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.
24 #define GET_FREE_POINTER() ((lispobj *)SymbolValue(ALLOCATION_POINTER))
25 #define SET_FREE_POINTER(new_value) \
26 (SetSymbolValue(ALLOCATION_POINTER,(lispobj)(new_value)))
27 #define GET_GC_TRIGGER() ((lispobj *)SymbolValue(INTERNAL_GC_TRIGGER))
28 #define SET_GC_TRIGGER(new_value) \
29 (SetSymbolValue(INTERNAL_GC_TRIGGER,(lispobj)(new_value)))
31 #define GET_FREE_POINTER() dynamic_space_free_pointer
32 #define SET_FREE_POINTER(new_value) \
33 (dynamic_space_free_pointer = (new_value))
34 #define GET_GC_TRIGGER() current_auto_gc_trigger
35 #define SET_GC_TRIGGER(new_value) \
36 clear_auto_gc_trigger(); set_auto_gc_trigger(new_value);
39 #define ALIGNED_SIZE(n) (n+lowtag_Mask) & ~lowtag_Mask
41 #if defined(WANT_CGC) || defined(GENCGC)
42 extern lispobj *alloc(int bytes);
49 /* Round to dual word boundary. */
50 bytes = (bytes + lowtag_Mask) & ~lowtag_Mask;
52 result = GET_FREE_POINTER();
54 SET_FREE_POINTER(result + (bytes / sizeof(lispobj)));
56 if (GET_GC_TRIGGER() && GET_FREE_POINTER() > GET_GC_TRIGGER()) {
57 SET_GC_TRIGGER((char *)GET_FREE_POINTER()
58 - (char *)current_dynamic_space);
65 alloc_unboxed(int type, int words)
69 result = alloc(ALIGNED_SIZE((1 + words) * sizeof(lispobj)));
70 *result = (lispobj) (words << type_Bits) | type;
75 alloc_vector(int type, int length, int size)
77 struct vector *result;
79 result = (struct vector *)
80 alloc(ALIGNED_SIZE((2 + (length*size + 31) / 32) * sizeof(lispobj)));
82 result->header = type;
83 result->length = make_fixnum(length);
85 return ((lispobj)result)|type_OtherPointer;
89 alloc_cons(lispobj car, lispobj cdr)
91 struct cons *ptr = (struct cons *)alloc(ALIGNED_SIZE(sizeof(struct cons)));
96 return (lispobj)ptr | type_ListPointer;
104 if (-0x20000000 < n && n < 0x20000000)
105 return make_fixnum(n);
107 ptr = (struct bignum *)alloc_unboxed(type_Bignum, 1);
111 return (lispobj) ptr | type_OtherPointer;
116 alloc_string(char *str)
118 int len = strlen(str);
119 lispobj result = alloc_vector(type_SimpleString, len+1, 8);
120 struct vector *vec = (struct vector *)PTR(result);
122 vec->length = make_fixnum(len);
123 strcpy((char *)vec->data, str);
131 int n_words_to_alloc =
132 (sizeof(struct sap) - sizeof(lispobj)) / sizeof(u32);
134 (struct sap *)alloc_unboxed ((int)type_Sap, n_words_to_alloc);
136 return (lispobj) sap | type_OtherPointer;