I want to write RPC program in C for matrix multiplication - My question is that during serialization & deserialization process ,what shall I keep in mind? I recently got an error "call failed: RPC: Can't decode result " ,what this means?
My program is simply send an array A and return 3*A.
So as a learning exercise, I am trying to read and write a binary tree to a file. After googling around, I decided to use a preorder traversal (including null nodes) to write the binary tree to the file. I got stuck trying to read a tree from a file. I can't figure out how to create an unknown number of nodes when they are needed. I could use an array, but that just seems bulky - plus it could run out of space. Is that what I have to do? I've heard of vectors before, but not very much.
View 5 Replies View RelatedI have to migrate C++ source which is compiled with MinGW-gcc to be compiled with VS2013, and have one issue with one macro used for serialization.
Here is macro:
#define IMPLEMENT_SERIALIZE(statements)
unsigned int GetSerializeSize(int nType, int nVersion) const
{
CSerActionGetSerializeSize ser_action;
const bool fGetSize = true;
[Code] ....
Here is place in code were it is call (in class declaration):
IMPLEMENT_SERIALIZE(({
if (!fRead) {
uint64 nVal = CompressAmount(txout.nValue);
READWRITE(VARINT(nVal));
[Code] .....
When compile received errors:
main.h(555): error C2059: syntax error : '{'
main.h(555): error C2143: syntax error : missing ';' before '{'
line 555 is end of macro call ( "})").
How should look using of this macro in order to avoid that errors?
I'm trying to serialize a struct which contains two or more other types of sturct. But it seems that serialization does not work. Below is sampel code :
/SimpleData.hpp
Code:
#include <boost/serialization/access.hpp>
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/optional.hpp>
#include <boost/serialization/map.hpp>
#include <boost/serialization/shared_ptr.hpp>
namespace A {
[code].....
I have a program that I can only run one instance of. When I try to start it a second time, it doesn't do anything. I would like to create a script that loads the program in a way that I can run multiple instances. Since I assume the program checks the process tree on startup to see if an other instance is already running, I figure disabling access to the process tree could do the trick.
View 6 Replies View Related1. I want to do 2 while at the same moment. Exactly I want one while which is checking the time and it should di something every X second and the other should check something parallel.
2. How i can write the program what i write automaticly into the autorun on every windows pc.
3. Can i change the process-name when the programm started?
4. Can i save my .exe under another name in the autorun
I am trying to create a program that would execute a foreground process. I have this code for the foreground process
Code:
#include <stdio.h>
#include <signal.h>
int main() {
int temp;
printf("We are in the current program
[Code] ....
And this is my main program
Code:
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
int main() {
signal(SIGINT, SIG_IGN);
[Code] ....
My main program stops executing after the process "./scanf" executes and there fore does not print the line "How are You"...
I want to main program to continue executing after "./scanf" finishes. How to achieve that?
What I have: A basic program for infinitely looping after and testing for an active process. It has a delay system built in to make it so it is not constantly iterating.
What I need: A way to get process IDs from other Processes other than my program. With a way to use that ID to detect if that process is active on the computer or not.
Parts of my code that need changing:
/* Code for handling the process would go here */
/* Code for detecting the target would go here */
What the goal of my program is: Perform operations to terminate the process of cmd.exe when it is active on the user's computer. Then output the status of the process and the time it took to find that process to the user.
It contained functions that I needed, but I need more information on how to apply them to other processes instead of the parent of my program and its' children.
Here is the code I prewrote for this so far:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define ZERO 0
#define INFINITE 1000000000000000
[Code] .....
The brief is to write a program that implements a musically-interesting or musically-useful audio effect/process in C without external libraries other than those prescribed (PortMedia/PortMIDI/PortSMF/PortAudio, Libsndfile).
View 6 Replies View RelatedI have app that has while true on input listening to changes and then in some condition needs to open simple gtk app, and afterwards continue listening.
I thought that i could fork gtk part, and kill it when it is not needed.
But am not finding much examples on internet. 2 processes dont share data. Can child process start a gui app? And is this a good approach.
I am looking for a way to run a process form memory, without having any executable. The application will be kept inside a resource and will be extracted during run time. It should be then started as a new process. I couldn't find a solution that works also on x64
View 5 Replies View RelatedI need my Unix program to generate a directory with a format like this: "hinesro.<pid>". I have some code that mostly works, except for the directory ends up with a question mark on the end, like this: "hinesro.12345?". I need it to just display the directory without this question mark. Here is my code:
Code:
// Using headers sys/types.h, sys/stat.h, unistd.h, and stdio.h
int pid = getpid();
char prefix[] = "hinesro.";
char fileName[0];
sprintf(fileName, "%s%d
", prefix, pid);
[Code]...
i have read that inheritance slows down the process.because a_class -> b_class -> c_class it goes thorough many classes to find a function or a value. people advices not to do it more than a few times. what if instead of inheritance we are using headers, would it slow down the process also??i mean which one is faster? and arent both the same when we use headers or used inheritance.
View 3 Replies View RelatedI am looking into how to create zombie process. They are created when parent process don't call wait() and hence they are not removed from the process table. How do I create zombie process in C++? What part of the code when missed, make a process/thread zombie? Is it the pthread_join()?
