/usr/include/omniORB4/cdrStream.h is in libomniorb4-dev 4.2.2-0.8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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1422 1423 1424 | // -*- Mode: C++; -*-
// Package : omniORB
// cdrStream.h Created on: 11/1/99
// Author : Sai Lai Lo (sll)
//
// Copyright (C) 2003-2013 Apasphere Ltd
// Copyright (C) 1999 AT&T Laboratories, Cambridge
//
// This file is part of the omniORB library
//
// The omniORB library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library. If not, see http://www.gnu.org/licenses/
//
//
// Description:
// *** PROPRIETARY INTERFACE ***
//
#ifndef __CDRSTREAM_H__
#define __CDRSTREAM_H__
#include <limits.h>
class cdrStream;
class cdrStreamAdapter;
class cdrValueChunkStream;
OMNI_NAMESPACE_BEGIN(omni)
class ValueIndirectionTracker {
public:
virtual ~ValueIndirectionTracker();
};
OMNI_NAMESPACE_END(omni)
//
// cdrStream abstract base class
class cdrStream {
public:
cdrStream();
virtual ~cdrStream();
//
// Byte swapping functions
static inline _CORBA_Short byteSwap(_CORBA_Short s) {
return (((s & 0xff00) >> 8 |
(s & 0x00ff) << 8));
}
static inline _CORBA_UShort byteSwap(_CORBA_UShort s) {
return (((s & 0xff00) >> 8 |
(s & 0x00ff) << 8));
}
static inline _CORBA_Long byteSwap(_CORBA_Long l) {
return (((l & 0xff000000) >> 24) |
((l & 0x00ff0000) >> 8) |
((l & 0x0000ff00) << 8) |
((l & 0x000000ff) << 24));
}
static inline _CORBA_ULong byteSwap(_CORBA_ULong l) {
return (((l & 0xff000000) >> 24) |
((l & 0x00ff0000) >> 8) |
((l & 0x0000ff00) << 8) |
((l & 0x000000ff) << 24));
}
#ifdef HAS_LongLong
static inline _CORBA_LongLong byteSwap(_CORBA_LongLong l) {
return (((l & _CORBA_LONGLONG_CONST(0xff00000000000000)) >> 56) |
((l & _CORBA_LONGLONG_CONST(0x00ff000000000000)) >> 40) |
((l & _CORBA_LONGLONG_CONST(0x0000ff0000000000)) >> 24) |
((l & _CORBA_LONGLONG_CONST(0x000000ff00000000)) >> 8) |
((l & _CORBA_LONGLONG_CONST(0x00000000ff000000)) << 8) |
((l & _CORBA_LONGLONG_CONST(0x0000000000ff0000)) << 24) |
((l & _CORBA_LONGLONG_CONST(0x000000000000ff00)) << 40) |
((l & _CORBA_LONGLONG_CONST(0x00000000000000ff)) << 56));
}
static inline _CORBA_ULongLong byteSwap(_CORBA_ULongLong l) {
return (((l & _CORBA_LONGLONG_CONST(0xff00000000000000)) >> 56) |
((l & _CORBA_LONGLONG_CONST(0x00ff000000000000)) >> 40) |
((l & _CORBA_LONGLONG_CONST(0x0000ff0000000000)) >> 24) |
((l & _CORBA_LONGLONG_CONST(0x000000ff00000000)) >> 8) |
((l & _CORBA_LONGLONG_CONST(0x00000000ff000000)) << 8) |
((l & _CORBA_LONGLONG_CONST(0x0000000000ff0000)) << 24) |
((l & _CORBA_LONGLONG_CONST(0x000000000000ff00)) << 40) |
((l & _CORBA_LONGLONG_CONST(0x00000000000000ff)) << 56));
}
#endif
//
// Marshalling methods : char, wchar, bool, octet
inline void marshalChar(_CORBA_Char a) {
pd_ncs_c->marshalChar(*this,pd_tcs_c,a);
}
inline _CORBA_Char unmarshalChar() {
return pd_ncs_c->unmarshalChar(*this,pd_tcs_c);
}
inline void marshalWChar(_CORBA_WChar a) {
pd_ncs_w->marshalWChar(*this,pd_tcs_w,a);
}
inline _CORBA_WChar unmarshalWChar() {
return pd_ncs_w->unmarshalWChar(*this,pd_tcs_w);
}
inline void marshalOctet(_CORBA_Octet a) {
// No need to align here
omni::ptr_arith_t p1 = outMkr();
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_Octet);
if ((void*)p2 <= pd_outb_end) {
pd_outb_mkr = (void*)p2;
*((_CORBA_Octet*)p1) = a;
}
else {
reserveAndMarshalOctet(a);
}
}
inline _CORBA_Octet unmarshalOctet() {
_CORBA_Octet a;
omni::ptr_arith_t p1 = inMkr();
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_Octet);
if ((void*)p2 <= pd_inb_end) {
pd_inb_mkr = (void*)p2;
a = *((_CORBA_Octet*)p1);
}
else {
a = fetchAndUnmarshalOctet();
}
return a;
}
inline void marshalBoolean(_CORBA_Boolean b) {
_CORBA_Octet o = b ? 1 : 0;
marshalOctet(o);
}
inline _CORBA_Boolean unmarshalBoolean() {
_CORBA_Octet o = unmarshalOctet();
#ifdef HAS_Cplusplus_Bool
return o ? true : false;
#else
return (_CORBA_Boolean)o;
#endif
}
//
// Marshalling methods : integer types
#define intMarshalFns(type,align) \
inline void marshal ## type(_CORBA_ ## type arg) {\
omni::ptr_arith_t p1 = outMkr(omni::align);\
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_ ## type);\
if ((void*)p2 <= pd_outb_end) {\
pd_outb_mkr = (void*) p2;\
if (!pd_marshal_byte_swap) {\
*((_CORBA_ ## type*)p1) = arg;\
}\
else {\
