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added UUID object, and updated UniqueId to generate a 64 bit id

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based one a UUID
This commit is contained in:
maroy 2005-04-28 14:36:00 +00:00
parent 3d3006bdcc
commit 0520d5b516
10 changed files with 957 additions and 18 deletions
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4
livesupport/modules/core/etc/Makefile.in
View file

@ -21,7 +21,7 @@
#
#
# Author : $Author: maroy $
# Version : $Revision: 1.28 $
# Version : $Revision: 1.29 $
# Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/etc/Makefile.in,v $
#
# @configure_input@
@ -113,6 +113,7 @@ LDFLAGS = @LDFLAGS@ -pthread \
# Dependencies
#-------------------------------------------------------------------------------
CORE_LIB_OBJS = ${TMP_DIR}/UniqueId.o \
${TMP_DIR}/Uuid.o \
${TMP_DIR}/Playable.o \
${TMP_DIR}/AudioClip.o \
${TMP_DIR}/FadeInfo.o \
@ -132,6 +133,7 @@ CORE_LIB_OBJS = ${TMP_DIR}/UniqueId.o \
${TMP_DIR}/MetadataTypeContainer.o
TEST_RUNNER_OBJS = ${TMP_DIR}/TestRunner.o \
${TMP_DIR}/UuidTest.o \
${TMP_DIR}/UniqueIdTest.o \
${TMP_DIR}/AudioClipTest.o \
${TMP_DIR}/FadeInfoTest.o \

12
livesupport/modules/core/etc/configure.ac
View file

@ -21,7 +21,7 @@ dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
dnl
dnl
dnl Author : $Author: maroy $
dnl Version : $Revision: 1.10 $
dnl Version : $Revision: 1.11 $
dnl Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/etc/configure.ac,v $
dnl-----------------------------------------------------------------------------
@ -35,14 +35,20 @@ dnl-----------------------------------------------------------------------------
AC_INIT(Core, 1.0, bugs@campware.org)
AC_PREREQ(2.59)
AC_COPYRIGHT([Copyright (c) 2004 Media Development Loan Fund under the GNU GPL])
AC_REVISION($Revision: 1.10 $)
AC_REVISION($Revision: 1.11 $)
AC_CONFIG_SRCDIR(../src/UniqueId.cxx)
AC_CONFIG_HEADERS(configure.h)
AC_PROG_CXX()
AC_CHECK_HEADERS(getopt.h sys/time.h time.h sys/types.h pwd.h errno.h)
AC_CHECK_TYPES([uint64_t, uint32_t, uint16_t, uint8_t],
HAVE_INTEGRAL_TYPES="yes", HAVE_INTEGRAL_TYPES="no")
if test "x${HAVE_INTEGRAL_TYPES}" = "xno" ; then
AC_MSG_ERROR([a required integral type is not available])
fi
AC_CHECK_HEADERS(getopt.h sys/time.h time.h sys/types.h pwd.h errno.h stdint.h)
PKG_CHECK_MODULES(LIBXMLPP,[libxml++-2.6 >= 2.6.0])
AC_SUBST(LIBXMLPP_CFLAGS)

