nexmon – Rev 1

?pathlinks?

Blame – Last modification – View Log – Download

/*
 * 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_private.h>
#include <isl/vec.h>
#include <isl/options.h>

void isl_handle_error(isl_ctx *ctx, enum isl_error error, const char *msg,
        const char *file, int line)
{
        isl_ctx_set_error(ctx, error);

        switch (isl_options_get_on_error(ctx)) {
        case ISL_ON_ERROR_WARN:
                fprintf(stderr, "%s:%d: %s\n", file, line, msg);
                return;
        case ISL_ON_ERROR_CONTINUE:
                return;
        case ISL_ON_ERROR_ABORT:
                fprintf(stderr, "%s:%d: %s\n", file, line, msg);
                abort();
                return;
        }
}

static struct isl_options *find_nested_options(struct isl_args *args,
        void *opt, struct isl_args *wanted)
{
        int i;
        struct isl_options *options;

        if (args == wanted)
                return opt;

        for (i = 0; args->args[i].type != isl_arg_end; ++i) {
                if (args->args[i].type != isl_arg_child)
                        continue;
                options = find_nested_options(args->args[i].u.child.child,
                            *(void **)(((char *)opt) + args->args[i].offset),
                            wanted);
                if (options)
                        return options;
        }

        return NULL;
}

static struct isl_options *find_nested_isl_options(struct isl_args *args,
        void *opt)
{
        return find_nested_options(args, opt, &isl_options_args);
}

void *isl_ctx_peek_options(isl_ctx *ctx, struct isl_args *args)
{
        if (!ctx)
                return NULL;
        if (args == &isl_options_args)
                return ctx->opt;
        return find_nested_options(ctx->user_args, ctx->user_opt, args);
}

isl_ctx *isl_ctx_alloc_with_options(struct isl_args *args, 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(args, 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->id_table, 0))
                goto error;

        ctx->stats = isl_calloc_type(ctx, struct isl_stats);
        if (!ctx->stats)
                goto error;

        ctx->user_args = args;
        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->two);
        isl_int_set_si(ctx->two, 2);

        isl_int_init(ctx->negone);
        isl_int_set_si(ctx->negone, -1);

        isl_int_init(ctx->normalize_gcd);

        ctx->n_cached = 0;
        ctx->n_miss = 0;

        ctx->error = isl_error_none;

        return ctx;
error:
        isl_args_free(args, 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_args, 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;
        if (ctx->ref != 0)
                isl_die(ctx, isl_error_invalid,
                        "isl_ctx freed, but some objects still reference it",
                        return);

        isl_hash_table_clear(&ctx->id_table);
        isl_blk_clear_cache(ctx);
        isl_int_clear(ctx->zero);
        isl_int_clear(ctx->one);
        isl_int_clear(ctx->two);
        isl_int_clear(ctx->negone);
        isl_int_clear(ctx->normalize_gcd);
        isl_args_free(ctx->user_args, 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;
}

enum isl_error isl_ctx_last_error(isl_ctx *ctx)
{
        return ctx->error;
}

void isl_ctx_reset_error(isl_ctx *ctx)
{
        ctx->error = isl_error_none;
}

void isl_ctx_set_error(isl_ctx *ctx, enum isl_error error)
{
        if (ctx)
                ctx->error = error;
}

void isl_ctx_abort(isl_ctx *ctx)
{
        if (ctx)
                ctx->abort = 1;
}

void isl_ctx_resume(isl_ctx *ctx)
{
        if (ctx)
                ctx->abort = 0;
}

int isl_ctx_aborted(isl_ctx *ctx)
{
        return ctx ? ctx->abort : -1;
}

int isl_ctx_parse_options(isl_ctx *ctx, int argc, char **argv, unsigned flags)
{
        if (!ctx)
                return -1;
        return isl_args_parse(ctx->user_args, argc, argv, ctx->user_opt, flags);
}