Imported Upstream version 3.2.2

[debian/gnuradio] / omnithread / threaddata.cc

diff --git a/omnithread/threaddata.cc b/omnithread/threaddata.cc
new file mode 100644 (file)
index 0000000..d54c439
--- /dev/null
+++ b/omnithread/threaddata.cc
@@ -0,0 +1,83 @@
+//                             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;
+}