00001 /***************************************************************************** 00002 * Product: QF/C 00003 * Last Updated for Version: 4.0.00 00004 * Date of the Last Update: Apr 07, 2008 00005 * 00006 * Q u a n t u m L e a P s 00007 * --------------------------- 00008 * innovating embedded systems 00009 * 00010 * Copyright (C) 2002-2008 Quantum Leaps, LLC. All rights reserved. 00011 * 00012 * This software may be distributed and modified under the terms of the GNU 00013 * General Public License version 2 (GPL) as published by the Free Software 00014 * Foundation and appearing in the file GPL.TXT included in the packaging of 00015 * this file. Please note that GPL Section 2[b] requires that all works based 00016 * on this software must also be made publicly available under the terms of 00017 * the GPL ("Copyleft"). 00018 * 00019 * Alternatively, this software may be distributed and modified under the 00020 * terms of Quantum Leaps commercial licenses, which expressly supersede 00021 * the GPL and are specifically designed for licensees interested in 00022 * retaining the proprietary status of their code. 00023 * 00024 * Contact information: 00025 * Quantum Leaps Web site: http://www.quantum-leaps.com 00026 * e-mail: info@quantum-leaps.com 00027 *****************************************************************************/ 00028 #include "qf_pkg.h" 00029 #include "qassert.h" 00030 00031 Q_DEFINE_THIS_MODULE(qf_gc) 00032 00033 00039 /*..........................................................................*/ 00040 void QF_gc(QEvent const *e) { 00041 if (e->dynamic_ != (uint8_t)0) { /* is it a dynamic event? */ 00042 QF_INT_LOCK_KEY_ 00043 QF_INT_LOCK_(); 00044 00045 if ((e->dynamic_ & 0x3F) > (uint8_t)1) {/* isn't this the last ref? */ 00046 00047 /*lint -e1773 Attempt to cast away const */ 00048 --((QEvent *)e)->dynamic_; /* decrement the reference counter */ 00049 /* NOTE: cast the 'const' away, which is legitimate because 00050 * it's a pool event 00051 */ 00052 00053 QS_BEGIN_NOLOCK_(QS_QF_GC_ATTEMPT, (void *)0, (void *)0) 00054 QS_TIME_(); /* timestamp */ 00055 QS_SIG_(e->sig); /* the signal of the event */ 00056 QS_U8_(e->dynamic_); /* the dynamic attributes of the event */ 00057 QS_END_NOLOCK_() 00058 00059 QF_INT_UNLOCK_(); 00060 } 00061 else { /* this is the last reference to this event, recycle it */ 00062 /* cannot wrap around */ 00063 uint8_t idx = (uint8_t)((e->dynamic_ >> 6) - 1); 00064 00065 QS_BEGIN_NOLOCK_(QS_QF_GC, (void *)0, (void *)0) 00066 QS_TIME_(); /* timestamp */ 00067 QS_SIG_(e->sig); /* the signal of the event */ 00068 QS_U8_(e->dynamic_); /* the dynamic attributes of the event */ 00069 QS_END_NOLOCK_() 00070 00071 QF_INT_UNLOCK_(); 00072 00073 Q_ASSERT(idx < QF_maxPool_); 00074 00075 /*lint -e1773 Attempt to cast away const */ 00076 QF_EPOOL_PUT_(QF_pool_[idx], (QEvent *)e);/* cast 'const' away, */ 00077 /* which is legitimate, because it's a pool event */ 00078 } 00079 } 00080 }
1.6.3