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69 lines
1.6 KiB
69 lines
1.6 KiB
#include <unistd.h> |
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#include <fcntl.h> |
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#include <errno.h> |
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#include "io_internal.h" |
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#ifdef HAVE_KQUEUE |
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#include <sys/types.h> |
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#include <sys/event.h> |
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#include <sys/time.h> |
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#endif |
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#ifdef HAVE_EPOLL |
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#include <inttypes.h> |
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#include <sys/epoll.h> |
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#include <byte.h> |
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#endif |
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#ifdef HAVE_DEVPOLL |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/devpoll.h> |
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#endif |
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#ifdef DEBUG |
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#include <assert.h> |
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#else |
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#define assert(x) |
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#endif |
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/* IDEA: if someone calls io_dontwantwrite, do not do the syscall to |
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* tell the kernel about it. Only when a write event comes in and the |
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* user has told us he does not want them, THEN tell the kernel we are |
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* not interested. In the typical protocol case of "write request, read |
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* reply", this should save a lot of syscalls. */ |
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void io_dontwantwrite_really(int64 d,io_entry* e) { |
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int newfd; |
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(void)d; |
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assert(e->kernelwantwrite); |
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newfd=!e->kernelwantread; |
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io_wanted_fds-=newfd; |
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#ifdef HAVE_KQUEUE |
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if (io_waitmode==KQUEUE) { |
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struct kevent kev; |
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struct timespec ts; |
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EV_SET(&kev, d, EVFILT_WRITE, EV_DELETE, 0, 0, 0); |
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ts.tv_sec=0; ts.tv_nsec=0; |
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kevent(io_master,&kev,1,0,0,&ts); |
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} |
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#endif |
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#ifdef HAVE_DEVPOLL |
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if (io_waitmode==DEVPOLL) { |
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struct pollfd x; |
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x.fd=d; |
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x.events=0; |
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if (e->kernelwantread) x.events|=POLLIN; |
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if (!x.events) x.events=POLLREMOVE; |
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write(io_master,&x,sizeof(x)); |
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} |
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#endif |
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e->wantwrite=0; |
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e->kernelwantwrite=0; |
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} |
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void io_dontwantwrite(int64 d) { |
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io_entry* e=iarray_get(&io_fds,d); |
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if (e) { |
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if (e->canwrite) |
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io_dontwantwrite_really(d,e); |
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e->wantwrite=0; |
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} |
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}
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