57
livesupport/modules/core/include/LiveSupport/Core/Md5.h
View file

@ -72,8 +72,8 @@ documentation and/or software.
------------------------------------------------------------------------------
Author : $Author: fgerlits $
Version : $Revision: 1.1 $
Author : $Author: maroy $
Version : $Revision: 1.2 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/include/LiveSupport/Core/Md5.h,v $
------------------------------------------------------------------------------*/
@ -87,6 +87,17 @@ documentation and/or software.
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#else
#error need stdint.h
#endif
#include <stdio.h>
#include <sstream>
#include <fstream>
@ -118,8 +129,8 @@ namespace Core {
* on the basis of the original C code by RSA Data Security, Inc. See the
* header of the source file for further information.
*
* @author $Author: fgerlits $
* @version $Revision: 1.1 $
* @author $Author: maroy $
* @version $Revision: 1.2 $
*/
class Md5
{
@ -144,6 +155,16 @@ class Md5
uint1 digest[16];
uint1 finalized;
/**
* The low 64 bits of the checksum.
*/
uint64_t low64;
/**
* The high 64 bits of the checksum.
*/
uint64_t high64;
// last, the private methods, mostly static:
void init (); // called by all constructors
void transform (uint1 *buffer); // does the real update work. Note
@ -168,6 +189,13 @@ class Md5
static inline void II (uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
uint4 s, uint4 ac);
/**
* Calculate the lower and higher 64 bit values for the checksum
*/
void
calcNumericRepresentation(void) throw ();
public:
/**
@ -199,6 +227,27 @@ class Md5
*/
operator std::string () throw();
/**
* Return the lower 64 bits of the checksum.
*
* @return the lower 64 bits of the checksum.
*/
uint64_t
low64bits(void) const throw ()
{
return low64;
}
/**
* Return the higher 64 bits of the checksum.
*
* @return the higher 64 bits of the checksum.
*/
uint64_t
high64bits(void) const throw ()
{
return high64;
}
};

320
livesupport/modules/core/include/LiveSupport/Core/Uuid.h Normal file
View file

