scratch.h

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/***********************************************************************
 * Copyright (c) 2017 Andrew Poelstra                                  *
 * Distributed under the MIT software license, see the accompanying    *
 * file COPYING or https://www.opensource.org/licenses/mit-license.php.*
 ***********************************************************************/
 
#ifndef SECP256K1_SCRATCH_H
#define SECP256K1_SCRATCH_H
 
/* The typedef is used internally; the struct name is used in the public API
 * (where it is exposed as a different typedef) */
typedef struct secp256k1_scratch_space_struct {
    unsigned char magic[8];
    void *data;
    size_t alloc_size;
    size_t max_size;
} secp256k1_scratch;
 
typedef struct secp256k1_scratch_space_struct secp256k1_scratch_space;
 
static secp256k1_scratch* secp256k1_scratch_create(const secp256k1_callback* error_callback, size_t max_size);
 
static void secp256k1_scratch_destroy(const secp256k1_callback* error_callback, secp256k1_scratch* scratch);

static size_t secp256k1_scratch_checkpoint(const secp256k1_callback* error_callback, const secp256k1_scratch* scratch);

static void secp256k1_scratch_apply_checkpoint(const secp256k1_callback* error_callback, secp256k1_scratch* scratch, size_t checkpoint);

static size_t secp256k1_scratch_max_allocation(const secp256k1_callback* error_callback, const secp256k1_scratch* scratch, size_t n_objects);

static void *secp256k1_scratch_alloc(const secp256k1_callback* error_callback, secp256k1_scratch* scratch, size_t n);
 
#endif