callstack

问题 My goal is to save in a file the callstack state when an exception is raised. But I have one major restraint: I cannot touch any of the existing code. My goal is to implement that in a context where I'm unaware of the current workflow. So I can use it in any C# Project. To do so I need to have access to all the nested methods that lead to the exception but also all the method's arguments. Until now I used postsharp OnMethodBoundaryAspect which allow me to define OnEntry, OnSucess, and

问题 Here is a made up example of nested functions with functions passed as parameters and functions returned: function foo() { let x = 100 function bar(a, b) { function mul(cb) { let m = x * a cb(m) } function add(cb) { let m = x + b cb(m) } function update(m) { x = m } mul(update) add(update) console.log(x) } return bar } let bar = foo() bar(2, 3) // => 203 bar(2, 3) // => 409 bar(2, 3) // => 821 bar(2, 3) // => 1645 Without figuring out potential ways in which these functions could be optimized

问题 Is there a way to switch to user mode of a particular process in a kernel dump while doing postmortem debugging ? I remember doing this while live debugging using the .process command. 回答1: .process also works in kernel dumps. First, you can find your process using !process 0 0 myprocess.exe and then switch to that process using .process <address> where <address> is the hex number after PROCESS . Note that you are still kernel debugging and you have only the physical memory of that process

问题 From Visual Studio, I'm accustomed to a call stack showing up at any breakpoint. Does Chrome have a call stack feature where I can see what functions preceded my breakpoint? If not, is there a substitute (3rd party solution that works with Chrome?) that developers use to see what functions led to a breakpoint? Edit: to be clear, I was expecting the call stack to appear within the javascript console in Chrome. 回答1: I don't know what version of Chrome you're using. I'm using Chromium 17 and the

问题 From Visual Studio, I'm accustomed to a call stack showing up at any breakpoint. Does Chrome have a call stack feature where I can see what functions preceded my breakpoint? If not, is there a substitute (3rd party solution that works with Chrome?) that developers use to see what functions led to a breakpoint? Edit: to be clear, I was expecting the call stack to appear within the javascript console in Chrome. 回答1: I don't know what version of Chrome you're using. I'm using Chromium 17 and the

问题 Let's say I have a nasm function like this: inc: mov rax,[rsp + 8] add [rax],BYTE 1 ret And I am calling this function like this: push some_var call inc I want to pass an argument to the function through the stack, so I push some_var and then call my function. In the function my item is second on the stack so I take it like: mov rax,[rsp+8] My question is: after calling function should I somehow pop my argument from the stack? If so, can I somehow delete it from the stack, I mean pop it, but

问题 There's a library which calls my method with a few arguments. I'd like to receive another argument, but the library doesn't provide it to the method it calls. By decompiling the library, I can see that it has the argument, and it's assigned to an instance variable (not private, but not public either.) I know I can get at the variable using reflection if I have the instance, but I don't have the instance, either. Is there a way I can get at the instance? SecurityManager has getClassContext(),

问题 I try to find the exact line of a call in the backtrace in C++ program. Right now I am using these lines (from the man page of backtrace) to get the trace: void *bt_buffer[1000]; char **bt_strings; int bt_nptrs = backtrace(bt_buffer, 1000); bt_strings = backtrace_symbols(bt_buffer, bt_nptrs); In bt_strings I find lines of the form ./prog() [0x402e42] Now I take the address (the hex string) and feed it to addr2line. That sometimes results in apparently wrong line numbers. Internet search led

问题 This is different to other questions regarding an error message in Node that reads RangeError: Maximum call stack size exceeded in that I know exactly why I'm getting this error message. It's happening because I'm recursing, recursing quite a lot in fact. Thanks. 回答1: From node --help : node --max-stack-size=val Update: as the comments indicate, even though the help text still lists the --max-stack-size option, in node v0.10.x you need to use --stack-size instead. node --stack-size=val 回答2:

问题 In kernel version before 5.2, I use save_stack_trace_tsk to retrieve call stack. But this method is no longer available in Linux kernel 5.2+, what should I use? 回答1: This question seemed so tempting so I did some digging here is my findings. TLDR; stack_trace_save () functions replaced by arch_stack_walk() interfaces * this is part of consolidation plan and remove duplicate code. linux commit 214d8ca6ee854 provide common architecture to walking stack trace. the new interface called arch_stack