/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
#include <assert.h>
#include <stddef.h>
-#include "firm_config.h"
#include "obst.h"
#include "fourcc.h"
-#include "align.h"
#include "xmalloc.h"
-#define ARR_D_MAGIC FOURCC('A','R','R','D')
-#define ARR_A_MAGIC FOURCC('A','R','R','A')
-#define ARR_F_MAGIC FOURCC('A','R','R','F')
+#include "../begin.h"
/**
* Creates a flexible array.
* @return A pointer to the flexible array (can be used as a pointer to the
* first element of this array).
*/
-#define NEW_ARR_F(type, nelts) \
- ((type *)_new_arr_f ((nelts), sizeof(type) * (nelts)))
+#define NEW_ARR_F(type, nelts) \
+ ((type *)ir_new_arr_f((nelts), sizeof(type) * (nelts)))
/**
* Creates a new flexible array with the same number of elements as a
* @return A pointer to the flexible array (can be used as a pointer to the
* first element of this array).
*/
-#define CLONE_ARR_F(type, arr) \
- NEW_ARR_F (type, ARR_LEN ((arr)))
+#define CLONE_ARR_F(type, arr) \
+ NEW_ARR_F(type, ARR_LEN((arr)))
/**
* Duplicates an array and returns the new flexible one.
* @return A pointer to the flexible array (can be used as a pointer to the
* first element of this array).
*/
-#define DUP_ARR_F(type, arr) \
- memcpy (CLONE_ARR_F (type, (arr)), (arr), sizeof(type) * ARR_LEN((arr)))
+#define DUP_ARR_F(type, arr) \
+ ((type*) memcpy(CLONE_ARR_F(type, (arr)), (arr), sizeof(type) * ARR_LEN((arr))))
/**
* Delete a flexible array.
*
* @param arr The flexible array.
*/
-#define DEL_ARR_F(arr) (_del_arr_f ((arr)))
+#define DEL_ARR_F(arr) (ir_del_arr_f((void *)(arr)))
/**
* Creates a dynamic array on an obstack.
* @return A pointer to the dynamic array (can be used as a pointer to the
* first element of this array).
*/
-#define NEW_ARR_D(type, obstack, nelts) \
- ( nelts \
- ? (type *)_new_arr_d ((obstack), (nelts), sizeof(type) * (nelts)) \
- : (type *)arr_mt_descr.v.elts)
+#define NEW_ARR_D(type, obstack, nelts) \
+ ( nelts \
+ ? (type *)ir_new_arr_d((obstack), (nelts), sizeof(type) * (nelts)) \
+ : (type *)arr_mt_descr.elts)
/**
* Creates a new dynamic array with the same number of elements as a
* @return A pointer to the dynamic array (can be used as a pointer to the
* first element of this array).
*/
-#define CLONE_ARR_D(type, obstack, arr) \
- NEW_ARR_D (type, (obstack), ARR_LEN ((arr)))
+#define CLONE_ARR_D(type, obstack, arr) \
+ NEW_ARR_D(type, (obstack), ARR_LEN((arr)))
/**
* Duplicates an array and returns the new dynamic one.
* @return A pointer to the dynamic array (can be used as a pointer to the
* first element of this array).
*/
-#define DUP_ARR_D(type, obstack, arr) \
- memcpy (CLONE_ARR_D (type, (obstack), (arr)), (arr), sizeof(type) * ARR_LEN ((arr)))
-
-/**
- * Create an automatic array which will be deleted at return from function.
- * Beware, the data will be allocated on the function stack!
- *
- * @param type The element type of the new array.
- * @param var A lvalue of type (type *) which will hold the new array.
- * @param n number of elements in this array.
- *
- * This macro creates a dynamic array on the functions stack of a given type at runtime.
- * The size of the array cannot be changed later.
- */
-#define NEW_ARR_A(type, var, n) \
- do { \
- int _nelts = (n); \
- assert (_nelts >= 0); \
- (var) = (void *)((_arr_descr *)alloca (_ARR_ELTS_OFFS + sizeof(type) * _nelts))->v.elts; \
- _ARR_SET_DBGINF (_ARR_DESCR ((var)), ARR_A_MAGIC, sizeof (type)); \
- (void)(_ARR_DESCR ((var))->nelts = _nelts); \
- } while (0)
-
-/**
- * Creates a new automatic array with the same number of elements as a
- * given one.
- *
- * @param type The element type of the new array.
- * @param var A lvalue of type (type *) which will hold the new array.
- * @param arr An array from which the elements will be duplicated
- *
- * This macro creates a dynamic array of a given type at runtime.
- * The size of the array cannot be changed later.
