Go to the documentation of this file.00001
00002
00003
00004
00005 #include "ace/OS_NS_sys_shm.h"
00006 #include "ace/Global_Macros.h"
00007 #include "ace/OS_NS_errno.h"
00008
00009 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
00010
00011 ACE_INLINE size_t
00012 ACE_SV_Shared_Memory::round_up (size_t len)
00013 {
00014 ACE_TRACE ("ACE_SV_Shared_Memory::round_up");
00015 return (len + ACE_SV_Shared_Memory::ALIGN_WORDB - 1) & ~(ACE_SV_Shared_Memory::ALIGN_WORDB - 1);
00016 }
00017
00018
00019
00020
00021 ACE_INLINE int
00022 ACE_SV_Shared_Memory::open (key_t external_id, size_t sz, int create, int perms)
00023 {
00024 ACE_TRACE ("ACE_SV_Shared_Memory::open");
00025 #if defined (ACE_WIN32)
00026 ACE_UNUSED_ARG(perms);
00027 ACE_UNUSED_ARG(create);
00028 ACE_UNUSED_ARG(sz);
00029 ACE_UNUSED_ARG(external_id);
00030 ACE_NOTSUP_RETURN (-1);
00031 #else
00032 this->segment_ptr_ = 0;
00033 this->size_ = sz;
00034
00035 this->internal_id_ = ACE_OS::shmget (external_id, sz, create | perms);
00036
00037 return this->internal_id_ == -1 ? -1 : 0;
00038 #endif
00039 }
00040
00041
00042
00043 ACE_INLINE int
00044 ACE_SV_Shared_Memory::attach (void *virtual_addr, int flags)
00045 {
00046 ACE_TRACE ("ACE_SV_Shared_Memory::attach");
00047 #if defined (ACE_WIN32)
00048 ACE_UNUSED_ARG(flags);
00049 ACE_UNUSED_ARG(virtual_addr);
00050 ACE_NOTSUP_RETURN (-1);
00051 #else
00052 this->segment_ptr_ = ACE_OS::shmat (this->internal_id_, virtual_addr, flags);
00053 return this->segment_ptr_ == (void *) -1 ? -1 : 0;
00054 #endif
00055 }
00056
00057
00058
00059 ACE_INLINE int
00060 ACE_SV_Shared_Memory::control (int cmd, void *buf)
00061 {
00062 ACE_TRACE ("ACE_SV_Shared_Memory::control");
00063 #if defined (ACE_WIN32)
00064 ACE_UNUSED_ARG(cmd);
00065 ACE_UNUSED_ARG(buf);
00066 ACE_NOTSUP_RETURN (-1);
00067 #else
00068 return ACE_OS::shmctl (this->internal_id_, cmd, (struct shmid_ds *) buf);
00069 #endif
00070 }
00071
00072
00073
00074 ACE_INLINE size_t
00075 ACE_SV_Shared_Memory::get_segment_size (void) const
00076 {
00077 ACE_TRACE ("ACE_SV_Shared_Memory::get_segment_size");
00078 return this->size_;
00079 }
00080
00081
00082
00083 ACE_INLINE int
00084 ACE_SV_Shared_Memory::remove (void)
00085 {
00086 ACE_TRACE ("ACE_SV_Shared_Memory::remove");
00087 #if defined (ACE_WIN32)
00088 ACE_NOTSUP_RETURN (-1);
00089 #else
00090 return ACE_OS::shmctl (this->internal_id_, IPC_RMID, 0);
00091 #endif
00092 }
00093
00094
00095
00096
00097 ACE_INLINE int
00098 ACE_SV_Shared_Memory::detach (void)
00099 {
00100 ACE_TRACE ("ACE_SV_Shared_Memory::detach");
00101 return ACE_OS::shmdt (this->segment_ptr_);
00102 }
00103
00104 ACE_INLINE void *
00105 ACE_SV_Shared_Memory::get_segment_ptr (void) const
00106 {
00107 ACE_TRACE ("ACE_SV_Shared_Memory::get_segment_ptr");
00108 return this->segment_ptr_;
00109 }
00110
00111 ACE_INLINE ACE_HANDLE
00112 ACE_SV_Shared_Memory::get_id (void) const
00113 {
00114 ACE_TRACE ("ACE_SV_Shared_Memory::get_id");
00115 return this->internal_id_;
00116 }
00117
00118 ACE_END_VERSIONED_NAMESPACE_DECL