==============================================================
log:
==============================================================

[majestio@freebsd ~/Projects/webapp]$ dub
Performing "debug" build using /usr/local/bin/dmd for x86_64.
taggedalgebraic 0.10.11: target for configuration "library" is up to date.
eventcore 0.8.34: building configuration "kqueue"...
/home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(43,46): Error: function 'eventcore.drivers.posix.kqueue.KqueueEventLoop.this.__lambda1' is not nothrow
/home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(41,2): Error: nothrow constructor 'eventcore.drivers.posix.kqueue.KqueueEventLoop.this' may throw
/home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(60,20): Error: function 'core.sys.freebsd.sys.event.kevent' is not nothrow
/home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(48,16): Error: nothrow function 'eventcore.drivers.posix.kqueue.KqueueEventLoop.doProcessEvents' may throw
/usr/local/bin/dmd failed with exit code 1.

==============================================================
source kqueue.d:
==============================================================

/**
    BSD kqueue based event driver implementation.

    Kqueue is an efficient API for asynchronous I/O on BSD flavors, including
    OS X/macOS, suitable for large numbers of concurrently open sockets.
*/
module eventcore.drivers.posix.kqueue;
@safe: /*@nogc:*/ nothrow:

version (FreeBSD) enum have_kqueue = true;
else version (DragonFlyBSD) enum have_kqueue = true;
else version (OSX) enum have_kqueue = true;
else enum have_kqueue = false;

static if (have_kqueue):

public import eventcore.drivers.posix.driver;
import eventcore.internal.utils;

import core.time : Duration;
import core.sys.posix.sys.time : timespec, time_t;

version (OSX) import core.sys.darwin.sys.event;
else version (FreeBSD) import core.sys.freebsd.sys.event;
else version (DragonFlyBSD) import core.sys.dragonflybsd.sys.event;
else static assert(false, "Kqueue not supported on this OS.");


import core.sys.linux.epoll;


alias KqueueEventDriver = PosixEventDriver!KqueueEventLoop;

final class KqueueEventLoop : PosixEventLoop {
    private {
        int m_queue;
        kevent_t[] m_changes;
        kevent_t[] m_events;
    }

    this()
    @safe nothrow {
        m_queue = () @trusted { return kqueue(); } ();
        m_events.length = 100;
        assert(m_queue >= 0, "Failed to create kqueue.");
    }

    override bool doProcessEvents(Duration timeout)
    @trusted {
        import std.algorithm : min;
        //assert(Fiber.getThis() is null, "processEvents may not be called from within a fiber!");

        //print("wait %s", m_events.length);
        timespec ts;
        long secs, hnsecs;
        timeout.split!("seconds", "hnsecs")(secs, hnsecs);
        ts.tv_sec = cast(time_t)secs;
        ts.tv_nsec = cast(uint)hnsecs * 100;

        auto ret = kevent(m_queue, m_changes.ptr, cast(int)m_changes.length, m_events.ptr, cast(int)m_events.length, timeout == Duration.max ? null : &ts);
        m_changes.length = 0;
        m_changes.assumeSafeAppend();

        //print("kevent returned %s", ret);

        if (ret > 0) {
            foreach (ref evt; m_events[0 .. ret]) {
                //print("event %s %s", evt.ident, evt.filter, evt.flags);
                assert(evt.ident <= uint.max);
                auto fd = cast(FD)cast(int)evt.ident;
                if (evt.flags & (EV_EOF|EV_ERROR))
                    notify!(EventType.status)(fd);
                switch (evt.filter) {
                    default: break;
                    case EVFILT_READ: notify!(EventType.read)(fd); break;
                    case EVFILT_WRITE: notify!(EventType.write)(fd); break;
                }
                // EV_SIGNAL, EV_TIMEOUT
            }
            return true;
        } else return false;
    }

    override void dispose()
    {

        import core.sys.posix.unistd : close;
        close(m_queue);
    }

    override void registerFD(FD fd, EventMask mask, bool edge_triggered = true)
    {
        //print("register %s %s", fd, mask);
        kevent_t ev;
        ev.ident = fd;
        ev.flags = EV_ADD|EV_ENABLE;
        if (edge_triggered) ev.flags |= EV_CLEAR;
        if (mask & EventMask.read) {
            ev.filter = EVFILT_READ;
            m_changes ~= ev;
        }
        if (mask & EventMask.write) {
            ev.filter = EVFILT_WRITE;
            m_changes ~= ev;
        }
        //if (mask & EventMask.status) ev.events |= EPOLLERR|EPOLLRDHUP;
    }

    override void unregisterFD(FD fd, EventMask mask)
    {
        kevent_t ev;
        ev.ident = fd;
        ev.flags = EV_DELETE;
        m_changes ~= ev;
    }

