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275 lines
9.5 KiB
C
275 lines
9.5 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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** File: pprio.h
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**
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** Description: Private definitions for I/O related structures
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*/
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#ifndef pprio_h___
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#define pprio_h___
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#include "prtypes.h"
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#include "prio.h"
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PR_BEGIN_EXTERN_C
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/************************************************************************/
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/************************************************************************/
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#ifdef _WIN64
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typedef __int64 PROsfd;
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#else
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typedef PRInt32 PROsfd;
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#endif
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/* Return the method tables for files, tcp sockets and udp sockets */
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NSPR_API(const PRIOMethods*) PR_GetFileMethods(void);
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NSPR_API(const PRIOMethods*) PR_GetTCPMethods(void);
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NSPR_API(const PRIOMethods*) PR_GetUDPMethods(void);
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NSPR_API(const PRIOMethods*) PR_GetPipeMethods(void);
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/*
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** Convert a NSPR socket handle to a native socket handle.
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**
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** Using this function makes your code depend on the properties of the
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** current NSPR implementation, which may change (although extremely
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** unlikely because of NSPR's backward compatibility requirement). Avoid
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** using it if you can.
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**
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** If you use this function, you need to understand what NSPR does to
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** the native handle. For example, NSPR puts native socket handles in
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** non-blocking mode or associates them with an I/O completion port (the
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** WINNT build configuration only). Your use of the native handle should
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** not interfere with NSPR's use of the native handle. If your code
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** changes the configuration of the native handle, (e.g., changes it to
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** blocking or closes it), NSPR will not work correctly.
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*/
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NSPR_API(PROsfd) PR_FileDesc2NativeHandle(PRFileDesc *);
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NSPR_API(void) PR_ChangeFileDescNativeHandle(PRFileDesc *, PROsfd);
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NSPR_API(PRFileDesc*) PR_AllocFileDesc(PROsfd osfd,
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const PRIOMethods *methods);
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NSPR_API(void) PR_FreeFileDesc(PRFileDesc *fd);
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/*
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** Import an existing OS file to NSPR.
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*/
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NSPR_API(PRFileDesc*) PR_ImportFile(PROsfd osfd);
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NSPR_API(PRFileDesc*) PR_ImportPipe(PROsfd osfd);
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NSPR_API(PRFileDesc*) PR_ImportTCPSocket(PROsfd osfd);
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NSPR_API(PRFileDesc*) PR_ImportUDPSocket(PROsfd osfd);
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/*
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*************************************************************************
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* FUNCTION: PR_CreateSocketPollFd
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* DESCRIPTION:
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* Create a PRFileDesc wrapper for a native socket handle, for use with
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* PR_Poll only
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* INPUTS:
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* None
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* OUTPUTS:
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* None
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* RETURN: PRFileDesc*
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* Upon successful completion, PR_CreateSocketPollFd returns a pointer
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* to the PRFileDesc created for the native socket handle
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* Returns a NULL pointer if the create of a new PRFileDesc failed
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*
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**************************************************************************
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*/
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NSPR_API(PRFileDesc*) PR_CreateSocketPollFd(PROsfd osfd);
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/*
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*************************************************************************
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* FUNCTION: PR_DestroySocketPollFd
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* DESCRIPTION:
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* Destroy the PRFileDesc wrapper created by PR_CreateSocketPollFd
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* INPUTS:
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* None
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* OUTPUTS:
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* None
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* RETURN: PRFileDesc*
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* Upon successful completion, PR_DestroySocketPollFd returns
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* PR_SUCCESS, else PR_FAILURE
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*
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**************************************************************************
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*/
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NSPR_API(PRStatus) PR_DestroySocketPollFd(PRFileDesc *fd);
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/*
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** Macros for PR_Socket
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**
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** Socket types: PR_SOCK_STREAM, PR_SOCK_DGRAM
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*/
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#ifdef WIN32
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#define PR_SOCK_STREAM 1
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#define PR_SOCK_DGRAM 2
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#else /* WIN32 */
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#define PR_SOCK_STREAM SOCK_STREAM
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#define PR_SOCK_DGRAM SOCK_DGRAM
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#endif /* WIN32 */
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/*
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** Create a new Socket; this function is obsolete.
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*/
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NSPR_API(PRFileDesc*) PR_Socket(PRInt32 domain, PRInt32 type, PRInt32 proto);
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/* FUNCTION: PR_LockFile
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** DESCRIPTION:
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** Lock a file for exclusive access.
