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mt_allocator.h (__mt_alloc<>::deallocate): The critical section is actually very small, only two assignments. 

2004-04-05  Paolo Carlini  <pcarlini@suse.de>

	* include/ext/mt_allocator.h (__mt_alloc<>::deallocate):
	The critical section is actually very small, only two assignments.

From-SVN: r80439
This commit is contained in:
Paolo Carlini 2004-04-05 22:46:04 +00:00 committed by Paolo Carlini
parent e0e4ac7fb4
commit 268d3b1832
2 changed files with 10 additions and 7 deletions
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5
libstdc++-v3/ChangeLog
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@ -1,3 +1,8 @@
2004-04-05 Paolo Carlini <pcarlini@suse.de>
* include/ext/mt_allocator.h (__mt_alloc<>::deallocate):
The critical section is actually very small, only two assignments.
2004-04-04 Paolo Carlini <pcarlini@suse.de>
Petur Runolfsson <peturr02@ru.is>

12
libstdc++-v3/include/ext/mt_allocator.h
View File

@ -430,20 +430,18 @@ namespace __gnu_cxx
* _S_options._M_freelist_headroom)
&& __remove > static_cast<long>(__bin._M_free[__thread_id]))
{
__gthread_mutex_lock(__bin._M_mutex);
_Block_record* __tmp = __bin._M_first[__thread_id];
_Block_record* __first = __tmp;
__remove /= _S_options._M_freelist_headroom;
const long __removed = __remove;
while (__remove > 1)
{
__tmp = __tmp->_M_next;
--__remove;
}
while (__remove-- > 1)
__tmp = __tmp->_M_next;
__bin._M_first[__thread_id] = __tmp->_M_next;
__bin._M_free[__thread_id] -= __removed;
__gthread_mutex_lock(__bin._M_mutex);
__tmp->_M_next = __bin._M_first[0];
__bin._M_first[0] = __first;
__bin._M_free[__thread_id] -= __removed;
__gthread_mutex_unlock(__bin._M_mutex);
}