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boost::recursive_mutex for thread-safe logging crashing
by Ani Taggu 03 Sep '02

03 Sep '02

Hello: I have a simple class to do simple thread-safe logging using recursive_mutex as shown below. The problem is, once in a while, it causes any thread to die while it tries to log. I haven't been able to isolate why this happens. Is recursive_mutex being used correctly? The logging is done like so: extern FileLogger &TheLog() { static g_log("my.log"); return g_log; } TheLog() << "Hello World" << endl; I am using boost 1_28 with MSVC 6 SP5. ---------------------------------------------------------------------------- ------------------ #include <fstream> #include <string> #include "boost/thread/recursive_mutex.hpp" class FileLogger { public: // set second arg = false to do no logging. FileLogger(const std::string &logName, bool log=true) : log_(log) { if (log_) { strm_.open(logName.c_str(), std::ios::ate); } } // logging can be accessed from any thread. template <typename T> std::ostream & operator<< (T d) { if (log_) { boost::recursive_mutex::scoped_lock l(strmMutex_); strm_ << d; } return strm_; } ~FileLogger() { if (log_) { strm_.close(); } } private: std::ofstream strm_; boost::recursive_mutex strmMutex_; bool log_; };

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RE: [Boost-Users] tuple and enums
by Tom Matelich 03 Sep '02

03 Sep '02

Hello Jaakko, Thanks for replying. It works if the constructor is written cons() {} Is there any purpose to putting those default calls there? Tom > From: Jaakko Jarvi [mailto:jajarvi@cs.indiana.edu] > Sent: Thursday, August 29, 2002 8:16 AM > > Hi Tom, > > Your code compiles fine with gcc 3.x and icc 6 (linux), so it may just > be gcc 2.96 problem. > > Cheers, Jaakko > > On Wed, 28 Aug 2002, Tom Matelich wrote: > > > It appears that an enum cannot be default constructed in > the way that > > tuple > > does, > > cons() : head(), tail() {} > > > > Any idea on how to get around this (besides using an int in > the tuple)? > > > > Thanks, > > Tom > > > > > > <sample_code> > > > > #include <boost/tuple/tuple.hpp> > > #include <string> > > > > enum Foo { Willis, Arnold }; > > > > void test() > > { > > boost::tuple<Foo, std::string> a; > > } > > > > </sample_code> > > > > </error compiler="gcc version 2.96 20000731 (Mandrake Linux 8.2)"> > > > > > /usr/local/eddynet/opt/include/boost/tuple/detail/tuple_basic.hpp: In > > method > > `boost::tuples::cons<HT, > > TT>::cons () [with HT = Foo, TT = boost::tuples::cons<string, > > boost::tuples::null_type>]': > > > /usr/local/eddynet/opt/include/boost/tuple/detail/tuple_basic.hpp:454: > > instantiated from `boost::tuples::tuple<T0, T1, T2, T3, T4, > T5, T6, T7, > > T8, > > T9>::tuple () [with T0 = Foo, T1 = string, T2 = > > boost::tuples::null_type, T3 > > = boost::tuples::null_type, T4 = boost::tuples::null_type, T5 = > > boost::tuples::null_type, T6 = boost::tuples::null_type, T7 = > > boost::tuples::null_type, T8 = boost::tuples::null_type, T9 = > > boost::tuples::null_type]' > > tuple_enum_test.cpp:8: instantiated from here > > > /usr/local/eddynet/opt/include/boost/tuple/detail/tuple_basic.hpp:263: > > cannot convert `int' to `Foo' in > > assignment > > > > </error> > > > > > > > -------------------------------------------------------------- > --------- > > DISCLAIMER: Information contained in this message and/or > > attachment(s) may contain confidential information of Zetec, Inc. > > If you have received this transmission in error, please notify > > the sender by return email. > > > -------------------------------------------------------------- > --------- > > > > Yahoo! Groups Sponsor > > ADVERTISEMENT > > > > Info: <http://www.boost.org> > > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> > Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > -- -- -- Jaakko Järvi email: jajarvi(a)cs.indiana.edu -- Post Doctoral Fellow phone: +1 (812) 855-3608 -- Pervasive Technology Labs fax: +1 (812) 855-4829 -- Indiana University, Bloomington Info: <http://www.boost.org> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

