00001 /* 00002 * IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By 00003 * downloading, copying, installing or using the software you agree to 00004 * this license. If you do not agree to this license, do not download, 00005 * install, copy or use the software. 00006 * 00007 * Intel Open Source License 00008 * 00009 * Copyright (c) 2006 Intel Corporation. All rights reserved. 00010 * 00011 * Redistribution and use in source and binary forms, with or without 00012 * modification, are permitted provided that the following conditions are 00013 * met: 00014 * 00015 * Redistributions of source code must retain the above copyright 00016 * notice, this list of conditions and the following disclaimer. 00017 * 00018 * Redistributions in binary form must reproduce the above copyright 00019 * notice, this list of conditions and the following disclaimer in the 00020 * documentation and/or other materials provided with the distribution. 00021 * 00022 * Neither the name of the Intel Corporation nor the names of its 00023 * contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR 00030 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00031 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00032 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00033 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00034 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00035 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00036 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00037 */ 00038 00039 #include "RefCountedObject.h" 00040 00041 namespace oasys { 00042 00043 //---------------------------------------------------------------------- 00044 RefCountedObject::RefCountedObject(const char* logpath) 00045 : refcount_(0), 00046 logger_("RefCountedObject", logpath) 00047 { 00048 } 00049 00050 //---------------------------------------------------------------------- 00051 RefCountedObject::~RefCountedObject() 00052 { 00053 } 00054 00055 //---------------------------------------------------------------------- 00056 void 00057 RefCountedObject::add_ref(const char* what1, const char* what2) const 00058 { 00059 atomic_incr(&refcount_); 00060 00061 logger_.logf(LOG_DEBUG, 00062 "refcount *%p %u -> %u add %s %s", 00063 this, refcount_.value - 1, refcount_.value, what1, what2); 00064 00065 ASSERT(refcount_.value > 0); 00066 } 00067 00068 //---------------------------------------------------------------------- 00069 void 00070 RefCountedObject::del_ref(const char* what1, const char* what2) const 00071 { 00072 ASSERT(refcount_.value > 0); 00073 00074 logger_.logf(LOG_DEBUG, 00075 "refcount *%p %d -> %d del %s %s", 00076 this, refcount_.value, refcount_.value - 1, what1, what2); 00077 00078 // atomic_decr_test will only return true if the currently 00079 // executing thread is the one that sent the refcount to zero. 00080 // hence we are safe in knowing that there are no other references 00081 // on the object, and that only one thread will call 00082 // no_more_refs() 00083 00084 if (atomic_decr_test(&refcount_)) { 00085 ASSERT(refcount_.value == 0); 00086 no_more_refs(); 00087 } 00088 } 00089 00090 //---------------------------------------------------------------------- 00091 void 00092 RefCountedObject::no_more_refs() const 00093 { 00094 logger_.logf(LOG_DEBUG, "no_more_refs *%p... deleting object", this); 00095 delete this; 00096 } 00097 00098 //---------------------------------------------------------------------- 00099 int 00100 RefCountedObject::format(char* buf, size_t sz) const 00101 { 00102 return snprintf(buf, sz, "RefCountedObject %p", this); 00103 } 00104 00105 } // namespace oasys