- Boost - lists.boost.org

[Multi-index] questions on max_size, incomplete docs, and common code
by Daryle Walker 02 Aug '07

02 Aug '07

I'm trying out a multi-indexed container that uses a set-like (ordered_unique) interface and a vector-like (random_access) interface. Each interface has a "max_size" member function. Could they ever return different values? Some functions, like (member) swap and clear, have no definitions given. It seems like the author assumes that we'll assume that the undefined functions work like those in STL. But I'll prefer something more precise, to (1) confirm the exact semantics and (2) know the exact complexity these functions may have. (I noticed this problem while I was trying to define the complexity of my wrapper class's member functions.) Some member functions, like the aforementioned "max_size" and "clear," seem to be same for all index styles. Could those be re-factored into the main class, like "get_allocator" is? Or would that mess up the ability to keep each index's interface independent? -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com

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Non-reentrant implementation of data_time/c_time.hpp under MS-Windows VC 8.0
by Alexis Wilke 02 Aug '07

02 Aug '07

Hi guys, In the code below, there are three severe bugs: 1. The addition of the #pragma warning instead of using the localtime_s() and gmtime_s() functions which are similar to the localtime_r() and gmtime_r() functions (the parameters are swapped.) Thus, if _MSC_VER >= 1400, you need a new implementation with the "safe" versions. 2. The documentation says: //! requires a pointer to a user created std::tm struct because the function is expected to WRITE in that buffer. At this time, it does not do so and if you don't use the returned pointer, the pointer to the user defined tm struct is useless. You are missing a couple of asterisks in there! *result = *std::localtime(t); 3. In a multi-thread environment, which you detect with some BOOST_THREAD_ENABLED flag, you must use a scoped lock to protect these calls. Lock, call, return is what I'd expect to see here (is it prohibited for the c_time.hpp file to include the thread lock mechanism?) I hope I will see these three bugs fixed in a future version. Thank you, Alexis Wilke P.S. I tried to post this text to your Trac system and it was rejected by Akismet. According to them, it is spam. #if (defined(_MSC_VER) && (_MSC_VER >= 1400)) #pragma warning(push) // preserve warning settings #pragma warning(disable : 4996) // disable depricated localtime/gmtime warning on vc8 #endif // _MSC_VER >= 1400 //! requires a pointer to a user created std::tm struct inline static std::tm* localtime(const std::time_t* t, std::tm* result) { result = std::localtime(t); return result; } //! requires a pointer to a user created std::tm struct inline static std::tm* gmtime(const std::time_t* t, std::tm* result) { result = std::gmtime(t); return result; } #if (defined(_MSC_VER) && (_MSC_VER >= 1400)) #pragma warning(pop) // restore warnings to previous state #endif // _MSC_VER >= 1400 ------------ Alexis Wilke President Made to Order Software, Corporation e-mail: alexis(a)m2osw.com cell-text: alexis.cell(a)m2osw.com (please, only small messages) Web Pages: http://www.m2osw.com http://www.turnwatcher.com Company e-mail: contact(a)m2osw.com Phone: +(1) 916 220 6482 Fax: +(1) 916 988 1450 Address: 9275 Blue Oak Drive Orangevale, California 95662 United States of America CONFIDENTIAL This document contains non-public proprietary information that is subject to restrictions on use and/or disclosure. If you are not the intended recipient, any dissemination, distribution or copying is strictly prohibited. If you think that you have received this e-mail message in error, please e-mail the sender and delete all copies. Thank you.

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Re: [boost] Boost C++/tcl integration lib
by Maciej Sobczak 01 Aug '07

01 Aug '07

Fanzhe Cui wrote: > On the boost document page it has entry of the library: > C++/Tcl - C++/Tcl is a library that allows the easy integration of C++ and > Tcl. As was already mentioned, C++/Tcl is not a Boost library. It just uses Boost. > But the pkg from ActiveState is not free. It is free: http://www.activestate.com/store/activetcl/ Follow the "Download" link to get the free package. Distributions from ActiveState are probably the most easy way to get Tcl up and running on Windows and I recommend them for use with C++/Tcl. Regards, -- Maciej Sobczak : http://www.msobczak.com/ Programming : http://www.msobczak.com/prog/

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[Accumulators] Passing construction arguments to dependent statistics
by Hugo Duncan 01 Aug '07

01 Aug '07

Given recent discussion on Time Series and Accumulators, I thought I would have a go at implementing a FIR filter for Accumulators, and have run into a problem. I decided to do this in two parts; first create a (reusable) delay statistic (similar to tail) that provides a history buffer for the signal and then create the filter (similar to tail_variate) , that will depend on the delay buffer. I have created the delay buffer with a length determined by a cache_size argument. This works well. I am now creating the filter, which has a "coefficents" argument to set the filter coefficients. I would like to pass the size of the coefficients list as the cache_size argument to the underlying delay buffer. Is this possible?

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[thread_safe_signals] assertion failure (patch)
by Rodolfo Schulz de Lima 01 Aug '07

01 Aug '07

There's a little bug in member function nolock_force_unique_connection_list which causes an assertion inside nolock_cleanup_connections because the _shared_state.unique() is false because the local variable newState also references _shared_state. The attached patch corrects this rather simple bug. Regards, Rodolfo Lima.

