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Compiling concern using Diab 4.4b compiler w.r.t inclusion of Regular expression(regex) library
by Vikram Inoli 15 Nov '11

15 Nov '11

Hi, Greetings, I have been an active user of the Boost Regex Library, off late, and have been attempting to include this library into my project. I am still unsuccessful with all my efforts to include the library. I require to include only the regular expression library into my project, and hence have tried to build the same using the ../ boost_1_47_0/libs/regex/build/ generic.mak file, but was unsuccessful. I could compile the regex library using the gcc compiler with the below configuration # gcc -v Reading specs from /usr/lib/gcc/i686-pc-cygwin/3.4.4/specs Configured with: /usr/build/package/orig/test.respin/gcc-3.4.4-3/configure --verbose --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/ lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --enable-languages=c,ada,c++,d,f77,pascal,java,objc --enable-nls --without -included-gettext --enable-version-specific-runtime-libs --without-x --enable-libgcj --disable-java-awt --with-system-zlib --enable-interpreter --disa ble-libgcj-debug --enable-threads=posix --enable-java-gc=boehm --disable-win32-registry --enable-sjlj-exceptions --enable-hash-synchronization --enabl e-libstdcxx-debug Thread model: posix gcc version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) Make File excerpt: INCLUDES= DTOF = MCF5270FS:simple CCDIR = c:/diab/4.4b/WIN32/bin CMN_CFLAGS = \ -Y I,diab4.4b_includes -XO -Xforce-prototypes -Xkeywords=0x08 -I. -Xkill-opt=0x010000 -Xenum-is-best -Xframe-ptr -Xlicense-wait -Xinline-explicit-force=100 -Xcomdat -Xexceptions-off # CXXFLAGS= extra compiler options - note applies to all build variants CXXFLAGS = \ -Xexceptions-off \ $(CMN_CFLAGS) LDFLGS = -YS,. -m2 -lm -lc -ld CXX = $(CCDIR)/dplus -t$(DTOF) AS = $(CCDIR)/das -t$(DTOF) LD = $(CCDIR)/dld $(LDFLGS) -t$(DTOF) DD = $(CCDIR)/ddump AR = $(CCDIR)/dar Compiler details: # ./dplus -VV C:\diab\4.4b\win32\bin\dplus.exe Rel 4.4 Rev b Copyright 1986-2001 Wind River Systems, Inc. build date and time: Jun 1 2001 15:11:48 Table: ACE ELFEMB mnem. Rel 4.4b Generate user.hpp file to match compiler configurations: I tried to configure the compiler by following the instruction provided in "Using the configure script<http://www.boost.org/doc/libs/1_47_0/libs/config/doc/html/index.html#boost_…>" described in http://www.boost.org/doc/libs/1_47_0/libs/config/doc/html/index.html#config…, but encountered the following errror: 998838@MIIPL-WF-26 /cygdrive/e/boost_1_47_0/boost_1_47_0/libs # cd config 998838@MIIPL-WF-26 /cygdrive/e/boost_1_47_0/boost_1_47_0/libs/config # export CXX="c:/diab/4.4b/WIN32/bin/dplus -tMCF5270FS:simple" 998838@MIIPL-WF-26 /cygdrive/e/boost_1_47_0/boost_1_47_0/libs/config # export CXXFLAGS="-Y I,diab4.4b_includes -XO -Xforce-prototypes -Xkeywords=0x08 -I. -Xkill-opt=0x010000 -Xenum-is-best -Xframe-ptr -Xlicense-wait -Xinline-explicit-force=100 -Xcomdat -Xexceptions-off" 998838@MIIPL-WF-26 /cygdrive/e/boost_1_47_0/boost_1_47_0/libs/config # export LDFLAGS="-YS,. -m2 -lm -lc -ld" 998838@MIIPL-WF-26 /cygdrive/e/boost_1_47_0/boost_1_47_0/libs/config # sh ./configure *** ./configure: boost configuration utility *** Please stand by while exploring compiler capabilities... Be patient - this could take some time... Note that this test script only gives an approximate configuration - you will need to test the results carefully using the boost regression test suite before using the results. *** Info : .cpp used as extension for tests checking for boost main tree... ./../.. checking for C++ compiler default output file name... configure: error: C++ compiler cannot create executables See `config.log' for more details. Reference Attachment 1: "config.log". Reference Attachment 2: "user.hpp" - Current configurations that is included to compile the regex library. ________________________________ The following are the internal errors that I encounter while compiling the regex library. Error 1: "..\boost/mpl/aux_/integral_wrapper.hpp", line 72: internal compiler error (dplus:1000): - ctoi_mang_expr() please contact support(a)ddi.com<mailto:support@ddi.com> Error 2: ".\boost/concept_archetype.hpp", line 44: internal compiler error (dplus:1308): - assertion 'istmplfuncdef(dcl) || istmplfuncspec(dcl)' failed at ./.. /src/dparse/cdcl.c:2932\n please contact support(a)ddi.com<mailto:support@ddi.com> Kindly provide suggestions or alternates that I could try to proceed further. Thanks, Warm regards Vikram Inoli Vikram dot inoli at lnties dot com Larsen & Toubro Limited www.larsentoubro.com This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system.