@ -0,0 +1,320 @@
/*------------------------------------------------------------------------------
Copyright (c) 2004 Media Development Loan Fund
This file is part of the LiveSupport project.
http://livesupport.campware.org/
To report bugs, send an e-mail to bugs@campware.org
LiveSupport is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
LiveSupport 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with LiveSupport; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
This code is based upon the Leach working draft for UUIDs,
http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
and the sample code therein.
The original copyright message of the sample code is the following:
** Copyright (c) 1990- 1993, 1996 Open Software Foundation, Inc.
** Copyright (c) 1989 by Hewlett-Packard Company, Palo Alto, Ca. &
** Digital Equipment Corporation, Maynard, Mass.
** Copyright (c) 1998 Microsoft.
** To anyone who acknowledges that this file is provided "AS IS"
** without any express or implied warranty: permission to use, copy,
** modify, and distribute this file for any purpose is hereby
** granted without fee, provided that the above copyright notices and
** this notice appears in all source code copies, and that none of
** the names of Open Software Foundation, Inc., Hewlett-Packard
** Company, or Digital Equipment Corporation be used in advertising
** or publicity pertaining to distribution of the software without
** specific, written prior permission. Neither Open Software
** Foundation, Inc., Hewlett-Packard Company, Microsoft, nor Digital Equipment
** Corporation makes any representations about the suitability of
** this software for any purpose.
Author : $Author: maroy $
Version : $Revision: 1.1 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/include/LiveSupport/Core/Uuid.h,v $
------------------------------------------------------------------------------*/
#ifndef LiveSupport_Core_Uuid_h
#define LiveSupport_Core_Uuid_h
#ifndef __cplusplus
#error This is a C++ include file
#endif
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#else
#error need stdint.h
#endif
#include <string>
#include "LiveSupport/Core/Ptr.h"
namespace LiveSupport {
namespace Core {
/* ================================================================ constants */
/* =================================================================== macros */
/* =============================================================== data types */
/**
* A class representing globally unique identifiers.
* This implementation is based on the Leach UUID/GUID draft:
* http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
*
* @author $Author: maroy $
* @version $Revision: 1.1 $
* @see http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
*/
class Uuid
{
private:
/**
* The raw time type
*/
typedef uint64_t UuidTime;
/**
* Structure holding a 6-byte system node id.
*/
typedef struct {
char nodeId[6];
} UuidNode;
/**
* The value of the id.
*/
long long int id;
/**
* A string representation of the id, in hexadecimal notation.
*/
std::string idAsString;
/**
* The low part of time.
*/
uint32_t timeLow;
/**
* The middle part of time.
*/
uint16_t timeMid;
/**
* The high part of time, with version included.
*/
uint16_t timeHiAndVersion;
/**
* Clock sequence number high and reserved parts.
*/
uint8_t clockSeqHiAndReserved;
/**
* Clock sequenc number, low part.
*/
uint8_t clockSeqLow;
/**
* The 6 byte system node id.
*/
uint8_t node[6];
/**
* Default constructor.
*/
Uuid(void) throw ()
{
}
/**
* Compare two UUIDs
*
* @param id1 one id to compare
* @param id2 the other id to compare
* @return true if they are equal, false otherwise
*/
static bool
compare(const Uuid & id1,
const Uuid & id2) throw ();
/**
* Return the current time, but always return a different value,
* even if the system clock granularity is not fine enough.
*
* @param timestamp an out parameter for the current time.
*/
static void
getCurrentTime(UuidTime * timestamp) throw ();
/**
* Try to generate a truely random number (which is not possible,
* of course).
*
* @return a random number
*/
static uint16_t
trueRandom(void) throw ();
/**
* Read the last saved state of the UUID generator from
* non-volatile storage.
*
* @param clockSeq out parameter for the clock sequence
* @param timestamp out parameter for the timestamp
* @param node out parameter for the system node id
*/
int
readState(uint16_t * clockSeq,
UuidTime * timestamp,
UuidNode * node) throw ();
/**
* Write the last saved state of the UUID generator to
* non-volatile storage.
*
* @param clockSeq the clock sequence
* @param timestamp the timestamp
* @param node the system node id
*/
void
writeState(uint16_t clockSeq,
UuidTime timestamp,
UuidNode node) throw ();
/**
* Generate a type 1 UUID.
* This function will fill out the object's internal attributes
* for it to become a proper UUID.
*
* For UUID types, see
* http://www.webdav.org/specs/draft-leach-uuids-guids-01.txt
*
* @param clockSeq the clock sequence
* @param timestamp the time stamp
* @param node the system node id
*/
void
format(uint16_t clockSeq,
UuidTime timestamp,
UuidNode node) throw ();
/**
* Get the system time in the UUID UTC base time,
* which is October 15, 1582.
*
* @param uuidTime an out parameter for the time.
*/
static void
getSystemTime(UuidTime * uuidTime) throw ();
/**
* Return the IEEE node id.
*
* @param node an out parameter for the node id.
*/
static void
getIeeeNodeIdentifier(UuidNode * node) throw ();
/**
* Create a string representation of the UUID.
* Store the result in the idAsString attribute.
*/
void
representAsString(void) throw ();
public:
/**
* Generate a globally unique id. This is used for testing.
* In real life, unique IDs are generated by the storage server.
*/
static Ptr<Uuid>::Ref
generateId(void) throw ();
/**
* Compare this is with an other one.
*
* @param otherId the other unqiue id to compare to.
* @return true if this an otherId have the same ID value,
* false otherwise.
*/
bool
operator==(const Uuid & otherId) const throw ()
{
return compare(*this, otherId);
}
/**
* Compare this is with an other one.
*
* @param otherId the other unqiue id to compare to.
* @return true if this an otherId do not have the same ID value,
* false otherwise.
*/
bool
operator!=(const Uuid & otherId) const throw ()
{
return !compare(*this, otherId);
}
/**
* Return the string value of this globally unique id.
*
* @return the string value of this id.
*/
operator std::string() const throw ()
{
return idAsString;
}
};
/* ================================================= external data structures */
/* ====================================================== function prototypes */
inline std::ostream &
operator<< (std::ostream & os,
const Uuid & id)
{
os << (std::string) id;
return os;
}
} // namespace Core
} // namespace LiveSupport
#endif // LiveSupport_Core_Uuid_h

