include/isl_ctx.h

   1 #ifndef ISL_CTX_H
   2 #define ISL_CTX_H
   3
   4 #include <assert.h>
   5 #include <stdlib.h>
   6
   7 #include <isl_int.h>
   8 #include <isl_blk.h>
   9 #include <isl_hash.h>
  10 #include <isl_libs.h>
  11
  12 #if defined(__cplusplus)
  13 extern "C" {
  14 #endif
  15
  16 /* Nearly all isa functions require a struct isl_ctx allocated using
  17  * isl_ctx_alloc.  This ctx contains (or will contain) options that
  18  * control the behavior of the library and some caches.
  19  *
  20  * An object allocated within a given ctx should never be used inside
  21  * another ctx.  Functions for moving objects from one ctx to another
  22  * will be added as the need arises.
  23  *
  24  * A given context should only be used inside a single thread.
  25  * A global context for synchronization between different threads
  26  * as well as functions for moving a context to a different thread
  27  * will be added as the need arises.
  28  *
  29  * If anything goes wrong (out of memory, failed assertion), then
  30  * the library will currently simply abort.  This will be made
  31  * configurable in the future.
  32  * Users of the library should expect functions that return
  33  * a pointer to a structure, to return NULL, indicating failure.
  34  * Any function accepting a pointer to a structure will treat
  35  * a NULL argument as a failure, resulting in the function freeing
  36  * the remaining structures (if any) and returning NULL itself
  37  * (in case of pointer return type).
  38  * The only exception is the isl_ctx argument, which shoud never be NULL.
  39  */
  40 struct isl_stats {
  41         long    gbr_solved_lps;
  42 };
  43 struct isl_ctx {
  44         int                     ref;
  45
  46         struct isl_stats        *stats;
  47
  48         isl_int                 one;
  49         isl_int                 negone;
  50
  51         isl_int                 normalize_gcd;
  52
  53         int                     n_cached;
  54         struct isl_blk          cache[ISL_BLK_CACHE_SIZE];
  55         struct isl_hash_table   name_hash;
  56 #ifdef ISL_POLYLIB
  57         unsigned                MaxRays;
  58 #endif
  59
  60         #define                 ISL_LP_TAB      0
  61         #define                 ISL_LP_PIP      1
  62         unsigned                lp_solver;
  63
  64         #define                 ISL_ILP_GBR     0
  65         #define                 ISL_ILP_PIP     1
  66         unsigned                ilp_solver;
  67
  68         #define                 ISL_PIP_TAB     0
  69         #define                 ISL_PIP_PIP     1
  70         unsigned                pip;
  71
  72         #define                 ISL_GBR_NEVER   0
  73         #define                 ISL_GBR_ONCE    1
  74         #define                 ISL_GBR_ALWAYS  2
  75         unsigned                gbr;
  76         unsigned                gbr_only_first;
  77 };
  78
  79 /* Some helper macros */
  80
  81 #define ISL_FL_INIT(l, f)   (l) = (f)               /* Specific flags location. */
  82 #define ISL_FL_SET(l, f)    ((l) |= (f))
  83 #define ISL_FL_CLR(l, f)    ((l) &= ~(f))
  84 #define ISL_FL_ISSET(l, f)  (!!((l) & (f)))
  85
  86 #define ISL_F_INIT(p, f)    ISL_FL_INIT((p)->flags, f)  /* Structure element flags. */
  87 #define ISL_F_SET(p, f)     ISL_FL_SET((p)->flags, f)
  88 #define ISL_F_CLR(p, f)     ISL_FL_CLR((p)->flags, f)
  89 #define ISL_F_ISSET(p, f)   ISL_FL_ISSET((p)->flags, f)
  90
  91 #define isl_alloc(ctx,type,size)        (type *)malloc(size)
  92 #define isl_calloc(ctx,type,size)       (type *)calloc(1, size)
  93 #define isl_realloc(ctx,ptr,type,size)  (type *)realloc(ptr,size)
  94 #define isl_alloc_type(ctx,type)        isl_alloc(ctx,type,sizeof(type))
  95 #define isl_calloc_type(ctx,type)       isl_calloc(ctx,type,sizeof(type))
  96 #define isl_realloc_type(ctx,ptr,type)  isl_realloc(ctx,ptr,type,sizeof(type))
  97 #define isl_alloc_array(ctx,type,n)     isl_alloc(ctx,type,(n)*sizeof(type))
  98 #define isl_calloc_array(ctx,type,n)    (type *)calloc(n, sizeof(type))
  99 #define isl_realloc_array(ctx,ptr,type,n) \
 100                                     isl_realloc(ctx,ptr,type,(n)*sizeof(type))
 101
 102 #define isl_assert(ctx,test,code)       assert(test)
 103
 104 #define isl_min(a,b)                    ((a < b) ? (a) : (b))
 105
 106 /* struct isl_ctx functions */
 107
 108 struct isl_ctx *isl_ctx_alloc();
 109 void isl_ctx_ref(struct isl_ctx *ctx);
 110 void isl_ctx_deref(struct isl_ctx *ctx);
 111 void isl_ctx_free(struct isl_ctx *ctx);
 112
 113 #if defined(__cplusplus)
 114 }
 115 #endif
 116
 117 #endif