6 * This software is part of the SBCL system. See the README file for
9 * This software is derived from the CMU CL system, which was
10 * written at Carnegie Mellon University and released into the
11 * public domain. The software is in the public domain and is
12 * provided with absolutely no warranty. See the COPYING and CREDITS
13 * files for more information.
23 #define GET_FREE_POINTER() dynamic_space_free_pointer
24 #define SET_FREE_POINTER(new_value) \
25 (dynamic_space_free_pointer = (new_value))
26 #define GET_GC_TRIGGER() current_auto_gc_trigger
27 #define SET_GC_TRIGGER(new_value) \
28 clear_auto_gc_trigger(); set_auto_gc_trigger(new_value);
30 #define ALIGNED_SIZE(n) (n+lowtag_Mask) & ~lowtag_Mask
33 extern lispobj *alloc(int bytes);
40 /* Round to dual word boundary. */
41 bytes = (bytes + lowtag_Mask) & ~lowtag_Mask;
43 result = GET_FREE_POINTER();
45 SET_FREE_POINTER(result + (bytes / sizeof(lispobj)));
47 if (GET_GC_TRIGGER() && GET_FREE_POINTER() > GET_GC_TRIGGER()) {
48 SET_GC_TRIGGER((char *)GET_FREE_POINTER()
49 - (char *)current_dynamic_space);
56 alloc_unboxed(int type, int words)
60 result = alloc(ALIGNED_SIZE((1 + words) * sizeof(lispobj)));
61 *result = (lispobj) (words << type_Bits) | type;
66 alloc_vector(int type, int length, int size)
68 struct vector *result;
70 result = (struct vector *)
71 alloc(ALIGNED_SIZE((2 + (length*size + 31) / 32) * sizeof(lispobj)));
73 result->header = type;
74 result->length = make_fixnum(length);
76 return ((lispobj)result)|type_OtherPointer;
80 alloc_cons(lispobj car, lispobj cdr)
82 struct cons *ptr = (struct cons *)alloc(ALIGNED_SIZE(sizeof(struct cons)));
87 return (lispobj)ptr | type_ListPointer;
95 if (-0x20000000 < n && n < 0x20000000)
96 return make_fixnum(n);
98 ptr = (struct bignum *)alloc_unboxed(type_Bignum, 1);
102 return (lispobj) ptr | type_OtherPointer;
107 alloc_string(char *str)
109 int len = strlen(str);
110 lispobj result = alloc_vector(type_SimpleString, len+1, 8);
111 struct vector *vec = (struct vector *)native_pointer(result);
113 vec->length = make_fixnum(len);
114 strcpy((char *)vec->data, str);
122 int n_words_to_alloc =
123 (sizeof(struct sap) - sizeof(lispobj)) / sizeof(u32);
125 (struct sap *)alloc_unboxed((int)type_Sap, n_words_to_alloc);
127 return (lispobj) sap | type_OtherPointer;