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Dependencies Analyzer
by phil＠highoctane.be Nov. 25, 2014

Nov. 25, 2014

I installed it in my 3.0 but it crashes with a DNU on TreeNodeModel>>position: I loaded it like this: Gofer it smalltalkhubUser: 'BaptisteQuide' project: 'PackageDependenciesAnalysis'; configuration; loadStable The article on http://www.baptistequide.fr/packagedependencies.php says that it loads on 3.0 but well, it doesn't say it works there. Looks like widgets have had a facelift. What was changed there? It is an interesting tool for my own work too, so I'd like to have it running. Any pointers before digging down the rabbit hole? Phil

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Mess in Theme hierarchy again
by Hilaire Nov. 25, 2014

Nov. 25, 2014

It just appear the Theme hierarchy is mess again, with what look like basic functionality methods appearing down in the hierarchy! Result: switching between theme makes text color unreadable. https://pharo.fogbugz.com/f/cases/14524/WateryTheme-broken-again -- Dr. Geo - http://drgeo.eu iStoa - http://istoa.drgeo.eu

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Fwd: [ci-announces] Storage maintenance planned tomorrow (2014/11/25)
by Christophe Demarey Nov. 25, 2014

Nov. 25, 2014

Hello, Pleas find below an announce of a maintenance on the Inria CI infrastructure. It means we will have to shutdown our slaves this afternoon and no CI job run will be available before tomorrow. Regards, Christophe. DÃ©but du message rÃ©expÃ©diÃ© : > De : Emmanuel Jeanvoine <emmanuel.jeanvoine(a)inria.fr> > Date : 24 novembre 2014 09:47:56 HNEC > Ã : ci-announces(a)inria.fr > Objet : [ci-announces] Storage maintenance planned tomorrow (2014/11/25) > RÃ©pondre Ã : Emmanuel Jeanvoine <emmanuel.jeanvoine(a)inria.fr> > > Dear users, > > A maintenance of the storage infrastructure is planned on 2014/11/25 from > 5pm to 11pm. In order to avoid issues, you are strongly encouraged to shut > down the virtual machines of your project before 5pm. > After that, the remaining virtual machines will be shut down by the IT > team. > > If you are interested in following this maintenance you can have a look > there: https://wiki.inria.fr/ciportal/Event_20141125_storage > > Thank you for your understanding, > Emmanuel > > -- > Emmanuel Jeanvoine Research Engineer > Inria Nancy - Grand Est Office B118 > http://www.inria.fr/nancy Tel +33 3 54 95 86 21

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CI down local time 17h-tomorrow
by Marcus Denker Nov. 25, 2014

Nov. 25, 2014

Hi, Ci will be down local time 1700 till tomorrow: > A maintenance of the storage infrastructure is planned on 2014/11/25 from > 5pm to 11pm. In order to avoid issues, you are strongly encouraged to shut > down the virtual machines of your project before 5pm. > After that, the remaining virtual machines will be shut down by the IT > team.

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Voyage,Mongo and Seaside...
by olivier auverlot Nov. 25, 2014

Nov. 25, 2014

Where must i initialize a mongo connection in a Seaside application when I use Voyage ? My application use the singleton mode of Voyage. What is the good place to create the singleton ? * in the initialize class method of mySeaside root WAComponent (It will called one time when Seaside initialize the hosted applications) * in the instance method initialize of my Seaside root WAComponent (It will called each time that's a user start to use the application) The second case seems to be better because the connection time is probably limited by Mongo or the connection could be broken. Someone have experimented good practices at this problematic ? Best regards Olivier ;-)

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New Cog VMs available
by Eliot Miranda Nov. 25, 2014

Nov. 25, 2014

at http://www.mirandabanda.org/files/Cog/VM/VM.r3148/. Normal service has resumed after the recent instability due to 64-bit work. CogVM binaries as per VMMaker.oscog-eem.956/r3148 Fix regression in primitive[SmallFloat]Truncated Fix some warnings and some 64-bit issues with the ThreadedFFIPlugin. Fix positive64BitIntegerFor: by fixing new generateSignedShiftRight:on:indent:. Symptom is LargePositiveInteger results from primGetPosition: for SmallInteger values. -- best, Eliot