*((_CORBA_ ## type*)p1) = byteSwap(arg);\
}\
}\
else {\
reserveAndMarshal ## type(arg);\
}\
} \
inline _CORBA_ ## type unmarshal ## type() { \
_CORBA_ ## type arg;\
omni::ptr_arith_t p1 = inMkr(omni::align);\
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_ ## type);\
if ((void*)p2 <= pd_inb_end) {\
pd_inb_mkr = (void*) p2;\
if (!pd_unmarshal_byte_swap) {\
arg = *((_CORBA_ ## type*)p1);\
}\
else {\
arg = byteSwap(*((_CORBA_ ## type*)p1));\
}\
}\
else {\
arg = fetchAndUnmarshal ## type();\
}\
return arg; \
}
intMarshalFns(Short, ALIGN_2)
intMarshalFns(UShort, ALIGN_2)
intMarshalFns(Long, ALIGN_4)
intMarshalFns(ULong, ALIGN_4)
#ifdef HAS_LongLong
intMarshalFns(LongLong, ALIGN_8)
intMarshalFns(ULongLong, ALIGN_8)
#endif
#undef intMarshalFns
//
// Marshalling methods : float types
#ifndef NO_FLOAT
# ifndef USING_PROXY_FLOAT
inline void marshalFloat(_CORBA_Float a) {
union { _CORBA_Float a; _CORBA_ULong l; } u;
u.a = a;
marshalULong(u.l);
}
inline _CORBA_Float unmarshalFloat() {
union { _CORBA_Float a; _CORBA_ULong l; } u;
u.l = unmarshalULong();
return u.a;
}
# if defined(HAS_LongLong) && !defined(OMNI_MIXED_ENDIAN_DOUBLE)
inline void marshalDouble(_CORBA_Double a) {
union { _CORBA_Double a; _CORBA_ULongLong l; } u;
u.a = a;
marshalULongLong(u.l);
}
inline _CORBA_Double unmarshalDouble() {
union { _CORBA_Double a; _CORBA_ULongLong l; } u;
u.l = unmarshalULongLong();
return u.a;
}
# else // No longlong or mixed endian
inline void marshalDouble(_CORBA_Double a) {
omni::ptr_arith_t p1 = outMkr(omni::ALIGN_8);
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_Double);
if ((void*)p2 <= pd_outb_end) {
pd_outb_mkr = (void*) p2;
struct LongArray2 { _CORBA_ULong l[2]; };
union { _CORBA_Double a; LongArray2 l; } u;
u.a = a;
#ifdef OMNI_MIXED_ENDIAN_DOUBLE
{
_CORBA_ULong v = u.l.l[0];
u.l.l[0] = u.l.l[1];
u.l.l[1] = v;
}
#endif
if (!pd_marshal_byte_swap) {
*((LongArray2*)p1) = u.l;
}
else {
LongArray2 m;
m.l[0] = byteSwap(u.l.l[1]);
m.l[1] = byteSwap(u.l.l[0]);
*((LongArray2*)p1) = m;
}
}
else {
reserveAndMarshalDouble(a);
}
}
inline _CORBA_Double unmarshalDouble() {
omni::ptr_arith_t p1 = inMkr(omni::ALIGN_8);
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_Double);
if ((void*)p2 <= pd_inb_end) {
pd_inb_mkr = (void*) p2;
struct LongArray2 { _CORBA_ULong l[2]; };
union { _CORBA_Double a; LongArray2 l; } u;
if (!pd_unmarshal_byte_swap) {
u.l = *((LongArray2*)p1);
}
else {
LongArray2 m = *((LongArray2*)p1);
u.l.l[0] = byteSwap(m.l[1]);
u.l.l[1] = byteSwap(m.l[0]);
}
#ifdef OMNI_MIXED_ENDIAN_DOUBLE
{
_CORBA_ULong v = u.l.l[0];
u.l.l[0] = u.l.l[1];
u.l.l[1] = v;
}
#endif
return u.a;
}
else {
return fetchAndUnmarshalDouble();
}
}
# endif // No longlong or mixed endian
# else // USING_PROXY_FLOAT
// _CORBA_Float and _CORBA_Double are classes with constructors, so
// we cannot use a union to convert it to an array of ulong. We use
// reinterpret_cast instead.
inline void marshalFloat(_CORBA_Float a) {
_CORBA_ULong l = OMNI_REINTERPRET_CAST(_CORBA_ULong, a);
marshalULong(l);
}
inline _CORBA_Float unmarshalFloat() {
_CORBA_ULong l = unmarshalULong();
return OMNI_REINTERPRET_CAST(_CORBA_Float, l);
}
inline void marshalDouble(_CORBA_Double a) {
omni::ptr_arith_t p1 = outMkr(omni::ALIGN_8);
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_Double);
if ((void*)p2 <= pd_outb_end) {
pd_outb_mkr = (void*) p2;
struct LongArray2 { _CORBA_ULong l[2]; };
LongArray2 l = OMNI_REINTERPRET_CAST(LongArray2, a);
if (!pd_marshal_byte_swap) {
*((LongArray2*)p1) = l;
}
else {
LongArray2 m;
m[0] = byteSwap(l[1]);
m[1] = byteSwap(l[0]);
*((LongArray2*)p1) = m;
}
}
else {
reserveAndMarshalDouble(a);
}
}
inline _CORBA_Double unmarshalDouble() {
omni::ptr_arith_t p1 = inMkr(omni::ALIGN_8);
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_Double);
if ((void*)p2 <= pd_inb_end) {
pd_inb_mkr = (void*) p2;
struct LongArray2 { _CORBA_ULong l[2]; };
LongArray2 l;
if (!pd_unmarshal_byte_swap) {
l = *((LongArray2*)p1);
}
else {
LongArray2 m = *((LongArray2*)p1);
l.l[0] = byteSwap(m.l[1]);
l.l[1] = byteSwap(m.l[0]);
}
return OMNI_REINTERPRET_CAST(_CORBA_Double, l);
}
else {
return fetchAndUnmarshalDouble();
}
}
# endif // USING_PROXY_FLOAT
# if defined(HAS_LongDouble) && defined(HAS_LongLong)
// We only support LongDouble if we also have LongLong.
