stack-trace

问题 Everything below is from the main page of www.pythontutor.com (a fantastic tool and website by the way). Here's some code Here's what the author describes as the "global frame" and the "stack frames" at the current point of execution for the above code: My question: What's the difference between "global frame" and the "stack frame"? Is this terminology even correct (I googled around and got all kinds of different answers)? 回答1: frames are actual python objects that you can interact with:

问题 I sometimes have to look at thread dumps from a Tomcat server. However, this is a very slow process as my application uses thread pools with a couple of hundred threads. Most of the thread dumps I look at include the same stack trace for many of the threads as they are idle waiting for work. Are there any tools which would parse a thread dump and only show me the unique stack traces along with a count of the number of threads in each state? This would allow me to quickly ignore the tens or

问题 I have this variable in a big php script that I want to trace back to where/when and what value it was instantiated. Is there a function/api or debugging techniques to do this? 回答1: If you're using PHPStorm you can set breakpoints and inspect the values of variables. http://blog.jetbrains.com/phpstorm/2013/12/just-in-time-debugging-and-php-exception-breakpoints-with-phpstorm-and-xdebug/ You'll need xdebug installed as well. 回答2: You can use debug_print_backtrace() function. http://php.net

问题 What is the difference between the terms "Call Stack" and "Stack Trace" ? 回答1: A call stack is typically "the current stack of operations" - i.e. while it's running. A stack trace is typically a copy of the call stack which is logged at some sort of failure, e.g. an exception. In other words, while you're debugging you will look at the current call stack - but when you look at logs, you'll get a stack trace. At least, that's my interpretation of the terms :) 回答2: Call stack is a data

问题 React Native mobile application is working very slow on every click . I am using react native v0.40.0 and following are the dependencies of my project. { "analytics-react-native": "^1.1.0", "apisauce": "^0.7.0", "babel-preset-es2015": "^6.18.0", "es6-promise": "^4.0.5", "flow-bin": "^0.36.0", "geolib": "^2.0.22", "immutable": "^3.8.1", "intl": "^1.2.5", "isomorphic-fetch": "^2.2.1", "lodash": "^4.17.4", "lodash.range": "^3.2.0", "prop-types": "^15.5.10", "raven-js": "^3.13.1", "react": "^15.4

问题 I'm running Django 1.0 and I'm close to deploying my app. As such, I'll be changing the DEBUG setting to False. With that being said, I'd still like to include the stacktrace on my 500.html page when errors occur. By doing so, users can copy-and-paste the errors and easily email them to the developers. Any thoughts on how best to approach this issue? 回答1: Automatically log your 500s, that way: You know when they occur. You don't need to rely on users sending you stacktraces. Joel recommends

问题 I would like to print out my debug message with line number in VB.net application. I did like this, Dim st As StackTrace Dim sf As StackFramee st = New StackTrace(New StackFrame(True)) sf = st.GetFrame(0) Console.WriteLine.("Line " & sf.GetFileLineNumber()） I wanna put the snippet to a class, everytime I call logMsg method to log my message with line number in source code. But I found if I put the snippet above into a class, the line number was always same, that's the line which I new 'st'.

问题 I have a very short test file: let print_backtrace () = try raise Not_found with Not_found -> Printexc.print_backtrace stdout;; let f () = print_backtrace (); Printf.printf "this is to make f non-tail-recursive\n";; f (); I compile and run: % ocamlc -g test.ml % OCAMLRUNPARAM=b ./a.out Raised at file "test.ml", line 1, characters 35-44 this is to make f non-tail-recursive Why isn't f listed in the stack trace? How can I write a function that will print a stack trace of the location it's

问题 I have some managed code that calls to a method inside some native DLL(i have the appropriate symbol files). Sometimes, that native method throws an exception which I catch in my managed code. However, when i print the stacktrace from my caught exception, I see only managed code (the last frame is the call to the native code .. but it don't see the stacktrack within the native code). How can I obtain the native callstack as well? *When i'm debugging the code, i am able to step into the native

问题 Assume I have the following: typedef struct { char *name; char binding; int address; } Fn_Symbol //definition of function symbol static Fn_Symbol *fnSymbols; //array of function symbols in a file statc int total; //number of symbol functions in the array and file static void PrintBacktrace(int sigum, siginfo_t * siginfo, void *context) { printf("\nSignal received %d (%s)\n", signum, strsignal(signum)); const int eip_index = 14; void *eip = (void *)((struct ucontext *)context)->uc_mcontext