isl_map_simplify.c: compute_elimination_index: don't assume equalities are in order
[isl.git] / isl_ctx.c
blob9ee369fee0e58fb63483fdf61b2cbf99288f4297
1 #include "isl_ctx.h"
2 #include "isl_vec.h"
3 #ifdef ISL_POLYLIB
4 #include <polylib/polylibgmp.h>
5 #endif
7 struct isl_ctx *isl_ctx_alloc()
9 struct isl_ctx *ctx = NULL;
11 ctx = isl_alloc_type(NULL, struct isl_ctx);
12 if (!ctx)
13 goto error;
15 if (isl_hash_table_init(ctx, &ctx->name_hash, 0))
16 goto error;
18 ctx->ref = 0;
20 isl_int_init(ctx->one);
21 isl_int_set_si(ctx->one, 1);
23 isl_int_init(ctx->negone);
24 isl_int_set_si(ctx->negone, -1);
26 ctx->n_cached = 0;
28 #ifdef ISL_POLYLIB
29 ctx->MaxRays = POL_NO_DUAL | POL_INTEGER;
30 #endif
32 ctx->lp_solver = ISL_LP_TAB;
34 return ctx;
35 error:
36 free(ctx);
37 return NULL;
40 void isl_ctx_ref(struct isl_ctx *ctx)
42 ctx->ref++;
45 void isl_ctx_deref(struct isl_ctx *ctx)
47 isl_assert(ctx, ctx->ref > 0, return);
48 ctx->ref--;
51 void isl_ctx_free(struct isl_ctx *ctx)
53 if (!ctx)
54 return;
55 isl_assert(ctx, ctx->ref == 0, return);
56 isl_hash_table_clear(&ctx->name_hash);
57 isl_blk_clear_cache(ctx);
58 isl_int_clear(ctx->one);
59 isl_int_clear(ctx->negone);
60 free(ctx);