Re: Invoke garbage collector?
On 02/09/2011 10:15 PM, Steven Schveighoffer wrote: On Wed, 09 Feb 2011 15:58:13 -0500, bearophile bearophileh...@lycos.com wrote: Sean Eskapp: so is there a way to invoke a GC cleanup in some way? http://www.digitalmars.com/d/2.0/phobos/core_memory.html#minimize This attempts to minimize memory, it does not run a collection cycle (I don't think anyways). To invoke the GC collector, use: http://www.digitalmars.com/d/2.0/phobos/core_memory.html#collect -Steve But won't this blindly run a GC cycle? What if all I want is a given thingy's mem to be released, isn't it overkill to call GC.collect? Denis -- _ vita es estrany spir.wikidot.com
Re: Invoke garbage collector?
On Thu, 10 Feb 2011 07:34:53 -0500, spir denis.s...@gmail.com wrote: On 02/09/2011 10:15 PM, Steven Schveighoffer wrote: On Wed, 09 Feb 2011 15:58:13 -0500, bearophile bearophileh...@lycos.com wrote: Sean Eskapp: so is there a way to invoke a GC cleanup in some way? http://www.digitalmars.com/d/2.0/phobos/core_memory.html#minimize This attempts to minimize memory, it does not run a collection cycle (I don't think anyways). To invoke the GC collector, use: http://www.digitalmars.com/d/2.0/phobos/core_memory.html#collect -Steve But won't this blindly run a GC cycle? What if all I want is a given thingy's mem to be released, isn't it overkill to call GC.collect? Then you can free it via: http://www.digitalmars.com/d/2.0/phobos/core_memory.html#free The OP's question was how do I run the garbage collector. -Steve
Re: Invoke garbage collector?
Sean Eskapp wrote:
I'm having an unfortunate DSFML issue, where failing to free objects
like Images or Sprites causes exceptions to eventually be thrown.
Calling the built-in member dispose() causes access violations, so I
assume it's not for programmer use.
However, I need the resources to be freed more quickly than the GC is
apparently doing (I assume the Images and Sprites are eventually
cleaned up), so is there a way to invoke a GC cleanup in some way?
I don't think that invoking the garbage collector is a good solution in
this case. dispose is indeed defined as protected, so you probably
should not call it manually, but then there really should be a public
dispose like function. The reason for the crashes when calling
dispose manually is simple: dispose calls a c sfml function to release c
resources. The destructor calls dispose again, dispose tries to free an
invalid pointer - crash. So what should probably be done is to define a
private m_disposed member and only call dispose if it hasn't been called
before. Try to add this code to the DSFMLObject class in
dsfml/system/common.d:
-
private:
bool m_disposed = false;
public:
final void releaseRessources() //Needs a better name, though
{
if(m_disposed)
return;
dispose();
m_disposed = true;
}
-
And change dispose() in the DSFmLObject ~this() to releaseRessources();
(Crashes might still occur if dispose is called directly. In the end,
this might need a little more thinking, but that's up to the DSFML
authors ;-))
--
Johannes Pfau
signature.asc
Description: PGP signature
Re: Invoke garbage collector?
Johannes Pfau wrote:
Sean Eskapp wrote:
I'm having an unfortunate DSFML issue, where failing to free objects
like Images or Sprites causes exceptions to eventually be thrown.
Calling the built-in member dispose() causes access violations, so I
assume it's not for programmer use.
However, I need the resources to be freed more quickly than the GC is
apparently doing (I assume the Images and Sprites are eventually
cleaned up), so is there a way to invoke a GC cleanup in some way?
I don't think that invoking the garbage collector is a good solution in
this case. dispose is indeed defined as protected, so you probably
should not call it manually, but then there really should be a public
dispose like function. The reason for the crashes when calling
dispose manually is simple: dispose calls a c sfml function to release
c resources. The destructor calls dispose again, dispose tries to free
an invalid pointer - crash. So what should probably be done is to
define a private m_disposed member and only call dispose if it hasn't
been called before. Try to add this code to the DSFMLObject class in
dsfml/system/common.d:
-
private:
bool m_disposed = false;
public:
final void releaseRessources() //Needs a better name, though
{
if(m_disposed || m_preventDelete)
return;
dispose();
m_disposed = true;
}
-
And change dispose() in the DSFmLObject ~this() to releaseRessources();
(Crashes might still occur if dispose is called directly. In the end,
this might need a little more thinking, but that's up to the DSFML
authors ;-))
The releaseRessources function should also check for m_preventDelete.
Updated in the quote above.
--
Johannes Pfau
signature.asc
Description: PGP signature
Invoke garbage collector?
I'm having an unfortunate DSFML issue, where failing to free objects like Images or Sprites causes exceptions to eventually be thrown. Calling the built-in member dispose() causes access violations, so I assume it's not for programmer use. However, I need the resources to be freed more quickly than the GC is apparently doing (I assume the Images and Sprites are eventually cleaned up), so is there a way to invoke a GC cleanup in some way?
Re: Invoke garbage collector?
Sean Eskapp: so is there a way to invoke a GC cleanup in some way? http://www.digitalmars.com/d/2.0/phobos/core_memory.html#minimize Bye, bearophile
Re: Invoke garbage collector?
On Wed, 09 Feb 2011 15:58:13 -0500, bearophile bearophileh...@lycos.com wrote: Sean Eskapp: so is there a way to invoke a GC cleanup in some way? http://www.digitalmars.com/d/2.0/phobos/core_memory.html#minimize This attempts to minimize memory, it does not run a collection cycle (I don't think anyways). To invoke the GC collector, use: http://www.digitalmars.com/d/2.0/phobos/core_memory.html#collect -Steve
Re: Invoke garbage collector?
However, I need the resources to be freed more quickly than the GC is apparently doing You could use scoped instances if you need to clean them up soon after creation.
Re: Invoke garbage collector? (Scoped Instances)
== Quote from Trass3r (u...@known.com)'s article However, I need the resources to be freed more quickly than the GC is apparently doing You could use scoped instances if you need to clean them up soon after creation. To my knowledge, these are being removed from the language, and so, could only be used in the short-term.
Re: Invoke garbage collector? (Scoped Instances)
On Wednesday 09 February 2011 17:52:47 Sean Eskapp wrote: == Quote from Trass3r (u...@known.com)'s article However, I need the resources to be freed more quickly than the GC is apparently doing You could use scoped instances if you need to clean them up soon after creation. To my knowledge, these are being removed from the language, and so, could only be used in the short-term. Yes. They're inherently unsafe because of the risk of escaped references. std.typecons.scoped is intended as an alternative however, if you really want it. Personally, I'd generally advise against it unless profiling shows that you need it. - Jonathan M Davis
