src/threads/threadlist.hpp

   1 /* src/threads/threadlist.hpp - different thread-lists
   2
   3    Copyright (C) 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #ifndef _THREADLIST_HPP
  27 #define _THREADLIST_HPP
  28
  29 #include "config.h"
  30
  31 #include <stdint.h>
  32
  33 #include "threads/thread.hpp"
  34
  35 #include "toolbox/list.hpp"
  36
  37
  38 /* ThreadList *****************************************************************/
  39
  40 #ifdef __cplusplus
  41
  42 class ThreadList {
  43 private:
  44         static Mutex               _mutex;              // a mutex for all thread lists
  45
  46         static List<threadobject*> _active_thread_list; // list of active threads
  47         static List<threadobject*> _free_thread_list;   // list of free threads
  48         static List<int32_t>       _free_index_list;    // list of free thread indexes
  49
  50         static int32_t             _number_of_non_daemon_threads;
  51
  52         static void                 remove_from_active_thread_list(threadobject* t);
  53         static void                 add_to_free_thread_list(threadobject* t);
  54         static void                 add_to_free_index_list(int32_t index);
  55
  56 private:
  57         // Comparator class.
  58         class comparator : public std::binary_function<threadobject*, int32_t, bool> {
  59         public:
  60                 bool operator() (const threadobject* t, const int32_t index) const
  61                 {
  62                         return (t->index == index);
  63                 }
  64         };
  65
  66 public:
  67         static void                 lock()   { _mutex.lock(); }
  68         static void                 unlock() { _mutex.unlock(); }
  69
  70         // TODO make private
  71         static void                 add_to_active_thread_list(threadobject* t);
  72
  73         static void                 dump_threads();
  74         static void                 get_active_threads(List<threadobject*> &list);
  75         static threadobject*        get_main_thread();
  76         static threadobject*        get_free_thread();
  77         static int32_t              get_free_thread_index();
  78         static int32_t              get_number_of_non_daemon_threads();
  79         static threadobject*        get_thread_by_index(int32_t index);
  80         static threadobject*        get_thread_from_java_object(java_handle_t* h);
  81         static void                 release_thread(threadobject* t);
  82 };
  83
  84 struct ThreadListLocker {
  85         ThreadListLocker()  { ThreadList::lock(); }
  86         ~ThreadListLocker()  { ThreadList::unlock(); }
  87 };
  88
  89
  90 inline void ThreadList::add_to_active_thread_list(threadobject* t)
  91 {
  92         _active_thread_list.push_back(t);
  93 }
  94
  95 inline void ThreadList::remove_from_active_thread_list(threadobject* t)
  96 {
  97         _active_thread_list.remove(t);
  98 }
  99
 100 inline void ThreadList::add_to_free_thread_list(threadobject* t)
 101 {
 102         _free_thread_list.push_back(t);
 103 }
 104
 105 inline void ThreadList::add_to_free_index_list(int32_t index)
 106 {
 107         _free_index_list.push_back(index);
 108 }
 109
 110 inline threadobject* ThreadList::get_main_thread()
 111 {
 112         return _active_thread_list.front();
 113 }
 114
 115 #else
 116
 117 typedef struct ThreadList ThreadList;
 118
 119 void ThreadList_lock();
 120 void ThreadList_unlock();
 121 void ThreadList_dump_threads();
 122 void ThreadList_release_thread(threadobject* t);
 123 threadobject* ThreadList_get_free_thread();
 124 int32_t ThreadList_get_free_thread_index();
 125 void ThreadList_add_to_active_thread_list(threadobject* t);
 126 threadobject* ThreadList_get_thread_by_index(int32_t index);
 127 threadobject* ThreadList_get_main_thread();
 128 threadobject* ThreadList_get_thread_from_java_object(java_handle_t* h);
 129 int32_t ThreadList_get_number_of_non_daemon_threads();
 130
 131 #endif
 132
 133 #endif // _THREADLIST_HPP
 134
 135
 136 /*
 137  * These are local overrides for various environment variables in Emacs.
 138  * Please do not remove this and leave it at the end of the file, where
 139  * Emacs will automagically detect them.
 140  * ---------------------------------------------------------------------
 141  * Local variables:
 142  * mode: c++
 143  * indent-tabs-mode: t
 144  * c-basic-offset: 4
 145  * tab-width: 4
 146  * End:
 147  * vim:noexpandtab:sw=4:ts=4:
 148  */