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Diffstat (limited to 'ACE/ace/MEM_Acceptor.h')
| -rw-r--r-- | ACE/ace/MEM_Acceptor.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/ACE/ace/MEM_Acceptor.h b/ACE/ace/MEM_Acceptor.h new file mode 100644 index 00000000000..7b085f825ca --- /dev/null +++ b/ACE/ace/MEM_Acceptor.h @@ -0,0 +1,192 @@ +// -*- C++ -*- + +//============================================================================= +/** + * @file MEM_Acceptor.h + * + * $Id$ + * + * @author Nanbor Wang <nanbor@cs.wustl.edu> + */ +//============================================================================= + +#ifndef ACE_MEM_ACCEPTOR_H +#define ACE_MEM_ACCEPTOR_H +#include /**/ "ace/pre.h" + +#include "ace/ACE_export.h" + +#include "ace/SOCK_Acceptor.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +# pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#if (ACE_HAS_POSITION_INDEPENDENT_POINTERS == 1) + +#include "ace/MEM_Stream.h" +#include "ace/MEM_Addr.h" + +#if !defined (ACE_HAS_WINCE) +#include "ace/OS_QoS.h" +#endif // ACE_HAS_WINCE + +ACE_BEGIN_VERSIONED_NAMESPACE_DECL + +// Forward decl. +class ACE_Reactor; + +/** + * @class ACE_MEM_Acceptor + * + * @brief Defines the format and interface for the acceptor side of the + * local mmap stream. + * + * This class should be modified to prevent user passing a + * non-localhost endpoint as the acceptor listen point because + * it doesn't make any sense at all to make the listening + * endpoint visible (or connectable) anywhere outside of this + * machine. However, the type of endpoint is left as <ACE_Addr> + * so we can later changed to use UNIX-domain sockets with mmap stream + * if so desired. (Currently, using UNIX-domain sockets, i.e., + * ACE_LSOCK_*, with this class will not work.) + */ +class ACE_Export ACE_MEM_Acceptor : public ACE_SOCK_Acceptor +{ +public: + // = Initialization methods. + /// Default constructor. + ACE_MEM_Acceptor (void); + + /// destructor. + ~ACE_MEM_Acceptor (void); + + /// Initiate a passive mode socket. + ACE_MEM_Acceptor (const ACE_MEM_Addr &remote_sap, + int reuse_addr = 0, + int backlog = ACE_DEFAULT_BACKLOG, + int protocol = 0); + + /** + * Initialize a passive-mode BSD-style acceptor socket (no QoS). + * @a local_sap is the address that we're going to listen for + * connections on. If @a reuse_addr is 1 then we'll use the + * @c SO_REUSEADDR to reuse this address. Returns 0 on success and + * -1 on failure. + */ + int open (const ACE_MEM_Addr &local_sap, + int reuse_addr = 0, + int backlog = ACE_DEFAULT_BACKLOG, + int protocol = 0); + + /// Accept a new data transfer connection. + int accept (ACE_MEM_Stream &new_ipc_sap, + ACE_MEM_Addr *remote_addr = 0, + ACE_Time_Value *timeout = 0, + int restart = 1, + int reset_new_handle = 0); + + /// Perform operations that must occur after <ACE_OS::accept> is + /// called. + int shared_accept_finish (ACE_MEM_Stream new_stream, + int in_blocking_mode, + int reset_new_handle) const; + + /** + * Accessor/mutator of mmap filename prefix. By default, the + * <mmap_prefix_> is not set and the mmap filename is + * ${(TMP|TEMP)}//ACE_MEM_Acceptor_(port-number)_(&stream), + * otherwise, it is <mmap_prefix_>_(port-number)_(&stream), + * <mmap_prefix_> should include _absolute_ path so the connector + * within the same host can located the mmap file. Example: + * /tmp/mmapfile. + */ + const ACE_TCHAR *mmap_prefix (void) const; + void mmap_prefix (const ACE_TCHAR *prefix); + + /** + * Change the initial MMAP buffer size (in bytes) of the MEM_Stream + * this MEM_Acceptor creates. + */ + void init_buffer_size (off_t bytes); + + /// Get the preferred signaling strategy. + ACE_MEM_IO::Signal_Strategy preferred_strategy (void) const; + + /// Set the preferred signaling strategy. + void preferred_strategy (ACE_MEM_IO::Signal_Strategy strategy); + + /// Return the local endpoint address in the referenced <ACE_Addr>. + /// Returns 0 if successful, else -1. + int get_local_addr (ACE_MEM_Addr &) const; + + /// Accessor to the mmap options. + /// @deprecated This method has been deprecated. + ACE_MEM_SAP::MALLOC_OPTIONS& malloc_options (void); + + // = Meta-type info + typedef ACE_MEM_Addr PEER_ADDR; + typedef ACE_MEM_Stream PEER_STREAM; + + /// Dump the state of an object. + void dump (void) const; + + /// Declare the dynamic allocation hooks. + ACE_ALLOC_HOOK_DECLARE; + +protected: + // = The following methods should not be accessable externally + // because MEM_Acceptor do not support their semantics. + int open (const ACE_Addr &local_sap, + int reuse_addr = 0, + int protocol_family = PF_INET, + int backlog = ACE_DEFAULT_BACKLOG, + int protocol = 0); + + int open (const ACE_Addr &local_sap, + ACE_Protocol_Info *protocolinfo, + ACE_SOCK_GROUP g, + u_long flags, + int reuse_addr, + int protocol_family, + int backlog = ACE_DEFAULT_BACKLOG, + int protocol = 0); + + int accept (ACE_SOCK_Stream &new_stream, + ACE_Addr *remote_addr = 0, + ACE_Time_Value *timeout = 0, + int restart = 1, + int reset_new_handle = 0) const; + +#if !defined (ACE_HAS_WINCE) + int accept (ACE_SOCK_Stream &new_stream, + ACE_Accept_QoS_Params qos_params, + ACE_Addr *remote_addr = 0, + ACE_Time_Value *timeout = 0, + int restart = 1, + int reset_new_handle = 0) const; +#endif // ACE_HAS_WINCE + +private: + /// The filename prefix of the created mmap files. It should + /// contains the absolute path name of the file. + ACE_TCHAR *mmap_prefix_; + + /// A cached MALLOC_OPTIONS. MEM_Accaptor use it to create the shared + /// mamory malloc upon every incoming connection. + ACE_MEM_SAP::MALLOC_OPTIONS malloc_options_; + + /// Preferred signaling strategy. + ACE_MEM_IO::Signal_Strategy preferred_strategy_; +}; + +ACE_END_VERSIONED_NAMESPACE_DECL + +#if defined (__ACE_INLINE__) +#include "ace/MEM_Acceptor.inl" +#endif /* __ACE_INLINE__ */ + +#endif /* ACE_HAS_POSITION_INDEPENDENT_POINTERS == 1 */ + +#include /**/ "ace/post.h" +#endif /* ACE_MEM_ACCEPTOR_H */ |