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[Subversion] Short down-time this evening
by Douglas Gregor 01 Aug '07

01 Aug '07

The Subversion repository will be down for a few hours (starting... now) while I work to repair some issues caused by a bug in the CVS- >SVN conversion utility. We should be back online this evening. My apologies for the short notice, but it's important to get this done *right*. - Doug

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Re: [boost] [Important] Boost Subversion repository is now online
by David Abrahams 01 Aug '07

01 Aug '07

on Tue Jul 31 2007, Beman Dawes <bdawes-AT-acm.org> wrote: > Douglas Gregor wrote: >> Hello all, >> >> The Boost Subversion repository is now back online. All of the files >> in CVS (including their histories) have been imported into the >> Subversion repository. > > After an apparently successful checkout, diff from log isn't working. > > Edit a file. Say trunk/configure. > Using TortoiseSVN, select it. Right click to get context menu. Select > diff. Works fine. > > Using TortoiseSVN, select it again if needed. Right click to get context > menu. Select show log. Works fine. Select one of the log messages. Right > click for context menu. Select Compare with working copy. > > This results in an error dialog: PROPFIND request failed on > '/svn/boost/svn/bc/36681/trunk/boost/configure' ... 207 Multi-Status > (https://svn.boost.org) Beman, Can you reproduce your problem using the canonical command-line tool? I doubt the repo maintainers are set up to test with tortoise. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com

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[function_types] [wave] Build problems (trac #1100)
by dherring＠ll.mit.edu 01 Aug '07

01 Aug '07

I hit two difficulties when building Boost from SVN-trunk. They are related to trac ticket #1100, and I tried adding some comments to it, but my changes yielded Internal Error "Submission rejected as potential spam". Here's the issue and workarounds: > svn info Path: . URL: http://svn.boost.org/svn/boost/trunk Revision: 38337 > ./configure > ./tools/jam/src/bin.linuxx86/bjam --layout=system -q ----- MkDir1 bin.v2/libs/function_types MkDir1 bin.v2/libs/function_types/build MkDir1 bin.v2/libs/function_types/build/gcc-4.1.2 MkDir1 bin.v2/libs/function_types/build/gcc-4.1.2/release MkDir1 bin.v2/libs/function_types/build/gcc-4.1.2/release/threading-multi MkDir1 /svn/boost/libs/function_types/build/timestamps Jamfile</svn/boost/libs/function_types/build>.wave /svn/boost/libs/function_types/build/timestamps/arity_loops /bin/sh: line 1: chdir: command not found /bin/sh: line 2: /svn/boost/dist/bin/wave: No such file or directory chdir /svn/boost/libs/function_types/build /svn/boost/dist/bin/wave -S/svn/boost libs/function_types/build/preprocess_arity_loops.cpp -o /svn/boost/libs/function_types/build/timestamps/arity_loops ...failed Jamfile</svn/boost/libs/function_types/build>.wave /svn/boost/libs/function_types/build/timestamps/arity_loops... ----- The file <boost>/libs/function_types/build/Jamfile.v2, contains the offending 'chdir'. When 'chdir' is changed to 'cd', the build still fails on line 2. Things finally build correctly with a > bjam --layout=system --with-wave -q Thanks, Daniel

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Re: [boost] Boost C++/tcl integration lib
by Martin Wille 01 Aug '07

01 Aug '07

Fanzhe Cui wrote: > Hi, Please, never start a new thread by replying to an unrelated message. You're likely not going to get a lot of answers, simply because your message is hidden in the "Upcoming review of Time Series" thread. > On the boost document page it has entry of the library: > C++/Tcl - C++/Tcl is a library that allows the easy integration of C++ and > Tcl. I you're talking about the wiki page that lists software that uses Boost. The software listed there is not supported by Boost.org. It's just software that happens to use Boost. So you're asking at the wrong place. > If I follow the link of the library, it will direct me to: > http://cpptcl.sourceforge.net/ > And I can download source code of the library. But one problem I found was > that there is a header file "tcl.h", included as header by the source code, Well, obviously a library that offers TCL/C++ integration needs C++ and TCL. You apparently don't have Tcl or just a runtime of Tcl. > and it was missing. So I suppose this C++/Tcl library requires TCL pkg from > third party, e.g. ActiveState. But the pkg from ActiveState is not free. I What makes you think Tcl was not free? Googling for Tcl brings you to www.tcl.tk. That page contains a link named "Get Tcl/Tk now". Following that link, you get to a page containing links to downloads of various versions of Tcl, including instructions how to use the sources on various operating systems, including Windows. Look at http://www.tcl.tk/doc/howto/compile.html At http://www.tcl.tk/software/tcltk/license.html you can see the License for Tcl, which looks like BSD license to me. That means you don't have to pay for Tcl. HTH, m

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Boost Property Tree Status
by Eric Hill 01 Aug '07

01 Aug '07

I found the post on May 23, 2006 by Thorsten Ottosen saying that the Property Tree Library has been accepted into Boost. But I don't see it on the main Boost libraries page, rather just the sandbox entry for the original review. Does anyone know where Property Tree wound up? Eric

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