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RE: [Boost-Users] tokenizer
by Jim.Hyslop 03 Sep '02

03 Sep '02

Vijay (macrodisk(a)yahoo.com) wrote: > Is there anyway I can combine two tokens and check it as single one? > > I want to divide my string when both "-" and ">" occur together: > > Cell 12-1 -> xyz... > > I want to get the first token as Cell 12-1, how can I achive this via > tokenizer? I haven't used the tokenizer, but it seems to me that your TokenizerFunction can peek at the character after the '-' to see if it is a '>', to determine whether it should treat the '-' as a regular character or part of a separator. -- Jim

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Problems with MSVC-STLPORT toolset
by davlet_panech 03 Sep '02

03 Sep '02

Hello, I'm having problems building release 1.28 with MSVC 6/STLPort 4.5.3/bjam on Windows NT 4. It seems that bjam tries to make a very VERY deep directory tree which at some point becomes too large due to path name limitations. By looking at the trace messages it seems something is very wrong there :) -- the directory tree is modelled after the command line options with some of the options repeated with different values at different levels in the tree. For example the following target fails (and there a few cases similar to this one; so that nothing gets compiled): mkdir libs\regex\build\bin\libboost_regex.lib\msvc- stlport\stlport-iostream-on\debug-symbols-on\exception-handling- on\inlining-off\optimization-off\rtti-on\runtime-build-debug\runtime- link-dynamic\stlport-cstd-namespace-std\stlport-iostream-off ...failed MkDir1 libs\regex\build\bin\libboost_regex.lib\msvc- stlport\stlport-iostream-on\debug-symbols-on\exception-handling- on\inlining-off\optimization-off\rtti-on\runtime-build-debug\runtime- link-dynamic\stlport-cstd-namespace-std\stlport-iostream-off... Notice how the path includes both stlport-iostream-off and stlport- iostream-on components. The command line I was using: bjam \ -sTOOLS=msvc-stlport \ -sBUILD=stlport-iostream-on -sSTLPORT_4.5.3_PATH="h:\PROGRA~1\MICROS~1\VC98\INCLUDE\stlport" The MSVC-specific environment was set up correctly (MSVCDir, INCLUDE, LIB). The STLPORT_4.5.3_PATH points to the directory containing the STLPort headers. What am I doing whrong? Thanks, D.P.

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[bind] does bind do overload resolution?
by Alex Henderson 02 Sep '02

02 Sep '02

Hi, I'd like boost::bind to use overloaded member functions, but get an internal compiler error. Does bind support overload resolution, or is my compiler at fault? (...or more likely the code!) system = C++Builder 5 (patched), Win2k, boost_1_28_0 example (simplified) code below Thanks, Alex //-------------------------------------------------------------------- ------- #include <string> #include <vector> #include <iostream> #include <boost/bind.hpp> //-------------------------------------------------------------------- ------- struct part { std::string name; int id; part(std::string name, int id) : name(name), id(id) {} bool is(int test) { return id == test; } // bool is(std::string test) { return name == test; } // uncomment for error }; //-------------------------------------------------------------------- ------- int main() { int x = 6; // swap comments here for error // std::string x("handle"); // swap comments here for error std::vector<part> parts; part a("top", 3); parts.push_back(a); part b("spout", 6); parts.push_back(b); part c("handle", 9); parts.push_back(c); std::vector<part>::iterator it = std::find_if(parts.begin(), parts.end(), boost::bind(&part::is, _1, x)); std::cout << it->name << std::endl; return 0; } //-------------------------------------------------------------------- -------

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Question about scoped_ptr.hpp and config.hpp
by eldritchshadows 31 Aug '02

31 Aug '02

Is there a reason that scoped_ptr.hpp doesn't have config.hpp up at the top like shared_ptr.hpp? When I included it, it got rid of a lot of MSVC++ warnings. Nathan

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shared_ptr and make_indirect_iterator
by Richard Wolf 31 Aug '02

