[commits] r2231 - in /fsf/trunk/libc: ChangeLog malloc/arena.c malloc/hooks.c malloc/malloc.c

[eglibc@xxxxxxxxxx]

Author: eglibc
Date: Mon May 14 00:02:43 2007
New Revision: 2231

Log:
Import glibc-mainline for 2007-05-14

Modified:
    fsf/trunk/libc/ChangeLog
    fsf/trunk/libc/malloc/arena.c
    fsf/trunk/libc/malloc/hooks.c
    fsf/trunk/libc/malloc/malloc.c

Modified: fsf/trunk/libc/ChangeLog
==============================================================================
--- fsf/trunk/libc/ChangeLog (original)
+++ fsf/trunk/libc/ChangeLog Mon May 14 00:02:43 2007
@@ -1,3 +1,10 @@
+2007-05-13  Ulrich Drepper  <drepper@xxxxxxxxxx>
+
+	* malloc/malloc.c [MALLOC_DEBUG]: Keep track of current maximum
+	number of mmaps.  n_mmaps_max is the target.
+	* malloc/hooks.c: Likewise.
+	* malloc/arena.c: Likewise.
+
 2007-05-12  Andreas Jaeger  <aj@xxxxxxx>
 
 	* sysdeps/unix/sysv/linux/tst-getcpu.c: Include <unistd.h> for

Modified: fsf/trunk/libc/malloc/arena.c
==============================================================================
--- fsf/trunk/libc/malloc/arena.c (original)
+++ fsf/trunk/libc/malloc/arena.c Mon May 14 00:02:43 2007
@@ -370,6 +370,9 @@
   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;

Modified: fsf/trunk/libc/malloc/hooks.c
==============================================================================
--- fsf/trunk/libc/malloc/hooks.c (original)
+++ fsf/trunk/libc/malloc/hooks.c Mon May 14 00:02:43 2007
@@ -1,5 +1,5 @@
 /* Malloc implementation for multiple threads without lock contention.
-   Copyright (C) 2001,2002,2003,2004,2005,2006 Free Software Foundation, Inc.
+   Copyright (C) 2001-2006, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Wolfram Gloger <wg@xxxxxxxxx>, 2001.
 
@@ -507,6 +507,9 @@
   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;
@@ -550,6 +553,9 @@
   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;
@@ -621,6 +627,9 @@
   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;

Modified: fsf/trunk/libc/malloc/malloc.c
==============================================================================
--- fsf/trunk/libc/malloc/malloc.c (original)
+++ fsf/trunk/libc/malloc/malloc.c Mon May 14 00:02:43 2007
@@ -2343,6 +2343,9 @@
   /* 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
@@ -2858,7 +2861,8 @@
   assert(total <= (unsigned long)(mp_.max_total_mem));
   assert(mp_.n_mmaps >= 0);
 #endif
-  assert(mp_.n_mmaps <= mp_.n_mmaps_max);
+  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) <=
@@ -3456,6 +3460,13 @@
     }
 
   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);
@@ -5371,6 +5382,9 @@
   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;
 
@@ -5696,8 +5710,17 @@
       res = 0;
     else
 #endif
-      mp_.n_mmaps_max = value;
-      mp_.no_dyn_threshold = 1;
+      {
+#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;
+      }
     break;
 
   case M_CHECK_ACTION: