mirrors/gcc
0
0
Fork 0
mirror of https://gcc.gnu.org/git/gcc.git synced 2024-12-03 08:44:23 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

2005-04-14 Benjamin Kosnik <bkoz@redhat.com>

Browse Source 
* include/ext/bitmap_allocator.h
        (__gnu_cxx::free_list::_M_get_mutex): New.
        (__gnu_cxx::free_list::_M_get_free_list): New.
        (__gnu_cxx::free_list::_S_bfl_mutex): Remove.
        (__gnu_cxx::free_list::_S_free_list): Remove.
        * src/bitmap_allocator.cc: Same.
        * config/linker-map.gnu: Remove free_list and mutex export.

From-SVN: r98173
This commit is contained in:
Benjamin Kosnik 2005-04-15 04:07:45 +00:00 committed by Benjamin Kosnik
parent 25cd19de2f
commit 57b11c9654
4 changed files with 42 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,13 @@
2005-04-14 Benjamin Kosnik <bkoz@redhat.com>
* include/ext/bitmap_allocator.h
(__gnu_cxx::free_list::_M_get_mutex): New.
(__gnu_cxx::free_list::_M_get_free_list): New.
(__gnu_cxx::free_list::_S_bfl_mutex): Remove.
(__gnu_cxx::free_list::_S_free_list): Remove.
* src/bitmap_allocator.cc: Same.
* config/linker-map.gnu: Remove free_list and mutex export.
2005-04-14 Benjamin Kosnik <bkoz@redhat.com>
* include/ext/pod_char_traits.h (__gnu_cxx::character): Add char_type.

2
libstdc++-v3/config/linker-map.gnu
View File

@ -299,8 +299,6 @@ GLIBCXX_3.4.4 {
_ZN9__gnu_cxx6__poolILb[01]EE16_M_reclaim_blockEPc[jm];
_ZN9__gnu_cxx6__poolILb[01]EE10_M_destroyEv;
_ZN9__gnu_cxx9free_list12_S_free_listE;
_ZN9__gnu_cxx9free_list12_S_bfl_mutexE;
_ZN9__gnu_cxx9free_list6_M_getE*;
_ZN9__gnu_cxx9free_list8_M_clearEv;

34
libstdc++-v3/include/ext/bitmap_allocator.h
View File

@ -1,6 +1,6 @@
// Bitmap Allocator. -*- C++ -*-
// Copyright (C) 2004 Free Software Foundation, Inc.
// Copyright (C) 2004, 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@ -717,10 +717,21 @@ namespace __gnu_cxx
{ return *__pui < __cui; }
};
#if defined __GTHREADS
static _Mutex _S_bfl_mutex;
#if defined __GTHREADS
_Mutex*
_M_get_mutex()
{
static _Mutex _S_mutex;
return &_S_mutex;
}
#endif
static vector_type _S_free_list;
vector_type&
_M_get_free_list()
{
static vector_type _S_free_list;
return _S_free_list;
}
/** @brief Performs validation of memory based on their size.
*
@ -735,12 +746,13 @@ namespace __gnu_cxx
void
_M_validate(size_t* __addr) throw()
{
vector_type& __free_list = _M_get_free_list();
const vector_type::size_type __max_size = 64;
if (_S_free_list.size() >= __max_size)
if (__free_list.size() >= __max_size)
{
// Ok, the threshold value has been reached. We determine
// which block to remove from the list of free blocks.
if (*__addr >= *_S_free_list.back())
if (*__addr >= *__free_list.back())
{
// Ok, the new block is greater than or equal to the
// last block in the list of free blocks. We just free
@ -752,18 +764,18 @@ namespace __gnu_cxx
{
// Deallocate the last block in the list of free lists,
// and insert the new one in it's correct position.
::operator delete(static_cast<void*>(_S_free_list.back()));
_S_free_list.pop_back();
::operator delete(static_cast<void*>(__free_list.back()));
__free_list.pop_back();
}
}
// Just add the block to the list of free lists unconditionally.
iterator __temp = __gnu_cxx::balloc::__lower_bound
(_S_free_list.begin(), _S_free_list.end(),
(__free_list.begin(), __free_list.end(),
*__addr, _LT_pointer_compare());
// We may insert the new free list before _temp;
_S_free_list.insert(__temp, __addr);
__free_list.insert(__temp, __addr);
}
/** @brief Decides whether the wastage of memory is acceptable for
@ -801,7 +813,7 @@ namespace __gnu_cxx
_M_insert(size_t* __addr) throw()
{
#if defined __GTHREADS
_Auto_Lock __bfl_lock(&_S_bfl_mutex);
_Auto_Lock __bfl_lock(_M_get_mutex());
#endif
// Call _M_validate to decide what should be done with
// this particular free list.

22
libstdc++-v3/src/bitmap_allocator.cc
View File

@ -48,25 +48,20 @@ namespace __gnu_cxx
size_t const&, free_list::_LT_pointer_compare);
}
#if defined __GTHREADS
_Mutex free_list::_S_bfl_mutex;
#endif
free_list::vector_type free_list::_S_free_list;
size_t*
free_list::
_M_get(size_t __sz) throw(std::bad_alloc)
{
#if defined __GTHREADS
_Lock __bfl_lock(&_S_bfl_mutex);
_Lock __bfl_lock(_M_get_mutex());
__bfl_lock._M_lock();
#endif
iterator __temp =
__gnu_cxx::balloc::__lower_bound
(_S_free_list.begin(), _S_free_list.end(),
(_M_get_free_list().begin(), _M_get_free_list().end(),
__sz, _LT_pointer_compare());
if (__temp == _S_free_list.end() || !_M_should_i_give(**__temp, __sz))
if (__temp == _M_get_free_list().end() || !_M_should_i_give(**__temp, __sz))
{
// We release the lock here, because operator new is
// guaranteed to be thread-safe by the underlying
@ -101,7 +96,7 @@ namespace __gnu_cxx
else
{
size_t* __ret = *__temp;
_S_free_list.erase(__temp);
_M_get_free_list().erase(__temp);
#if defined __GTHREADS
__bfl_lock._M_unlock();
#endif
@ -114,15 +109,16 @@ namespace __gnu_cxx
_M_clear()
{
#if defined __GTHREADS
_Auto_Lock __bfl_lock(&_S_bfl_mutex);
_Auto_Lock __bfl_lock(_M_get_mutex());
#endif
iterator __iter = _S_free_list.begin();
while (__iter != _S_free_list.end())
vector_type& __free_list = _M_get_free_list();
iterator __iter = __free_list.begin();
while (__iter != __free_list.end())
{
::operator delete((void*)*__iter);
++__iter;
}
_S_free_list.clear();
__free_list.clear();
}
// Instantiations.