# if SIZEOF_LONG_DOUBLE == 16
inline void marshalLongDouble(_CORBA_LongDouble a) {
omni::ptr_arith_t p1 = outMkr(omni::ALIGN_8);
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_LongDouble);
if ((void*)p2 <= pd_outb_end) {
pd_outb_mkr = (void*) p2;
struct LongLongArray2 { _CORBA_ULongLong l[2]; };
union { _CORBA_LongDouble a; LongLongArray2 l; } u;
u.a = a;
if (!pd_marshal_byte_swap) {
*((LongLongArray2*)p1) = u.l;
}
else {
LongLongArray2 m;
m.l[0] = byteSwap(u.l.l[1]);
m.l[1] = byteSwap(u.l.l[0]);
*((LongLongArray2*)p1) = m;
}
}
else {
reserveAndMarshalLongDouble(a);
}
}
inline _CORBA_LongDouble unmarshalLongDouble() {
omni::ptr_arith_t p1 = inMkr(omni::ALIGN_8);
omni::ptr_arith_t p2 = p1 + sizeof(_CORBA_LongDouble);
if ((void*)p2 <= pd_inb_end) {
pd_inb_mkr = (void*) p2;
struct LongLongArray2 { _CORBA_ULongLong l[2]; };
union { _CORBA_LongDouble a; LongLongArray2 l; } u;
if (!pd_unmarshal_byte_swap) {
u.l = *((LongLongArray2*)p1);
}
else {
LongLongArray2 m = *((LongLongArray2*)p1);
u.l.l[0] = byteSwap(m.l[1]);
u.l.l[1] = byteSwap(m.l[0]);
}
return u.a;
}
else {
return fetchAndUnmarshalLongDouble();
}
}
# else
// Code for long double < 16 bytes is too painful to put inline
void marshalLongDouble(_CORBA_LongDouble a);
_CORBA_LongDouble unmarshalLongDouble();
# endif
# endif // HAS_LongDouble
#endif // NO_FLOAT
//
// Marshalling methods : string types
inline void marshalString(const char* s,int bounded=0) {
OMNIORB_USER_CHECK(s);
pd_ncs_c->marshalString(*this,pd_tcs_c,bounded,0,s);
}
inline char* unmarshalString(int bounded=0) {
char* s;
pd_ncs_c->unmarshalString(*this,pd_tcs_c,bounded,s);
return s;
}
_CORBA_ULong marshalRawString(const char* s);
// Marshal a raw string, with no code set conversion.
char* unmarshalRawString();
// Unmarshal a raw string.
inline void marshalWString(const _CORBA_WChar* s,int bounded=0) {
OMNIORB_USER_CHECK(s);
pd_ncs_w->marshalWString(*this,pd_tcs_w,bounded,
_CORBA_WString_helper::len(s),s);
}
inline _CORBA_WChar* unmarshalWString(int bounded=0) {
_CORBA_WChar* s;
pd_ncs_w->unmarshalWString(*this,pd_tcs_w,bounded,s);
return s;
}
//
// Pure virtual functions
virtual void put_octet_array(const _CORBA_Octet* b, int size,
omni::alignment_t align=omni::ALIGN_1) = 0;
// Align output then put array of octets.
// <size> must be a multiple of <align>.
// For instance, if <align> == omni::ALIGN_8 then <size> % 8 == 0.
inline void put_small_octet_array(const _CORBA_Octet* b, int size) {
omni::ptr_arith_t p1 = (omni::ptr_arith_t)pd_outb_mkr;
omni::ptr_arith_t p2 = p1 + size;
if ((void*)p2 <= pd_outb_end) {
memcpy(pd_outb_mkr, b, size);
pd_outb_mkr = (void*)p2;
}
else {
put_octet_array(b, size);
}
}
// Put a small octet array which must have ALIGN_1. Since it is
// small, we expect it to fit in the stream's current buffer without
// having to allocate more space.
virtual void get_octet_array(_CORBA_Octet* b, int size,
omni::alignment_t align=omni::ALIGN_1) = 0;
// Get array of octets.
virtual void skipInput(_CORBA_ULong size) = 0;
// Skip <size> bytes from the input stream.
virtual _CORBA_Boolean checkInputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1) = 0;
// Return true if the input stream contains data for at least
// <nitems> of size <itemSize>. The initial alignment of the data
// starts at <align>. Return false otherwise.
virtual _CORBA_ULong currentInputPtr() const = 0;
// Return a value that represents the position of the next byte in
// the input stream. Later bytes in the stream has a higher return
// value. The absolute value of the return value has no meaning.
// The only use of this function is to compute the distance between
// two bytes in the stream.
virtual _CORBA_ULong currentOutputPtr() const = 0;
// Return a value that represents the position of the next byte in
// the output stream. Later bytes in the stream have a higher return
// value. The absolute value of the return value has no meaning.
// The only use of this function is to compute the distance between
// two bytes in the stream.
virtual _CORBA_Boolean checkOutputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1) = 0;
// Return true if data of at least <nitems> of size <itemSize> can
// be inserted to the output stream. The initial alignment of the
// data starts at <align>. Return false otherwise.
virtual void copy_to(cdrStream&,int size,
omni::alignment_t align=omni::ALIGN_1);
// From this stream, copy <size> bytes to the argument stream.
