
   unsigned long max_sbrked_mem;
@@ -553,9 +550,6 @@ public_gET_STATe(void)
   ms->trim_threshold = mp_.trim_threshold;
   ms->top_pad = mp_.top_pad;
   ms->n_mmaps_max = mp_.n_mmaps_max;
-#if MALLOC_DEBUG
-  ms->n_mmaps_cmax = mp_.n_mmaps_cmax;
-#endif
   ms->mmap_threshold = mp_.mmap_threshold;
   ms->check_action = check_action;
   ms->max_sbrked_mem = main_arena.max_system_mem;
@@ -601,8 +595,9 @@ public_sET_STATe(Void_t* msptr)
       assert(ms->av[2*i+3] == 0);
       first(b) = last(b) = b;
     } else {
-      if(i<NSMALLBINS || (largebin_index(chunksize(ms->av[2*i+2]))==i &&
-                         largebin_index(chunksize(ms->av[2*i+3]))==i)) {
+      if(ms->version >= 3 &&
+        (i<NSMALLBINS || (largebin_index(chunksize(ms->av[2*i+2]))==i &&
+                          largebin_index(chunksize(ms->av[2*i+3]))==i))) {
        first(b) = ms->av[2*i+2];
        last(b) = ms->av[2*i+3];
        /* Make sure the links to the bins within the heap are correct.  */
@@ -622,14 +617,22 @@ public_sET_STATe(Void_t* msptr)
       }
     }
   }
+  if (ms->version < 3) {
+    /* Clear fd_nextsize and bk_nextsize fields.  */
+    b = unsorted_chunks(&main_arena)->fd;
+    while (b != unsorted_chunks(&main_arena)) {
+      if (!in_smallbin_range(chunksize(b))) {
+       b->fd_nextsize = NULL;
+       b->bk_nextsize = NULL;
+      }
+      b = b->fd;
+    }
+  }
   mp_.sbrk_base = ms->sbrk_base;
   main_arena.system_mem = ms->sbrked_mem_bytes;
   mp_.trim_threshold = ms->trim_threshold;
   mp_.top_pad = ms->top_pad;
   mp_.n_mmaps_max = ms->n_mmaps_max;
-#if MALLOC_DEBUG
-  mp_.n_mmaps_cmax = ms->n_mmaps_cmax;
-#endif
   mp_.mmap_threshold = ms->mmap_threshold;
   check_action = ms->check_action;
   main_arena.max_system_mem = ms->max_sbrked_mem;
--- libc/malloc/Makefile.jj     2007-04-30 11:51:54.000000000 +0200
+++ libc/malloc/Makefile        2007-05-21 11:20:41.000000000 +0200
@@ -104,7 +104,6 @@ $(objpfx)memusagestat: $(memusagestat-mo
 include ../Rules
 
 CFLAGS-mcheck-init.c = $(PIC-ccflag)
-CFLAGS-malloc.c += -DMALLOC_DEBUG
 
 $(objpfx)libmcheck.a: $(objpfx)mcheck-init.o
        -rm -f $@

        Jakub