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// Package : omnithread
// omnithread/threaddata.cc Created : 10/2000 dpg1
//
// Copyright (C) 2000 AT&T Laboratories Cambridge
//
// This file is part of the omnithread library
//
// The omnithread library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free
// Software Foundation, Inc., 51 Franklin Street, Boston, MA
// 02110-1301, USA
//
// Implementation of per-thread data
#ifndef INSIDE_THREAD_IMPL_CC
#error "threaddata.cc must be #included by a thread implementation."
#endif
static omni_thread::key_t allocated_keys = 0;
omni_thread::key_t
omni_thread::allocate_key()
{
omni_mutex_lock l(*next_id_mutex);
return ++allocated_keys;
}
omni_thread::value_t*
omni_thread::set_value(key_t k, value_t* v)
{
if (k == 0) return 0;
if (k > _value_alloc) {
next_id_mutex->lock();
key_t alloc = allocated_keys;
next_id_mutex->unlock();
if (k > alloc) return 0;
value_t** nv = new value_t*[alloc];
key_t i = 0;
if (_values) {
for (; i < _value_alloc; i++)
nv[i] = _values[i];
delete [] _values;
}
for (; i < alloc; i++)
nv[i] = 0;
_values = nv;
_value_alloc = alloc;
}
if (_values[k-1]) delete _values[k-1];
_values[k-1] = v;
return v;
}
omni_thread::value_t*
omni_thread::get_value(key_t k)
{
if (k > _value_alloc) return 0;
return _values[k-1];
}
omni_thread::value_t*
omni_thread::remove_value(key_t k)
{
if (k > _value_alloc) return 0;
value_t* v = _values[k-1];
_values[k-1] = 0;
return v;
}
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