31 Aug '02

Hi I'm trying to use make_indirect_iterator on a container of shared_ptrs as follows: #include <boost/iterator_adaptors.hpp> #include <boost/shared_ptr.hpp> #include <list> #include <algorithm> #include <functional> using std::mem_fun_ref; using std::mem_fun; using std::list; using boost::shared_ptr; using std::for_each; using boost::make_indirect_iterator; class A { public: void f(){} }; int main() { list<A *> List1; list<shared_ptr<A> > List2; // This works for_each(make_indirect_iterator(List1.begin()), make_indirect_iterator(List1.end()), mem_fun_ref(&A::f)); // This doesn't work for_each(make_indirect_iterator(List2.begin()), make_indirect_iterator(List2.end()), mem_fun_ref(&A::f)); } The second use of for each fails to compile (error messages at the end of the message). Is it possible to do this? Am I doing something wrong? I'm using gcc v 2.95.2. and the QNX OS. Thanks Richard QCC -I/home/rwolf/boat/src/includes -I/home/rwolf/boat/src/boost_1_27_0 -Wal l -L/home/rwolf/boat/src/lib -L. -O -g -I/home/rwolf/boat/src/includes -I/h ome/rwolf/boat/src/boost_1_27_0 -Wall test.cpp -o test /usr/include/xutility: In instantiation of `std::iterator_traits<boost::shared_ptr<A> >': /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1104: instantiated from `boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::all ocator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: instantiated from here /usr/include/xutility:81: no type named `iterator_category' in `class boost::shared_ptr<A>' /usr/include/xutility:82: no type named `value_type' in `class boost::shared_ptr<A>' /usr/include/xutility:83: no type named `difference_type' in `class boost::shared_ptr<A>' /usr/include/xutility:84: no type named `difference_type' in `class boost::shared_ptr<A>' /usr/include/xutility:85: no type named `pointer' in `class boost::shared_ptr<A>' /usr/include/xutility:86: no type named `reference' in `class boost::shared_ptr<A>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp: In instantiation of `boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::all ocator<boost::shared_ptr<A> > >::iterator>': /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: instantiated from here /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1104: no type named `value_type' in `struct std::iterator_traits<boost::shared_ptr<A> >' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1105: no type named `reference' in `struct std::iterator_traits<boost::shared_ptr<A> >' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1106: no type named `pointer' in `struct std::iterator_traits<boost::shared_ptr<A> >' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp: In function `int main()': /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: no type named `value_type' in `struct boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::allo cator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: no type named `reference' in `struct boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::allo cator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: no type named `pointer' in `struct boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::allo cator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: template argument 2 is invalid /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: template argument 3 is invalid /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: template argument 5 is invalid /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp: At top level: /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp: In instantiation of `boost::make_indirect_iterator<std::list<boost::shared_ptr<A>,std::allocator <boost::shared_ptr<A> > >::iterator>(...)': test.cpp:26: instantiated from here /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: no type named `value_type' in `struct boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::allo cator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: no type named `reference' in `struct boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::allo cator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: no type named `pointer' in `struct boost::detail::traits_of_value_type<std::list<boost::shared_ptr<A>,std::allo cator<boost::shared_ptr<A> > >::iterator>' /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: template argument 2 is invalid /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: template argument 3 is invalid /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: template argument 5 is invalid /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp: In function `{error} boost::make_indirect_iterator<std::list<boost::shared_ptr<A>,std::allocator< boost::shared_ptr<A> > >::iterator>(...)': /home/rwolf/boat/src/boost_1_27_0/boost/iterator_adaptors.hpp:1177: confused by earlier errors, bailing out cc: /usr/lib/gcc-lib/ntox86/2.95.2/cc1plus error 34 make: *** [test] Error 1

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tokenizer
by Vijay 30 Aug '02

30 Aug '02

Hello, Is there anyway I can combine two tokens and check it as single one? I want to divide my string when both "-" and ">" occur together: Cell 12-1 -> xyz... I want to get the first token as Cell 12-1, how can I achive this via tokenizer? Thank you, Vijay

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msvc-stlport build problems
by David Resnick 30 Aug '02

