I'm having a problem with a macro i put in my .exrc file.
Here's what I put: map #I ^[
^ [ is control-v and the escape key.
It places a # a the beginning of a line by simply hitting the # on the keyboard. Problem is, now when I hit "o" or "O" to move up or down a line, it places a # at... (1 Reply)
I'm upleveling code from 10.20 to 11.11....but I'm running into a problem in which the USRSTACK macro does not seem to be defined in 11.11. Has anybody else experienced this/fixed it/worked around it? Is there a different macro I should be using instead?
Thanks for any info you can provide!! (1 Reply)
Hi,
In my application I have some number c files. In each of the file the following line will be the first statement.
#ident "@(#) set.c 14.1.2.2 05/15/01 17:06:32"
I would like to know what is the use of the above statement.
Thanks
Sarwan (1 Reply)
I think there is no problem to use any macro in a new macro definishion, but I have a problem with that.
I can not understand why?
I have a *.mak file that inludes file with many definitions and rules.
##############################################
include dstndflt.mak
...
One of the... (2 Replies)
Hi Experts,
i would like to get your help to do some development to the below linux commands which i run under .cmd file in windows
@echo off
call f:\linuxutils\grep.exe "T11" f:\blocked_ranges\dump3.txt|f:\linuxutils\grep.exe ",9647800"|f:\linuxutils\grep.exe... (3 Replies)
Hi,
I just opened one old RH box and found number of "macros" in there, that how they called in how-to doc, let say you type <rx> and this does a lot of stuff.
I can't figure out how it work, how I can edit/display these macros? Can anybody point to the right directions? I have some academic... (3 Replies)
Hi everyone,
What I am trying to do is assign a F-key a macro to save a file in vi and display said file in firefox. The details are as follows:
I am using a Win 7 laptop with and ssh program to log into a unix system.
What I am trying to do is figure out how to bring up the firefox... (1 Reply)
Hey guys, thanks for lookin....my question is I want to create a macro on HPUX to SFTP a .xls to my Windows Server....I have exstensively searched and all I can find is What a macro is not how to create one.
Reasoning for having a macro is to put it in a file creation script and have it run at... (7 Replies)
Can some body explain this part in a header file for me?
#include <limits.h>
#define BIGNUM unsigned long long
typedef BIGNUM (*hash_t) (char *str);
......I have hard time for the second part:
typedef BIGNUM (*hash_t) (char *str); First, I could not find the definition of hash_t, which... (1 Reply)
Discussion started by: yifangt
1 Replies
LEARN ABOUT MOJAVE
ffi_prep_closure
ffi_prep_closure(3) BSD Library Functions Manual ffi_prep_closure(3)NAME
ffi_prep_closure -- Prepare a ffi_closure for execution.
SYNOPSIS
#include <ffi/ffi.h>
ffi_status
ffi_prep_closure(ffi_closure *closure, ffi_cif *cif, void (*fun)(ffi_cif*,void*,void**,void*), void *user_data);
DESCRIPTION
closure is prepared to execute fun. cif contains information describing the data types, sizes and alignments of the arguments to and return
value from the function that will be called from fun, and must be initialized with ffi_prep_cif before it is used with ffi_prep_closure.
user_data may point to additional data to be used in fun. If no additional data is needed, user_data may be NULL. When closure is invoked,
fun is called with cif, an array of pointers to arguments, a pointer to a return value, and user_data.
Some architectures do not allow the execution of data by default. In such cases, it is necessary to manually alter the permissions of the
page that contains closure prior to its execution.
RETURN VALUES
Upon successful completion, ffi_prep_closure returns FFI_OK. If the ABI specified in cif does not refer to a valid ABI, FFI_BAD_ABI will be
returned. Available ABIs are defined in <ffi/ppc-ffitarget.h> and <ffi/x86-ffitarget.h>.
EXAMPLES
#define MACOSX // for fficonfig.h on Darwin
#include <ffi/ffi.h>
#include <sys/mman.h> // for mmap()
unsigned char
foo(unsigned int, float);
static void
foo_closure(ffi_cif*, void*, void**, void*);
int
main(int argc, const char **argv)
{
ffi_cif cif;
ffi_closure *closure;
ffi_type *arg_types[2];
ffi_arg result;
ffi_status status;
// Specify the data type of each argument. Available types are defined
// in <ffi/ffi.h>.
arg_types[0] = &ffi_type_uint;
arg_types[1] = &ffi_type_float;
// Allocate a page to hold the closure with read and write permissions.
if ((closure = mmap(NULL, sizeof(ffi_closure), PROT_READ | PROT_WRITE,
MAP_ANON | MAP_PRIVATE, -1, 0)) == (void*)-1)
{
// Check errno and handle the error.
}
// Prepare the ffi_cif structure.
if ((status = ffi_prep_cif(&cif, FFI_DEFAULT_ABI,
2, &ffi_type_uint8, arg_types)) != FFI_OK)
{
// Handle the ffi_status error.
}
// Prepare the ffi_closure structure.
if ((status = ffi_prep_closure(closure, &cif, foo_closure, NULL)) != FFI_OK)
{
// Handle the ffi_status error.
}
// Ensure that the closure will execute on all architectures.
if (mprotect(closure, sizeof(closure), PROT_READ | PROT_EXEC) == -1)
{
// Check errno and handle the error.
}
// The closure is now ready to be executed, and can be saved for later
// execution if desired.
// Invoke the closure.
result = ((unsigned char(*)(float, unsigned int))closure)(42, 5.1);
// Free the memory associated with the closure.
if (munmap(closure, sizeof(closure)) == -1)
{
// Check errno and handle the error.
}
return 0;
}
// Invoking the closure transfers control to this function.
static void
foo_closure(ffi_cif* cif, void* result, void** args, void* userdata)
{
// Access the arguments to be sent to foo().
float arg1 = *(float*)args[0];
unsigned int arg2 = *(unsigned int*)args[1];
// Call foo() and save its return value.
unsigned char ret_val = foo(arg1, arg2);
// Copy the returned value into result. Because the return value of foo()
// is smaller than sizeof(long), typecast it to ffi_arg. Use ffi_sarg
// instead for signed types.
*(ffi_arg*)result = (ffi_arg)ret_val;
}
// The closed-over function.
unsigned char
foo(unsigned int x, float y)
{
unsigned char result = x - y;
return result;
}
SEE ALSO ffi(3), ffi_prep_cif(3), mmap(2), munmap(2), mprotect(2)Darwin July 20, 2007 Darwin