- Boost-users - lists.boost.org

Error locating MSVCP80D.DLL MSVCR80D.DLL from Boost libraries boost-*-vc80-mt-gd-1_34_1.dll
by Erignac, Charles A 18 Mar '08

18 Mar '08

My boost dependent applications fail to start in debug mode: error 14001. The dependency walker cannot locate the VC-8.0 runtime dlls referenced by the boost-*-vc80-mt-gd-1_34_1.dll libraries I build on my machine. That is the multi-threaded debug dll runtime: MSVCP80D.DLL, MSVCR80D.DLL. The binary distribution I got from boost.com has the same problem. This is related to the side-by-side configuration rather than making sure that the runtime dlls are in my path. A default win32 console project from VC-8.0 links fine in multi-threaded debug dll runtime mode. Also, a dll compiled in the VC-8.0 IDE referencing boost will resolve the runtime correctly but the associated boost dlls won't. Thus the dependency walker will also report unresolved runtime dlls/ I have re-installed VC-8.0 but without success. I also have VC-7.1 on my machine. Help is greatly appreciated. Best regards, Charles

3 2

Ugly warnings from BOOST_STATIC_ASSERT
by Erik 18 Mar '08

18 Mar '08

We have this really neat and simple macro in our project: #define compile_assert(x) typedef bool COMPILE_ASSERT[(x) ? 1 : -1] Although it does what we need and serves us well, I tried to replace it with BOOST_STATIC_ASSERT. Unfortunately this resulted in a lot of ugly warnings throughout the compile: warning: use of old-style cast Is there any chance to get this fixed?

3 4

boost/thread/detail/singleton.hpp : link error with VS 2008 and \clr option
by jean marc Mercier 18 Mar '08

18 Mar '08

Hello, I am using boost 1.34.1 and Visual C++ 2008. I use, among other boost facilities, the threaded singleton pattern included in #include <boost/thread/detail/singleton.hpp> This singleton just work fine when compiled withouth the /clr (common langage runtime) option. But, when the \clr option is active, I get 6 link error (LNK2019) : see bottom of message. At present time, the only workaround I have found is to comment the #include <boost/thread/detail/config.hpp> contained in <boost/thread/detail/singleton.hpp>. Did I misused something ? Thank you in advance for suggestions in this direction. Jean-Marc 1>libboost_thread-vc80-mt-gd-1_34_1.lib(tss.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::_Container_base::~_Container_base(void)" (__imp_??1_Container_base@std@@QAE@XZ) referenced in function "public: __thiscall std::_Vector_val<class boost::function1<void,void *,class std::allocator<class boost::function_base> > *,class std::allocator<class boost::function1<void,void *,class std::allocator<class boost::function_base> > *> >::~_Vector_val<class boost::function1<void,void *,class std::allocator<class boost::function_base> > *,class std::allocator<class boost::function1<void,void *,class std::allocator<class boost::function_base> > *> >(void)" (??1?$_Vector_val@PAV?$function1@XPAXV?$allocator@Vfunction_base@boost@@@std@@@boost@@V?$allocator@PAV?$function1@XPAXV?$allocator@Vfunction_base@boost@@@std@@@boost@@@std@@@std@@QAE@XZ) etc...

