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im-sdk  12.3.91
IMThreadP.cpp
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00001 /*
00002 Copyright 1990-2001 Sun Microsystems, Inc. All Rights Reserved.
00003 
00004 Permission is hereby granted, free of charge, to any person obtaining a
00005 copy of this software and associated documentation files (the
00006 "Software"), to deal in the Software without restriction, including
00007 without limitation the rights to use, copy, modify, merge, publish,
00008 distribute, sublicense, and/or sell copies of the Software, and to
00009 permit persons to whom the Software is furnished to do so, subject to
00010 the following conditions: The above copyright notice and this
00011 permission notice shall be included in all copies or substantial
00012 portions of the Software.
00013 
00014 
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00016 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00017 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00018 IN NO EVENT SHALL THE OPEN GROUP OR SUN MICROSYSTEMS, INC. BE LIABLE
00019 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
00020 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
00021 THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE EVEN IF
00022 ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES.
00023 
00024 
00025 Except as contained in this notice, the names of The Open Group and/or
00026 Sun Microsystems, Inc. shall not be used in advertising or otherwise to
00027 promote the sale, use or other dealings in this Software without prior
00028 written authorization from The Open Group and/or Sun Microsystems,
00029 Inc., as applicable.
00030 
00031 
00032 X Window System is a trademark of The Open Group
00033 
00034 OSF/1, OSF/Motif and Motif are registered trademarks, and OSF, the OSF
00035 logo, LBX, X Window System, and Xinerama are trademarks of the Open
00036 Group. All other trademarks and registered trademarks mentioned herein
00037 are the property of their respective owners. No right, title or
00038 interest in or to any trademark, service mark, logo or trade name of
00039 Sun Microsystems, Inc. or its licensors is granted.
00040 
00041 */
00042 
00043 #include <thread.h>
00044 #include "IMThread.hh"
00045 
00046 struct IMThreadP {
00047   void *stack_base;
00048   size_t stack_size;
00049   ThreadStartProc start_routine;
00050   void *arg;
00051   long flags;
00052   thread_t tid;
00053 };
00054 
00055 IMThread::IMThread(ThreadStartProc start_routine, void *arg) {
00056   p = new IMThreadP;
00057 
00058   p->stack_base = NULL;
00059   p->stack_size = 0;
00060   p->start_routine = start_routine;
00061   p->arg = arg;
00062   p->flags = 0;
00063   p->flags = THR_DETACHED;
00064   Manage();
00065 }
00066 
00067 IMThread::IMThread(void *stack_base, size_t stack_size,
00068                  ThreadStartProc start_routine,
00069                  void *arg, long flags) {
00070 
00071   size_t min_size = thr_min_stack();
00072 
00073   p = new IMThreadP;
00074 
00075   p->stack_base = stack_base;
00076 
00077   p->stack_size = (stack_size < min_size)? min_size : stack_size;
00078   p->start_routine = start_routine;
00079   p->arg = arg;
00080   p->flags = flags;
00081   Manage();
00082 }
00083 
00084 IMThread::~IMThread() {
00085   delete p;
00086   // thr_exit((void*)&status);
00087 }
00088 
00089 int
00090 IMThread::Manage() {
00091   int ret = thr_create(p->stack_base, p->stack_size, 
00092                      p->start_routine, p->arg, p->flags, &p->tid);
00093   return ret;
00094 }
00095 
00096 int
00097 IMThread::Unmanage() {
00098   return 0;
00099 }
00100 
00101 // thr_join(3T)
00102 
00103 int
00104 IMThread::Join(IMThread * wait_for, IMThread *departed, void **status) {
00105   return thr_join(wait_for->p->tid, &(departed->p->tid), status);
00106 }
00107 
00108 int
00109 IMThread::Join(IMThread *departed, void **status) {
00110   return Join(this, departed, status);
00111 }
00112 
00113 int
00114 IMThread::Join(void **status) {
00115   return Join(this, (IMThread *)0, (void**)status);
00116 }
00117 
00118 // thr_suspend(3T), thr_continue(3T)
00119 int
00120 IMThread::Suspend() {
00121   return thr_suspend(p->tid);
00122 }
00123 
00124 int
00125 IMThread::Continue() {
00126   return thr_continue(p->tid);
00127 }