boost

问题 Given the following class class task_counter { public: task_counter(short, boost::asio::io_service&); ~task_counter(void); template<typename CompletionHandler> void exec_task(CompletionHandler handler) { grant_access(); io_.post(boost::bind(&task_counter::exec_and_decrease_counter<CompletionHandler>, this, handler)); } template<typename CompletionHandler> void exec_and_decrease_counter(CompletionHandler handler) { handler(); decrease_counter(); } private: .... } Method exec_task is called by

问题 I'm facing difficulty to build qpid cpp solution on windows xp I have installed Boost 1.55.0, Python 2.7, Ruby 2.0.0 and CMake 2.8 Then I have added Environment variable paths for Python, Ruby and CMake, and then Boost variables are set as followed BOOST_ROOT C:\Boost BOOST_LIBRARYDIR C:\Boost\lib BOOST_INCLUDEDIR C:\Boost\include I build Boost with following commands from command prompt bootstrap .\b2 I have downloaded qpid-cpp-0.26, Then I build qpid with following command from command

问题 I am using a boost::asio::deadline_timer like so to set some timeout before an async_read operation on a tcp socket . I am using boost 1.61 . long time_out_millis = 2000; boost::asio::deadline_timer theTimer(theSocket.get_io_service(), boost::posix_time::milliseconds(time_out_millis)); Problem: Other parts of my code use std::chrono::milliseconds . I want use std::chrono instead of the "long time_out_millis" & if possible use std::chrono::milliseconds instead of boost::posix_time:

问题 I'm getting some errors when trying to use -> in an iterator type. When I dig in the library defining the iterator, it seems to me that everyhing is allright and that there is no reason for the error. Here is the code, part of boost::multi_array: template <class T> struct operator_arrow_proxy { operator_arrow_proxy(T const& px) : value_(px) {} T* operator->() const { return &value_; } // This function is needed for MWCW and BCC, which won't call operator-> // again automatically per 13.3.1.2

问题 I am designing an asynchronous logger class as follows. However, not sure if I am using the boost condition variable in the right way. Can anyone comment on this? Here the processLogEntry method is a thread function and I am using boost here. void LogWriter::stopThread() { mStop = true; mCond.notify_one(); mThread->join(); } void LogWriter::processLogEntry() { while(!mStop) { boost::mutex::scoped_lock lock(mMutex); mCond.wait(lock); while(!q.empty()) { // process begins } } } void LogWriter:

问题 Here's the issue: the code I'm using uses a big library which links against boost. When I compile with static linking, everything works fine. However, when I try dynamic linking I get a bunch of undefined reference errors. The first thought was obviously "I am not linking the boost program_options" library, but I looked, and it is there in the linking command (and it comes after the library that needs it). Among the different errors, though, this stood out: undefined reference to `

问题 I recently implemented stack trace logging using boost's new stacktrace library: int debugErrorCallback(int status, const char* func_name, const char* err_msg, const char* file_name, int line, void* userdata) { boost::stacktrace::stacktrace stacktrace(4, 10); //skipped 4 frames include cv::error, this function and 2 in boost::stacktrace ctor std::cout << boost::stacktrace::detail::to_string(stacktrace.as_vector().data(), stacktrace.size()) << std::endl; } Having tested it on my development

问题 So... I have a base path and a new path.New path contains in it base path. I need to see what is different in new path. Like we had /home/ and new path is /home/apple/one and I need to get from it apple/one. note - when I would create some path from (homePath/diffPath) I need to get that /home/apple/one again. How to do such thing with Boost FileSystem? 回答1: Using stem() and parent_path() and walk backwards from the new path until we get back to base path, this works, but I am not sure if it

问题 So... I have a base path and a new path.New path contains in it base path. I need to see what is different in new path. Like we had /home/ and new path is /home/apple/one and I need to get from it apple/one. note - when I would create some path from (homePath/diffPath) I need to get that /home/apple/one again. How to do such thing with Boost FileSystem? 回答1: Using stem() and parent_path() and walk backwards from the new path until we get back to base path, this works, but I am not sure if it

问题 So... I have a base path and a new path.New path contains in it base path. I need to see what is different in new path. Like we had /home/ and new path is /home/apple/one and I need to get from it apple/one. note - when I would create some path from (homePath/diffPath) I need to get that /home/apple/one again. How to do such thing with Boost FileSystem? 回答1: Using stem() and parent_path() and walk backwards from the new path until we get back to base path, this works, but I am not sure if it