1 0

intrusive_ptr.hpp recursively including itself?
by framebuffer 18 Mar '08

18 Mar '08

Hello, I am using boost version 1.34. I installed prebuilt libraries and have not modified them in any way. When I try to compile the following program: #include <iostream> #include "boost/signals.hpp" void my_first_slot() { std::cout << "void my_first_slot()\n"; } class my_second_slot { public: void operator()() const { std::cout <<"void my_second_slot::operator()() const\n"; } }; int main() { boost::signal<void ()> sig; sig.connect(&my_first_slot); sig.connect(my_second_slot()); std::cout << "Emitting a signal...\n"; sig(); } I get the error: Error 1 fatal error C1014: too many include files : depth = 1024 d:\program files (x86)\boost\boost_1_34_0\boost\intrusive_ptr.hpp 1 Upon inspection I found that the intrusive_ptr.hpp is including itself. http://www.nabble.com/file/p16075513/intrusive_ptr.hpp intrusive_ptr.hpp The header of the file is as follows: #include <boost/detail/lightweight_test.hpp> #include <boost/intrusive_ptr.hpp> #include <boost/detail/atomic_count.hpp> #include <boost/config.hpp> #include <algorithm> #include <functional> When I try to use include guards it doesn't work either. I tried to find the answer in google but it seems I'm the only one having this problem. What is wrong here? Thanks. -- View this message in context: http://www.nabble.com/intrusive_ptr.hpp-recursively-including-itself--tp160… Sent from the Boost - Users mailing list archive at Nabble.com.

2 2

Boost-1.35
by Surya Kiran Gullapalli 18 Mar '08

18 Mar '08

I've recently upgraded my compiler from gcc-4.2 to gcc-4.3 and found that boost compilation is failing with an error saying undefined symbol CHAR_BIT. I've gone thru mailing list and found out this is fixed in cvs version (which is upcoming boost-1.35) Now my question is When is boost-1.35 expected? Surya

3 5

what permutation_iterator base returns
by Abir Basak 18 Mar '08

18 Mar '08

Hi, though the document says the boost permutation_iterator base returns an element iterator, but it seems actually returns the index iterator. eg, typedef std::vector<int> VI;///index iterator VI v; v+=1,3,4;///indices typedef std::vector<double> VF;///element iterator VF v1; v1+=0.5,1.5,2.5,3.5,4.5,5.5,6.5,7.5;///elements typedef boost::permutation_iterator<VF::iterator,VI::iterator> PI; PI b1 = boost::make_permutation_iterator(v1.begin(),v.begin()); PI e1 = boost::make_permutation_iterator(v1.begin(),v.end()); for(PI it = b1; it!= e1; ++it){ std::cout<<"IT "<<*it<<" B "<<*it.base()<<" "; } what i need is to compare the permutation iterator with an original iterator (i.e VF::iterator with PI like if(v1.begin()+1 == b1) or if(v1.begin()+1 == b1.base()) in this case which should return true) but i am not finding any such way to compare these two iterators .... thanks abir

1 0

Boost Selected for Google Summer of Code 2008
by Jeff Garland 18 Mar '08

18 Mar '08

For the third year in a row Boost has been selected as a mentoring organization for Google Summer of Code. If you're a student this is a great opportunity to contribute to Boost and make a few dollars over the summer. If you're interested here's some links to get you started. http://code.google.com/opensource/gsoc/2008/faqs.html http://code.google.com/soc/2008/boost/about.html We have a few project ideas at: http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?Google_Summe… but, if you've got your own idea that's fine too. Best to put your ideas out on the development list for writing an application -- that's the best way to be sure the mentors think your project has merit. Here's some important dates to keep in mind: March 24: ~12 noon PDT / 19:00 UTC Student application period opens. March 31: 5:00 PM PDT / 00:00 UTC April 1, 2008 Student application deadline. Full timeline is here: http://code.google.com/opensource/gsoc/2008/faqs.html#0.1_timeline Jeff

1 0

BoostCon 2008 -- Session Announcement
by Jeff Garland 18 Mar '08

18 Mar '08

I'm happy to announce that the preliminary 2008 BoostCon program is on the web site. http://www.boostcon.com/program/sessions I'm quite pleased and excited with the program. We have tutorials and lectures on many core Boost libraries with topics including threading, serialization, networking, C++0x features, high performance generic programming, text processing, and more. We will also have a new 'Library in a Week' workshop to extend Boost.Algorithm. A new feature this year, based on feedback from last year, will be Author's Corner sessions where library authors discuss and answer questions about their libraries. And, finally, Bjarne Stroustrup with the keynote address. We hope to have the final program and schedule completed shortly. Note that while these sessions represent the bulk of the program we have a few more sessions in the works and are still looking for a couple more sessions to fill out the program. So, if you've been thinking of submitting a session please do it as soon as possible. http://www.boostcon.com/program/call-for-sessions Thanks, Jeff

