ACE
6.4.2
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Read/Write operations on Devices. More...
#include <DEV_IO.h>
Public Member Functions | |
ACE_DEV_IO (void) | |
Default constructor. 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... | |
Public Member Functions inherited from ACE_DEV | |
int | close (void) |
Close down the DEVICE. More... | |
void | dump (void) const |
Dump the state of an object. More... | |
int | disable (int signum) const |
Public Member Functions inherited from ACE_IO_SAP | |
~ACE_IO_SAP (void) | |
Default dtor. More... | |
int | control (int cmd, void *) const |
Interface for ioctl. More... | |
int | enable (int value) const |
int | disable (int value) const |
ACE_HANDLE | get_handle (void) const |
Get the underlying handle. More... | |
void | set_handle (ACE_HANDLE handle) |
Set the underlying handle. More... | |
void | dump (void) const |
Dump the state of an object. More... | |
Friends | |
class | ACE_DEV_Connector |
I/O operations | |
buf is the buffer to write from or receive into. len is the number of bytes to transfer. The timeout parameter in the following methods indicates how long to blocking trying to transfer data. If timeout == 0, then the call behaves as a normal send/recv call, i.e., for blocking sockets, the call will block until action is possible; for non-blocking sockets, EWOULDBLOCK will be returned if no action is immediately possible. If timeout != 0, the call will wait until the relative time specified in *timeout elapses. The "_n()" I/O methods keep looping until all the data has been transferred. These methods also work for sockets in non-blocking mode i.e., they keep looping on EWOULDBLOCK. timeout is used to make sure we keep making progress, i.e., the same timeout value is used for every I/O operation in the loop and the timeout is not counted down. The return values for the "*_n()" methods match the return values from the non "_n()" methods and are specified as follows:
On partial transfers, i.e., if any data is transferred before timeout/error/EOF, bytes_transferred will contain the number of bytes transferred. | |
typedef ACE_DEV_Addr | PEER_ADDR |
Declare the dynamic allocation hooks. More... | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
ACE_DEV_Addr | addr_ |
Address of device we are connected to. More... | |
ssize_t | recv_n (void *buf, size_t n, const ACE_Time_Value *timeout=0, size_t *bytes_transferred=0) const |
Declare the dynamic allocation hooks. More... | |
ssize_t | send (const iovec iov[], size_t n) const |
Send iovecs via <::writev>. More... | |
ssize_t | recv (iovec iov[], size_t 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... | |
void | dump (void) const |
Dump the state of an object. More... | |
int | get_local_addr (ACE_DEV_Addr &) const |
Return the local endpoint address. More... | |
int | get_remote_addr (ACE_DEV_Addr &) const |
Additional Inherited Members | |
Public Types inherited from ACE_IO_SAP | |
enum | { INVALID_HANDLE = -1 } |
Public Attributes inherited from ACE_DEV | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
Public Attributes inherited from ACE_IO_SAP | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
Protected Member Functions inherited from ACE_DEV | |
ACE_DEV (void) | |
Ensure that this class is an abstract base class. More... | |
Protected Member Functions inherited from ACE_IO_SAP | |
ACE_IO_SAP (void) | |
Ensure that ACE_IO_SAP is an abstract base class. More... | |
Read/Write operations on Devices.
typedef ACE_DEV_Addr ACE_DEV_IO::PEER_ADDR |
Declare the dynamic allocation hooks.
ACE_DEV_IO::ACE_DEV_IO | ( | void | ) |
Default constructor.
void ACE_DEV_IO::dump | ( | void | ) | const |
Dump the state of an object.
int ACE_DEV_IO::get_local_addr | ( | ACE_DEV_Addr & | addr | ) | const |
Return the local endpoint address.
int ACE_DEV_IO::get_remote_addr | ( | ACE_DEV_Addr & | addr | ) | const |
Return the address of the remotely connected peer (if there is one).
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inline |
Recv upto n bytes in buf.
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inline |
Recv iovecs via <::readv>.
ssize_t ACE_DEV_IO::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 couple 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 |
Declare the dynamic allocation hooks.
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inline |
send upto n bytes in buf.
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inline |
Send iovecs via <::writev>.
ssize_t ACE_DEV_IO::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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friend |
ACE_DEV_IO::ACE_ALLOC_HOOK_DECLARE |
Declare the dynamic allocation hooks.
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private |
Address of device we are connected to.