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BOOST ASIO Strange behaviour
by Gokulakannan Somasundaram 15 Nov '11

15 Nov '11

Hi, Boost Version : 1.47, OS : Windows 7 I am noticing consistently that DEBUG Version of ASIO is slightly faster than the Release version consistently. The difference is around 5-10%. I checked with the Boost Echo Server and HTTP Server and i was able to reproduce this behavior. It looks strange to me. This occurs when the client and server are in different machines. Can someone explain me on this? ( Nagle's algorithm was disabled in both the cases ) Thanks, Gokul.

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[serialization] unwinding "stack" of object during loading
by Igor R 15 Nov '11

15 Nov '11

Hello, Consider the following structure: struct outer { inner_type1 inner1_; inner_type2 inner2_; template<class Archive> void HostPort::load(Archive &ar, const unsigned int version) { ar >> BOOST_SERIALIZATION_NVP(inner1_); ar >> BOOST_SERIALIZATION_NVP(inner2_); } }; Assume that loading of inner1_ throws exception. Is there a way to "unwind" the "stack" of objects gracefully (i.e. to skip until some "end" marker of inner1_), and to proceed loading the next inner object normally? Thanks.

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Dijkstra Visitor examine_edge usage
by giridhar 15 Nov '11

15 Nov '11

Hello All, I have to use Dijkstra's visitor in my project to check a minimum condition on each edge in the shortest path. But I am not sure how to use it with bundled edge properties. Can anyone give me a good overview of how to implement examine_edge() in Dijkstra visitor concept. Below are the details. struct Edgep { int edge_index; int edge_w; std::string edge_name; int capacity; }; Graph as: typedef subgraph< adjacency_list<vecS, vecS, undirectedS, Vertexp, property< edge_index_t, unsigned int, Edgep > > > Graph; Shortest path is based on edge_w and I want to check for the minimum condition on this metric through visitor's examine_edge() function. If someone can give a simple example code for understanding the usage and implementing examine_edge() in Dijkstra visitor concept, then I can go further from there. I actually had a look at it in the documentation but I could not follow that example. Just a simple example would be of great help for me. -- Regards, Giridhar

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[graph] adjacency_list constructor fails, wrong usage?
by Christoph 15 Nov '11

15 Nov '11

Hi, I originally wanted to construct an undirected graph from a directed graph and vice versa. For this purpose i tried to use template <class EdgeIterator> adjacency_list(EdgeIterator first, EdgeIterator last, vertices_size_type n, edges_size_type m = 0, const GraphProperty& p = GraphProperty()) as shown in http://www.boost.org/doc/libs/1_47_0/libs/graph/doc/adjacency_list.html but i do not even manage to construct a graph from the same type with this constructor. What am i missing? Please have a look at the example below. If you uncomment the last two lines, the code will not compile. // begin code #include <iostream> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/graph_utility.hpp> int main(int argc, char** argv) { typedef boost::adjacency_list < boost::listS, boost::vecS, boost::directedS> Dgraph; typedef boost::adjacency_list < boost::listS, boost::vecS, boost::undirectedS> Graph; Dgraph g(5); add_edge (0,1,g);add_edge (2,3,g);add_edge (4,5,g); print_graph (g, boost::get(boost::vertex_index, g)); boost::graph_traits<Dgraph>::edge_iterator i1 = (edges(g)).first; boost::graph_traits<Dgraph>::edge_iterator i2 = (edges(g)).second; // Dgraph g2 = Dgraph (i1, i2, num_vertices (g), num_edges (g)); // print_graph (g2, boost::get(boost::vertex_index, g2)); return 0; } // end code best regards Christoph

