cond_dealtor.hpp
Go to the documentation of this file.00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025
00026
00027
00028
00029
00030
00031
00032
00033
00034
00035
00036
00037
00038
00039
00040
00041 #ifndef PB_DS_COND_DEALTOR_HPP
00042 #define PB_DS_COND_DEALTOR_HPP
00043
00044 namespace __gnu_pbds
00045 {
00046
00047 namespace detail
00048 {
00049
00050 #define PB_DS_COND_DEALTOR_CLASS_T_DEC \
00051 template<typename Entry, class Allocator>
00052
00053 #define PB_DS_COND_DEALTOR_CLASS_C_DEC \
00054 cond_dealtor< \
00055 Entry, \
00056 Allocator>
00057
00058 template<typename Entry, class Allocator>
00059 class cond_dealtor
00060 {
00061 public:
00062 typedef
00063 typename Allocator::template rebind<Entry>::other
00064 entry_allocator;
00065
00066 typedef typename entry_allocator::pointer entry_pointer;
00067
00068 public:
00069 inline
00070 cond_dealtor(entry_pointer p_e);
00071
00072 inline
00073 ~cond_dealtor();
00074
00075 inline void
00076 set_no_action();
00077
00078 private:
00079 entry_pointer m_p_e;
00080
00081 bool m_no_action_destructor;
00082
00083 static entry_allocator s_alloc;
00084 };
00085
00086 PB_DS_COND_DEALTOR_CLASS_T_DEC
00087 typename PB_DS_COND_DEALTOR_CLASS_C_DEC::entry_allocator
00088 PB_DS_COND_DEALTOR_CLASS_C_DEC::s_alloc;
00089
00090 PB_DS_COND_DEALTOR_CLASS_T_DEC
00091 inline
00092 PB_DS_COND_DEALTOR_CLASS_C_DEC::
00093 cond_dealtor(entry_pointer p_e) :
00094 m_p_e(p_e),
00095 m_no_action_destructor(false)
00096 { }
00097
00098 PB_DS_COND_DEALTOR_CLASS_T_DEC
00099 inline void
00100 PB_DS_COND_DEALTOR_CLASS_C_DEC::
00101 set_no_action()
00102 {
00103 m_no_action_destructor = true;
00104 }
00105
00106 PB_DS_COND_DEALTOR_CLASS_T_DEC
00107 inline
00108 PB_DS_COND_DEALTOR_CLASS_C_DEC::
00109 ~cond_dealtor()
00110 {
00111 if (m_no_action_destructor)
00112 return;
00113
00114 s_alloc.deallocate(m_p_e, 1);
00115 }
00116
00117 #undef PB_DS_COND_DEALTOR_CLASS_T_DEC
00118 #undef PB_DS_COND_DEALTOR_CLASS_C_DEC
00119
00120 }
00121
00122 }
00123
00124 #endif // #ifndef PB_DS_COND_DEALTOR_HPP
00125