I want to create a function that will retry an expression if it fails. Here's my working version: retry <- function(.FUN, max.attempts=3, sleep.seconds=1) { x <- NULL if(max.attempts > 0) { f <- substitute(.FUN) x <- try(eval(f)) if(class(x) == "try-error") { Sys.sleep(sleep.seconds) return(suppressWarnings(...
Today, in my C++ multi-platform code, I have a try-catch around every function. In every catch block I add the current function's name to the exception and throw it again, so that in the upmost catch block (where I finally print the exception's details) I have the complete call stack, which helps me to trace the exception's cause. Is it...
Our team is being required to document every method in our code, and describe what's getting passed in and out and such. Is it possible to auto-generate a document containing a full call hierarchy tree starting at a function and going down to all the possible call expansions? How? Using eclipse, spring, hibernate. Also we have access...
This question has been asked before and there have been windows-specific answers but no satisfactory gcc answer. I can use set_terminate() to set a function that will be called (in place of terminate()) when an unhandled exception is thrown. I know how to use the backtrace library to generate a stack trace from a given point in the progr...
Hi, how can I print the full call stack when a std::exception raises? ...
If I want to know what is stored in a ... argument within an R function, I can simply convert it to be a list, like so foo <- function(...) { dots <- list(...) print(dots) } foo(x = 1, 2, "three") #$x #[1] 1 # #[[2]] #[1] 2 # #[[3]] #[1] "three" What I can't figure out is how to evaluate ... in the calling function. In this next...
Hi, it's my call stack window when i got "Invalid Pointer Operation" Error : What is the reason for this error? Thank you ...
I have been thinking a lot lately about how code gets organized in a layered way. I have been thinking of four different ways: Instantiation -- specifically objects are instances of classes. However, in several languages (like python), classes are also objects that were instantiated from a metaclass. So you can end up with an instan...
Which tool can I use to see the call stack for a running process? msdn link , but do I need to have the executable in debug mode? What are the other tools/ways by which i can see the call-graph / resource access graph for a running process? I have an external library from a developer to construct my own machine vision algos, but the ex...
Hi, I'm writing a recursive flood-fill algorithm to find connected components in an image, my code compiles and runs well with MSVC 2008 compiler; but the mingw-compiled binary crashed at runtime. After I converted the algorithm to non-recursive with std::stack, everything goes well. But what if I must use recursive algorithm in some...
I am trying to port a SharePoint 2007 site collection feature to 2010. During the feature activation, SharePoint shows the "yellow screen of death" stating "The current custom error settings for this application prevent the details of the application error from being viewed.". AFAIK I have configured everything that is need to see the e...
When debugging in Visual Studio, if symbols for a call stack are missing, for example: 00 > HelloWorld.exe!my_function(int y=42) Line 291 01 dynlib2.dll!10011435() [Frames below may be incorrect and/or missing, no symbols loaded for dynlib2.dll] 02 dynlib2.dll!10011497() 03 HelloWorld.exe!wmain(int __formal=1, int __formal...
In Javascript, suppose I want to perform some cleanup when an exception happens, but let the exception continue to propagate up the stack, eg: try { enterAwesomeMode(); doRiskyStuff(); // might throw an exception } catch (e) { leaveAwesomeMode(); throw e; } doMoreStuff(); leaveAwesomeMode(); The problem with this code is that ...
Hi! Does anybody know if/how I can read from the callstack from a specific address? suppose I have a offset address from the base address of the callstack, how can I get the base address? thanks :) ...
Hi All, I am working on a sub project(.NET) which deals with exceptions. Below is my requirement When an exception occurs, the exception assembly must capture CPU information Method which caused the issue Data which caused the issue Environment details (path and other information) In above all these, the toughest part would be ge...
Hi! I'm trying to read the return address of the method but of another memory. so I'm getting the frame pointer, and read the value of the return value. As far as I understand I'm supposed to get a value equals to m_stackframe.AddrReturn.Offset, but: If I add the Esp to the frame pointer address - ReadProcessMemory returns false. If I ...
Hi! Does anybody know of a better/ faster way to get the call stack than "StackWalk"? I also think that stackwalk can also be slower on methods with a lot of variables... (I wonder what commercial profilers do?) I'm using C++ on windows. :) thanks :) ...
> vcam.ax!CopyMediaType() + 0x49 bytes vcam.ax!CMediaType::Set() + 0x41 bytes vcam.ax!CMediaType::operator=() + 0x2f bytes vcam.ax!CVCamStream::SetFormat(_AMMediaType * pmt=0x00000000) Line 201 C++ FlashPlayer.exe!005641be() Can someone explain the above line by line? ...
Hi! Does anybody know where relatively to the frame pointer is the return address of the function? Is there a difference between windows and unix? thanks :) ...
Is there any way to dump the call stack in a running process in C or C++ every time a certain function is called? What I have in mind is something like this: void foo() { print_stack_trace(); // foo's body return } Where print_stack_trace works similarly to caller in Perl. Or something like this: int main (void) { //...