(part 2)
...sorry, I should have said:
"f() will complete its evaluation before g() is runnable, it g() runs at
all."
"g() will become runnable before evaluation of f() is started"
"f() will evaluate completely and then g() will evaluate completely before
func() returns"
On Tue, Oct 10, 2017 at 4:44 PM, Michael Jones <michael.jo...@gmail.com>
wrote:
> First...
>
> go func() {
> f()
> go g()
> }()
>
> is tremendously different than:
>
> go func() {
> go g()
> f()
> }()
>
> and neither is equivalent to :
>
> go func() {
> f()
> g()
> } ()
>
> ...and on the order of evaluation and visibility and weak memory coherence
> guarantees and all manner of Go "non-promises" those are a reflection of
> underlying hardware reality, which does not look to get any more rich in
> various concurrency promises.
>
> On Tue, Oct 10, 2017 at 4:38 PM, Juliusz Chroboczek <j...@irif.fr> wrote:
>
>> > 1. "defer go" extend defers to work on goroutine exit with mechanism
>> just
>> > like defer, but if we say "defer go f()"
>> > instead of "defer f()" then we run on goroutine exit. Very big gains
>> for
>> > scaling here IMHO.
>>
>> If I read the language specification right, goroutines have no identity:
>> a goroutine is about doing something, and the something is not bound to
>> any particular context. For example, if you do
>>
>> go func() {
>> f()
>> go g()
>> }()
>>
>> this is completely equivalent to
>>
>> go func() {
>> f()
>> g()
>> } ()
>>
>> in the sense that there is no observable difference betwen the two, and
>> a Sufficiently Smart Compiler could in principle optimise the former
>> into the latter.
>>
>> Is that an important property to have? Frankly, I don't know.
>>
>> -- Juliusz
>>
>> --
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>
>
>
> --
> Michael T. Jones
> michael.jo...@gmail.com
>
--
Michael T. Jones
michael.jo...@gmail.com
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