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callback explanation
by stepharo Nov. 25, 2014

Nov. 25, 2014

Begin forwarded message: From: Eliot Miranda <eliot.miranda(a)gmail.com> Subject: Re: [Vm-dev] FFI callbacks Date: 25 Nov 2014 03:19:49 GMT+1 To: Squeak Virtual Machine Development Discussion <vm-dev(a)lists.squeakfoundation.org> Reply-To: Squeak Virtual Machine Development Discussion <vm-dev(a)lists.squeakfoundation.org> Hi Bert, On Mon, Nov 24, 2014 at 2:49 PM, Bert Freudenberg <bert(a)freudenbergs.de> wrote: How do they actually work? I want to know what information the thunk needs, and what happens when it is activated. I think SqueakJS would benefit from callback support. I'll try and write this up properly in a blog post tomorrow. But... Callback is a wrapper round a piece of executable code, a block, and a "signature" (see below). The executable code is wrapped by an FFICallbackThunk, an Alien, which is just a pointer to this code. Th code is allocated from a special pool of memory marked as executable. The address of the code is unique and is hence used as a key to identify the Callback and hence locate the block from the thunk. The FFI marshalling code should pass the address of the thunk when passing the Callback. Right now that has to be done explicitly. The thunk, when called, invokes thunkEntry, which is defined in e.g. platforms/Cross/plugins/IA32ABI/ia32abicc.c (it needs a different definition for each API). On x86 thinkEntry needs only to be invoked with the think and the stack pointer, since on x86 all arguments are accessible from the stack. On other platforms thunkEntry will need to be invoked with the register arguments. thunkEntry's job is to store the state necessary to return from the callback in an instance of either VMCallbackContext32 or VMCallbackContext64. These are aliens for the following structure: typedef struct { void *thunkp; char *stackptr; long *intRegArgs; double *floatRegArgs; void *savedCStackPointer; void *savedCFramePointer; union { long vallong; struct { int low, high; } valleint64; struct { int high, low; } valbeint64; double valflt64; struct { void *addr; long size; } valstruct; } rvs; jmp_buf trampoline; } VMCallbackContext; The structure lives in the stack frame of thunkEntry, hence one per callback. It does three things: 1. it identifies all the input arguments. These are accessible, depending on platform, through stackptr, intRegArgs and floatRegArgs. 2. it maintains the jmp_buf which can be used to longjmp back to the callback to return from it. 3. it has slots to hold the result to be returned from the callback (the union rvs). The argument to the longjmp (the value returned from the setjmp in thinkEntry) tells thunkEntry how to return the result, i.e. as a 32-bit value, a 64-bit value, a double or a struct. Once thinkEntry has packed up the state in its local VMCallbackContext, it uses if ((flags = interpreterProxy->ownVM(0)) < 0) { fprintf(stderr,"Warning; callback failed to own the VM\n"); return -1; } to "own" the VM. If the VM is single-threaded then this can check that the callback is being made on the same thread as the VM, and fail otherwise. If the VM is multi-threaded ownVM can block until the thread can enter the VM. It then calls-back into the VM using interpreterProxy->sendInvokeCallbackContext(&vmcc); which sends the message (found in the specialObjectsArray) #invokeCallbackContext: which is understood by Alien (see Alien class>>#invokeCallbackContext:). This method wraps up the input argument (the raw address of thunkEntry's VMCallbackContext) in the relevant Alien and invokes Callback's entry point: invokeCallbackContext: vmCallbackContextAddress "<Integer>" "^<FFICallbackReturnValue>" "The low-level entry-point for callbacks sent from the VM/IA32ABI plugin. Return via primReturnFromContext:through:. thisContext's sender is the call-out context." | callbackAlien type | callbackAlien := (Smalltalk wordSize = 4 ifTrue: [VMCallbackContext32] ifFalse: [VMCallbackContext64]) atAddress: vmCallbackContextAddress. [type := Callback evaluateCallbackForContext: callbackAlien] ifCurtailed: [self error: 'attempt to non-local return across a callback']. type ifNil: [type := 1. callbackAlien wordResult: -1]. callbackAlien primReturnAs: type fromContext: thisContext The sendInvokeCallbackContext machinery just constructs an activation of invokeCallbackContext: on top of the current process's stack, which is usually the process that called out through the FFI. Bit it doesn't have to be. threaded callbacks are too detailed for this brief message. Callback then locates the relevant marshalling method for the callback's signature (actually it does this when the Callback is created, but the effect is the same). Callback uses methods that identify themselves via pragmas to choose the relevant marshaller. e.g. for a qsort sort function callback the marshaller on x86 is Callback methods for signatures voidstarvoidstarRetint: callbackContext sp: spAlien <signature: #(int (*)(const void *, const void *)) abi: 'IA32'> ^callbackContext wordResult: (block value: (Alien forPointer: (spAlien unsignedLongAt: 1)) value: (Alien forPointer: (spAlien unsignedLongAt: 5))) So it fetches the arguments from the stack using Alien accessors, evaluates the block with them and then assigns the result via wordResult, and answers the type code back to invokeCallbackContext:, e.g. VMCallbackContext32 methods for accessing wordResult: anInteger "Accept any value in the -2^31 to 2^32-1 range." anInteger >= 0 ifTrue: [self unsignedLongAt: 25 put: anInteger] ifFalse: [self signedLongAt: 25 put: anInteger]. ^1 Then invokeCallbackContext: invokes the primitive to longjmp back to thunkEntry, supplying the return code that will allow thunkEntry to return the reslt correctly: VMCallbackContext32 methods for primitives primReturnAs: typeCode "<SmallInteger>" fromContext: context "<MethodContext>" <primitive: 'primReturnAsFromContextThrough' module: 'IA32ABI' error: ec> ^self primitiveFailed Then thunkEntry switches on the return code and returns to the caller. Note that sendInvokeCallbackContext and primReturnAsFromContextThrough conspire to save, set and restore the VM's notion of what the C stack is in the VMCallbackContext's savedCStackPointer & savedCFramePointer, growing the stack on callback, and cutting it back on return. There's a variable in the VM, previousCallbackContext, that primReturnAsFromContextThrough uses to make sure returns are LIFO. I imagine that somehow the VM's state needs to be saved, then the context that defined the block is activated, and then the VM would run the block until it returns (or until the return prim is called?), then the VM's state would need to be restored to what it was, and the result is passed back by the thunk returning. That's right. Am I close? Since the callback can happen at any time, and it could do anything, saving the whole VM state seems daunting. Provided that the callback occurs from the context of a callout there are no problems. Threaded callbacks take some more doing. Basically the VM needs to b sharable between threads. This is the threaded VM prototype. If you absolutely need threaded callbacks we should have a serious talk. This is not trivial to productise. HTH -- best, Eliot