// The initial alignment starts at <align>.
// Derived classes may provided more efficent implementation than the
// default.
inline void alignInput(omni::alignment_t align)
// Align the buffer of the input stream to <align>.
{
again:
omni::ptr_arith_t p1 = inMkr(align);
if ((void*)p1 > pd_inb_end) {
fetchInputData(align,0);
goto again;
}
pd_inb_mkr = (void*)p1;
}
inline void alignOutput(omni::alignment_t align)
// Align the buffer of the output stream to <align>.
{
again:
omni::ptr_arith_t p1 = outMkr(align);
if ((void*)p1 > pd_outb_end) {
if (reserveOutputSpaceForPrimitiveType(align,0))
goto again;
}
pd_outb_mkr = (void*)p1;
}
inline _CORBA_Boolean
unmarshal_byte_swap() const { return pd_unmarshal_byte_swap; }
// Return TRUE(1) if unmarshalled data have to be byte-swapped.
inline _CORBA_Boolean
marshal_byte_swap() const { return pd_marshal_byte_swap; }
//
// Marshalling methods: array types
inline void
unmarshalArrayChar(_CORBA_Char* a, int length)
{
for (int i = 0; i < length; i++)
a[i] = unmarshalChar();
}
inline void
unmarshalArrayBoolean(_CORBA_Boolean* a, int length)
{
#if !defined(HAS_Cplusplus_Bool) || (SIZEOF_BOOL == 1)
get_octet_array((_CORBA_Char*)a, length, omni::ALIGN_1);
#else
for (int i = 0; i < length; i++)
a[i] = unmarshalBoolean();
#endif
}
inline void
unmarshalArrayShort(_CORBA_Short* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 2, omni::ALIGN_2);
if (unmarshal_byte_swap())
for (int i = 0; i < length; i++)
a[i] = byteSwap(a[i]);
}
inline void
unmarshalArrayUShort(_CORBA_UShort* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 2, omni::ALIGN_2);
if (unmarshal_byte_swap())
for (int i = 0; i < length; i++)
a[i] = byteSwap(a[i]);
}
inline void
unmarshalArrayLong(_CORBA_Long* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 4, omni::ALIGN_4);
if (unmarshal_byte_swap())
for (int i = 0; i < length; i++)
a[i] = byteSwap(a[i]);
}
inline void
unmarshalArrayULong(_CORBA_ULong* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 4, omni::ALIGN_4);
if (unmarshal_byte_swap())
for (int i = 0; i < length; i++)
a[i] = byteSwap(a[i]);
}
#ifdef HAS_LongLong
inline void
unmarshalArrayLongLong(_CORBA_LongLong* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 8, omni::ALIGN_8);
if (unmarshal_byte_swap())
for (int i = 0; i < length; i++)
a[i] = byteSwap(a[i]);
}
inline void
unmarshalArrayULongLong(_CORBA_ULongLong* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 8, omni::ALIGN_8);
if (unmarshal_byte_swap())
for (int i = 0; i < length; i++)
a[i] = byteSwap(a[i]);
}
#endif
#if !defined(NO_FLOAT)
inline void
unmarshalArrayFloat(_CORBA_Float* a, int length)
{
get_octet_array((_CORBA_Char*)a, length * 4, omni::ALIGN_4);
if (unmarshal_byte_swap()) {
_CORBA_ULong* p=(_CORBA_ULong*)a;
for( int i = 0; i < length; i++ ) {
p[i] = byteSwap(p[i]);
}
}
}
inline void
unmarshalArrayDouble(_CORBA_Double* a, int length)
{
get_octet_array((_CORBA_Char*) a, length * 8, omni::ALIGN_8);
if (unmarshal_byte_swap()) {
# if defined(Has_Longlong) && !defined (OMNI_MIXED_ENDIAN_DOUBLE)
_CORBA_ULongLong* p=(_CORBA_ULongLong*)a;
for( int i = 0; i < length; i++ ) {
p[i] = byteSwap(p[i]);
}
# else
struct LongArray2 {
_CORBA_ULong l[2];
};
LongArray2* p=(LongArray2*)a;
for (int i = 0; i < length; i++) {
LongArray2 l;
l.l[0] = byteSwap(p[i].l[1]);
l.l[1] = byteSwap(p[i].l[0]);
p[i] = l;
}
# endif
}
# ifdef OMNI_MIXED_ENDIAN_DOUBLE
{
struct LongArray2 {
_CORBA_ULong l[2];
};
LongArray2* p=(LongArray2*)a;
for( int i = 0; i < length; i++ ) {
_CORBA_ULong v = p[i].l[0];
p[i].l[0] = p[i].l[1];
p[i].l[1] = v;
}
}
# endif
}
#endif
inline void* inPtr() const { return pd_inb_mkr; }
inline void* outPtr() const { return pd_outb_mkr; }
inline void* inData(_CORBA_ULong size)
{
omni::ptr_arith_t p1 = inMkr();
omni::ptr_arith_t p2 = p1 + size;
if ((void*)p2 <= pd_inb_end) {
pd_inb_mkr = (void*)p2;
return (void*)p1;
}
else
return 0;
}
// If there is enough data in the buffer, return pointer to <size>
// bytes of input data, and skip the input pointer forwards
// accordingly. If there is insufficient data, return zero.
protected:
_CORBA_Boolean pd_unmarshal_byte_swap;
// TRUE(1) if unmarshalled data have to be byte-swapped.
_CORBA_Boolean pd_marshal_byte_swap;
// TRUE(1) if marshalled data have to be byte-swapped. i.e. data are not
// going into the stream with the host endian.
// Input buffer pointers, the region (*p) containing valid data
// is pd_inb_mkr <= p < pd_inb_end.
