#include <windows.h>
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <iostream.h>
#include <string.h>
void Thread1( LPVOID param)
{
int a;
a = *((int *)param);
for (int i= 0; i <10; i++)
printf("%d\n", a);
}
int main()
{
int a =4;
int ThreadId;
CreateThread( 0, 0x0100, Thread1, &a, 0, &ThreadId);
for( int i = 0; i <11; i++)
Sleep( 1);
return( 1);
}
This is a simple code but I am not able to figure it out why visual studio is giving me error:
error C2664: 'CreateThread' : cannot convert parameter 3 from 'void (void *)' to 'unsigned long (__stdcall *)(void *)'
None of the functions with this name in scope match the target type
Error executing cl.exe.
define as following
DWORD WINAPI MyThreadProc(LPVOID lpParameter)
CreateThread() require __stdcall calling convention.
Related
I am getting the following error even though it seems there are no syntax errors.
usb_libusb10.h(72): error C2146: syntax error : missing ';' before identifier 'cb'
The line where the error is generating is given below-
fnusb_iso_cb cb;
I also tried to highlighted this line by using "**" in the code.
Following is the code I am using.
#pragma once
#include <Windows.h>
#include <afxwin.h>
#include "libfreenect.h"
#include <libusb.h>
// There are a few rules: PKTS_PER_XFER * NUM_XFERS <= 1000, PKTS_PER_XFER % 8 == 0.
#if defined(__APPLE__)
#define DEPTH_PKTBUF 2048
#define VIDEO_PKTBUF 2048
#define PKTS_PER_XFER 128
#define NUM_XFERS 4
#else
#define DEPTH_PKTBUF 1920
#define VIDEO_PKTBUF 1920
#if defined(_WIN32)
#define PKTS_PER_XFER 32
#define NUM_XFERS 8
#else
#define PKTS_PER_XFER 16
#define NUM_XFERS 16
#endif
#endif
typedef struct {
libusb_context *ctx;
int should_free_ctx;
} fnusb_ctx;
typedef struct {
freenect_device *parent; //so we can go up from the libusb userdata
libusb_device_handle *dev;
int device_dead; // set to 1 when the underlying libusb_device_handle vanishes (ie, Kinect was unplugged)
int VID;
int PID;
} fnusb_dev;
typedef struct {
fnusb_dev *parent; //so we can go up from the libusb userdata
struct libusb_transfer **xfers;
uint8_t *buffer;
**fnusb_iso_cb cb;**
int num_xfers;
int pkts;
int len;
int dead;
int dead_xfers;
} fnusb_isoc_stream;
int fnusb_num_devices(fnusb_ctx *ctx);
int fnusb_list_device_attributes(fnusb_ctx *ctx, struct freenect_device_attributes** attribute_list);
int fnusb_init(fnusb_ctx *ctx, freenect_usb_context *usb_ctx);
int fnusb_shutdown(fnusb_ctx *ctx);
int fnusb_process_events(fnusb_ctx *ctx);
int fnusb_process_events_timeout(fnusb_ctx *ctx, struct timeval* timeout);
int fnusb_open_subdevices(freenect_device *dev, int index);
int fnusb_close_subdevices(freenect_device *dev);
int fnusb_start_iso(fnusb_dev *dev, fnusb_isoc_stream *strm, fnusb_iso_cb cb, unsigned char endpoint, int xfers, int pkts, int len);
int fnusb_stop_iso(fnusb_dev *dev, fnusb_isoc_stream *strm);
int fnusb_get_max_iso_packet_size(fnusb_dev *dev, unsigned char endpoint, int default_size);
int fnusb_control(fnusb_dev *dev, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint8_t *data, uint16_t wLength);
int fnusb_bulk(fnusb_dev *dev, uint8_t endpoint, uint8_t *data, int len, int *transferred);
int fnusb_num_interfaces(fnusb_dev *dev);
I have a CUDA C code, when I try to compile it, nvcc gives me an error with an undefined identifier error: identifier "cudamalloc" is undefined, identifier "cudamemcpy" is undefined.
I'm running Windows 7 with Visual Studio 10 and CUDA Toolkit 4.0
I have installed Cuda on drive "C" and Visual Studio on drive "E" but im not sure that it is the problem.