36
livesupport/modules/core/src/Md5.cxx
View file

@ -72,8 +72,8 @@ documentation and/or software.
------------------------------------------------------------------------------
Author : $Author: fgerlits $
Version : $Revision: 1.2 $
Author : $Author: maroy $
Version : $Revision: 1.3 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/src/Md5.cxx,v $
------------------------------------------------------------------------------*/
@ -108,6 +108,7 @@ Md5::Md5(const std::string &s) throw(std::invalid_argument)
init();
update (s);
finalize();
calcNumericRepresentation();
}
@ -119,6 +120,7 @@ Md5::Md5(std::istream& stream) throw(std::invalid_argument)
init();
update (stream);
finalize();
calcNumericRepresentation();
}
@ -130,6 +132,7 @@ Md5::Md5(FILE *file) throw(std::invalid_argument)
init();
update(file);
finalize ();
calcNumericRepresentation();
}
@ -149,6 +152,32 @@ std::string Md5::hexDigest() throw()
}
/*------------------------------------------------------------------------------
* Calculate the numeric representation of the checksum
*----------------------------------------------------------------------------*/
void
Md5 :: calcNumericRepresentation(void) throw ()
{
low64 = (uint64_t) digest[15];
low64 |= ((uint64_t) digest[14]) << 8;
low64 |= ((uint64_t) digest[13]) << 16;
low64 |= ((uint64_t) digest[12]) << 24;
low64 |= ((uint64_t) digest[11]) << 32;
low64 |= ((uint64_t) digest[10]) << 40;
low64 |= ((uint64_t) digest[9]) << 48;
low64 |= ((uint64_t) digest[8]) << 56;
high64 = (uint64_t) digest[7];
high64 |= ((uint64_t) digest[6]) << 8;
high64 |= ((uint64_t) digest[5]) << 16;
high64 |= ((uint64_t) digest[4]) << 24;
high64 |= ((uint64_t) digest[3]) << 32;
high64 |= ((uint64_t) digest[2]) << 40;
high64 |= ((uint64_t) digest[1]) << 48;
high64 |= ((uint64_t) digest[0]) << 56;
}
/*------------------------------------------------------------------------------
* Convert the md5 sum to a hexadecimal string.
*----------------------------------------------------------------------------*/
@ -559,3 +588,6 @@ inline void Md5::II(uint4& a, uint4 b, uint4 c, uint4 d, uint4 x,
a = rotate_left (a, s) +b;
}

6
livesupport/modules/core/src/Md5Test.cxx
View file

@ -21,8 +21,8 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author : $Author: fgerlits $
Version : $Revision: 1.1 $
Author : $Author: maroy $
Version : $Revision: 1.2 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/src/Md5Test.cxx,v $
------------------------------------------------------------------------------*/
@ -99,6 +99,8 @@ Md5Test :: firstTest(void)
std::string s = someString;
CPPUNIT_ASSERT(s == "9007a3599f5d3ae2ac11a29308f964eb");
CPPUNIT_ASSERT(someString.low64bits() == 0xac11a29308f964ebLL);
CPPUNIT_ASSERT(someString.high64bits() == 0x9007a3599f5d3ae2LL);
// test the construction from a FILE*
FILE *f = fopen("src/Md5Test.h", "r");

16
livesupport/modules/core/src/UniqueId.cxx
View file

@ -21,8 +21,8 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author : $Author: fgerlits $
Version : $Revision: 1.2 $
Author : $Author: maroy $
Version : $Revision: 1.3 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/src/UniqueId.cxx,v $
------------------------------------------------------------------------------*/
@ -35,6 +35,8 @@
#include <cstdlib>
#include "LiveSupport/Core/Uuid.h"
#include "LiveSupport/Core/Md5.h"
#include "LiveSupport/Core/UniqueId.h"
@ -57,10 +59,12 @@ using namespace LiveSupport::Core;
Ptr<UniqueId>::Ref
UniqueId :: generateId(void) throw ()
{
// TODO: implement this properly, e.g. use a GUID pattern
// one example is the algorithm found in xdoclet for GUID
Ptr<UniqueId>::Ref id(new UniqueId(rand()));
Ptr<Uuid>::Ref uuid = Uuid::generateId();
// as uuid is 128 bits, but we have only 64 bits, create an md5 hash
// (which is still 128 bits), and use its values to create a 64 value
// hopefully this is unique enough
Md5 md5((std::string)*uuid);
Ptr<UniqueId>::Ref id(new UniqueId(md5.high64bits() + md5.low64bits()));
return id;
}