// pd_inb_end and pd_inb_mkr are initialised by fetchInputData().
// pd_inb_mkr is also updated by the unmarshalling operators between
// calls to fetchInputData().
void* pd_inb_end;
void* pd_inb_mkr;
inline omni::ptr_arith_t inEnd() { return (omni::ptr_arith_t)pd_inb_end; }
inline omni::ptr_arith_t inMkr() { return (omni::ptr_arith_t)pd_inb_mkr; }
inline omni::ptr_arith_t inMkr(omni::alignment_t align)
{
return omni::align_to((omni::ptr_arith_t)pd_inb_mkr, align);
}
virtual void fetchInputData(omni::alignment_t align, size_t required) = 0;
// Fetch at least <required> bytes into the input buffer.
// <required> must be no more than 8 bytes && align == required!!
// The data block should start at alignment <align>.
// If the space available is less than specified, raise a
// MARSHAL system exception.
// Output buffer pointers, the region (*p) that can be written
// into is pd_outb_mkr <= p < pd_outb_end.
// pd_outb_end and pd_outb_mkr are initialised by reserveOutputSpace().
// pd_outb_mkr is also updated by the marshalling operators between
// calls to reserveOutputSpace().
void* pd_outb_end;
void* pd_outb_mkr;
inline omni::ptr_arith_t outEnd() { return (omni::ptr_arith_t)pd_outb_end; }
inline omni::ptr_arith_t outMkr() { return (omni::ptr_arith_t)pd_outb_mkr; }
inline omni::ptr_arith_t outMkr(omni::alignment_t align)
{
return omni::align_to((omni::ptr_arith_t)pd_outb_mkr, align);
}
virtual
_CORBA_Boolean reserveOutputSpaceForPrimitiveType(omni::alignment_t align,
size_t required) = 0;
// Allocate at least <required> bytes in the output buffer.
// The data block should start at alignment <align>.
// <required> must be no more than 8 bytes && align == required!!
// Returns TRUE(1) if at least <required> bytes with the starting
// alignment as specified has been allocated.
// Returns FALSE(0) if the required space cannot be allocated.
// When the return value is FALSE, the cdrStream would skip writing
// the current argument quietly.
// If the derived class do not want the cdrStream to skip writing
// quietly, it should raise a MARSHAL system exception instead of
// returning FALSE.
virtual _CORBA_Boolean maybeReserveOutputSpace(omni::alignment_t align,
size_t required) = 0;
// Same as reserveOutputSpaceForPrimitiveType, except the following:
// 1. The required size can be any size.
// 2. The implementation of this function can throw CORBA::BAD_PARAM
// if the nature of the stream makes it impossible to fullfil this
// request. The caller should fall back to use put_octet_array or
// other means instead.
_OMNI_NS(omniCodeSet::TCS_C)* pd_tcs_c;
// Transmission code set convertor for char and string
_OMNI_NS(omniCodeSet::TCS_W)* pd_tcs_w;
// Transmission code set convertor for wchar and wstring
_OMNI_NS(omniCodeSet::NCS_C)* pd_ncs_c;
_OMNI_NS(omniCodeSet::NCS_W)* pd_ncs_w;
_OMNI_NS(ValueIndirectionTracker)* pd_valueTracker;
// Object used to track offsets of indirections in valuetypes.
private:
//
// Marshalling functions used when there is not enough buffer space
// for the inline versions.
#define fetchReserveMarshalFns(type) \
void reserveAndMarshal ## type(_CORBA_ ## type a); \
_CORBA_ ## type fetchAndUnmarshal ## type()
fetchReserveMarshalFns(Octet);
fetchReserveMarshalFns(Short);
fetchReserveMarshalFns(UShort);
fetchReserveMarshalFns(Long);
fetchReserveMarshalFns(ULong);
#ifdef HAS_LongLong
fetchReserveMarshalFns(LongLong);
fetchReserveMarshalFns(ULongLong);
#endif
#ifndef NO_FLOAT
fetchReserveMarshalFns(Double);
# if defined(HAS_LongDouble) && defined(HAS_LongLong)
fetchReserveMarshalFns(LongDouble);
# endif
#endif
#undef fetchReserveMarshalFns
public:
// Access functions to the char and wchar code set convertors
inline _OMNI_NS(omniCodeSet::TCS_C)* TCS_C() const { return pd_tcs_c; }
inline void TCS_C(_OMNI_NS(omniCodeSet::TCS_C)* c) { pd_tcs_c = c; }
inline _OMNI_NS(omniCodeSet::TCS_W)* TCS_W() const { return pd_tcs_w; }
inline void TCS_W(_OMNI_NS(omniCodeSet::TCS_W)* c) { pd_tcs_w = c; }
//
// Valuetype related methods
inline _OMNI_NS(ValueIndirectionTracker)* valueTracker() const {
return pd_valueTracker;
}
inline void valueTracker(_OMNI_NS(ValueIndirectionTracker)* v) {
pd_valueTracker = v;
}
inline void clearValueTracker() {
if (pd_valueTracker) {
delete pd_valueTracker;
pd_valueTracker = 0;
}
}
virtual void declareArrayLength(omni::alignment_t align, size_t size);
// Declare that an array of size <size> octets, alignment <align> is
// about to be marshalled. This allows chunked streams to
// pre-allocate a suitable sized chunk.
/////////////////////////////////////////////////////////////////////
virtual _CORBA_ULong completion();
// If an error occurs when a value is marshalled or unmarshalled, a
// system exception will be raised. The "completed" member of the
// exception must be taken from the return value of this function.
// Note: the return value is really of type CORBA::CompletionStatus.
// Since this declaration must appear before the CORBA declaration,
// we have to live with returning a _CORBA_ULong.