1 0

Threads Don't Take Turns Under Linux (Ubuntu Gutsy Gibbon)
by Hal Vaughan 17 Mar '08

17 Mar '08

I apologize if this gets posted more than once. I found the group on GMane, tried to post, joined the email list, then tried to post several times but still have yet to see it show up. I'm learning C++ and found a tutorial on threads with Boost on Dr. Dobb's site. I've copied the code from this url: http://www.ddj.com/cpp/184401518?pgno=5 It's supposed to fill a buffer with data on one thread and remove data on the other thread. I would expect it to add data and remove at almost the same time but when I run it, it adds 10 items, then removes them, then adds ten again, and so on. It's never adding and removing in an "interleaved" fashion. I've also tried the same with simple counters where both threads count to ten, but it doesn't seem to make a difference. It seems no matter how I set it up, one thread either completes, or runs until it has to stop for a mutex, then the other thread runs. It seems that there is never a case of both threads running at the same time. I've never had trouble doing this in Perl with fork() so I'm not at all sure what could be going wrong. As I said, it's not just the program below, it seems to be any program that uses more than one thread. Am I doing something wrong or is there a setting I need to change? I'm compiling it with "g++ -lboost_thread mthrd.cpp -o mthrd && ./mthrd"; Thanks! Hal ------ #include <boost/thread/thread.hpp> #include <boost/thread/mutex.hpp> #include <boost/thread/condition.hpp> #include <iostream> const int BUF_SIZE = 10; const int ITERS = 100; boost::mutex io_mutex; class buffer { public: typedef boost::mutex::scoped_lock scoped_lock; buffer() : p(0), c(0), full(0) { } void put(int m) { scoped_lock lock(mutex); if (full == BUF_SIZE) { { boost::mutex::scoped_lock lock(io_mutex); std::cout << "Buffer is full. Waiting..." << std::endl; } while (full == BUF_SIZE) cond.wait(lock); } buf[p] = m; p = (p+1) % BUF_SIZE; ++full; cond.notify_one(); } int get() { scoped_lock lk(mutex); if (full == 0) { { boost::mutex::scoped_lock lock(io_mutex); std::cout << "Buffer is empty. Waiting..." << std::endl; } while (full == 0) cond.wait(lk); } int i = buf[c]; c = (c+1) % BUF_SIZE; --full; cond.notify_one(); return i; } private: boost::mutex mutex; boost::condition cond; unsigned int p, c, full; int buf[BUF_SIZE]; }; buffer buf; void writer() { for (int n = 0; n < ITERS; ++n) { { boost::mutex::scoped_lock lock(io_mutex); std::cout << "sending: " << n << std::endl; } buf.put(n); } } void reader() { for (int x = 0; x < ITERS; ++x) { int n = buf.get(); { boost::mutex::scoped_lock lock(io_mutex); std::cout << "received: " << n << std::endl; } } } int main(int argc, char* argv[]) { boost::thread thrd1(&reader); boost::thread thrd2(&writer); thrd1.join(); thrd2.join(); return 0; }

8 22

[tokenizer] mutable string iterator
by Christian Henning 17 Mar '08

17 Mar '08

Hi there, I would like to use the tokenizer to iterate through a string of words and reverse them. Something like this: string str( " Hello World" ); tokenizer<> tok(str); for(tokenizer<>::iterator beg=tok.begin(); beg!=tok.end();++beg) { reverse( (*beg).begin(), (*beg).end() ); } Why can't I get a mutable string iterator? Thanks, Christian

2 3