Re: Can't send messages to tid spawned in a Windows DLL. Bug?

2017-02-16 Thread Atila Neves via Digitalmars-d-learn

On Thursday, 16 February 2017 at 15:14:25 UTC, kinke wrote:
On Thursday, 16 February 2017 at 12:07:40 UTC, Atila Neves 
wrote:

This fails for me in a DLL:

auto tid = spawn();
assert(tid != Tid.init);

If I print out the tid, I find that its message box is null. 
This is odd, since according the code in std.concurrency 
there's nothing weird about how it gets a message box, it's 
just `auto spawnTid = Tid(new MessageBox);`. So... `new` is 
returning null???


The really weird thing is that a thread is spawned and func 
starts executing. I just can't send it any messages without 
crashing.


Atila


If you suspect `new` of returning null, a GC issue seems 
likely. Is your DLL linked statically against druntime, thus 
having its own GC? Or are you using a shared druntime (and thus 
GC) across multiple binaries?


Whatever's default on Windows 32-bit. The thing is, all other 
uses of GC allocations in the same DLL work as expected.


Atila


Re: Can't send messages to tid spawned in a Windows DLL. Bug?

2017-02-16 Thread kinke via Digitalmars-d-learn

On Thursday, 16 February 2017 at 12:07:40 UTC, Atila Neves wrote:

This fails for me in a DLL:

auto tid = spawn();
assert(tid != Tid.init);

If I print out the tid, I find that its message box is null. 
This is odd, since according the code in std.concurrency 
there's nothing weird about how it gets a message box, it's 
just `auto spawnTid = Tid(new MessageBox);`. So... `new` is 
returning null???


The really weird thing is that a thread is spawned and func 
starts executing. I just can't send it any messages without 
crashing.


Atila


If you suspect `new` of returning null, a GC issue seems likely. 
Is your DLL linked statically against druntime, thus having its 
own GC? Or are you using a shared druntime (and thus GC) across 
multiple binaries?


Can't send messages to tid spawned in a Windows DLL. Bug?

2017-02-16 Thread Atila Neves via Digitalmars-d-learn

This fails for me in a DLL:

auto tid = spawn();
assert(tid != Tid.init);

If I print out the tid, I find that its message box is null. This 
is odd, since according the code in std.concurrency there's 
nothing weird about how it gets a message box, it's just `auto 
spawnTid = Tid(new MessageBox);`. So... `new` is returning null???


The really weird thing is that a thread is spawned and func 
starts executing. I just can't send it any messages without 
crashing.


Atila