318
livesupport/modules/core/src/Uuid.cxx Normal file
View file

@ -0,0 +1,318 @@
/*------------------------------------------------------------------------------
Copyright (c) 2004 Media Development Loan Fund
This file is part of the LiveSupport project.
http://livesupport.campware.org/
To report bugs, send an e-mail to bugs@campware.org
LiveSupport is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
LiveSupport 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with LiveSupport; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author : $Author: maroy $
Version : $Revision: 1.1 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/src/Uuid.cxx,v $
------------------------------------------------------------------------------*/
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#error need sys/time.h
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#else
#error need unistd.h
#endif
#include <cstdlib>
#include <iomanip>
#include <sstream>
#include "LiveSupport/Core/Uuid.h"
using namespace LiveSupport::Core;
/* =================================================== local data structures */
/* ================================================ local constants & macros */
/*------------------------------------------------------------------------------
* Set the following to the number of 100ns ticks of the actual
* resolution of your system's clock
*----------------------------------------------------------------------------*/
#define UUIDS_PER_TICK 1024
/* =============================================== local function prototypes */
/* ============================================================= module code */
/*------------------------------------------------------------------------------
* Generate a globally unique id.
*----------------------------------------------------------------------------*/
Ptr<Uuid>::Ref
Uuid :: generateId(void) throw ()
{
Ptr<Uuid>::Ref id(new Uuid());
UuidTime timestamp;
UuidTime lastTime;
uint16_t clockseq;
UuidNode node;
UuidNode lastNode;
int f;
/* acquire system wide lock so we're alone */
//LOCK;
/* get current time */
getCurrentTime(&timestamp);
/* get node ID */
getIeeeNodeIdentifier(&node);
/* get saved state from NV storage */
f = id->readState(&clockseq, &lastTime, &lastNode);
/* if no NV state, or if clock went backwards, or node ID changed
(e.g., net card swap) change clockseq */
if (!f || memcmp(&node, &lastNode, sizeof(UuidNode))) {
clockseq = trueRandom();
} else if (timestamp < lastTime) {
clockseq++;
}
/* stuff fields into the UUID */
id->format(clockseq, timestamp, node);
id->representAsString();
/* save the state for next time */
id->writeState(clockseq, timestamp, node);
//UNLOCK;
return id;
}
/*------------------------------------------------------------------------------
* Format the UUID
*----------------------------------------------------------------------------*/
void
Uuid :: format(uint16_t clockSeq,
UuidTime timestamp,
UuidNode node) throw ()
{
/* Construct a version 1 uuid with the information we've gathered
* plus a few constants. */
timeLow = (unsigned long)(timestamp & 0xFFFFFFFF);
timeMid = (unsigned short)((timestamp >> 32) & 0xFFFF);
timeHiAndVersion = (unsigned short)((timestamp >> 48) & 0x0FFF);
timeHiAndVersion |= (1 << 12);
clockSeqLow = clockSeq & 0xFF;
clockSeqHiAndReserved = (clockSeq & 0x3F00) >> 8;
clockSeqHiAndReserved |= 0x80;
for (int i = 0; i < 6; ++i) {
this->node[i] = node.nodeId[i];
}
}
/*------------------------------------------------------------------------------
* Create a string representation of the UUID
*----------------------------------------------------------------------------*/
void
Uuid :: representAsString(void) throw ()
{
std::stringstream sstr;
sstr << std::hex << std::setw(8) << std::setfill('0') << timeLow << '-'
<< std::hex << std::setw(4) << std::setfill('0') << timeMid << '-'
<< std::hex << std::setw(4) << std::setfill('0')
<< timeHiAndVersion << '-'
<< std::hex << std::setw(2) << std::setfill('0')
<< (unsigned short) clockSeqHiAndReserved << '-'