View 2 Replies View RelatedAm developing windows forms application where in my form am fetching data into list from some object which takes around 2 minutes to complete processing so meantime i want to show progress bar before starting process till it ends with percentage. I have return a code to do multitasking but it is throwing error as "Cross-thread operation not valid: Control 'listOrg' accessed from a thread other than the thread it was created on".
private void btnOrg_Click(object sender, EventArgs e) {
try {
// To report progress from the background worker we need to set this property
backgroundWorker1.WorkerReportsProgress = true;
[code]....
I would like to ask about editing proccess memory.For example,I would like to create some program for a multiplayer game which I play.How do I work with memory adresses and what are commands for it.
View 1 Replies View RelatedI was given an assignment where I have to input two points (four integers) on a Cartesian plane from a file and then process it using functions. My professor is very particular so the comments are a bit excessive, but here's what I have.
double radiusFn(double, double, double, double);//4 double values, one for each point. All points are needed for the calculation of distance in this function.
double diameterFn(double);//Only uses one double value - the radius. Both functions below use the same value.
double circumferenceFn(double);
double areaFn(double);
int main() {
[code].....
The file reads:
Quote
1 2 3 4 5 6 7 8 9 10 11 12
how I can run this as a separate process from the parent program, like a child process,
and return the result back to the parent program.
this script is as follows.
if file "/Stuff/s" exists then continue to run, if file "/Stuff/t" exists, then print "started" if file "/Stuff/t" does not exists, then print "stopped"
if file "/Stuff/s" does not exist then print "quit" and then quit.
Code:
void controlxmmscheck( ) {
if( access( "/Stuff/s", F_OK ) != -1 ) {
xmmscheck
} else {
[Code]....
tell me which .dll or library I'm supposed to use to link this program:
#include <iostream>
using namespace std;
void antpost (int num, int& anterior, int& posterior) {
anterior = num-1;
posterior = num+1;
[Code] ....
I think my linker needs an additional #include to be able to deal with int& anterior and int& posterior. I'm not sure as I'm new to C++. My version of Dev-C++ is Orwell V5.8.3.
I'm wondering whether it's possible to implement MPI to execute a process in parallel from deep within a C++ solution.
I've created a solution on VS2005 that links to several static libraries, and within one of these libraries there is a set series of tasks that require execution many times - they're independent so I'd like them to execute them using MPI if possible to speed up the run time.
The pseudo-code is:
Code:
for(i = 0; i < n; i++) // n is number of times to execute process {
PerformTask(data[i]); // perform the tasks required for each iteration of process
}
So, instead of conducting the tasks within PerformTask() in series n times, I want to split the array data between multiple processes such that they can each be allocated an even proportion of data to perform the tasks on. Pretty textbook reason for wanting MPI, right?
Now, I've read up and understood the basics of MPI implementation, but all the examples I've seen are called within the main() function of the program. But I need to do all this from within a static library, is this possible?
I've made some early attempts at implementing this, but get an error indicating the process wasn't initialised: "Error encounted before initializing MPICH", which I assumed would be due to trying to make the MPI calls outside of the main() function.
is this possible? How do i inject html into a process like firefox.exe or iexplore.exe? any tutorials/ starting point?
View 1 Replies View RelatedI'm creating a small command line game in C. I have never done anything cross platforms, but this is small enough (so far) that it might not be too bad.
When I am done, I'm not sure how it will be distributed: Either I will just send people the C files and say "compile on your system with these options", or I will just have executables for various systems. Probably Windows 7/8, Ubuntu, CentOS, and whatever I can find to test on.
I right now I'm testing/developing on Windows 7 using MinGW. So my questions are: while I'm developing, how should I be compiling/testing it?
I am starting to use contiki and learn c programming for my summer internship. I have to calculate the mean of the ongoing process of refrigerator power. I made the code like this
Code:
#include <stdlib.h>
#include <stdio.h>
#include <homadeus/processes/fridge_process.h>
#include <homadeus/devices/78M6610.h>
#include <homadeus/utils/utils.h>
float global_variable;
int current_state = 0; //down =0, up =1
[Code]....
How it gets the value of power is handled already. Every one second, it will display the power consumed (get_instant_power()). I don't know how to start and end the sample numbre. If I start by 1 then how should it be until? Also, is it possible if I store the power in array to accumulate?
This code will read the running process from OS and display it (C++). Specifically, the OS here is Windows XP. The Problem(error) is in (i think) prototype. By the way, it displays following errors.
Error 1 : error LNK2019: unresolved external symbol _EnumProcesses@12 referenced in function _main
Error 2 : error LNK2019: unresolved external symbol _GetModuleBaseNameA@16 referenced in function "void __cdecl DisplayProcessNameAndID(unsigned long)" (?DisplayProcessNameAndID@@YAXK@Z)
Error 3 : error LNK2019: unresolved external symbol _EnumProcessModules@16 referenced in function "void __cdecl DisplayProcessNameAndID(unsigned long)" (?DisplayProcessNameAndID@@YAXK@Z)
Error 4 : fatal error LNK1120: 3 unresolved externals C:Documents and SettingsWindowsMy DocumentsVisual Studio 2008ProjectsaDebuga.exe
#include <afxwin.h>
#include <iostream>
#include <string.h>
#include "psapi.h"
unsigned int i;
using namespace std;
[Code] .....
In the existing code,fork has call parallel to create process.my job is to store all the process id into vector so that we can verify the status of the jobs. I was able to save all the jobs but as the callback happen so I have lost my all value which was store into vector.
How can i maintain variable between multiple process.
what is the process of student profiling system using c++?
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