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authorcoryan <coryan@ae88bc3d-4319-0410-8dbf-d08b4c9d3795>2000-11-01 22:17:39 +0000
committercoryan <coryan@ae88bc3d-4319-0410-8dbf-d08b4c9d3795>2000-11-01 22:17:39 +0000
commit4cdff4b3e2dbc73b00e671ef638d71d6d854e0ac (patch)
tree97236ece363cff48fd287c780db4290da39b02cb /ace/CDR_Base.h
parent7b6368ec78831d127f38eb7b630c21f98faf6a83 (diff)
downloadATCD-4cdff4b3e2dbc73b00e671ef638d71d6d854e0ac.tar.gz
ChangeLogTag:Wed Nov 1 14:11:48 2000 Carlos O'Ryan <coryan@uci.edu>
Diffstat (limited to 'ace/CDR_Base.h')
-rw-r--r--ace/CDR_Base.h140
1 files changed, 74 insertions, 66 deletions
diff --git a/ace/CDR_Base.h b/ace/CDR_Base.h
index 159334dd9fb..9a8c16cccfe 100644
--- a/ace/CDR_Base.h
+++ b/ace/CDR_Base.h
@@ -1,31 +1,29 @@
// -*- C++ -*-
-//
-// $Id$
-
-// ====================================================================
-//
-// = LIBRARY
-// ACE
-//
-// = FILENAME
-// CDR_Base.h
-//
-// = DESCRIPTION
-// ACE Common Data Representation (CDR) basic types.
-//
-// The current implementation assumes that the host has 1-byte,
-// 2-byte and 4-byte integral types, and that it has single
-// precision and double precision IEEE floats.
-// Those assumptions are pretty good these days, with Crays being
-// the only known exception.
-//
-// = AUTHORS
-// Aniruddha Gokhale <gokhale@cs.wustl.edu> and Carlos O'Ryan
-// <coryan@cs.wustl.edu> for the original implementation in TAO.
-// ACE version by Jeff Parsons <parsons@cs.wustl.edu>
-// and Istvan Buki <istvan.buki@euronet.be>.
-//
-// =====================================================================
+
+//=============================================================================
+/**
+ * @file CDR_Base.h
+ *
+ * $Id$
+ *
+ * ACE Common Data Representation (CDR) basic types.
+ *
+ * The current implementation assumes that the host has 1-byte,
+ * 2-byte and 4-byte integral types, and that it has single
+ * precision and double precision IEEE floats.
+ * Those assumptions are pretty good these days, with Crays being
+ * the only known exception.
+ *
+ *
+ * @author TAO version by
+ * @author Aniruddha Gokhale <gokhale@cs.wustl.edu>
+ * @author Carlos O'Ryan<coryan@cs.wustl.edu>
+ * @author ACE version by
+ * @author Jeff Parsons <parsons@cs.wustl.edu>
+ * @author Istvan Buki <istvan.buki@euronet.be>
+ */
+//=============================================================================
+
#ifndef ACE_CDR_BASE_H
#define ACE_CDR_BASE_H
@@ -41,12 +39,14 @@
#include "ace/Basic_Types.h"
#include "ace/Message_Block.h"
+/**
+ * @class ACE_CDR
+ *
+ * @brief Keep constants and some routines common to both Output and
+ * Input CDR streams.
+ */
class ACE_Export ACE_CDR
{
- // = TITLE
- // Keep constants and some routines common to both Output and
- // Input CDR streams.
- //
public:
// = Constants defined by the CDR protocol.
// By defining as many of these constants as possible as enums we
@@ -69,30 +69,38 @@ public:
SHORT_ALIGN = 2,
LONG_ALIGN = 4,
LONGLONG_ALIGN = 8,
+ /// @note the CORBA LongDouble alignment requirements do not
+ /// match its size...
LONGDOUBLE_ALIGN = 8,
- // Note how the CORBA LongDouble alignment requirements do not
- // match its size...
+ /// Maximal CDR 1.1 alignment: "quad precision" FP (i.e. "CDR::Long
+ /// double", size as above).
MAX_ALIGNMENT = 8,
- // Maximal CDR 1.1 alignment: "quad precision" FP (i.e. "CDR::Long
- // double", size as above).