- *
- * @return A pointer to the dynamic array (can be used as a pointer to the
- * first element of this array).
- */
-#define CLONE_ARR_A(type, var, arr) \
- NEW_ARR_A (type, (var), ARR_LEN ((arr)))
-
-/**
- * Duplicates an array and returns a new automatic one.
- *
- * @param type The element type of the new array.
- * @param var A lvalue of type (type *) which will hold the new array.
- * @param arr An array from with the number of elements will be taken
- *
- * This macro creates a dynamic array of a given type at runtime.
- * The size of the array cannot be changed later.
- *
- * @return A pointer to the dynamic array (can be used as a pointer to the
- * first element of this array).
- */
-#define DUP_ARR_A(type, var, arr) \
- do { CLONE_ARR_A(type, (var), (arr)); \
- memcpy ((var), (arr), sizeof (type) * ARR_LEN ((arr))); } \
- while (0)
-
-/**
- * Declare an initialized (zero'ed) array of fixed size.
- * This macro should be used at file scope only.
- *
- * @param type The element type of the new array.
- * @param var A lvalue of type (type *) which will hold the new array.
- * @param _nelts Number of elements in this new array.
- */
-#define DECL_ARR_S(type, var, _nelts) \
- ARR_STRUCT(type, (_nelts) ? (_nelts) : 1) _##var; \
- type *var = (_ARR_SET_DBGINF (&_##var, ARR_A_MAGIC, sizeof (type)), \
- _##var.nelts = _nelts, \
- _##var.v.elts)
+#define DUP_ARR_D(type, obstack, arr) \
+ ((type*)memcpy(CLONE_ARR_D(type, (obstack), (arr)), (arr), sizeof(type) * ARR_LEN ((arr))))
/**
* Returns the length of an array
*
* @param arr a flexible, dynamic, automatic or static array.
*/
-#define ARR_LEN(arr) (ARR_VRFY ((arr)), _ARR_DESCR((arr))->nelts)
+#define ARR_LEN(arr) (ARR_VRFY((arr)), ARR_DESCR((arr))->nelts)
/**
* Resize a flexible array, allocate more data if needed but do NOT
*
* @remark This macro may change arr, so update all references!
*/
-#define ARR_RESIZE(type, arr, n) \
- ((arr) = _arr_resize ((arr), (n), sizeof(type)))
+#define ARR_RESIZE(type, arr, n) \
+ ((arr) = (type*) ir_arr_resize((void *)(arr), (n), sizeof(type)))
/**
* Resize a flexible array, always reallocate data.
*
* @remark This macro may change arr, so update all references!
*/
-#define ARR_SETLEN(type, arr, n) \
- ((arr) = _arr_setlen ((arr), (n), sizeof(type) * (n)))
-
-/** Set a length smaller than the current length of the array. Do not
- * resize. len must be <= ARR_LEN(arr). */
-#define ARR_SHRINKLEN(arr,len) \
- (ARR_VRFY ((arr)), assert(_ARR_DESCR((arr))->nelts >= len), \
- _ARR_DESCR((arr))->nelts = len)
+#define ARR_SETLEN(type, arr, n) \
+ ((arr) = (type*) ir_arr_setlen((void *)(arr), (n), sizeof(type) * (n)))
/**
* Resize a flexible array by growing it by delta elements.
*
* @remark This macro may change arr, so update all references!
*/
-#define ARR_EXTEND(type, arr, delta) \
- ARR_RESIZE (type, (arr), ARR_LEN ((arr)) + (delta))
+#define ARR_EXTEND(type, arr, delta) \
+ ARR_RESIZE(type, (arr), ARR_LEN((arr)) + (delta))
/**
* Resize a flexible array to hold n elements only if it is currently shorter
*
* @remark This macro may change arr, so update all references!
*/
-#define ARR_EXTO(type, arr, n) \
- ((n) >= ARR_LEN ((arr)) ? ARR_RESIZE (type, (arr), (n)+1) : (arr))
+#define ARR_EXTO(type, arr, n) \
+ ((n) >= ARR_LEN((arr)) ? ARR_RESIZE(type, (arr), (n)+1) : (arr))
/**
* Append one element to a flexible array.
* @param arr The array, which must be an lvalue.
* @param elt The new element, must be of type (type).
