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/*
* Copyright 2008-2009 Katholieke Universiteit Leuven
*
* Use of this software is governed by the GNU LGPLv2.1 license
*
* Written by Sven Verdoolaege, K.U.Leuven, Departement
* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
*/
#include "isl_ctx.h"
#include "isl_vec.h"
static struct isl_options *find_nested_isl_options(struct isl_arg *arg,
void *opt)
{
int i;
struct isl_options *options;
if (arg == isl_options_arg)
return opt;
for (i = 0; arg[i].type != isl_arg_end; ++i) {
if (arg[i].type != isl_arg_child)
continue;
options = find_nested_isl_options(arg[i].u.child.child,
*(void **)(((char *)opt) + arg->offset));
if (options)
return options;
}
return NULL;
}
isl_ctx *isl_ctx_alloc_with_options(struct isl_arg *arg, void *user_opt)
{
struct isl_ctx *ctx = NULL;
struct isl_options *opt = NULL;
int opt_allocated = 0;
if (!user_opt)
return NULL;
opt = find_nested_isl_options(arg, user_opt);
if (!opt) {
opt = isl_options_new_with_defaults();
if (!opt)
goto error;
opt_allocated = 1;
}
ctx = isl_calloc_type(NULL, struct isl_ctx);
if (!ctx)
goto error;
if (isl_hash_table_init(ctx, &ctx->name_hash, 0))
goto error;
ctx->stats = isl_calloc_type(ctx, struct isl_stats);
if (!ctx->stats)
goto error;
ctx->user_arg = arg;
ctx->user_opt = user_opt;
ctx->opt_allocated = opt_allocated;
ctx->opt = opt;
ctx->ref = 0;
isl_int_init(ctx->zero);
isl_int_set_si(ctx->zero, 0);
isl_int_init(ctx->one);
isl_int_set_si(ctx->one, 1);
isl_int_init(ctx->negone);
isl_int_set_si(ctx->negone, -1);
isl_int_init(ctx->normalize_gcd);
ctx->n_cached = 0;
return ctx;
error:
isl_arg_free(arg, user_opt);
if (opt_allocated)
isl_options_free(opt);
free(ctx);
return NULL;
}
struct isl_ctx *isl_ctx_alloc()
{
struct isl_options *opt;
opt = isl_options_new_with_defaults();
return isl_ctx_alloc_with_options(isl_options_arg, opt);
}
void isl_ctx_ref(struct isl_ctx *ctx)
{
ctx->ref++;
}
void isl_ctx_deref(struct isl_ctx *ctx)
{
isl_assert(ctx, ctx->ref > 0, return);
ctx->ref--;
}
void isl_ctx_free(struct isl_ctx *ctx)
{
if (!ctx)
return;
isl_assert(ctx, ctx->ref == 0, return);
isl_hash_table_clear(&ctx->name_hash);
isl_blk_clear_cache(ctx);
isl_int_clear(ctx->zero);
isl_int_clear(ctx->one);
isl_int_clear(ctx->negone);
isl_int_clear(ctx->normalize_gcd);
isl_arg_free(ctx->user_arg, ctx->user_opt);
if (ctx->opt_allocated)
free(ctx->opt);
free(ctx->stats);
free(ctx);
}
struct isl_options *isl_ctx_options(isl_ctx *ctx)
{
if (!ctx)
return NULL;
return ctx->opt;
}
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