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** RETURNS:
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** PR_SUCCESS when the lock is held
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** PR_FAILURE otherwise
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*/
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NSPR_API(PRStatus) PR_LockFile(PRFileDesc *fd);
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/* FUNCTION: PR_TLockFile
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** DESCRIPTION:
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** Test and Lock a file for exclusive access. Do not block if the
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** file cannot be locked immediately.
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** RETURNS:
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** PR_SUCCESS when the lock is held
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** PR_FAILURE otherwise
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*/
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NSPR_API(PRStatus) PR_TLockFile(PRFileDesc *fd);
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/* FUNCTION: PR_UnlockFile
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** DESCRIPTION:
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** Unlock a file which has been previously locked successfully by this
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** process.
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** RETURNS:
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** PR_SUCCESS when the lock is released
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** PR_FAILURE otherwise
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*/
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NSPR_API(PRStatus) PR_UnlockFile(PRFileDesc *fd);
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/*
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** Emulate acceptread by accept and recv.
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*/
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NSPR_API(PRInt32) PR_EmulateAcceptRead(PRFileDesc *sd, PRFileDesc **nd,
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PRNetAddr **raddr, void *buf, PRInt32 amount, PRIntervalTime timeout);
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/*
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** Emulate sendfile by reading from the file and writing to the socket.
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** The file is memory-mapped if memory-mapped files are supported.
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*/
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NSPR_API(PRInt32) PR_EmulateSendFile(
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PRFileDesc *networkSocket, PRSendFileData *sendData,
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PRTransmitFileFlags flags, PRIntervalTime timeout);
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#ifdef WIN32
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/* FUNCTION: PR_NTFast_AcceptRead
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** DESCRIPTION:
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** NT has the notion of an "accept context", which is only needed in
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** order to make certain calls. By default, a socket connected via
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** AcceptEx can only do a limited number of things without updating
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** the acceptcontext. The generic version of PR_AcceptRead always
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** updates the accept context. This version does not.
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**/
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NSPR_API(PRInt32) PR_NTFast_AcceptRead(PRFileDesc *sd, PRFileDesc **nd,
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PRNetAddr **raddr, void *buf, PRInt32 amount, PRIntervalTime t);
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typedef void (*_PR_AcceptTimeoutCallback)(void *);
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/* FUNCTION: PR_NTFast_AcceptRead_WithTimeoutCallback
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** DESCRIPTION:
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** The AcceptEx call combines the accept with the read function. However,
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** our daemon threads need to be able to wakeup and reliably flush their
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** log buffers if the Accept times out. However, with the current blocking
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** interface to AcceptRead, there is no way for us to timeout the Accept;
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** this is because when we timeout the Read, we can close the newly
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** socket and continue; but when we timeout the accept itself, there is no
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** new socket to timeout. So instead, this version of the function is
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** provided. After the initial timeout period elapses on the accept()
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** portion of the function, it will call the callback routine and then
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** continue the accept. If the timeout occurs on the read, it will
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** close the connection and return error.
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*/
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NSPR_API(PRInt32) PR_NTFast_AcceptRead_WithTimeoutCallback(
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PRFileDesc *sd,
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PRFileDesc **nd,
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PRNetAddr **raddr,
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void *buf,
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PRInt32 amount,
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PRIntervalTime t,
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_PR_AcceptTimeoutCallback callback,
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void *callback_arg);
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/* FUNCTION: PR_NTFast_Accept
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** DESCRIPTION:
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** NT has the notion of an "accept context", which is only needed in
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** order to make certain calls. By default, a socket connected via
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** AcceptEx can only do a limited number of things without updating
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** the acceptcontext. The generic version of PR_Accept always
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** updates the accept context. This version does not.
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**/
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NSPR_API(PRFileDesc*) PR_NTFast_Accept(PRFileDesc *fd, PRNetAddr *addr,
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PRIntervalTime timeout);
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/* FUNCTION: PR_NTFast_Update
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** DESCRIPTION:
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** For sockets accepted with PR_NTFast_Accept or PR_NTFastAcceptRead,
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** this function will update the accept context for those sockets,
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** so that the socket can make general purpose socket calls.
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** Without calling this, the only operations supported on the socket
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** Are PR_Read, PR_Write, PR_Transmitfile, and PR_Close.
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*/
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NSPR_API(void) PR_NTFast_UpdateAcceptContext(PRFileDesc *acceptSock,
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PRFileDesc *listenSock);
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/* FUNCTION: PR_NT_CancelIo
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** DESCRIPTION:
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** Cancel IO operations on fd.
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*/
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NSPR_API(PRStatus) PR_NT_CancelIo(PRFileDesc *fd);
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#endif /* WIN32 */
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PR_END_EXTERN_C
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#endif /* pprio_h___ */
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