/////////////////////////////////////////////////////////////////////
virtual void* ptrToClass(int* cptr);
// Yet another dynamic casting mechanism to cope with compilers
// without dynamic_cast<>. Each class derived from cdrStream has a
// static int declared in it. The address of this int is used to
// compare the required class with the target object. Apart from the
// use of the integer pointer, it works just like _ptrToInterface
// and _ptrToObjRef in omniObjRef etc.
static inline cdrStream* downcast(cdrStream* s) {
return (cdrStream*)s->ptrToClass(&_classid);
}
// Not really necessary in the base class, but here for consistency.
static _core_attr int _classid;
private:
cdrStream(const cdrStream&);
cdrStream& operator=(const cdrStream&);
friend class cdrStreamAdapter;
friend class cdrValueChunkStream;
// cdrStreamAdapter and cdrValueChunkStream need to access protected
// pointers and virtual functions.
};
//
// Marshalling operators
#define marshallingOperators(type) \
inline void operator>>= (_CORBA_ ## type a, cdrStream& s) {\
s.marshal ## type(a);\
} \
inline void operator<<= (_CORBA_ ## type& a, cdrStream& s) {\
a = s.unmarshal ## type();\
}
marshallingOperators(Short)
marshallingOperators(UShort)
marshallingOperators(Long)
marshallingOperators(ULong)
#ifdef HAS_LongLong
marshallingOperators(LongLong)
marshallingOperators(ULongLong)
#endif
#if !defined(NO_FLOAT)
marshallingOperators(Float)
marshallingOperators(Double)
# if defined(HAS_LongDouble) && defined(HAS_LongLong)
marshallingOperators(LongDouble)
# endif
#endif
#undef marshallingOperators
//
// These are not implemented. They are here to cause linker errors in
// code that accidentally tries to use them.
void operator>>=(char a, cdrStream& s);
void operator<<=(char& a, cdrStream& s);
void operator>>=(unsigned char a, cdrStream& s);
void operator<<=(unsigned char& a, cdrStream& s);
#ifdef HAS_Cplusplus_Bool
void operator>>=(bool a, cdrStream& s);
void operator<<=(bool& a, cdrStream& s);
#endif
//
// Memory buffered stream
class cdrMemoryStream : public cdrStream {
public:
cdrMemoryStream(_CORBA_ULong initialBufsize = 0,
_CORBA_Boolean clearMemory = 0);
virtual ~cdrMemoryStream();
inline void rewindInputPtr()
{
pd_inb_mkr = pd_bufp_8;
pd_inb_end = (pd_readonly_and_external_buffer) ? pd_inb_end : pd_outb_mkr;
}
// Rewind the input pointer to the beginning of the buffer
inline void rewindPtrs()
{
if (!pd_readonly_and_external_buffer) {
pd_outb_mkr = pd_inb_mkr = pd_inb_end = pd_bufp_8;
}
else {
pd_outb_mkr = pd_outb_end = 0;
pd_inb_mkr = pd_bufp;
}
}
// Rewind the both input and output pointers to the beginning of the buffer
// bufSize() returns 0 after this call.
inline _CORBA_ULong bufSize() const
{
return (_CORBA_ULong)((omni::ptr_arith_t)pd_outb_mkr -
(omni::ptr_arith_t)pd_bufp_8);
}
// Returns the size of the buffer containing valid data.
inline void* bufPtr() const {
return pd_bufp_8;
}
// Returns a pointer to the beginning of the buffer.
void setByteSwapFlag(_CORBA_Boolean littleendian);
// Data in the buffer is little-endian (<littleendian> = TRUE(1)) or
// big-endian (<littleendian> = FALSE(0)). Setup the cdrStream
// accordingly.
inline _CORBA_Boolean readOnly() { return pd_readonly_and_external_buffer; }
// Return true if the stream is read-only -- i.e. it is using an
// external buffer.
cdrMemoryStream(const cdrMemoryStream&, _CORBA_Boolean read_only = 0);
// Copy a stream. If the source stream is read-only, or <read_only>
// is true, the new stream uses the same underlying memory buffer as
// the source, and assumes the buffer stays valid for the lifetime
// of the new stream.
cdrMemoryStream& operator=(const cdrMemoryStream&);
cdrMemoryStream(void* databuffer);
cdrMemoryStream(void* databuffer, size_t maxLen);
// Constructors for a read-only buffered stream.
virtual void* ptrToClass(int* cptr);
static inline cdrMemoryStream* downcast(cdrStream* s) {
return (cdrMemoryStream*)s->ptrToClass(&_classid);
}
static _core_attr int _classid;
protected:
_CORBA_Boolean pd_readonly_and_external_buffer;
_CORBA_Boolean pd_clear_memory;
void* pd_bufp;
void* pd_bufp_8;
char pd_inline_buffer[32];
public:
// The following implement the abstract functions defined in cdrStream
void put_octet_array(const _CORBA_Octet* b, int size,
omni::alignment_t align=omni::ALIGN_1);
void get_octet_array(_CORBA_Octet* b,int size,
omni::alignment_t align=omni::ALIGN_1);
void skipInput(_CORBA_ULong size);
_CORBA_Boolean checkInputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
_CORBA_Boolean checkOutputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
void copy_to(cdrStream&,int size,
omni::alignment_t align=omni::ALIGN_1);
void fetchInputData(omni::alignment_t,size_t);
_CORBA_Boolean reserveOutputSpaceForPrimitiveType(omni::alignment_t,size_t);
_CORBA_Boolean maybeReserveOutputSpace(omni::alignment_t,size_t);
_CORBA_ULong currentInputPtr() const;
_CORBA_ULong currentOutputPtr() const;
private:
_CORBA_Boolean reserveOutputSpace(omni::alignment_t,size_t);
};
//
// Specialisation of memory stream to handle CDR encapsulations
class _CORBA_Unbounded_Sequence_Octet;
class cdrEncapsulationStream : public cdrMemoryStream {
public:
cdrEncapsulationStream(_CORBA_ULong initialBufsize = 0,
_CORBA_Boolean clearMemory = 0);
cdrEncapsulationStream(const _CORBA_Octet* databuffer,
_CORBA_ULong bufsize,
_CORBA_Boolean allowAlign4 = 0);
cdrEncapsulationStream(const _CORBA_Unbounded_Sequence_Octet& seq,
_CORBA_Boolean allowAlign4 = 0);
cdrEncapsulationStream(cdrStream& s,_CORBA_ULong fetchsize);
// copy from <s> <fetchsize> bytes of data.