*/
-#define ARR_APP1(type, arr, elt) \
- (ARR_EXTEND (type, (arr), 1), (arr)[ARR_LEN ((arr))-1] = (elt))
+#define ARR_APP1(type, arr, elt) \
+ (ARR_EXTEND(type, (arr), 1), (arr)[ARR_LEN((arr))-1] = (elt))
#ifdef NDEBUG
-# define ARR_VRFY(arr) ((void)0)
+# define ARR_VRFY(arr) ((void)0)
# define ARR_IDX_VRFY(arr, idx) ((void)0)
#else
-# define ARR_VRFY(arr) \
- assert ( ( (_ARR_DESCR((arr))->magic == ARR_D_MAGIC) \
- || (_ARR_DESCR((arr))->magic == ARR_A_MAGIC) \
- || (_ARR_DESCR((arr))->magic == ARR_F_MAGIC)) \
- && ( (_ARR_DESCR((arr))->magic != ARR_F_MAGIC) \
- || (_ARR_DESCR((arr))->u.allocated >= _ARR_DESCR((arr))->nelts)) \
- && (_ARR_DESCR((arr))->nelts >= 0))
-# define ARR_IDX_VRFY(arr, idx) \
- assert ((0 <= (idx)) && ((idx) < ARR_LEN ((arr))))
+# define ARR_VRFY(arr) ir_verify_arr(arr)
+# define ARR_IDX_VRFY(arr, idx) \
+ assert((0 <= (idx)) && ((idx) < ARR_LEN((arr))))
#endif
+/** A type that has most constrained alignment. */
+typedef union {
+ long double d;
+ void *p;
+ long l;
+} aligned_type;
-/* Private !!!
- Don't try this at home, kids, we're trained professionals ;->
- ... or at the IPD, either. */
-#ifdef NDEBUG
-# define _ARR_DBGINF_DECL
-# define _ARR_SET_DBGINF(descr, co, es)
-#else
-# define _ARR_DBGINF_DECL int magic; size_t eltsize;
-# define _ARR_SET_DBGINF(descr, co, es) \
- ( (descr)->magic = (co), (descr)->eltsize = (es) )
-#endif
-
-/**
- * Construct an array header.
- */
-#define ARR_STRUCT(type, _nelts) \
- struct { \
- _ARR_DBGINF_DECL \
- union { \
- struct obstack *obstack; /* dynamic: allocated on this obstack */ \
- int allocated; /* flexible: #slots allocated */ \
- } u; \
- int nelts; \
- union { \
- type elts[(_nelts)]; \
- aligned_type align[1]; \
- } v; \
- }
/**
* The array descriptor header type.
*/
-typedef ARR_STRUCT (aligned_type, 1) _arr_descr;
+typedef struct {
+ int magic; /**< array magic. */
+ size_t eltsize; /**< size of array elements. */
+ union {
+ struct obstack *obstack; /**< for obstack array: the obstack. */
+ size_t allocated; /**< number of allocated elements. */
+ } u;
+ size_t nelts; /**< current length of the array. */
+ aligned_type elts[1]; /**< start of the array data. */
+} ir_arr_descr;
+
+extern ir_arr_descr arr_mt_descr;
+
+FIRM_API void *ir_new_arr_f(size_t nelts, size_t elts_size);
+FIRM_API void ir_del_arr_f(void *elts);
+FIRM_API void *ir_new_arr_d(struct obstack *obstack, size_t nelts, size_t elts_size);
+FIRM_API void *ir_arr_resize(void *elts, size_t nelts, size_t elts_size);
+FIRM_API void *ir_arr_setlen(void *elts, size_t nelts, size_t elts_size);
+FIRM_API void ir_verify_arr(const void *elts);
+
+#define ARR_ELTS_OFFS offsetof(ir_arr_descr, elts)
+#define ARR_DESCR(elts) ((ir_arr_descr *)(void *)((char *)(elts) - ARR_ELTS_OFFS))
-extern _arr_descr arr_mt_descr;
-
-void *_new_arr_f (int nelts, size_t elts_size);
-void _del_arr_f (void *elts);
-void *_new_arr_d (struct obstack *obstack, int nelts, size_t elts_size);
-void *_arr_resize (void *elts, int nelts, size_t elts_size);
-void *_arr_setlen (void *elts, int nelts, size_t elts_size);
-
-#define _ARR_ELTS_OFFS offsetof (_arr_descr, v.elts)
-#define _ARR_DESCR(elts) ((_arr_descr *)(void *)((char *)(elts) - _ARR_ELTS_OFFS))
-
-/*
- ____ _ _ _
-/ ___| ___ _ __| |_ ___ __| | / \ _ __ _ __ __ _ _ _ ___
-\___ \ / _ \| '__| __/ _ \/ _` | / _ \ | '__| '__/ _` | | | / __|
- ___) | (_) | | | || __/ (_| | / ___ \| | | | | (_| | |_| \__ \
-|____/ \___/|_| \__\___|\__,_| /_/ \_\_| |_| \__,_|\__, |___/
- |___/
-*/
-
-typedef int (_arr_cmp_func_t)(const void *a, const void *b);
-
-/**
- * Do a binary search in an array.
