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#include "ace/Log_Msg_IPC.h"
#include "ace/Log_Record.h"
#include "ace/CDR_Stream.h"
#include "ace/Truncate.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_Log_Msg_IPC::ACE_Log_Msg_IPC ()
{
}
ACE_Log_Msg_IPC::~ACE_Log_Msg_IPC ()
{
(void) this->close ();
}
ACE_ALLOC_HOOK_DEFINE(ACE_Log_Msg_IPC)
int
ACE_Log_Msg_IPC::open (const ACE_TCHAR *logger_key)
{
ACE_LOG_MSG_IPC_CONNECTOR con;
return con.connect (this->message_queue_,
ACE_LOG_MSG_IPC_ADDR (logger_key));
}
int
ACE_Log_Msg_IPC::reset ()
{
if (this->message_queue_.get_handle () != ACE_INVALID_HANDLE)
{
// If we don't do this, handles aren't reused on Win32 and the
// server eventually crashes!
return this->close ();
}
return 0;
}
int
ACE_Log_Msg_IPC::close ()
{
return this->message_queue_.close ();
}
ssize_t
ACE_Log_Msg_IPC::log (ACE_Log_Record &log_record)
{
// Serialize the log record using a CDR stream, allocate enough
// space for the complete <ACE_Log_Record>.
size_t const max_payload_size =
4 // type
+ 4 // pid
+ 12 // timestamp
+ 4 // process id
+ 4 // data length
#if defined (ACE_USES_WCHAR)
+ (log_record.msg_data_len () * ACE_OutputCDR::wchar_maxbytes()) // message
#else
+ log_record.msg_data_len () // message
#endif
+ ACE_CDR::MAX_ALIGNMENT; // padding;
// Insert contents of <log_record> into payload stream.
ACE_OutputCDR payload (max_payload_size);
if (!(payload << log_record))
return -1;
// Get the number of bytes used by the CDR stream. If it becomes desireable
// to support payloads more than 4GB, this field will need to be changed
// to a 64-bit value.
ACE_CDR::ULong const length =
ACE_Utils::truncate_cast<ACE_CDR::ULong> (payload.total_length ());
// Send a header so the receiver can determine the byte order and
// size of the incoming CDR stream.
ACE_OutputCDR header (ACE_CDR::MAX_ALIGNMENT + 8);
if (!(header << ACE_OutputCDR::from_boolean (ACE_CDR_BYTE_ORDER)))
return -1;
// Store the size of the payload that follows
if (!(header << ACE_CDR::ULong (length)))
return -1;
// Use an iovec to send both buffer and payload simultaneously.
iovec iov[2];
iov[0].iov_base = header.begin ()->rd_ptr ();
iov[0].iov_len = 8;
iov[1].iov_base = payload.begin ()->rd_ptr ();
iov[1].iov_len = length;
#if (ACE_HAS_STREAM_LOG_MSG_IPC == 1)
// Use the <putpmsg> API if supported to ensure correct message
// queueing according to priority.
ACE_Str_Buf header_msg (static_cast<void *> (header.begin ()->rd_ptr ()),
static_cast<int> (8));
ACE_Str_Buf payload_msg (static_cast<void *> (payload.begin ()->rd_ptr ()),
static_cast<int> (length));
return this->message_queue_.send (&header_msg,
&payload_msg,
static_cast<int> (log_record.priority ()),
MSG_BAND);
#else
// We're running over sockets, so send header and payload
// efficiently using "gather-write".
return this->message_queue_.sendv_n (iov, 2);
#endif /* ACE_HAS_STREAM_LOG_MSG_IPC */
}
ACE_END_VERSIONED_NAMESPACE_DECL
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