void getOctetStream(_CORBA_Octet*& databuffer,
_CORBA_ULong& max,
_CORBA_ULong& len);
// Return stream's buffer. Takes ownership of the buffer.
void setOctetSeq(_CORBA_Unbounded_Sequence_Octet& seq);
// Set octet sequence from the stream's buffer. Ownership of the
// buffer is passed to the sequence.
virtual void* ptrToClass(int* cptr);
static inline cdrEncapsulationStream* downcast(cdrStream* s) {
return (cdrEncapsulationStream*)s->ptrToClass(&_classid);
}
static _core_attr int _classid;
};
//
// Fake stream that counts how many octets are marshalled
class cdrCountingStream : public cdrStream {
public:
cdrCountingStream(_OMNI_NS(omniCodeSet::TCS_C)* tcs_c,
_OMNI_NS(omniCodeSet::TCS_W)* tcs_w,
size_t initialoffset = 0) :
pd_total(initialoffset) {
pd_tcs_c = tcs_c;
pd_tcs_w = tcs_w;
}
virtual ~cdrCountingStream() {}
size_t total() { return pd_total; }
// The following implements the abstract functions defined in cdrStream
void put_octet_array(const _CORBA_Octet* b, int size,
omni::alignment_t align=omni::ALIGN_1);
_CORBA_Boolean reserveOutputSpaceForPrimitiveType(omni::alignment_t align,
size_t required);
_CORBA_Boolean maybeReserveOutputSpace(omni::alignment_t align,
size_t required);
_CORBA_Boolean checkOutputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
void copy_to(cdrStream&,int size,
omni::alignment_t align=omni::ALIGN_1);
void get_octet_array(_CORBA_Octet* b,int size,
omni::alignment_t align=omni::ALIGN_1);
void skipInput(_CORBA_ULong);
_CORBA_Boolean checkInputOverrun(_CORBA_ULong,_CORBA_ULong,
omni::alignment_t align=omni::ALIGN_1);
void fetchInputData(omni::alignment_t,size_t);
_CORBA_ULong currentInputPtr() const;
_CORBA_ULong currentOutputPtr() const;
virtual void* ptrToClass(int* cptr);
static inline cdrCountingStream* downcast(cdrStream* s) {
return (cdrCountingStream*)s->ptrToClass(&_classid);
}
static _core_attr int _classid;
private:
size_t pd_total;
cdrCountingStream(const cdrCountingStream&);
cdrCountingStream& operator=(const cdrCountingStream&);
};
//
// Stream adapter
// In some circumstances, for example in omniORBpy, it is necessary to
// perform some extra work around operations which manage a
// cdrStream's buffers. cdrStreamAdapter provides a wrapper around a
// cdrStream object. A class derived from cdrStreamAdapter may do
// anything it likes in its implementations of the cdrStream virtual
// functions, as long as it also calls the cdrStreamAdapter versions.
class cdrStreamAdapter : public cdrStream {
protected:
cdrStreamAdapter(cdrStream& stream) :
pd_actual(stream)
{
pd_unmarshal_byte_swap = pd_actual.pd_unmarshal_byte_swap;
pd_marshal_byte_swap = pd_actual.pd_marshal_byte_swap;
pd_tcs_c = pd_actual.pd_tcs_c;
pd_tcs_w = pd_actual.pd_tcs_w;
copyStateFromActual();
}
virtual ~cdrStreamAdapter()
{
copyStateToActual();
pd_valueTracker = 0;
}
// Implementations of abstract functions...
void put_octet_array(const _CORBA_Octet* b, int size,
omni::alignment_t align=omni::ALIGN_1);
void get_octet_array(_CORBA_Octet* b,int size,
omni::alignment_t align=omni::ALIGN_1);
void skipInput(_CORBA_ULong size);
_CORBA_Boolean checkInputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
_CORBA_Boolean checkOutputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
void copy_to(cdrStream&, int size, omni::alignment_t align=omni::ALIGN_1);
void fetchInputData(omni::alignment_t align,size_t required);
_CORBA_Boolean reserveOutputSpaceForPrimitiveType(omni::alignment_t align,
size_t required);
_CORBA_Boolean maybeReserveOutputSpace(omni::alignment_t align,
size_t required);
_CORBA_ULong currentInputPtr() const;
_CORBA_ULong currentOutputPtr() const;
_CORBA_ULong completion();
public:
inline void copyStateFromActual()
{
pd_inb_end = pd_actual.pd_inb_end;
pd_inb_mkr = pd_actual.pd_inb_mkr;
pd_outb_end = pd_actual.pd_outb_end;
pd_outb_mkr = pd_actual.pd_outb_mkr;
pd_valueTracker = pd_actual.pd_valueTracker;
}
inline void copyStateToActual() const
{
pd_actual.pd_inb_end = pd_inb_end;
pd_actual.pd_inb_mkr = pd_inb_mkr;
pd_actual.pd_outb_end = pd_outb_end;
pd_actual.pd_outb_mkr = pd_outb_mkr;
pd_actual.pd_valueTracker = pd_valueTracker;
}
virtual void* ptrToClass(int* cptr);
static inline cdrStreamAdapter* downcast(cdrStream* s) {
return (cdrStreamAdapter*)s->ptrToClass(&_classid);
}
static _core_attr int _classid;
private:
cdrStream& pd_actual;
};
//
// Valuetype support
// cdrValueChunkStream is similar to cdrStreamAdapter. It implements
// chunked encoding of valuetypes by wrapping an existing stream.
