function-calls

Dilemma related to function call's increment of SP

由 China☆狼群 提交于 2019-12-11 09:18:23
问题 In case of push during function call, why the stack pointer moves to a smaller value by subtracting 4 times the number of registers to be pushed on the stack? I got this while reading Understanding the stack 回答1: In the same page, it is clearly mentioned about the memory layout of stack :- It's useful to think of the following aspects of a stack. stack bottom The largest valid address of a stack. When a stack is initialized, the stack pointer points to the stack bottom. stack limit The

C++ class function in assembly

由 不打扰是莪最后的温柔 提交于 2019-12-11 06:46:34
问题 Hello Community I am look at C++ assembly, I have compiled a benchmark from the PARSEC suite and I am having difficulty knowing how do they name the class attribute functions in assembly language. for example if I have a class with some functions to manipulate it, in cpp we call them like test.increment(); After some investigation I found out that this function is atomic_load_acq_ptr represented as: _ZL19atomic_load_acq_intPVj in assembly, or at least this is what I have found out. Let me

Is there an easier way to give a function an alias name in C#

由 若如初见. 提交于 2019-12-11 03:47:49
问题 BACKGROUND: In the API I am porting, there are a large number of functions prefixed with sqlite3_. They are encapsulated in a class named Sqlite3, so the function call is Sqlite3.sqlite3_... I've created a number of alias calls, similar to the following, //C# alias for call public static void result_error_toobig(sqlite3_context pCtx) { sqlite3_result_error_toobig(pCtx); } //Native call public static void sqlite3_result_error_toobig(sqlite3_context pCtx) { Debug.Assert(sqlite3_mutex_held(pCtx

Confusion around function call resolution

由 旧巷老猫 提交于 2019-12-09 17:08:55
问题 This question is inspired by this one. Consider the code: namespace ns { template <typename T> void swap(T& a, T& b) { using namespace std; swap(a, b); } } After some test with GCC, I found that swap(a, b); resolves to 1) std::swap if T has overloaded std::swap (e.g., standard container types) 2) ns::swap otherwise, leading to infinite recursion. So, it seems that the compiler will first try to find a match in the namespace ns . If a match is found, the search ends. But this is not the case

Is it possible to emulate a function using your own data type?

由 烈酒焚心 提交于 2019-12-09 02:39:49
问题 Is it possible to emulate a function with your own data type with some GHC extension? What I want to do is e.g. (imaginary syntax) data MyFunc = MyFunc String (Int->Int) instance (Int->Int) MyFunc where ($) (MyFunc _ f) i = f i inc = MyFunc "increment" (1+) test = inc 1 I.e. data that carries some meta-information with it and can be pattern matched, but which can still be called like a regular function. Now, I know that I could define my own infix operator like $$ and call inc $$ 1 , but

how do procedure calls work in assembler?

由 泪湿孤枕 提交于 2019-12-08 17:11:28
问题 I just started tinkering with ASM and I'm not sure if my understanding of procedure calls is correct. say at some point in the code there is a procedure call call dword ptr[123] and the procedure consists of only one command, ret: ret 0004 what would be the effect of this procedure call, and where would the return value be stored? I read somewhere that a return value of 2 bytes would be stored in AX, but when I replace the procedure call by mov AX, 0004 (together with the necessary NOPs) the

Componetizing jQuery functions calls. Best practices?

由 柔情痞子 提交于 2019-12-08 02:45:08
问题 I'm building a site that is going to consist of components. A component defined as a particular set of HTML and CSS and jQuery. Each page of the site will consist of many components. Per best practices, we're putting our javascript block at the bottom of the page. We load the needed .js files, and then I'm planning on calling the functions needed: doThisThing(); doThatThing(); Let's say I have Component X. I want to call a function whenever that component appears on the rendered page. From a

Calling C++ function from a C code

由 余生颓废 提交于 2019-12-06 12:35:58
问题 So I have looked here and here and at a few other links mentioned in the first question and I have the following code already: The .cpp file: #include "arp_piping.h" #include <string> #include <iostream> #include <stdio.h> std::string exec(char* cmd, FILE* pipe) { pipe = _popen(cmd, "r"); if (!pipe) return "ERROR"; char buffer[128]; std::string result = ""; while(!feof(pipe)) { if(fgets(buffer, 128, pipe) != NULL) result += buffer; } _pclose(pipe); return result; } The header/linker file:

Can JavaScript call a PHP function directly, or do I need separate php file to call the function?

由 心不动则不痛 提交于 2019-12-06 11:16:50
I am doing some basic Ajax stuff (not jquery.. just learning the basics), and I have a general structure set up where html calls a javascript function which sends data to and runs a specific php page. But what if I just need to run a php function that's already defined in functions.php. Is that possible at all? I'm getting tired of making new php files for every task ;) You could define a class in php to handle stuff like this, such as: functions.php: class MyFunctions { function foo() { // code here // if you need to pass in some parameters, you can do it via jQuery and fetch the data like so

Componetizing jQuery functions calls. Best practices?

由 别来无恙 提交于 2019-12-06 10:17:29
I'm building a site that is going to consist of components. A component defined as a particular set of HTML and CSS and jQuery. Each page of the site will consist of many components. Per best practices, we're putting our javascript block at the bottom of the page. We load the needed .js files, and then I'm planning on calling the functions needed: doThisThing(); doThatThing(); Let's say I have Component X. I want to call a function whenever that component appears on the rendered page. From a jQuery perspective, what would be the ideal way to handle this? Some options: 1) Always call the
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