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| author | Ulrich Drepper <drepper@redhat.com> | 2009-02-06 18:24:23 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-02-06 18:24:23 +0000 |
| commit | c3ab42a82de7506c17749e78a171ce07ced95dd5 (patch) | |
| tree | adaceb32018570a346c594e56d32dc2b4d1b57ae /malloc/memusage.c | |
| parent | 2191e7ffa2c7617ece91d5b9c384d0d3189411e0 (diff) | |
| download | glibc-c3ab42a82de7506c17749e78a171ce07ced95dd5.tar.gz glibc-c3ab42a82de7506c17749e78a171ce07ced95dd5.tar.xz glibc-c3ab42a82de7506c17749e78a171ce07ced95dd5.zip | |
* malloc/memusage.c (update_data): Fix handling of wrapping back
to the beginning of the buffer.
Diffstat (limited to 'malloc/memusage.c')
| -rw-r--r-- | malloc/memusage.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/malloc/memusage.c b/malloc/memusage.c index d11e9e6ed5..6c67a8c2e8 100644 --- a/malloc/memusage.c +++ b/malloc/memusage.c @@ -1,5 +1,5 @@ /* Profile heap and stack memory usage of running program. - Copyright (C) 1998-2002, 2004, 2005, 2006 Free Software Foundation, Inc. + Copyright (C) 1998-2002, 2004-2006, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. @@ -18,6 +18,7 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <assert.h> #include <atomic.h> #include <dlfcn.h> #include <errno.h> @@ -168,10 +169,11 @@ update_data (struct header *result, size_t len, size_t old_len) this fails because of another thread increasing the counter it does not matter since that thread will take care of the correction. */ - unsigned int reset = idx - 2 * buffer_size; - catomic_compare_and_exchange_val_acq (&buffer_size, reset, idx); + uatomic32_t reset = idx % (2 * buffer_size); + catomic_compare_and_exchange_val_acq (&buffer_cnt, reset, idx); idx = reset; } + assert (idx < 2 * DEFAULT_BUFFER_SIZE); buffer[idx].heap = current_heap; buffer[idx].stack = current_stack; |