Regarding Header file

Hello
     I am developing the software related to the Ethernet for vc707 board but i am getting difficulty to select the header file,
     I got some demo code but confuse how they came to know about a particular header file is required for this, I have never
     seen before these kind of library so please help me so i can choose the proper header file for the further development.
Thanks & Regards
      Antriksh

I had the same exception occur in my JNI code and I have some advice on things to look for.
Symptoms: The C++ code runs fine when called in an native executable but when it is wrapped by a JNI call inside a DLL you get the following exception:
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_STACK_OVERFLOW occurred at PC=0x100d72e5
Function name=_chkstk
The address will be different of course.
In my tests I isolated the problem to an allocation of a char array like so at the top of one of my wrapped C++ methods:
char buf[650000];
As you see this code is requesting 650000 bytes of stack memory. When run in a native executable there was no problem but when I ran it wrapped in the JNI call it blew up.
Conclusion: There is a much smaller stack space when using JNI OR the added overhead of my JNI wrapper exhausted the available stack space OR this is a stack space issue related to DLLs.
Hope this helps. Anyone with insight on this please put in your 2 cents.

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Hi,
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[click]
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A hperlink for a header file in a c/c++ project

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How can I configure a c/c++ project, so that the #include directive will be
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A question about /usr/include/sys/select.h header file

good day! i hope i can get some help about this and i would be very grateful if my question will be answered. i have a question regarding the select.h header file that we include in our programs when we use the select(3C) function.
* Select uses bit masks of file descriptors in longs.
* These macros manipulate such bit fields.
* FD_SETSIZE may be defined by the user, but the
* default here should be >= NOFILE (param.h).
29 #ifndef FD_SETSIZE
30 #define FD_SETSIZE 1024
31 #endif
its says here in the header file that the value of FD_SETSIZE may be defined by the user and i need to know how. i've already tried declaring a constant at the beggining of the program but it didn't work...
example:
#undef FD_SETSIZE
#define FD_SETSIZE 2048
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AFAIK, the only way to change the FD_SETSIZE value is by building your own version of the libc.a and linking it statically to your executable. Not good at all IMHO.
The sources of Solaris 8 contain the implementation of select(3C) with both standard and 'large' (64K) FD_SETSIZE.
AFAIK, 64-bit version of the libc.so contains the 64K-descriptors version of the select(3C), so you may consider building your application with -xarch=v9 flag to get 64-bit application...
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A questions about /usr/include/sys/select.h header file

good day! i hope i can get some help about this and i would be very grateful if my question will be answered. i have a question regarding the select.h header file that we include in our programs when we use the select(3C) function.
* Select uses bit masks of file descriptors in longs.
* These macros manipulate such bit fields.
* FD_SETSIZE may be defined by the user, but the
* default here should be >= NOFILE (param.h).
29 #ifndef FD_SETSIZE
30 #define FD_SETSIZE 1024
31 #endif
its says here in the header file that the value of FD_SETSIZE may be defined by the user and i need to know how. i've already tried declaring a constant at the beggining of the program but it didn't work...
example:
#undef FD_SETSIZE
#define FD_SETSIZE 2048
the FD_SET macro generates an error if a value larger than 1024 is passed from in the first argument. i need to increase its value in order for me to wait for more than 1024 socket descriptors on select function. how can i increase or modify its value? thanks in advance...

AFAIK, the only way to change the FD_SETSIZE value is by building your own version of the libc.a and linking it statically to your executable. Not good at all IMHO.
The sources of Solaris 8 contain the implementation of select(3C) with both standard and 'large' (64K) FD_SETSIZE.
AFAIK, 64-bit version of the libc.so contains the 64K-descriptors version of the select(3C), so you may consider building your application with -xarch=v9 flag to get 64-bit application...
As for poll(2) - there is a manual page (man -s 2 poll) and some notes in the Answerbook. poll(2) is the actual system call that is used by select(3C), which is an interface function, so there is no functional difference between these two.
There is a potential problem with portability of your code if you are using poll(), but it looks like you have no choice... sorry about it...