//
// Use for reading and writing is slightly asymmetric: for writing,
// the stream wrapper must be created before marshalling the value tag
// indicating chunked encoding; for reading, the wrapper is created
// after unmarshalling the outer-most value tag (since it is not until
// then that the reader knows chunking is is use).
class cdrValueChunkStream : public cdrStream {
public:
cdrValueChunkStream(cdrStream& stream) :
pd_actual(stream), pd_nestLevel(0), pd_lengthPtr(0),
pd_remaining(0), pd_inHeader(0), pd_inChunk(0), pd_justEnded(0),
pd_reader(0), pd_exception(0)
{
pd_unmarshal_byte_swap = pd_actual.pd_unmarshal_byte_swap;
pd_marshal_byte_swap = pd_actual.pd_marshal_byte_swap;
pd_tcs_c = pd_actual.pd_tcs_c;
pd_tcs_w = pd_actual.pd_tcs_w;
copyStateFromActual();
}
virtual ~cdrValueChunkStream();
void startOutputValueHeader(_CORBA_Long valueTag);
// Start a new value with the given value tag. The value tag must
// specify chunking. Must be called at least once before using the
// stream for writing.
void startOutputValueBody();
// End the value header and start a chunk for the value body.
void endOutputValue();
// End the current value, decrementing the nesting level.
void initialiseInput();
// Initialise stream as an input stream.
void startInputValueBody();
// Start reading the value body.
inline _CORBA_Long nestLevel() {
return pd_nestLevel;
}
inline void exceptionOccurred()
{
pd_exception = 1;
}
_CORBA_Boolean skipToNestedValue(_CORBA_Long level);
// Function used by truncation. Skip the remaining octets in the
// value at the specified nesting level. If a nested value is
// encountered, return true; if the end of the value is reached,
// return false.
//
// We need this because we might truncate a value containing a
// member that is a value we know about. Later on, an indirection
// might point to that member.
// Implementations of abstract functions...
void put_octet_array(const _CORBA_Octet* b, int size,
omni::alignment_t align=omni::ALIGN_1);
void get_octet_array(_CORBA_Octet* b,int size,
omni::alignment_t align=omni::ALIGN_1);
void skipInput(_CORBA_ULong size);
_CORBA_Boolean checkInputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
_CORBA_Boolean checkOutputOverrun(_CORBA_ULong itemSize,
_CORBA_ULong nItems,
omni::alignment_t align=omni::ALIGN_1);
void fetchInputData(omni::alignment_t align,size_t required);
_CORBA_Boolean reserveOutputSpaceForPrimitiveType(omni::alignment_t align,
size_t required);
_CORBA_Boolean maybeReserveOutputSpace(omni::alignment_t align,
size_t required);
_CORBA_ULong currentInputPtr() const;
_CORBA_ULong currentOutputPtr() const;
_CORBA_ULong completion();
virtual void declareArrayLength(omni::alignment_t align, size_t size);
inline void copyStateFromActual()
{
pd_inb_end = pd_actual.pd_inb_end;
pd_inb_mkr = pd_actual.pd_inb_mkr;
pd_outb_end = pd_actual.pd_outb_end;
pd_outb_mkr = pd_actual.pd_outb_mkr;
pd_valueTracker = pd_actual.pd_valueTracker;
}
inline void copyStateToActual() const
{
pd_actual.pd_inb_mkr = pd_inb_mkr;
pd_actual.pd_outb_mkr = pd_outb_mkr;
pd_actual.pd_valueTracker = pd_valueTracker;
}
static _core_attr int _classid;
virtual void* ptrToClass(int* cptr);
static inline cdrValueChunkStream* downcast(cdrStream* s) {
return (cdrValueChunkStream*)s->ptrToClass(&_classid);
}
private:
void startOutputChunk();
void endOutputChunk();
void maybeStartNewChunk(omni::alignment_t align, size_t size);
// Start a new chunk by doing the equivalent of endOutputChunk,
// startOutputChunk, unless ending the chunk now would cause us to
// output a zero length chunk. In that case, we use
// declareArrayLength to reserve space in the chunk for an element
// of the specified size.
void startInputChunk();
void endInputValue();
_CORBA_Long peekChunkTag();
// Retrieve a chunk tag from the stream without moving the pointers along.
inline void setLength(_CORBA_ULong len)
{
*pd_lengthPtr = pd_marshal_byte_swap ? byteSwap(len) : len;
}
inline _CORBA_ULong getLength()
{
return pd_unmarshal_byte_swap ? byteSwap(*pd_lengthPtr) : *pd_lengthPtr;
}
cdrStream& pd_actual; // Stream being wrapped
_CORBA_Long pd_nestLevel; // The nesting level of chunks
_CORBA_Long* pd_lengthPtr; // Pointer to the chunk length field
_CORBA_ULong pd_remaining; // !=0 => octets remaining in chunk
_CORBA_Boolean pd_inHeader; // True if we're inside a value header
_CORBA_Boolean pd_inChunk; // True if we're inside a chunk
_CORBA_Boolean pd_justEnded; // True if we've just ended a value
_CORBA_Boolean pd_reader; // True if we're a reader not a writer
_CORBA_Boolean pd_exception; // Set true if an exception occurs, to
// prevent further exceptions during
// clean-up.
};
#undef CdrMarshal
#undef CdrUnMarshal
#endif /* __CDRSTREAM_H__ */
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