    override void updateFD(FD fd, EventMask old_mask, EventMask new_mask, bool edge_triggered = true)
    {
        //print("update %s %s", fd, mask);
        kevent_t ev;
        auto changes = old_mask ^ new_mask;

        if (changes & EventMask.read) {
            ev.filter = EVFILT_READ;
            ev.flags = new_mask & EventMask.read ? EV_ADD : EV_DELETE;
            if (edge_triggered) ev.flags |= EV_CLEAR;
            m_changes ~= ev;
        }

        if (changes & EventMask.write) {
            ev.filter = EVFILT_WRITE;
            ev.flags = new_mask & EventMask.write ? EV_ADD : EV_DELETE;
            if (edge_triggered) ev.flags |= EV_CLEAR;
            m_changes ~= ev;
        }

        //if (mask & EventMask.status) ev.events |= EPOLLERR|EPOLLRDHUP;
    }
}

On Friday, 18 May 2018 at 05:44:12 UTC, Majestio wrote:
> ==============================================================
> log:
> ==============================================================
>
> [majestio@freebsd ~/Projects/webapp]$ dub
> Performing "debug" build using /usr/local/bin/dmd for x86_64.
> taggedalgebraic 0.10.11: target for configuration "library" is up to date.
> eventcore 0.8.34: building configuration "kqueue"...
> /home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(43,46): Error: function 'eventcore.drivers.posix.kqueue.KqueueEventLoop.this.__lambda1' is not nothrow
> /home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(41,2): Error: nothrow constructor 'eventcore.drivers.posix.kqueue.KqueueEventLoop.this' may throw
> /home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(60,20): Error: function 'core.sys.freebsd.sys.event.kevent' is not nothrow
> /home/majestio/.dub/packages/eventcore-0.8.34/eventcore/source/eventcore/drivers/posix/kqueue.d(48,16): Error: nothrow function 'eventcore.drivers.posix.kqueue.KqueueEventLoop.doProcessEvents' may throw
> /usr/local/bin/dmd failed with exit code 1.

I'm not sure, but I recently fixed an issue very much related to this:  https://github.com/dlang/dmd/pull/8184

I'm curious if you could download one of the nightly compilers and test if it is still problem:  http://nightlies.dlang.org/dmd-master-2018-05-18/

Mike

On Friday, 18 May 2018 at 05:44:12 UTC, Majestio wrote:

>     this()
>     @safe nothrow {
>         m_queue = () @trusted { return kqueue(); } ();
>         m_events.length = 100;
>         assert(m_queue >= 0, "Failed to create kqueue.");
>     }
>


Also, I believe this is __lambda1:

m_queue = () @trusted { return kqueue(); } ();

Is `kqueue()` nothrow?  You probably need to decorate that lambda with `nothrow`.  (i.e. put a `nothrow` right after `@trusted`.

Mike

On Friday, 18 May 2018 at 07:28:39 UTC, Mike Franklin wrote:
> On Friday, 18 May 2018 at 05:44:12 UTC, Majestio wrote:
>
>>     this()
>>     @safe nothrow {
>>         m_queue = () @trusted { return kqueue(); } ();
>>         m_events.length = 100;
>>         assert(m_queue >= 0, "Failed to create kqueue.");
>>     }
>>
>
>
> Also, I believe this is __lambda1:
>
> m_queue = () @trusted { return kqueue(); } ();
>
> Is `kqueue()` nothrow?  You probably need to decorate that lambda with `nothrow`.  (i.e. put a `nothrow` right after `@trusted`.
>
> Mike

`kqueue()` is not nothrow. From log: "Error: function 'core.sys.freebsd.sys.event.kqueue' is not nothrow"

This decoration does not solve the problem :(

On Friday, 18 May 2018 at 06:02:46 UTC, Mike Franklin wrote:
> On Friday, 18 May 2018 at 05:44:12 UTC, Majestio wrote:
> I'm curious if you could download one of the nightly compilers and test if it is still problem:  http://nightlies.dlang.org/dmd-master-2018-05-18/
>
> Mike

About dmd-master-2018-05-18 ...