Header file 'dlfcn.h' not found

Hi,
I am trying to compile some dynamic library stuff in my application. I am getting the error "header file 'dlfcn.h' not found". I searched for the file dlfcn.h in directory "/usr/include" and "/usr/local/include" but unable to find the file.
Please help me how to download this file?
Thanks

Hi header file........................etc
You could make your own.
Script is here;
http://www.koders.com/c/fid7E0BB9E61334ACD4F547A739488E20E0F68C502E.aspx
Just leave out the line numbers at the start of each line.
regards roam

VS2010: Why does my C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include does not get all the needed header files?

Hello,
I have installed VS2010 Professional. I have done a full install. The I install the 2010 redistributable and 2010 SP1. So I think I have installed all the needed products. But my include files has only 3 files :(. anmintrin.h, srv.h, wmiatlprov.h. My colleagues
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thanks
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Hi Ananda Vardhana,
What about your issue now?
If you have resolved it, you can share the solution here, which will be beneficial for other members with the same issue.
If you did not, whether you can provide us more information as Barry said for resolving this issue?
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We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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Java package and c++ header files

What is the difference between importing java package and including header files in c++?

I do not know .. have been away from C/C++ for a long time...
As much as I remember you can only import one header file each time... also when you import a header file you can just call methods from the header file automatically ...
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Shared library: function is not found and recognized in header file

Hello,
I am trying to use Java methods into LV. I am doing so by creating Java Invocation Interface, usind which I can call Java methods into C++ and then create a shared library that can be called into LV.
When I am importing my shared library into Labview, I am getting the following error messages:
The shared library contains 3 function(s). But no function is found and recognized in the header file. The following function(s) cannot be wrapped. If you want to import these functions, please review the warning messages next to the functions below. You will need to fix the problems before you can continue with the wizard.
jclass invokeJavaClass(JNIEnv* jenv, string className);
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The following header file was not found in the specified header file or one of the referenced header files:
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Attachments:
SharedLibError.png ‏51 KB

Hello Vivek,
The LabVIEW dll that I am trying to import does not include any third-party device..all my code is fully based on LabVIEW. Maybe this helps you to guess what is happening: once I've parsed the dll' header appears an error
like this one:
void
__cdecl Zdmt(LVBoolean *stop, double P, char channelName[],
    TD1
*errorIn, TD14 *FFTOptions, TD12 *Calibration, char FileName[],
int32_t minRecordLength, TD26 *InstrumentHandler, LVRefNum
sessionRefArray[],
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*averagingDone,
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*ColeColeCluster,
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*InstrumentHandleOutputCluster, LVRefNum *queueOut,
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*Acquired, TD6 *FreqTimeInfoCluster, double *averagesCompleted,
int32_t len);
The following symbols are not defined:
LVBoolean;
int32_t; LVRefNum;
Undefined symbols can prevent the wizard
from recognizing functions and parameters. To correct this problem,
check the header file to determine if you must add predefined symbols.
Click the Back button to return to the previous page of the wizard to
add a preprocessor definitionsl (for example, "NIAPI_stdcall =
__stdcall" or "NIAPIDefined = 1").
The following header file was
not found in the specified header file or one of the referenced header
files:
- extcode.h
To fix, click the Back button to go to the
previous page and add the header file path to the Include Paths list.
I have replaced the first line #include "extcode.h" of
the dll header file for #include "C:\Program Files\National
Instruments\LabVIEW 8.6\cintools\extcode.h" that is the full path where
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- MacTypes.h
As far as I know, Mactypes.h contains basic mac os data types and it doesn't have any relation with stdint.h...
I have created both of them and stored into the same folder as extcode.h, but then other libraries are missed!!!
Do you know if it would be possible to create the .dll generating all the header files associated for its data structures???
And if this is not factible, then what do you suggest me? because I hope to not having to create all the header files until it stops giving me an error!
thanks for four time,
ben