<< std::hex << std::setw(2) << std::setfill('0')
<< (unsigned short) clockSeqLow << '-';
for (int i = 0; i < 6; ++i) {
sstr << std::hex << std::setw(2) << std::setfill('0')
<< (unsigned short) this->node[i];
}
idAsString = sstr.str();
}
/*------------------------------------------------------------------------------
* Read the current state from non-volatile storage
*----------------------------------------------------------------------------*/
int
Uuid :: readState(uint16_t * clockSeq,
UuidTime * timestamp,
UuidNode * node) throw ()
{
// TODO: read the state from non-volatile storage
return 0;
}
/*------------------------------------------------------------------------------
* Write the current state to non-volatile storage
*----------------------------------------------------------------------------*/
void
Uuid :: writeState(uint16_t clockSeq,
UuidTime timestamp,
UuidNode node) throw ()
{
// TODO: write the current state to non-volatile storage
}
/*------------------------------------------------------------------------------
* Get the current time into a timestamp
*----------------------------------------------------------------------------*/
void
Uuid :: getCurrentTime(UuidTime *timestamp) throw ()
{
UuidTime timeNow;
static UuidTime timeLast;
static uint16_t uuidsThisTick;
static bool inited = false;
if (!inited) {
getSystemTime(&timeNow);
uuidsThisTick = UUIDS_PER_TICK;
inited = true;
};
while (true) {
getSystemTime(&timeNow);
/* if clock reading changed since last UUID generated... */
if (timeLast != timeNow) {
/* reset count of uuids gen'd with this clock reading */
uuidsThisTick = 0;
break;
};
if (uuidsThisTick < UUIDS_PER_TICK) {
uuidsThisTick++;
break;
};
/* going too fast for our clock; spin */
};
/* add the count of uuids to low order bits of the clock reading */
*timestamp = timeNow + uuidsThisTick;
}
/*------------------------------------------------------------------------------
* Get the system time in the UUID UTC base time, which is October 15, 1582
*----------------------------------------------------------------------------*/
void
Uuid :: getSystemTime(UuidTime * uuidTime) throw ()
{
struct timeval tp;
gettimeofday(&tp, (struct timezone *)0);
/* Offset between UUID formatted times and Unix formatted times.
UUID UTC base time is October 15, 1582.
Unix base time is January 1, 1970.
*/
*uuidTime = (tp.tv_sec * 10000000)
+ (tp.tv_usec * 10)
+ 0x01B21DD213814000LL;
}
/*------------------------------------------------------------------------------
* Get the IEEE node identifier
*----------------------------------------------------------------------------*/
void
Uuid :: getIeeeNodeIdentifier(UuidNode * node) throw ()
{
long hostId = gethostid();
node->nodeId[5] = (char) (hostId & 0x0000000000ffL);
node->nodeId[4] = (char) ((hostId & 0x00000000ff00L) >> 8);
node->nodeId[3] = (char) ((hostId & 0x000000ff0000L) >> 16);
node->nodeId[2] = (char) ((hostId & 0x0000ff000000L) >> 24);
// these will be 0, as the returned node is only 32 bits
node->nodeId[1] = 0;
node->nodeId[0] = 0;
}
/*------------------------------------------------------------------------------
* Generate a random number
*----------------------------------------------------------------------------*/
uint16_t
Uuid :: trueRandom(void) throw ()
{
static bool inited = false;
UuidTime timeNow;
if (!inited) {
getSystemTime(&timeNow);
timeNow = timeNow/UUIDS_PER_TICK;
srand((unsigned int)(((timeNow >> 32) ^ timeNow)&0xffffffff));
inited = true;
};
return rand();
}
/*------------------------------------------------------------------------------
* Compare two ids.
*----------------------------------------------------------------------------*/
bool
Uuid :: compare(const Uuid & id1,
const Uuid & id2) throw ()
{
if (!(id1.timeLow == id2.timeLow
&& id1.timeMid == id2.timeMid
&& id1.timeHiAndVersion == id2.timeHiAndVersion
&& id1.clockSeqHiAndReserved == id2.clockSeqHiAndReserved
&& id1.clockSeqLow == id2.clockSeqLow)) {
return false;
}
for (int i = 0; i < 6; ++i) {
if (id1.node[i] != id2.node[i]) {
return false;
}
}
return true;
}