build.sh:
=============================================
#/bin/sh

export PATH=/home/majestio/Projects/dmd2/freebsd/bin64:$PATH
export LD_LIBRARY_PATH=/home/majestio/Projects/dmd2/freebsd/lib64:$LD_LIBRARY_PATH

rm -fR ~/.dub
fetch http://nightlies.dlang.org/dmd-master-2018-05-18/dmd.master.freebsd-64.tar.xz
tar xf dmd.master.freebsd-64.tar.xz
rm -f dmd.master.freebsd-64.tar.xz
echo -ne '\n\n\n\n\n\n\n' | dub init hello --type=vibe.d
cd hello
dub 2>&1 | tee logfile.log


logfile.log:
=============================================
Fetching libevent 2.0.2+2.0.16 (getting selected version)...
Fetching diet-ng 1.4.5 (getting selected version)...
Fetching taggedalgebraic 0.10.11 (getting selected version)...
Fetching openssl 1.1.6+1.0.1g (getting selected version)...
Fetching botan 1.12.9 (getting selected version)...
Fetching stdx-allocator 2.77.1 (getting selected version)...
Fetching vibe-d 0.8.3 (getting selected version)...
Fetching memutils 0.4.10 (getting selected version)...
Fetching vibe-core 1.4.0 (getting selected version)...
Fetching libasync 0.8.3 (getting selected version)...
Fetching botan-math 1.0.3 (getting selected version)...
Fetching eventcore 0.8.34 (getting selected version)...
Performing "debug" build using /usr/home/majestio/Projects/dmd2/freebsd/bin64/dmd for x86_64.
taggedalgebraic 0.10.11: building configuration "library"...
eventcore 0.8.34: building configuration "kqueue"...
stdx-allocator 2.77.1: building configuration "library"...
vibe-core 1.4.0: building configuration "kqueue"...
vibe-d:utils 0.8.3: building configuration "library"...
vibe-d:data 0.8.3: building configuration "library"...
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2513,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/data/vibe/data/json.d(2518,25): Deprecation: function `std.exception.enforceEx!(JSONException).enforceEx!bool.enforceEx` is deprecated - Use `enforce`. `enforceEx` will be removed with 2.089.
vibe-d:crypto 0.8.3: building configuration "library"...
diet-ng 1.4.5: building configuration "library"...
vibe-d:stream 0.8.3: building configuration "library"...
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/stream/vibe/stream/wrapper.d(179,22): Error: no property `connected` for type `const(InterfaceProxy!(ConnectionStream))`
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/stream/vibe/stream/wrapper.d(187,19): Error: no property `connected` for type `InterfaceProxy!(ConnectionStream)`
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/stream/vibe/stream/wrapper.d(188,15): Error: no property `close` for type `InterfaceProxy!(ConnectionStream)`
/home/majestio/.dub/packages/vibe-d-0.8.3/vibe-d/stream/vibe/stream/wrapper.d(198,22): Error: no property `waitForData` for type `InterfaceProxy!(ConnectionStream)`
/usr/home/majestio/Projects/dmd2/freebsd/bin64/dmd failed with exit code 1.

On Friday, 18 May 2018 at 09:35:28 UTC, Majestio wrote:

>>
>> Also, I believe this is __lambda1:
>>
>> m_queue = () @trusted { return kqueue(); } ();
>>
>> Is `kqueue()` nothrow?  You probably need to decorate that lambda with `nothrow`.  (i.e. put a `nothrow` right after `@trusted`.
>>
>> Mike
>
> `kqueue()` is not nothrow. From log: "Error: function 'core.sys.freebsd.sys.event.kqueue' is not nothrow"
>
> This decoration does not solve the problem :(

But you're calling it from a `nothrow` function through a lambda that is also not `nothrow`.  Decorate your lambda as `nothrow` and then, if you can't make `kqueue()` `nothrow`, put it in a try-catch and figure out what to do if it does throw.

m_queue = () @trusted nothrow
{
    try
    {
        return kqueue();
    }
    catch(Exception ex)
    {
        // what do you want to do about it?
    }
} ();

Mike

On Friday, 18 May 2018 at 09:59:27 UTC, Majestio wrote:
> On Friday, 18 May 2018 at 06:02:46 UTC, Mike Franklin wrote:
>> [...]
>
> About dmd-master-2018-05-18 ...
>
> build.sh:
> =============================================
> #/bin/sh
>
> [...]

FWIW instead of such a build script, you could have used the install script which does this for you:

curl https://dlang.org/install.sh | bash -s dmd-nightly

Full docs: https://dlang.org/install

On Friday, 18 May 2018 at 10:18:42 UTC, Seb wrote:
> On Friday, 18 May 2018 at 09:59:27 UTC, Majestio wrote:
>> On Friday, 18 May 2018 at 06:02:46 UTC, Mike Franklin wrote:
>>> [...]
>>
>> About dmd-master-2018-05-18 ...
>>
>> build.sh:
>> =============================================
>> #/bin/sh
>>
>> [...]
>
> FWIW instead of such a build script, you could have used the install script which does this for you:
>
> curl https://dlang.org/install.sh | bash -s dmd-nightly
>
> Full docs: https://dlang.org/install

Thanks I'll know.