I use this command to compile:
nvcc -o ej1b ej1b.cu
and this is my program:
#include <cuda.h>
#include <cstdio>
#include <cuda_runtime_api.h>
#include <device_functions.h>
#include "device_launch_parameters.h"
#include <stdio.h>
#include <stdlib.h>
const int N = 512;
const int C = 5;
void init_CPU_array(int vec[],const int N){
unsigned int i;
for(i = 0; i < N; i++) {
vec[i] = i;
}
}
__global__ void kernel(int vec[],const int N, const int C){
int id = blockIdx.x * blockDim.x + threadIdx.x;
if(id<N)
vec[id] = vec[id] * C;
}
int main(){
int vec[N];
int vecRES[N];
int *vecGPU;
unsigned int cantaloc=N*sizeof(int);
init_CPU_array(vec,N);
cudamalloc((void**)&vecGPU,cantaloc);
cudamemcpy(vecGPU,vec,cantaloc,cudaMemcpyHostToDevice);
dim3 dimBlock(64);
dim3 dimGrid((N + dimBlock.x - 1) / dimBlock.x);
printf("-> Variable dimBlock.x = %d\n",dimBlock.x);
kernel<<<dimGrid, dimBlock>>>(vecGPU, N, C);
cudaThreadSynchronize();
cudamemcpy(vecRES,vecGPU,cantaloc,cudaMemcpyDeviceToHost);
cudaFree(vecGPU);
printf("%s \n","-> Resultados");
int i;
for(i=0;i<10;i++){
printf("%d ",vecRES[i]);
printf("%d \n",vec[i]);
}
return 0;
I used all those #include because I don't know where the problem is.
If you read the documentation, you will find the API calls are cudaMalloc and cudaMemcpy. C and C++ are case sensitive languages and you have the names incorrect.
good afternoon.
I got the code below on a book. I'm trying to execute it, but I don't know what is the "first" and "last" parameters on the MakeCodeWritable function, or where I can find them. Someone can help? This code is about C obfuscation method. I'm using Xcode program and LLVM GCC 4.2 compiler.
#include <stdio.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
typedef unsigned int uint32;
typedef char* caddr_t;
typedef uint32* waddr_t;
#define Tam_celula 64
#define ALIGN __attribute__((aligned(Tam_celula)))
void makeCodeWritable(char* first, char* last) {
char* firstpage = first - ((int)first % getpagesize());
char* lastpage = last - ((int)last % getpagesize());
int pages = (lastpage-firstpage)/getpagesize()+1;
if (mprotect(firstpage,pages*getpagesize(), PROT_READ|PROT_EXEC|PROT_WRITE)==-1) perror("mprotect");
}
void xor(caddr_t from, caddr_t to, int len){
int i;
for(i=0;i<len;i++){
*to ^= *from; from++; to++;
} }
void swap(caddr_t from, caddr_t to, int len){
int i;
for(i=0;i<len;i++){
char t = *from; *from = *to; *to = t; from++; to++;
} }
#define CELLSIZE 64
#define ALIGN asm volatile (".align 64\n");
void P() {
static int firsttime=1; if (firsttime) {
xor(&&cell5,&&cell2,CELLSIZE);
xor(&&cell0,&&cell3,CELLSIZE);
swap(&&cell1,&&cell4,CELLSIZE);
firsttime = 0; }
char* a[] = {&&align0,&&align1,&&align2,&&align3,&&align4,&&align5};
char*next[] ={&&cell0,&&cell1,&&cell2,&&cell3, &&cell4,&&cell5};
goto *next[0];
align0: ALIGN
cell0: printf("SPGM0\n");
xor(&&cell0,&&cell3,3*CELLSIZE);
goto *next[3];
align1: ALIGN
cell1: printf("SPGM2\n"); xor(&&cell0,&&cell3,3*CELLSIZE);
goto *next[4];
align2: ALIGN
cell2: printf("SPGM4\n"); xor(&&cell0,&&cell3,3*CELLSIZE);
goto *next[5];
align3: ALIGN
cell3: printf("SPGM1\n"); xor(&&cell3,&&cell0,3*CELLSIZE);
goto *next[1];
align4: ALIGN
cell4: printf("SPGM3\n"); xor(&&cell3,&&cell0,3*CELLSIZE);
goto *next[2];
align5: ALIGN
cell5: printf("SPGM5\n");
xor(&&cell3,&&cell0,3*CELLSIZE);
}
int main (int argc, char *argv[]) {
makeCodeWritable(...);
P(); P();
}
The first argument should be (char *)P, because it looks like you want to modify code inside function P. The second argument is the ending address of function P. You can first compile the code, and using objdump -d to see the address of beginning and end of P, then calculate the size of the function, SIZE, then manually specify in the makeCodeWritable( (char *)P, ((char *)P) + SIZE.