30 Aug '02

Hi, I'm trying to build boost version 1.28.0, msvc-stlport build, using the following line: bjam -sTOOLS=msvc-stlport -sstlport-iostream=on -sSTLPORT_PATH=c:\etc I have no problems building the msvc build. It seems to me that the problem has to do with the MS Platform SDK that I have installed. When compiling STLPort (version 4.5.3) I had similar warnings. 2 work arounds that I found there were either to remove the platform SDK from the include enviroment variable, or (when I found it) to define _STLP_NEW_PLATFORM_SDK in stl_user_config.h. I've tried variations of that with compiling Boost, but nothing makes a difference. I've included the error messages that I get for most files. ---------------------------- CUT HERE ---------------------------- vc-C++ libs\regex\build\bin\libboost_regex.lib\msvc-stlport\debug\runtime-link- dynamic\stlport-cstd-namespace-std\stlport-ios tream-off\stlport-version-4.5.3\c_regex_traits.obj c_regex_traits.cpp C:\PROGRA~1\MICROS~3\VC98\include\winbase.h(1011) : error C2733: second C linkage of overloaded function 'InterlockedIncremen t' not allowed C:\PROGRA~1\MICROS~3\VC98\include\winbase.h(1009) : see declaration of 'InterlockedIncrement' C:\PROGRA~1\MICROS~3\VC98\include\winbase.h(1018) : error C2733: second C linkage of overloaded function 'InterlockedDecremen t' not allowed C:\PROGRA~1\MICROS~3\VC98\include\winbase.h(1016) : see declaration of 'InterlockedDecrement' C:\PROGRA~1\MICROS~3\VC98\include\winbase.h(1026) : error C2733: second C linkage of overloaded function 'InterlockedExchange ' not allowed C:\PROGRA~1\MICROS~3\VC98\include\winbase.h(1023) : see declaration of 'InterlockedExchange' "cl" /Zm400 -nologo -GX -c -DBOOST_REGEX_NO_LIB=1 -DBOOST_REGEX_STATIC_LINK=1 -D_STLP_NO_SGI_IOSTREAMS=1 -D_STLP_DO_IMP ORT_CSTD_FUNCTIONS=1 -D_STLP_DEBUG=1 -D_STLP_DEBUG_UNINITIALIZED=1 -D_STLP_NEW_PLATFORM_SDK=1 /Z7 /Od /Ob0 /GX /GR /MDd -I "libs\regex\build" -I"C:\etc\boost_1_28_0" -I"c:\etc\STLport-4.5.3\stlport" -I"C:\PROGRA~1\MICROS~3\VC98\include" -Fo"libs \regex\build\bin\libboost_regex.lib\msvc-stlport\debug\runtime-link-dyna mic\stlport-cstd-namespace-std\stlport-iostream-off\s tlport-version-4.5.3\c_regex_traits.obj" -Tp"libs\regex\build\../src\c_regex_traits.cpp" ...failed vc-C++ libs\regex\build\bin\libboost_regex.lib\msvc-stlport\debug\runtime-link- dynamic\stlport-cstd-namespace-std\s tlport-iostream-off\stlport-version-4.5.3\c_regex_traits.obj... ---------------------------- CUT HERE ---------------------------- Thanks in advance, David Resnick MobileSpear Inc.

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BJam and XEmacs on WinXP
by Dan Muller 30 Aug '02

30 Aug '02

This may be a tad off-topic, but I couldn't find any reference to this relative to XEmacs, and the problem seems to be peculiar to bjam. If I try to run bjam under XEmacs, e.g. via M-x compile, M-x shell-command, or even from inside an XEmacs shell buffer (running CMD), I get the error "spawn: Invalid argument". More specifically, if I run it via shell-command, I get this: ===================== ...found 331 targets... ...updating 1 target... gcc-Archive-action ..\phys_sim\bin\libphys_sim.lib\gcc-nocygwin\debug\architecture-native\debug-symbols-on\inlining-off\optimization-off\profiling-off\rtti-on\runtime-build-debug\runtime-link-dynamic\threading-single\vtable-thunks-default\libphys_sim.lib spawn: Invalid argument ====================== ... which indicates that bjam is in fact starting, but has some problem. Or maybe the tools do. If I run it in the same directory from a regular command window, it works fine. I'm running XEmacs 21.4, with recently updated packages. The bjam executable was downloaded yesterday. (I'm trying to use it for something other than Boost, BTW.) The toolset I'm using is MinGW, the latest stable full-package release, with no package updates. Anyone have an idea what might be wrong? I'm getting tired of looking at my build output in a command window and then hunting for line numbers in my source code. :-)

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