Hi,
I have a simple user-space program (see below) that tries to
create a heap. If the heap already exists, then the program tries
to delete it. I have no other threads binding to the heap.
I can create, but not delete the heap. The error returned is
-EPERM. According to the API manual, this means the call occurred
in an asynchronous context. What does this mean, exactly? How
should I delete this heap?
Any advice?
BTW, superb job on the documentation, it's made my learning curve
easy/straight-forward.
Thanks,
Nate
/*************************************************/
/*! @file
@brief
File shows how to allocate heap memory from user-space
*/
#include "native/heap.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
RT_HEAP heap;
const char hp_name[]="heap1";
size_t hp_size = 500000;
RT_HEAP_INFO hp_info;
/*Map error codes to human-readable strings*/
void xeno_error_lookup(const char* msg, int err);
int
main( void )
{
int err = 0;
err = rt_heap_create( &heap, hp_name, hp_size, H_SHARED);
if (err)
{
printf("Couldn't create the heap\n");
if (-EEXIST == err)
{
printf("Deleting heap....\n");
err = rt_heap_delete( &heap);
if (err)
{
xeno_error_lookup("Couldn't delete heap.", err);
}
}
exit(err);
}
return err;
}
void xeno_error_lookup(const char* msg, int err)
{
char* pc=0;
switch (err)
{
case -EINVAL:
pc = "EINVAL";
break;
case -EIDRM:
pc = "EIDRM";
break;
case -EPERM:
pc = "EPERM";
break;
}
printf("%s: %d => %s\n", msg, err, pc);
}
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