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https://github.com/mod-playerbots/azerothcore-wotlk.git
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145 lines
3.8 KiB
C++
145 lines
3.8 KiB
C++
#include "ace/FILE_IO.h"
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#include "ace/Log_Category.h"
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#include "ace/OS_NS_sys_stat.h"
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#include "ace/OS_Memory.h"
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#include "ace/Truncate.h"
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#if !defined (__ACE_INLINE__)
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#include "ace/FILE_IO.inl"
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#endif /* __ACE_INLINE__ */
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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ACE_ALLOC_HOOK_DEFINE(ACE_FILE_IO)
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void
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ACE_FILE_IO::dump (void) const
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{
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#if defined (ACE_HAS_DUMP)
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ACE_TRACE ("ACE_FILE_IO::dump");
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ACELIB_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
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this->addr_.dump ();
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ACELIB_DEBUG ((LM_DEBUG, ACE_END_DUMP));
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#endif /* ACE_HAS_DUMP */
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}
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// Simple-minded do nothing constructor.
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ACE_FILE_IO::ACE_FILE_IO (void)
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{
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ACE_TRACE ("ACE_FILE_IO::ACE_FILE_IO");
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}
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// Send N char *ptrs and int lengths. Note that the char *'s precede
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// the ints (basically, an varargs version of writev). The count N is
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// the *total* number of trailing arguments, *not* a couple of the
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// number of tuple pairs!
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ssize_t
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ACE_FILE_IO::send (size_t n, ...) const
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{
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ACE_TRACE ("ACE_FILE_IO::send");
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va_list argp;
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int total_tuples = ACE_Utils::truncate_cast<int> (n / 2);
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iovec *iovp = 0;
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#if defined (ACE_HAS_ALLOCA)
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iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
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#else
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ACE_NEW_RETURN (iovp,
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iovec[total_tuples],
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-1);
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#endif /* !defined (ACE_HAS_ALLOCA) */
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va_start (argp, n);
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for (int i = 0; i < total_tuples; i++)
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{
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iovp[i].iov_base = va_arg (argp, char *);
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iovp[i].iov_len = va_arg (argp, int);
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}
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ssize_t result = ACE_OS::writev (this->get_handle (),
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iovp,
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total_tuples);
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#if !defined (ACE_HAS_ALLOCA)
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delete [] iovp;
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#endif /* !defined (ACE_HAS_ALLOCA) */
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va_end (argp);
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return result;
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}
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// This is basically an interface to ACE_OS::readv, that doesn't use
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// the struct iovec explicitly. The ... can be passed as an arbitrary
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// number of (char *ptr, int len) tuples. However, the count N is the
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// *total* number of trailing arguments, *not* a couple of the number
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// of tuple pairs!
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ssize_t
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ACE_FILE_IO::recv (size_t n, ...) const
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{
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ACE_TRACE ("ACE_FILE_IO::recv");
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va_list argp;
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int total_tuples = ACE_Utils::truncate_cast<int> (n / 2);
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iovec *iovp = 0;
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#if defined (ACE_HAS_ALLOCA)
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iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
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#else
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ACE_NEW_RETURN (iovp,
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iovec[total_tuples],
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-1);
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#endif /* !defined (ACE_HAS_ALLOCA) */
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va_start (argp, n);
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for (int i = 0; i < total_tuples; i++)
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{
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iovp[i].iov_base = va_arg (argp, char *);
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iovp[i].iov_len = va_arg (argp, int);
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}
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ssize_t const result = ACE_OS::readv (this->get_handle (),
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iovp,
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total_tuples);
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#if !defined (ACE_HAS_ALLOCA)
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delete [] iovp;
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#endif /* !defined (ACE_HAS_ALLOCA) */
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va_end (argp);
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return result;
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}
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// Allows a client to read from a file without having to provide a
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// buffer to read. This method determines how much data is in the
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// file, allocates a buffer of this size, reads in the data, and
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// returns the number of bytes read.
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ssize_t
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ACE_FILE_IO::recvv (iovec *io_vec)
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{
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ACE_TRACE ("ACE_FILE_IO::recvv");
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io_vec->iov_base = 0;
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ACE_OFF_T const length = ACE_OS::filesize (this->get_handle ());
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if (length > 0)
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{
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// Restrict to max size we can record in iov_len.
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size_t len = ACE_Utils::truncate_cast<u_long> (length);
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ACE_NEW_RETURN (io_vec->iov_base,
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char[len],
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-1);
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io_vec->iov_len = static_cast<u_long> (this->recv_n (io_vec->iov_base,
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len));
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return io_vec->iov_len;
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}
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else
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{
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return ACE_Utils::truncate_cast<ssize_t> (length);
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}
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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