Heade files in sun studio 12

Hello,
I have Sun Studio Express - February 2007 Early Access Release.
I intend to use it only in "C" projects.
I had tried to create a "C" project successfully.
When I generate a "C" header , named for example list.h, it is created thus:
#ifndef listH
#define     listH
#ifdef     __cplusplus
extern "C" {
#endif
#ifdef     __cplusplus
#endif
#endif     /* listH */
I want to get rid of the "#ifdef     __cplusplus" so next time I will
create a "C" header file it will not be created. How do I achieve this ?
Regards,
Ian

Hi,
This is not the time which bothers me.
This is simply reduant since I am NOT working in c++, and I wish to get rid
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The question is: how can I get rid of this lines in the template ?
or is this somehow hard coded ?
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Ian

Where can i find the User32.dll header files?

Hi
Is there any way to get the header file and library file of User32.dll or If I want to use a function from a User32.dll where can i get the parameters and arguments for that function which is required to call.
Thanks & Regards
Samuel J
System Engineer
Captronic Systems
[email protected]
Solved!
Go to Solution.

Hi,
In general you don't need "user32.h" because the functions are declared in Winuser.h (you should include Windows.h).
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regards,
Andrey.

Header file for GUI in CVI

Hi
        I have created the GUI by adding different controls. When I make some changes in that
xxx.uir file and save it, it automatically do the changes in xxx.h file.
But If want to #define the values for all the controls, how to do that.
For eg :
Autogenerated xxx.h file has
#define PANEL                                          1
#define PANEL_CHECKBOX_1                   2
#define PANEL_CHECKBOX_5                 3
#define PANEL_LED_1                              4
#define PANEL_CHECKBOX_2                  5
#define PANEL_CHECKBOX_3                 6
#define PANEL_LED_2                             7
#define PANEL_CHECKBOX_4                8
But I want to edit it like
#define PANEL                                          1
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#define PANEL_CHECKBOX_3                   4
#define PANEL_CHECKBOX_4                   5
#define PANEL_CHECKBOX_5                   6
#define PANEL_LED_2                               11
#define PANEL_LED_1                              12
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Please any one help me on this
Regards
NB
Solved!
Go to Solution.

Hi Nagraj,
The autogenerated gui header files should not be edited directly.
CVI assigns control IDs according to their tab order in the UIR panel.
To modify the tab order, activate the panel you want to edit and press Ctrl + T.
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After you save the file, the header gets refreshed with the new control IDs.
Hope this helps,
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e.g:
int i;
int ctrlArr[5] = {PANEL_RUN_BUTTON, PANEL_LED, PANEL_RING, PANEL_TABLE, PANEL_STOP_BUTTON};
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// good
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// bad
// SetCtrlAttribute (panel, i, ATTR_DIMMED, 0);
S. Eren BALCI
www.aselsan.com.tr

In which header file does BOOL type defined

All,
Can anyone tell in which system header file does 'BOOL' type got #define'd or typedef'ed.
Because i get the following error, while doing a make.
parse error before 'BOOL'.
Regards,
venkat

Hi There,
The C language is case sensitive,
so if you are looking for the definition, you need to use lowercase bool or uppercase BOOLEAN
type.
The best way to search is
cd /usr/include or /usr/include/sys
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the standard header files.
eg. grep BOOL /usr/include/*.h
If you use grep -i BOOL /usr/include/*.h,
this will ignore the case and prints everything that
it finds that matches BOOL.
...jagruti
Developers Technical Support
Sun Microsystems, http://www.sun.com/developers/support

Missing header file 'stdtst.h'

Hi all ,
where will i find header file 'stdtst.h' in CVI or TestStand ?
Thanks
Mukesh Kumar

Hello mukesh121,
According to http://www.ni.com/pdf/manuals/375070c.pdf, the header file is located in <TestStand Public>\AdapterSupport\CVI.
Best regards,
= Nelu F. || National Instruments.

Regarding Header file

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