memory.c

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// SPDX-License-Identifier: LGPL-3.0-only
 
#include "memory/memory.h"
 
#include "arena/arena.h"
#include "base/panic.h"
 
#include <gmp.h>
 
 
static arena_t *gGlobalArena = NULL;
 
arena_t *get_global_arena(void)
{
    return gGlobalArena;
}
 
void init_global_arena(arena_t *arena)
{
    CTASSERT(arena != NULL);
 
    gGlobalArena = arena;
}
 
 
static arena_t *gGmpArena = NULL;
 
static void *ctu_gmp_malloc(size_t size)
{
    return ARENA_MALLOC(size, "gmp", gGmpArena, gGmpArena);
}
 
static void *ctu_gmp_realloc(void *ptr, size_t old_size, size_t new_size)
{
    // mini-gmp gives us zero in some cases (-1 + 1) causes this
    size_t old = old_size != 0 ? old_size : CT_ALLOC_SIZE_UNKNOWN;
    return arena_realloc(ptr, new_size, old, gGmpArena);
}
 
static void ctu_gmp_free(void *ptr, size_t size)
{
    // mini-gmp doesnt handle free size and always gives us zero
    size_t old = size != 0 ? size : CT_ALLOC_SIZE_UNKNOWN;
    arena_free(ptr, old, gGmpArena);
}
 
STA_DECL
void init_gmp_arena(arena_t *arena)
{
    CTASSERT(arena != NULL);
 
    gGmpArena = arena;
    mp_set_memory_functions(ctu_gmp_malloc, ctu_gmp_realloc, ctu_gmp_free);
}