digitalmars.D.learn - Tid is not a process id?
Hi
I'm working with std.concurrency. I can't seem to get messages to
reliably go to the right place.
------------
import core.thread;
import std.algorithm;
import std.concurrency;
import std.stdio;
int main(string[] args)
{
Tid[2] tids;
bool[Tid] response_flags;
for(auto i=0; i < 2; ++i)
{
tids[i] = spawn(&blah1, thisTid);
response_flags[tids[i]] = false;
}
auto receive_count = 0;
while(! reduce!"a && b"(response_flags))
{
receive(
(Tid some_blah_id, int done)
{
assert(done == 42);
++receive_count;
response_flags[some_blah_id] = true;
},
(Variant v)
{
writeln("Unexpected message: ", v, " type ",
v.type());
assert(false);
}
);
}
return 0;
}
void blah1(Tid parent)
{
auto subtid = spawn(&subsub, thisTid, parent);
send(subtid, thisTid, false);
receive((bool got){ assert(got);});
send(subtid, thisTid, 10);
receive((int got){ assert(got == 11);});
}
void subsub(Tid parent, Tid grandparent)
{
receive( (Tid parent, bool whatever){ assert(!whatever); });
send(parent, true);
receive( (Tid parent, int n){ assert(n == 10); });
send(parent, 11);
send(grandparent, parent, 42);
}
------------
Output shows that the 'main' function receives a bool message
type, with value true, but that should only go from subsub to
blah1?
Main response flags: [Tid(std.concurrency.MessageBox):false,
Tid(std.concurrency.MessageBox):false]
blah1 Parent tid: 29EFEF8
blah1 Parent tid: 2AEFEF8
Main tid: 413D54
blah1 Hello from this blah1 Tid: 413D54
blah1 Hello from this blah1 Tid: 413D54
subsub GrandParent tid: 2BEFEF4
subsub Parent tid: 2BEFF00
subsub GrandParent tid: 2CEFEF4
subsub Hello from subsub Tid: 413D54
subsub Parent tid: 2CEFF00
Unexpected message: true type bool
subsub Hello from subsub Tid: 413D54
core.exception.AssertError spawn2(40): Assertion failure
----------------
4205E8
420473
402209
408971
408C0F
40887F
4086F6
402123
40EA60
40EA9A
40E6BB
4270DD
----------------
std.concurrency.OwnerTerminated std\concurrency.d(248): Owner
terminated
----------------
4205E8
420473
40D2A4
40D31F
40D027
40CEA2
402327
40A0FE
41F065
428C7C
----------------
I'm guessing Tid can't be safely copied around or something.
Jul 24 2012
"Enerqi" <kelvin.d.ward googlemail.com>
Ah no, that example seems to work, confusion.
On Tuesday, 24 July 2012 at 13:48:07 UTC, Enerqi wrote:
Hi
I'm working with std.concurrency. I can't seem to get messages
to reliably go to the right place.
------------
import core.thread;
import std.algorithm;
import std.concurrency;
import std.stdio;
int main(string[] args)
{
Tid[2] tids;
bool[Tid] response_flags;
for(auto i=0; i < 2; ++i)
{
tids[i] = spawn(&blah1, thisTid);
response_flags[tids[i]] = false;
}
auto receive_count = 0;
while(! reduce!"a && b"(response_flags))
{
receive(
(Tid some_blah_id, int done)
{
assert(done == 42);
++receive_count;
response_flags[some_blah_id] = true;
},
(Variant v)
{
writeln("Unexpected message: ", v, " type
", v.type());
assert(false);
}
);
}
return 0;
}
void blah1(Tid parent)
{
auto subtid = spawn(&subsub, thisTid, parent);
send(subtid, thisTid, false);
receive((bool got){ assert(got);});
send(subtid, thisTid, 10);
receive((int got){ assert(got == 11);});
}
void subsub(Tid parent, Tid grandparent)
{
receive( (Tid parent, bool whatever){ assert(!whatever); });
send(parent, true);
receive( (Tid parent, int n){ assert(n == 10); });
send(parent, 11);
send(grandparent, parent, 42);
}
------------
Output shows that the 'main' function receives a bool message
type, with value true, but that should only go from subsub to
blah1?
Main response flags: [Tid(std.concurrency.MessageBox):false,
Tid(std.concurrency.MessageBox):false]
blah1 Parent tid: 29EFEF8
blah1 Parent tid: 2AEFEF8
Main tid: 413D54
blah1 Hello from this blah1 Tid: 413D54
blah1 Hello from this blah1 Tid: 413D54
subsub GrandParent tid: 2BEFEF4
subsub Parent tid: 2BEFF00
subsub GrandParent tid: 2CEFEF4
subsub Hello from subsub Tid: 413D54
subsub Parent tid: 2CEFF00
Unexpected message: true type bool
subsub Hello from subsub Tid: 413D54
core.exception.AssertError spawn2(40): Assertion failure
----------------
4205E8
420473
402209
408971
408C0F
40887F
4086F6
402123
40EA60
40EA9A
40E6BB
4270DD
----------------
std.concurrency.OwnerTerminated std\concurrency.d(248): Owner
terminated
----------------
4205E8
420473
40D2A4
40D31F
40D027
40CEA2
402327
40A0FE
41F065
428C7C
----------------
I'm guessing Tid can't be safely copied around or something.
Jul 24 2012
Not sure yet what your exactly issue is, but have you tried to reproduce it using register/lookup?
Jul 24 2012
On Wednesday, 25 July 2012 at 02:05:14 UTC, Chris NS wrote:Not sure yet what your exactly issue is, but have you tried to reproduce it using register/lookup?Bad post, that example was OK. The places where I was having errors was from exceptions being lost. Thanks.
Jul 26 2012