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View of /branches/vis12/src/include/Diderot/strands.h

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Revision 1714 - (download) (as text) (annotate)
Sat Mar 10 00:00:50 2012 UTC (7 years, 5 months ago) by jhr
File size: 2986 byte(s)
  Working on library generation
/*! \file strands.h
 *
 * \author John Reppy
 */

/*
 * COPYRIGHT (c) 2011 The Diderot Project (http://diderot-language.cs.uchicago.edu)
 * All rights reserved.
 */

#ifndef _DIDEROT_STRANDS_H_
#define _DIDEROT_STRANDS_H_

#ifndef _DIDEROT_TYPES_H_
#  include "Diderot/types.h"
#endif
#ifndef _DIDEROT_WORLD_H_
#  include "Diderot/world.h"
#endif

typedef StrandStatus_t (*update_method_t)(void *inSt, void *outSt);
typedef void (*stabilize_method_t)(void *inSt, void *outSt);
typedef void (*convert_method_t)(void *st, void *); 
typedef void (*output_method_t)(void *st, int i, void *dst);	// copy i'th output 

typedef enum {
    nrrdTypeLength = nrrdTypeLast+1	//!< nrrd typecode for dynamic sequence lengths
};

/* description of an output */
typedef struct {
    const char          *name;          //!< name of output variable
    int                 nrrdType;       //!< nrrd type code for elements
    int                 nDims;          //!< number of dimensions (order) of tensor/sequence types
    int                 *dims;          //!< array of dimension sizes in slowest to fastest; the
                                        //!< value -1 is used for a dynamically sized dimension,
					//!< which will always be the slowest dimension.
} OutputDesc_t;

/* hooks generated by the compiler for the runtime */
typedef struct struct_strand {
    char                *name;          //!< name of strand
    size_t              stateSzb;       //!< size of strand state in bytes
#if defined(DIDEROT_TARGET_CL)
    size_t              shadowStrandSzb; //!< shadow strand size
#endif
    int                 nOutputs;       //!< number of output variables
    OutputDesc_t        *outputs;       //!< array of output descriptions
    update_method_t     update;         //!< update method
    stabilize_method_t  stabilize;      //!< stabilize method
#if defined(DIDEROT_TARGET_CL)
    convert_method_t    strandCopy;     //!< method for copying 
#endif
    output_method_t     output;         //!< function for copying output state from the strand
					//!< state to the output nrrd
} Strand_t;

extern int Diderot_NumStrands;          //!< the number of strands in the program
extern Strand_t *Diderot_Strands[];     //!< array of NumStrands strand descriptors

extern void Diderot_InitGlobals ();

extern Diderot_World_t *Diderot_Initially ();
extern void Diderot_Shutdown (Diderot_World_t *wrld);

/* Diderot library functions */

// block allocation of an initial collection of strands
extern Diderot_World_t *Diderot_AllocInitially (
    const char *name,           // the name of the program
    Strand_t *strand,           // the type of strands being allocated
    bool isArray,               // is the initialization an array or collection?
    uint32_t nDims,             // depth of iteration nesting
    int32_t *base,              // nDims array of base indices
    uint32_t *size);            // nDims array of iteration sizes

#endif /* !_DIDEROT_STRANDS_H_ */

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