al_alloc.c File Reference

ArrayLib allocation routine. More...

#include "al_hidden.h"

Include dependency graph for al_alloc.c:

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Functions
void *	AL_Allocate_array (int sz_ptr)

Variables
SZ *	sz_stack [AL_MAX_ARRAYS]
int	stack_ptr [AL_MAX_ARRAYS]

Detailed Description

ArrayLib allocation routine.

ArrayLib allocation routine

Authors

A. Malagoli (University of Chicago)

Date

Jul 17, 1999

Definition in file al_alloc.c.

Function Documentation

void* AL_Allocate_array

(

int

sz_ptr

)

Allocate the local buffer for a distributed array

Parameters

[in]

sz_ptr

pointer to SZ array (integer)

Definition at line 25 of file al_alloc.c.

{
  char *a;
  int myrank, nproc;
  int size;
  long int buffsize;
  MPI_Comm comm;
  SZ *s;



  /* DIAGNOSTICS
    Check that sz_ptr points to an allocated SZ
  */
  if( stack_ptr[sz_ptr] == AL_STACK_FREE){
    printf("AL_Allocate_array: wrong SZ pointer\n");
  }

  s = sz_stack[sz_ptr];

  myrank = s->rank;
  nproc  = s->size;
  comm   = s->comm;

  buffsize = s->buffsize;

  MPI_Type_size(s->type, &size);

  if( !(a = (char *)AL_CALLOC_((int) buffsize,size)) ){
    printf("[%d] AL_Allocate_array: allocation error\n",myrank);
    return 0;
  }

  /* DIAGNOSTICS */
#ifdef DEBUG
    printf("AL_Allocate_array: allocated %ld bytes\n",buffsize*size);
#endif

  return (void *)a;
}

Variable Documentation

int stack_ptr[AL_MAX_ARRAYS]

Definition at line 26 of file al_szptr_.c.

SZ* sz_stack[AL_MAX_ARRAYS]

Definition at line 18 of file al_szptr_.c.