}
always_inline uword *
-clfib_bitmap_set_region (uword * bitmap, uword i, uword value, uword n_bits)
+clib_bitmap_set_region (uword * bitmap, uword i, uword value, uword n_bits)
{
uword a0, a1, b0;
uword i_end, mask;
always_inline uword
clib_bitmap_first_set (uword * ai)
{
- uword i;
- for (i = 0; i < vec_len (ai); i++)
+ uword i = 0;
+#if uword_bits == 64
+#if defined(CLIB_HAVE_VEC256)
+ while (i + 7 < vec_len (ai))
+ {
+ u64x4 v;
+ v = u64x4_load_unaligned (ai + i) | u64x4_load_unaligned (ai + i + 4);
+ if (!u64x4_is_all_zero (v))
+ break;
+ i += 8;
+ }
+#elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_UNALIGNED_LOAD_STORE)
+ while (i + 3 < vec_len (ai))
+ {
+ u64x2 v;
+ v = u64x2_load_unaligned (ai + i) | u64x2_load_unaligned (ai + i + 2);
+ if (!u64x2_is_all_zero (v))
+ break;
+ i += 4;
+ }
+#endif
+#endif
+ for (; i < vec_len (ai); i++)
{
uword x = ai[i];
if (x != 0)
}
/* ALU functions: */
+/* *INDENT-OFF* */
_(and, a = a & b, 1)
-_(andnot, a = a & ~b, 1) _(or, a = a | b, 0) _(xor, a = a ^ b, 1)
+_(andnot, a = a & ~b, 1)
+_(or, a = a | b, 0)
+_(xor, a = a ^ b, 1)
+/* *INDENT-ON* */
#undef _
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai and bi. Neither ai nor bi are modified
*/
- always_inline uword *
- clib_bitmap_dup_and (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_dup_and (uword * ai, uword * bi);
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai & ~bi. Neither ai nor bi are modified
*/
- always_inline uword *
- clib_bitmap_dup_andnot (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_dup_andnot (uword * ai, uword * bi);
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai or bi. Neither ai nor bi are modified
*/
- always_inline uword *
- clib_bitmap_dup_or (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_dup_or (uword * ai, uword * bi);
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai xor bi. Neither ai nor bi are modified
*/
- always_inline uword *
- clib_bitmap_dup_xor (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_dup_xor (uword * ai, uword * bi);
#define _(name) \
always_inline uword * \
clib_bitmap_dup_##name (uword * ai, uword * bi) \
{ return clib_bitmap_##name (clib_bitmap_dup (ai), bi); }
+/* *INDENT-OFF* */
_(and);
_(andnot);
_(or);
_(xor);
-
+/* *INDENT-ON* */
#undef _
-/* ALU function definition macro for functions taking one bitmap and an immediate. */
+/* ALU function definition macro for functions taking one bitmap and an
+ * immediate. */
#define _(name, body, check_zero) \
always_inline uword * \
clib_bitmap_##name (uword * ai, uword i) \
}
/* ALU functions immediate: */
+/* *INDENT-OFF* */
_(andi, a = a & b, 1)
-_(andnoti, a = a & ~b, 1) _(ori, a = a | b, 0) _(xori, a = a ^ b, 1)
+_(andnoti, a = a & ~b, 1)
+_(ori, a = a | b, 0)
+_(xori, a = a ^ b, 1)
+/* *INDENT-ON* */
+#undef _
+
+/* ALU function definition macro for functions taking one bitmap and an
+ * immediate. No tail trimming */
+#define _(name, body) \
+always_inline uword * \
+clib_bitmap_##name##_notrim (uword * ai, uword i) \
+{ \
+ uword i0 = i / BITS (ai[0]); \
+ uword i1 = i % BITS (ai[0]); \
+ uword a, b; \
+ clib_bitmap_vec_validate (ai, i0); \
+ a = ai[i0]; \
+ b = (uword) 1 << i1; \
+ do { body; } while (0); \
+ ai[i0] = a; \
+ return ai; \
+}
+
+/* ALU functions immediate: */
+/* *INDENT-OFF* */
+_(andi, a = a & b)
+_(andnoti, a = a & ~b)
+_(ori, a = a | b)
+_(xori, a = a ^ b)
#undef _
+/* *INDENT-ON* */
+
/** Return a random bitmap of the requested length
@param ai - pointer to the destination bitmap
@param n_bits - number of bits to allocate
@param [in,out] seed - pointer to the random number seed
@returns a reasonably random bitmap based. See random.h.
*/
- always_inline uword *
- clib_bitmap_random (uword * ai, uword n_bits, u32 * seed)
+always_inline uword *
+clib_bitmap_random (uword * ai, uword n_bits, u32 * seed)
{
vec_reset_length (ai);
if (t)
return log2_first_set (t) + i0 * BITS (ai[0]);
}
+
+ /* no clear bit left in bitmap, return bit just beyond bitmap */
+ return (i0 + 1) * BITS (ai[0]);
}
return i;
}
+/** unformat an any sized hexadecimal bitmask into a bitmap
+
+ uword * bitmap;
+ rv = unformat ("%U", unformat_bitmap_mask, &bitmap);
+
+ Standard unformat_function_t arguments
+
+ @param input - pointer an unformat_input_t
+ @param va - varargs list comprising a single uword **
+ @returns 1 on success, 0 on failure
+*/
+static inline uword
+unformat_bitmap_mask (unformat_input_t * input, va_list * va)
+{
+ u8 *v = 0; /* hexadecimal vector */
+ uword **bitmap_return = va_arg (*va, uword **);
+ uword *bitmap = 0;
+
+ if (unformat (input, "%U", unformat_hex_string, &v))
+ {
+ int i, s = vec_len (v) - 1; /* 's' for significance or shift */
+
+ /* v[0] holds the most significant byte */
+ for (i = 0; s >= 0; i++, s--)
+ bitmap = clib_bitmap_set_multiple (bitmap,
+ s * BITS (v[i]), v[i],
+ BITS (v[i]));
+
+ vec_free (v);
+ *bitmap_return = bitmap;
+ return 1;
+ }
+
+ return 0;
+}
+
/** unformat a list of bit ranges into a bitmap (eg "0-3,5-7,11" )
uword * bitmap;
Code Review / vpp.git / blobdiff