pfc::fdSelect

#include <nix-objects.h>

Public Member Functions
int	Select ()
int	Select (double timeOutSeconds)
int	Select_ (int timeOutMS)

Data Fields
fdSet	Errors
fdSet	Reads
fdSet	Writes

Detailed Description

Definition at line 59 of file nix-objects.h.

Member Function Documentation

int pfc::fdSelect::Select

(

)

Definition at line 94 of file nix-objects.cpp.

                         {
        return Select_( -1 );
    }

int pfc::fdSelect::Select

(

double

timeOutSeconds

)

Definition at line 97 of file nix-objects.cpp.

                                                {
        int ms;
        if (timeOutSeconds < 0) {
            ms = -1;
        } else if (timeOutSeconds == 0) {
            ms = 0;
        } else {
            ms = pfc::rint32( timeOutSeconds * 1000 );
            if (ms < 1) ms = 1;
        }
        return Select_( ms );
    }

int pfc::fdSelect::Select_

(

int

timeOutMS

)

Definition at line 110 of file nix-objects.cpp.

                                         {
        fdSet total = Reads;
        total += Writes;
        total += Errors;
        const size_t count = total.m_fds.size();
        pfc::array_t< pollfd > v;
        v.set_size_discard( count );
        size_t walk = 0;
        for( auto i = total.m_fds.begin(); i != total.m_fds.end(); ++ i ) {
            const int fd = *i;
            auto & f = v[walk++];
            f.fd = fd;
            f.events = (Reads[fd] ? POLLIN : 0) | (Writes[fd] ? POLLOUT : 0);
            f.revents = 0;
        }
        int status = poll(v.get_ptr(), (int)count, timeOutMS);
        if (status < 0) throw exception_nix();
        
        Reads.clear(); Writes.clear(); Errors.clear();
        
        if (status > 0) {
            for(walk = 0; walk < count; ++walk) {
                auto & f = v[walk];
                if (f.revents & POLLIN) Reads += f.fd;
                if (f.events & POLLOUT) Writes += f.fd;
                if (f.events & POLLERR) Errors += f.fd;
            }
        }
        
        return status;
    }

Field Documentation

fdSet pfc::fdSelect::Errors

Definition at line 66 of file nix-objects.h.

fdSet pfc::fdSelect::Reads

Definition at line 66 of file nix-objects.h.

fdSet pfc::fdSelect::Writes

Definition at line 66 of file nix-objects.h.

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The documentation for this class was generated from the following files:

• pfc/nix-objects.h
• pfc/nix-objects.cpp