isl_convex_hull.c: introduce proto_hull based on obvious facet constraints
[isl.git] / isl_ctx.c
blob24f1455dfd9250e9446f0d59e447c0027a499cfa
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 ctx->n_cached = 0;
25 #ifdef ISL_POLYLIB
26 ctx->MaxRays = POL_NO_DUAL | POL_INTEGER;
27 #endif
29 return ctx;
30 error:
31 free(ctx);
32 return NULL;
35 void isl_ctx_ref(struct isl_ctx *ctx)
37 ctx->ref++;
40 void isl_ctx_deref(struct isl_ctx *ctx)
42 isl_assert(ctx, ctx->ref > 0, return);
43 ctx->ref--;
46 void isl_ctx_free(struct isl_ctx *ctx)
48 if (!ctx)
49 return;
50 isl_assert(ctx, ctx->ref == 0, return);
51 isl_hash_table_clear(&ctx->name_hash);
52 isl_blk_clear_cache(ctx);
53 isl_int_clear(ctx->one);
54 free(ctx);