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Using an mpl sepquence as a template parameter
by paul Fultz 14 Nov '11

14 Nov '11

Hi, I have class that takes an mpl sequence as its parameter like this: X<mpl::vector<A, B, C> > And I would like to be able to have the class be used without explicitly declaring the mpl sequence like this: X<A, B, C> I know this could be accomplished using variadic template parameters, but I am using an older compiler. I was wondering if there was a macro in boost to do this, such as: template<BOOST_MPL_VARIADIC_PARAM_PACK(T)> class X { typedef mpl::vector<BOOST_MPL_VARIADIC_PARAM_UNPACK(T)> type; }; If a macro is not available, does anyone know how I could write a macro like this? Or what is the default type used for mpl sequences when a type is unspecified? Thanks, Paul

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Using an mpl sepquence as a template parameter
by paul Fultz 14 Nov '11

14 Nov '11

Hi, I have class that takes an mpl sequence as its parameter like this: X<mpl::vector<A, B, C> > And I would like to be able to have the class be used without explicitly declaring the mpl sequence like this: X<A, B, C> I know this could be accomplished using variadic template parameters, but I am using an older compiler. I was wondering if there was a macro in boost to do this, such as: template<BOOST_MPL_VARIADIC_PARAM_PACK(T)> class X { typedef mpl::vector<BOOST_MPL_VARIADIC_PARAM_UNPACK(T)> type; }; If a macro is not available, does anyone know how I could write a macro like this? Or what is the default type used for mpl sequences when a type is unspecified? Thanks,Paul

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How to use boost::iostreams filter directly
by Allan Nielsen 14 Nov '11

14 Nov '11

Hi How can I use boost::iostreams::gzip_decompressor to decompress a sequence of boost::asio::streambuf's? Here is what I had in mind (non-working pseudo code): struct Foo { public: void sinkData(boost::asio::streambuf & buf) { z.write(boost::asio::buffer_cast<const char*>(buf.data()), buf.size()); while(write()); } void flush() { z.flush(); while(write()); } private: bool write() { char buf[1024]; size_t s = z.read(buf, 1024); std::cout << std::string(buf, s) << std::endl; return } gzip_decompressor z; } The sinkData and the flush functions can not be changed. sinkdata() is called a number of times, followed by a single call to flush(). Is boost::iostreams::gzip_decompressor the best library for this purpose, if so how to do it? Otherwise, what could else be suggested? Best regards Allan W. Nielsen

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[smart_ptr] Reinterpret_pointer_cast()?
by Robert Jones 14 Nov '11

14 Nov '11

Even as I ask this I suspect the answer is obvious and I can't see it, but is there any reason why there is no reinterpret_pointer_cast() function for shared_ptr's? Thx, - Rob.

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Using boost Barser to extract data from string
by Gaurav Shah 14 Nov '11

14 Nov '11

> > Hi, > I want to write parser for data I receive from a stock exchange server. > There is no delimeter that define different fields in buffer I receive. > However, it is provided in exchange spec's start and of each field. > How should I write parser for data I recveive? I am new to parser consept > and apprecite your suggestion. > I am putting following example data string just to insist my scenario > > Data my application recveive: > 1001TXPASSWORDSESSION1N > > I need to decode it(as per spec) as: > Messate type: 1001 > UserID: TX > password: PASSWORD > session: SESSION > data: N > > How should I be doing it? > > Thank You, > Gaurav >

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