- * @param arr The array.
- * @param elm_size The size of an array element.
- * @param cmp A comparison function for two array elements (see qsort(3) for example).
- * @param elm A pointer to the element we are looking for.
- * @return This is somewhat tricky. Let <code>res</code> be the return value.
- * If the return value is negative, then <code>elm</code> was not in the array
- * but <code>-res - 1</code> gives the proper location where it should be inserted.
- * If <code>res >= 0</code> then the element is in the array and <code>res</code>
- * represents its index.
- * That allows for testing membership and finding proper insertion indices.
- * @note The differences to bsearch(3) which does not give proper insert locations
- * in the case that the element is not conatined in the array.
- */
-static INLINE __attribute__((const, unused)) int
-_arr_bsearch(const void *arr, size_t elm_size, _arr_cmp_func_t *cmp, const void *elm)
+/** Set a length smaller than the current length of the array. Do not
+ * resize. len must be <= ARR_LEN(arr). */
+static inline void ARR_SHRINKLEN(void *arr, size_t new_len)
{
- int hi = ARR_LEN(arr);
- int lo = 0;
-
- while(lo < hi) {
- int md = lo + ((hi - lo) >> 1);
- int res = cmp((char *) arr + md * elm_size, elm);
- if(res < 0)
- lo = md + 1;
- else if(res > 0)
- hi = md;
- else
- return md;
- }
-
- return -(lo + 1);
+ ARR_VRFY(arr);
+ assert(ARR_DESCR(arr)->nelts >= new_len);
+ ARR_DESCR(arr)->nelts = new_len;
}
-#define ARR_SET_INSERT(arr, cmp, elm) \
-do { \
- int idx = _arr_bsearch((arr), sizeof((arr)[0]), (cmp), (elm)); \
- if (idx < 0) { \
- idx = -idx - 1; \
- memmove(&(arr)[idx+1], &(arr)[idx], sizeof((arr)[0]) * (_ARR_DESCR((arr))->nelts - idx)); \
- (arr)[idx] = *(elm); \
- ++_ARR_DESCR((arr))->nelts; \
- } \
-} while(0)
-
-#define ARR_SET_INSERT_EXT(type, arr, cmp, elm) \
-do { \
- int idx = _arr_bsearch((arr), sizeof((arr)[0]), (cmp), (elm)); \
- if (idx < 0) { \
- int len = ARR_LEN(arr); \
- idx = -idx - 1; \
- ARR_EXTO(type, arr, len + 1); \
- memmove(&(arr)[idx+1], &(arr)[idx], sizeof((arr)[0]) * (len - idx)); \
- (arr)[idx] = *(elm); \
- } \
-} while(0)
-
-#define ARR_SET_REMOVE(arr, cmp, elm) \
-do { \
- int idx = _arr_bsearch((arr), sizeof((arr)[0]), (cmp), (elm)); \
- if (idx >= 0) { \
- --_ARR_DESCR((arr))->nelts; \
- memmove(&(arr)[idx], &(arr)[idx+1], sizeof((arr)[0]) * (_ARR_DESCR((arr))->nelts - idx)); \
- } \
-} while(0)
-
-/**
- * Return the index of an element in an array set.
- * To check for containment, use the expression:
- * (ARR_SET_GET_IDX(arr, cmp, elm) >= 0)
- *
- * @return The index or some value < 0 if the element was not in the set.
- */
-#define ARR_SET_GET_IDX(arr, cmp, elm) \
- (ARR_VRFY((arr)), _arr_bsearch((arr), sizeof((arr)[0]), cmp, (elm)))
+#include "../end.h"
-#ifdef __GNUC__
-#define ARR_SET_GET(arr, cmp, elm) \
- ({ int idx = ARR_SET_GET_IDX(arr, cmp, elm); idx >= 0 ? &(arr)[idx] : NULL; })
-#else
-#define ARR_SET_GET(arr, cmp, elm) \
- (ARR_SET_GET_IDX(arr, cmp, elm) >= 0 ? &(arr)[ARR_SET_GET_IDX(arr, cmp, elm)] : NULL)
#endif
-
-
-#define ARR_SET_CONTAINS(arr, cmp, elm) \
- (ARR_SET_GET_IDX((arr), (cmp), (elm)) >= 0)
-
-/**
- * Reset the array set.
- * This just initializes the size to zero but does not wipe out any element.
- */
-#define ARR_SET_CLEAR(arr) ARR_SHRINKLEN(arr, 0)
-
-
-#endif /* FIRM_ADT_ARRAY_H */
projects / libfirm / blobdiff