similar to: [LLVMdev] JIT crash takes down host-application

Ok, thank you for your explanation. Is it possible for forked processes to share data? Especially for the child process to send some data to the parent? -Frank 2010/7/18 Nick Lewycky <nicholas at mxc.ca> > Frank Fuchs wrote: > >> Hi, >> >> I'm doing some tests concerning the embedding of LLVM and clan in my >> application. >> Now I stumbled across

Frank Fuchs wrote: > Hi, > > I'm doing some tests concerning the embedding of LLVM and clan in my application. > Now I stumbled across the following ... which disturbs me. If the jitted program crashes, > like e.g. if it contains an assert(0==1) or calls an external function which cannot be resolved, > the hosting app goes down as well. There seems no error catch. > >

Is there a way to intercept the calls to abort() or exit(), specifically ? Disabling all external symbol resolution seems not really feasable since I need some std libs. -Frank 2010/7/19 Garrison Venn <gvenn.cfe.dev at gmail.com> > You could use shared memory or the equivalent of UNIX domain sockets. On a > UNIX system, you will also probably want to catch > SIGCHLD along with

You could use shared memory or the equivalent of UNIX domain sockets. On a UNIX system, you will also probably want to catch SIGCHLD along with implementing "nowait" handling behavior in the parent. This is of course a low level approach. Higher level libraries that you may be using, or other OSs may provide their own wrappers. Garrison On Jul 19, 2010, at 4:05, Frank Fuchs wrote:

Hi! I'm trying to develop JIT compiler using LLVM as its backend. I know LLVM itself supports JIT-compiling, but I need to generate IR first. I don't want to generate IR before function is actually needed. How can I achieve this? If it matters, I have prototypes for all functions I'm going to use. Best regards, Milovanov Victor.

lost wrote: > Hi! > > I'm trying to develop JIT compiler using LLVM as its backend. I know > LLVM itself supports JIT-compiling, but I need to generate IR first. > I don't want to generate IR before function is actually needed. How > can I achieve this? > If it matters, I have prototypes for all functions I'm going to use. See

Ok than, but how to insert a call to an undefined function? > See ExecutionEngine::InstallLazyFunctionCreator(). > http://llvm.org/doxygen/classllvm_1_1ExecutionEngine.html#6a126d6cd1fa07a4331179597de0c46a > > Nick >

Out of curiosity, I'm replacing the JIT with MCJIT on my compiler. As all "external" functions are provided by the language's FFI mechanism, it does MyExecutionEngine->DisableSymbolSearching(); MyExecutionEngine->InstallLazyFunctionCreator(&MyLazyFunctionCreator); which works fine with the JIT. However, MCJIT insists on resolving unknown symbols by searching them

Óscar Fuentes <ofv at wanadoo.es> writes: > Out of curiosity, I'm replacing the JIT with MCJIT on my compiler. As > all "external" functions are provided by the language's FFI mechanism, > it does > > MyExecutionEngine->DisableSymbolSearching(); > MyExecutionEngine->InstallLazyFunctionCreator(&MyLazyFunctionCreator); > > which works fine

i have: class Library << ActiveRecord::Base has_many :books end class Book << ActiveRecord::Base belongs_to :library end in my controller i have: render :xml=> Library.find(:all).to_xml(:include=>books) but, i would like put a condition in the books ( e.: pages >= 100 ) i would like to create a xml with all Libraries, but books with pages more than 100) How to

On Sat, Apr 17, 2010 at 2:15 PM, Nick Lewycky <nicholas at mxc.ca> wrote: > lost wrote: >> Ok than, but how to insert a call to an undefined function? > > You need to have the function declaration and insert a call to that. > Once your LazyFunctionCreator is called, you fill in the body and call > JIT->getPointerToFunction() on it and return that result. > > I

Hello, (im new to LLVM , so pl excuse if this is a naive q). Can someone provide info on what runtime optimizations are done in LLVM? do you have something along lines of JVM's hotspot feature? How efficient is the optimized code vis-a-vis native code? thanks -kamal ____________________________________________________________________________________ Never miss a thing.

Hello, I am a novice at using the llvm api to do much of anything. I am trying to lazily apply certain optimisation passes on select functions when jitting a large program. It is undesirable to me to load the entire program as IR code and then generate code in memory for it (time concerns). It seems that there is a function in MCJIT "loadObjectFile" that would suit my purposes,

Hello, I'm writing a virtual machine that functions as a sandbox based on llvm. In order to prevent programs from accessing memory that has not been allocated to them, I want to replace calls to malloc and free with calls to a logged functions that will record the memory that is being allocated to the program. Is it possible to cast/convert a MallocInst or FreeInst to a CallInst? Thanks,

> As far as I know, ObjectFile is either COFF, ELF or MachO format, > statically compiled. But the pass manager for applying optimisation > passes works only on llvm-ir. I would not need to apply optimisations on the parts of the program in the object file. These are meant to be optimised beforehand. The only parts I want to run passes on are specific function that I know

Anyone on the list going to The Ajax Experience in San Francisco May 10? _______________________________________________ Rails-spinoffs mailing list Rails-spinoffs-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org http://lists.rubyonrails.org/mailman/listinfo/rails-spinoffs

On Oct 16, 2009, at 4:43 AM, Daniel Waterworth wrote: > Never mind, I used ExecutionEngine's InstallLazyFunctionCreator and > DisableSymbolSearching to cause malloc and free calls to be handled > by my logging functions. Sorry for the unnecessary list mail. No problem, this is a better way to go. The MallocInst and FreeInst instructions are about to be removed from LLVM IR.

https://bugs.freedesktop.org/show_bug.cgi?id=62835 Priority: medium Bug ID: 62835 Assignee: nouveau at lists.freedesktop.org Summary: Screen freezes after resume from s2ram QA Contact: xorg-team at lists.x.org Severity: normal Classification: Unclassified OS: Linux (All) Reporter: pontus.fuchs at gmail.com

so I am trying to sum month over month the amount that a user has posted. So for example: User 1: Jan $3000 Feb $4000 March $1500, etc. I can get this to work if I sum totals (aggregate of all users) but just not by user. Here is my code in the controller: def index @users = User.find :all, :order => ''name ASC'' @deal_groups = Deal.find(:all).group_by {|t|

https://bugs.freedesktop.org/show_bug.cgi?id=59057 Priority: medium Bug ID: 59057 Assignee: nouveau at lists.freedesktop.org Summary: Black screen after resume from s2ram QA Contact: xorg-team at lists.x.org Severity: normal Classification: Unclassified OS: Linux (All) Reporter: pontus.fuchs at gmail.com