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How to import an icon inside Pharo
by kilon alios Nov. 24, 2014

Nov. 24, 2014

Hey guys any idea how to import a icon inside pharo and how to use it ? I have seen that pharo uses a sort of string representation of the icon image . Anyone has experience with this ?

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[pharo-project/pharo-core]
by GitHub Nov. 24, 2014

Nov. 24, 2014

Branch: refs/tags/40384 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] 27151e: 40384
by GitHub Nov. 24, 2014

Nov. 24, 2014

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: 27151ed904db256d72e83d85722db500969b23b9 https://github.com/pharo-project/pharo-core/commit/27151ed904db256d72e83d85… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2014-11-24 (Mon, 24 Nov 2014) Changed paths: A Kernel.package/SmallInteger.class/class/class initialization/initialize.st A Kernel.package/SmallInteger.class/class/class initialization/startUp_.st M Kernel.package/SmallInteger.class/class/constants/maxVal.st M Kernel.package/SmallInteger.class/class/constants/minVal.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script384.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40384.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M System-Support.package/SmalltalkImage.class/class/initialization/initializeStartUpList.st Log Message: ----------- 40384 14506 Add class inst vars to hold SmallInteger class>>minVal and maxVal. https://pharo.fogbugz.com/f/cases/14506 http://files.pharo.org/image/40/40384.zip

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