What's pthread in Boost?
I found there are also a pthread in Boost library, is it the same thing as the posix pthread? ...
boost-thread
Trouble linking libboost libraries to compile sslsniff on RHEL
Trying to build sslsniff on a RHEL 5.2 system here. When compiling sslsniff on RHEL I hit the same errors when using libboost packages (from repositories like rpmforge) and compiling libboost from source (which appeared to be successful.) I tried this on a fresh system as well (no previous/failed/garbage installs of libboost etc.) # mak...
Why boost::recursive_mutex is not working as expected?
I have a custom class that uses boost mutexes and locks like this (only relevant parts): template<class T> class FFTBuf { public: FFTBuf(); [...] void lock(); void unlock(); private: T *_dst; int _siglen; int _processed_sums; int _expected_sums; int _assign...
Boost Thread Specific Storage Question (boost/thread/tss.hpp)
The boost threading library has an abstraction for thread specific (local) storage. I have skimmed over the source code and it seems that the TSS functionality can be used in an application with any existing thread regardless of weather it was created from boost::thread --i.e., this implies that certain callbacks are registered with the ...
How does a portable Thread Specific Storage Mechanism's Naming Scheme Generate Thread Relative Unique Identifiers ?
A portable thread specific storage reference/identity mechanism, of which boost/thread/tss.hpp is an instance, needs a way to generate a unique keys for itself. This key is unique in the scope of a thread, and is subsequently used to retrieve the object it references. This mechanism is used in code written in a thread neutral manner. Si...
killing a separate thread having a socket
Hi All I have a separate thread ListenerThread having a socket listening to info broadcasted by some remote server. This is created at the constructor of one class I need to develop. Because of requirements, once the separate thread is started I need to avoid any blocking function on the main thread. Once it comes to the point of calli...
Parallel version of loop not faster than serial version
I'm writing a program in C++ to perform a simulation of particular system. For each timestep, the biggest part of the execution is taking up by a single loop. Fortunately this is embarassingly parallel, so I decided to use Boost Threads to parallelize it (I'm running on a 2 core machine). I would expect at speedup close to 2 times the...
debug boost::thread with gdb, code::blocks
I am running in a little bit of a trouble with boost threads ... I am using gdb with code::blocks and everytime I set a breakpoint in the thread code it breaks in the boost thread.hpp file, more exactly in this function (that probably launches the thread) namespace boost namespace detail class thread_data: void r...
Modelling boost::Lockable with semaphore rather than mutex (previously titled: Unlocking a mutex from a different thread)
I'm using the C++ boost::thread library, which in my case means I'm using pthreads. Officially, a mutex must be unlocked from the same thread which locks it, and I want the effect of being able to lock in one thread and then unlock in another. There are many ways to accomplish this. One possibility would be to write a new mutex class ...
Using boost locks for RAII access to a semaphore
Suppose I write a C++ semaphore class with an interface that models the boost Lockable concept (i.e. lock(); unlock(); try_lock(); etc.). Is it safe/recommended to use boost locks for RAII access to such an object? In other words, do boost locks (and/or other related parts of the boost thread library) assume that the Lockable concept w...
How to use boost::bind with non-copyable params, for example boost::promise ?
Some C++ objects have no copy constructor, but have move constructor. For example, boost::promise. How can I bind those objects using their move constructors ? #include <boost/thread.hpp> void fullfil_1(boost::promise<int>& prom, int x) { prom.set_value(x); } boost::function<void()> get_functor() { // boost::promise is not copyab...
Error while excuting a simple boost thread program
Hi All, Could you tell mw what is the problem with the below boost::thread program #include<iostream> #include<boost/thread/thread.hpp> boost::mutex mutex; class A { public: A() : a(0) {} void operator()() { boost::mutex::scoped_lock lock(mutex); } private: int a; }; int main() { boost::thread thr1(A()); boos...
Boost.Thread throws bad_alloc exception in VS2010
Upon including <boost/thread.hpp> I get this exception: First-chance exception at 0x7c812afb in CSF.exe: Microsoft C++ exception: boost::exception_detail::clone_impl<boost::exception_detail::bad_alloc_> at memory location 0x0012fc3c.. First-chance exception at 0x7c812afb in CSF.exe: Microsoft C++ exception: [rethrow] at memory locati...
how a thread can signal when it's finished?
#include <iostream> #include <boost/thread.hpp> using std::endl; using std::cout; using namespace boost; mutex running_mutex; struct dostuff { volatile bool running; dostuff() : running(true) {} void operator()(int x) { cout << "dostuff beginning " << x << endl; this_thread::sleep(posix_time::seconds(2)...
Signals and threads - good or bad design decision?
I have to write a program that performs highly computationally intensive calculations. The program might run for several days. The calculation can be separated easily in different threads without the need of shared data. I want a GUI or a web service that informs me of the current status. My current design uses BOOST::signals2 and BOOST...
Boost.Thread Linking - boost_thread vs. boost_thread-mt
It's not clear to me what linking options exist for the Boost.Thread 1.34.1 library. I'm on Ubuntu 8.04 and I've found that when using either boost_thread or boost_thread-mt during linking both compile and run, but I don't see any documentation on these or any other linking options in above link. What Boost.Thread linking options are a...
boost::threads - how to do graceful shutdown?
I'm trying to improve the portability of a C++ app by using boost:threads instead of our own wrapper over Win32 threads, and the issue of graceful thread termination (again) rears its ugly head. On pure win32, I 'interrupt' threads by using QueueUserAPC to throw a "thread_interrupt" exception which causes all RAII objects to cleanup on ...
Problems regarding Boost::Python and Boost::Threads.
Me and a friend are developing an application which uses Boost::Python. I have defined an interface in C++ (well a pure virtual class), exposed through Boost::Python to the users, who have to inherit from it and create a class, which the application takes and uses for some callback mechanism. Everything that far goes pretty well. Now, t...
Synchronizing access to a return value
Consider the following C++ member function: size_t size() const { boost::lock_guard<boost::mutex> lock(m_mutex); return m_size; } The intent here is not to synchronize access to the private member variable m_size, but just to make sure that the caller receives a valid value for m_size. The goal is to prevent the function f...
How to implement an Exchanger (Rendezvous Pattern) in C++?
In Java, there is an Exchanger class (http://java.sun.com/j2se/1.5.0/docs/api/java/util/concurrent/Exchanger.html). How to implement something like that in C++ (using boost) ...