ACE
6.2.8
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Provides a portable bidirectional "pipe" abstraction. More...
#include <Pipe.h>
Public Member Functions | |
ACE_Pipe (void) | |
Default constructor (does nothing...). More... | |
ACE_Pipe (ACE_HANDLE handles[2]) | |
Open the pipe and initialize the handles. More... | |
ACE_Pipe (ACE_HANDLE read, ACE_HANDLE write) | |
Initialize the ACE_Pipe from the read and write handles. More... | |
~ACE_Pipe (void) | |
Default dtor. It doesn't close the handles for you. More... | |
int | open (ACE_HANDLE handles[2]) |
Open the pipe and initialize the handles. More... | |
int | open (int buffer_size=ACE_DEFAULT_MAX_SOCKET_BUFSIZ) |
Open the pipe, setting the buffer size to the maximum. More... | |
int | close (void) |
Close down the pipe HANDLEs;. More... | |
int | close_read (void) |
int | close_write (void) |
ACE_HANDLE | read_handle (void) const |
ACE_HANDLE | write_handle (void) const |
void | dump (void) const |
Dump the state of the object. More... | |
ssize_t | send (const void *buf, size_t n) const |
send upto n bytes in buf. More... | |
ssize_t | recv (void *buf, size_t n) const |
Recv upto n bytes in buf. More... | |
ssize_t | send_n (const void *buf, size_t n) const |
Send n bytes, keep trying until n are sent. More... | |
ssize_t | send_n (const ACE_Message_Block *message_block, const ACE_Time_Value *timeout=0, size_t *bytes_transferred=0) |
ssize_t | recv_n (void *buf, size_t n) const |
Recv n bytes, keep trying until n are received. More... | |
ssize_t | send (const iovec iov[], int n) const |
Send iovecs via <::writev>. More... | |
ssize_t | recv (iovec iov[], int n) const |
Recv iovecs via <::readv>. More... | |
ssize_t | send (size_t n,...) const |
ssize_t | recv (size_t n,...) const |
ssize_t | send (const void *buf, size_t n, ACE_OVERLAPPED *overlapped) const |
Send n bytes via Win32 WriteFile using overlapped I/O. More... | |
ssize_t | recv (void *buf, size_t n, ACE_OVERLAPPED *overlapped) const |
Recv n bytes via Win32 ReadFile using overlapped I/O. More... | |
ssize_t | sendv (const iovec iov[], int n) const |
Send an <iovec> of size n to the file. More... | |
ssize_t | sendv_n (const iovec iov[], int n) const |
ssize_t | recvv_n (iovec iov[], int n) const |
Receive an iovec of size n to the file. More... | |
Private Member Functions | |
int | close_handle (int which) |
Private Attributes | |
ACE_HANDLE | handles_ [2] |
Provides a portable bidirectional "pipe" abstraction.
This class is designed to work with select()-based demuxers, such as the ACE_Select_Reactor, which is why it uses sockets on Windows rather than Win32 pipes (which aren't select()'able).
ACE_Pipe::ACE_Pipe | ( | void | ) |
Default constructor (does nothing...).
ACE_Pipe::ACE_Pipe | ( | ACE_HANDLE | handles[2] | ) |
Open the pipe and initialize the handles.
ACE_Pipe::ACE_Pipe | ( | ACE_HANDLE | read, |
ACE_HANDLE | write | ||
) |
Initialize the ACE_Pipe from the read and write handles.
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inline |
Default dtor. It doesn't close the handles for you.
int ACE_Pipe::close | ( | void | ) |
Close down the pipe HANDLEs;.
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inlineprivate |
int ACE_Pipe::close_read | ( | void | ) |
int ACE_Pipe::close_write | ( | void | ) |
void ACE_Pipe::dump | ( | void | ) | const |
Dump the state of the object.
int ACE_Pipe::open | ( | ACE_HANDLE | handles[2] | ) |
Open the pipe and initialize the handles.
int ACE_Pipe::open | ( | int | buffer_size = ACE_DEFAULT_MAX_SOCKET_BUFSIZ | ) |
Open the pipe, setting the buffer size to the maximum.
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inline |
This is the "read" side of the pipe. Note, however, that processes can also write to this handle as well since pipes are bi-directional.
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inline |
Recv upto n bytes in buf.
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inline |
Recv iovecs via <::readv>.
ssize_t ACE_Pipe::recv | ( | size_t | n, |
... | |||
) | const |
This is an interface to ::readv, that doesn't use the struct iovec explicitly. The ... can be passed as an arbitrary number of (char ptr, int len) tuples. However, the count N is the *total number of trailing arguments, not a count of the number of tuple pairs!
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inline |
Recv n bytes via Win32 ReadFile using overlapped I/O.
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inline |
Recv n bytes, keep trying until n are received.
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inline |
Receive an iovec
of size n to the file.
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inline |
send upto n bytes in buf.
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inline |
Send iovecs via <::writev>.
ssize_t ACE_Pipe::send | ( | size_t | n, |
... | |||
) | const |
Send N char ptrs and int lengths. Note that the char *'s precede the ints (basically, an varargs version of writev). The count N is the *total number of trailing arguments, not a couple of the number of tuple pairs!
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inline |
Send n bytes via Win32 WriteFile using overlapped I/O.
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inline |
Send n bytes, keep trying until n are sent.
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inline |
Send all the message_blocks chained through their <next> and <cont> pointers. This call uses the underlying OS gather-write operation to reduce the domain-crossing penalty.
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inline |
Send an <iovec> of size n to the file.
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inline |
Send an iovec
of size n to the file. Will block until all bytes are sent or an error occurs.
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inline |
This is the "write" side of the pipe. Note, however, that processes can also read to this handle as well since pipes are bi-directional.
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private |