99
livesupport/modules/core/src/UuidTest.cxx Normal file
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@ -0,0 +1,99 @@
/*------------------------------------------------------------------------------
Copyright (c) 2004 Media Development Loan Fund
This file is part of the LiveSupport project.
http://livesupport.campware.org/
To report bugs, send an e-mail to bugs@campware.org
LiveSupport is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
LiveSupport 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with LiveSupport; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author : $Author: maroy $
Version : $Revision: 1.1 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/src/UuidTest.cxx,v $
------------------------------------------------------------------------------*/
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#else
#error "Need unistd.h"
#endif
#include <string>
#include <iostream>
#include "LiveSupport/Core/Uuid.h"
#include "UuidTest.h"
using namespace std;
using namespace LiveSupport::Core;
/* =================================================== local data structures */
/* ================================================ local constants & macros */
CPPUNIT_TEST_SUITE_REGISTRATION(UuidTest);
/* =============================================== local function prototypes */
/* ============================================================= module code */
/*------------------------------------------------------------------------------
* Set up the test environment
*----------------------------------------------------------------------------*/
void
UuidTest :: setUp(void) throw ()
{
}
/*------------------------------------------------------------------------------
* Clean up the test environment
*----------------------------------------------------------------------------*/
void
UuidTest :: tearDown(void) throw ()
{
}
/*------------------------------------------------------------------------------
* Test to see if the singleton Hello object is accessible
*----------------------------------------------------------------------------*/
void
UuidTest :: firstTest(void)
throw (CPPUNIT_NS::Exception)
{
Ptr<Uuid>::Ref id1;
Ptr<Uuid>::Ref id2;
id1 = Uuid::generateId();
id2 = Uuid::generateId();
CPPUNIT_ASSERT(*id1 != *id2);
}

107
livesupport/modules/core/src/UuidTest.h Normal file
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/*------------------------------------------------------------------------------
Copyright (c) 2004 Media Development Loan Fund
This file is part of the LiveSupport project.
http://livesupport.campware.org/
To report bugs, send an e-mail to bugs@campware.org
LiveSupport is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
LiveSupport 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with LiveSupport; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author : $Author: maroy $
Version : $Revision: 1.1 $
Location : $Source: /home/paul/cvs2svn-livesupport/newcvsrepo/livesupport/modules/core/src/UuidTest.h,v $
------------------------------------------------------------------------------*/
#ifndef UuidTest_h
#define UuidTest_h
#ifndef __cplusplus
#error This is a C++ include file
#endif
/* ============================================================ include files */
#ifdef HAVE_CONFIG_H
#include "configure.h"
#endif
#include <cppunit/extensions/HelperMacros.h>
namespace LiveSupport {
namespace Core {
/* ================================================================ constants */
/* =================================================================== macros */
/* =============================================================== data types */
/**
* Unit test for the Uuid class.
*
* @author $Author: maroy $
* @version $Revision: 1.1 $
* @see Uuid
*/
class UuidTest : public CPPUNIT_NS::TestFixture
{
CPPUNIT_TEST_SUITE(UuidTest);
CPPUNIT_TEST(firstTest);
CPPUNIT_TEST_SUITE_END();
protected:
/**
* A simple test.
*
* @exception CPPUNIT_NS::Exception on test failures.
*/
void
firstTest(void) throw (CPPUNIT_NS::Exception);
public:
/**
* Set up the environment for the test case.
*/
void
setUp(void) throw ();
/**
* Clean up the environment after the test case.
*/
void
tearDown(void) throw ();
};
/* ================================================= external data structures */
/* ====================================================== function prototypes */
} // namespace Core
} // namespace LiveSupport
#endif // UuidTest_h