+ /// The default buffer size.
+ /**
+ * @todo We want to add options to control this
+ * default value, so this constant should be read as the default
+ * default value ;-)
+ */
DEFAULT_BUFSIZE = ACE_DEFAULT_CDR_BUFSIZE,
- // The default buffer size.
- // @@ TODO We want to add options to control this
- // default value, so this constant should be read as the default
- // default value ;-)
+ /// The buffer size grows exponentially until it reaches this size;
+ /// afterwards it grows linearly using the next constant
EXP_GROWTH_MAX = ACE_DEFAULT_CDR_EXP_GROWTH_MAX,
- // The buffer size grows exponentially until it reaches this size;
- // afterwards it grows linearly using the next constant
+ /// Once exponential growth is ruled out the buffer size increases
+ /// in chunks of this size, note that this constants have the same
+ /// value right now, but it does not need to be so.
LINEAR_GROWTH_CHUNK = ACE_DEFAULT_CDR_LINEAR_GROWTH_CHUNK
- // Once exponential growth is ruled out the buffer size increases
- // in chunks of this size, note that this constants have the same
- // value right now, but it does not need to be so.
};
+ /**
+ * Do byte swapping for each basic IDL type size. There exist only
+ * routines to put byte, halfword (2 bytes), word (4 bytes),
+ * doubleword (8 bytes) and quadword (16 byte); because those are
+ * the IDL basic type sizes.
+ */
static void swap_2 (const char *orig, char *target);
static void swap_4 (const char *orig, char *target);
static void swap_8 (const char *orig, char *target);
@@ -109,39 +117,39 @@ public:
static void swap_16_array (const char *orig,
char *target,
size_t length);
- // Do byte swapping for each basic IDL type size. There exist only
- // routines to put byte, halfword (2 bytes), word (4 bytes),
- // doubleword (8 bytes) and quadword (16 byte); because those are
- // the IDL basic type sizes.
+ /// Align the message block to ACE_CDR::MAX_ALIGNMENT,
+ /// set by the CORBA spec at 8 bytes.
static void mb_align (ACE_Message_Block *mb);
- // Align the message block to ACE_CDR::MAX_ALIGNMENT,
- // set by the CORBA spec at 8 bytes.
+ /**
+ * Compute the size of the smallest buffer that can contain at least
+ * <minsize> bytes.
+ * To understand how a "best fit" is computed look at the
+ * algorithm in the code.
+ * Basically the buffers grow exponentially, up to a certain point,
+ * then the buffer size grows linearly.
+ * The advantage of this algorithm is that is rapidly grows to a
+ * large value, but does not explode at the end.
+ */
static size_t first_size (size_t minsize);
- // Compute the size of the smallest buffer that can contain at least
- // <minsize> bytes.
- // To understand how a "best fit" is computed look at the
- // algorithm in the code.
- // Basically the buffers grow exponentially, up to a certain point,
- // then the buffer size grows linearly.
- // The advantage of this algorithm is that is rapidly grows to a
- // large value, but does not explode at the end.
+ /// Compute not the smallest, but the second smallest buffer that
+ /// will fir <minsize> bytes.
static size_t next_size (size_t minsize);
- // Compute not the smallest, but the second smallest buffer that
- // will fir <minsize> bytes.
+ /**
+ * Increase the capacity of mb to contain at least <minsize> bytes.
+ * If <minsize> is zero the size is increased by an amount at least
+ * large enough to contain any of the basic IDL types. Return -1 on
+ * failure, 0 on success.
+ */
static int grow (ACE_Message_Block *mb, size_t minsize);
- // Increase the capacity of mb to contain at least <minsize> bytes.
- // If <minsize> is zero the size is increased by an amount at least
- // large enough to contain any of the basic IDL types. Return -1 on
- // failure, 0 on success.
+ /// Copy a message block chain into a single message block,
+ /// preserving the alignment of the original stream.
static void consolidate (ACE_Message_Block *dst,
const ACE_Message_Block *src);
- // Copy a message block chain into a single message block,
- // preserving the alignment of the original stream.
static size_t total_length (const ACE_Message_Block *begin,
const ACE_Message_Block *end);