The second way is utilizing the as to get the size of function P, but it depends on the assembler language on your platform. This is code snipe I modified from your code, it should be able to compile and run in x86, x86_64 in GCC 4.x on Linux platform.
align5: ALIGN
cell5: printf("SPGM5\n");
xor(&&cell3,&&cell0,3*CELLSIZE);
// adding an label to the end of function P to assembly code
asm ("END_P: \n");
;
}
extern char __sizeof__myfunc[];
int main (int argc, char *argv[]) {
// calculate the code size, ending - starting address of P
asm (" __sizeof__myfunc = END_P-P \n");
// you can see the code size of P
printf("code size is %d\n", (unsigned)__sizeof__myfunc);
makeCodeWritable( (char*)P, ((char *)P) + (unsigned)__sizeof__myfunc);
P(); P();
}
With some modification to support LLVM GCC and as in Mac OS X
int main (int argc, char *argv[]) {
size_t sizeof__myfunc = 0;
asm volatile ("movq $(_END_P - _P),%0;"
: "=r" (sizeof__myfunc)
: );
printf("%d\n", sizeof__myfunc);
hello I am getting this error when using cygwin to try to make,
this is my makefile
flags=-g
all: icmptx
icmptx: it.o icmptx.o tun_dev.o
gcc $(flags) -o icmptx icmptx.o it.o tun_dev.o
it.o: it.c
gcc $(flags) -c it.c
icmptx.o: icmptx.c
gcc $(flags) -c icmptx.c
tun_dev.o: tun_dev.c
gcc $(flags) -c tun_dev.c
clean:
rm -f tun_dev.o it.o icmptx.o icmptx
the error is
$ make
gcc -g -c tun_dev.c
tun_dev.c:35:22: fatal error: linux/if.h: No such file or directory
compilation terminated.
Makefile:15: recipe for target `tun_dev.o' failed
make: *** [tun_dev.o] Error 1
here is my tun_dev.c file
/*
*/
/*
* tun_dev.c,v 1.1.2.4 2001/09/13 05:02:22 maxk Exp
*/
/* #include "config.h" */
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/if.h>
#include "vtun.h"
#include "lib.h"
/*
* Allocate TUN device, returns opened fd.
* Stores dev name in the first arg(must be large enough).
*/
int tun_open_old(char *dev)
{
char tunname[14];
int i, fd;
if( *dev ) {
sprintf(tunname, "/dev/%s", dev);
return open(tunname, O_RDWR);
}
for(i=0; i < 255; i++){
sprintf(tunname, "/dev/tun%d", i);
/* Open device */
if( (fd=open(tunname, O_RDWR)) > 0 ){
sprintf(dev, "tun%d", i);
return fd;
}
}
return -1;
}
#include <linux/if_tun.h>
/* pre 2.4.6 compatibility */
#define OTUNSETNOCSUM (('T'<< 8) | 200)
#define OTUNSETDEBUG (('T'<< 8) | 201)
#define OTUNSETIFF (('T'<< 8) | 202)
#define OTUNSETPERSIST (('T'<< 8) | 203)
#define OTUNSETOWNER (('T'<< 8) | 204)
int tun_open(char *dev)
{
struct ifreq ifr;
int fd;
if ((fd = open("/dev/net/tun", O_RDWR)) < 0)
return tun_open_old(dev);
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
if (*dev)
strncpy(ifr.ifr_name, dev, IFNAMSIZ);
if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0) {
if (errno == EBADFD) {
/* Try old ioctl */
if (ioctl(fd, OTUNSETIFF, (void *) &ifr) < 0)
goto failed;
} else
goto failed;
}
strcpy(dev, ifr.ifr_name);
return fd;
failed:
close(fd);
return -1;
}
int tun_close(int fd, char *dev)
{
return close(fd);
}
/* Read/write frames from TUN device */
int tun_write(int fd, char *buf, int len)
{
return write(fd, buf, len);
}
int tun_read(int fd, char *buf, int len)
{
return read(fd, buf, len);
}
any idea, google shows nothing
Try:
#include <net/if.h>
instead.
I want to get adapter index by its name, after couple days of searching I found GetAdapterIndex() function:
#include <winsock2.h>
#include <iphlpapi.h>
#include <stdio.h>
#include <iostream>
#include <stdlib.h>
#pragma comment(lib, "IPHLPAPI.lib")
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
int main()
{
DWORD res;
DWORD rs;
ULONG IfIndex;
LPWSTR AdapterName;
int i = 0;
res = GetAdapterIndex(L"AMD PCNET Family PCI Ethernet Adapter - Packet Scheduler Miniport", &IfIndex);
if(res == NO_ERROR)
printf("Adapter Index: %ld\n", IfIndex);
res = GetNumberOfInterfaces(&rs);
if(res == NO_ERROR)
printf("Number of Adapters: %ld\n", rs);
return 0;
}
First: it doesn't return an index for the specific adapter name I chose.
Second: It returns that I have two adapters, even I have just only one.
You can print the names and descriptions of network interfaces using GetIfEntry, with indices ranging from 1 to the value returned by GetNumberOfInterfaces. All the names are of the form \DEVICE\TCPIP_{846EE342-7039-11DE-9D20-806E6F6E6963} which explains why you aren't finding your interface using the nice name.