Threads: fixed request hang with aio_write and subrequests. If the subrequest is already finalized, the handler set with aio_write may still be used by sendfile in threads when using range requests (see also e4c1f5b32868, and the original note in 9fd738b85fad). Calling already finalized subrequest's r->write_event_handler in practice results in request hang in some cases. Fix is to trigger connection event handler if the subrequest was already finalized.

# Copyright (C) Nginx, Inc.


if [ $USE_THREADS = YES ]; then

    if [ "$NGX_PLATFORM" = win32 ]; then
        cat << END

$0: --with-threads is not supported on Windows

END
        exit 1
    fi

    have=NGX_THREADS . auto/have
    CORE_DEPS="$CORE_DEPS $THREAD_POOL_DEPS"
    CORE_SRCS="$CORE_SRCS $THREAD_POOL_SRCS"
    CORE_LIBS="$CORE_LIBS -lpthread"
fi