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/*
This code was written as part of the CMU Common Lisp project at
Carnegie Mellon University, and has been placed in the public domain.
*/
#include "lisp.h"
#include "internals.h"
#include "alloc.h"
#include "globals.h"
#include "gc.h"
#ifdef ibmrt
#define GET_FREE_POINTER() ((lispobj *)SymbolValue(ALLOCATION_POINTER))
#define SET_FREE_POINTER(new_value) \
(SetSymbolValue(ALLOCATION_POINTER,(lispobj)(new_value)))
#define GET_GC_TRIGGER() ((lispobj *)SymbolValue(INTERNAL_GC_TRIGGER))
#define SET_GC_TRIGGER(new_value) \
(SetSymbolValue(INTERNAL_GC_TRIGGER,(lispobj)(new_value)))
#else
#define GET_FREE_POINTER() current_dynamic_space_free_pointer
#define SET_FREE_POINTER(new_value) \
(current_dynamic_space_free_pointer = (new_value))
#define GET_GC_TRIGGER() current_auto_gc_trigger
#define SET_GC_TRIGGER(new_value) \
clear_auto_gc_trigger(); set_auto_gc_trigger(new_value);
#endif
/****************************************************************
Allocation Routines.
****************************************************************/
#if defined GENCGC
#define alloc(nbytes) alloc_pseudo_atomic(nbytes)
#include "gencgc.h"
#elif defined(WANT_CGC)
static lispobj *
alloc(int bytes)
{
lispobj *result;
/* Round to dual word boundry. */
bytes = (bytes + lowtag_Mask) & ~lowtag_Mask;
result = GET_FREE_POINTER();
SET_FREE_POINTER(result + (bytes / sizeof(lispobj)));
if (GET_GC_TRIGGER() && GET_FREE_POINTER() > GET_GC_TRIGGER()) {
SET_GC_TRIGGER((char *) GET_FREE_POINTER()
- (char *) current_dynamic_space);
static lispobj *
alloc_unboxed(int type, int words)
result = (lispobj *) alloc(ALIGNED_SIZE((1 + words) * sizeof(lispobj)));
*result = (lispobj) (words << type_Bits) | type;
return result;
}
static lispobj
alloc_vector(int type, int length, int size)
alloc(ALIGNED_SIZE((2 + (length * size + 31) / 32) * sizeof(lispobj)));
result->header = type;
result->length = make_fixnum(length);
return ((lispobj) result) | type_OtherPointer;
lispobj
alloc_cons(lispobj car, lispobj cdr)
struct cons *ptr = (struct cons *) alloc(ALIGNED_SIZE(sizeof(struct cons)));
return (lispobj) ptr | type_ListPointer;
lispobj
alloc_number(long n)
if (-0x2000000000000000 < n && n < 0x2000000000000000) /* -2^61 to 2^61 */
return make_fixnum(n);
ptr = (struct bignum *) alloc_unboxed(type_Bignum, 1);
alloc_string(const char *str)
lispobj result = alloc_vector(type_SimpleString, len + 1, 8);
struct vector *vec = (struct vector *) PTR(result);
strcpy((char *) vec->data, str);
return result;
}
#else
lispobj
alloc_string(const char *str)
{
int k;
int len = strlen(str);
lispobj result = alloc_vector(type_SimpleString, len + 1, 16);
struct vector *vec = (struct vector *) PTR(result);
unsigned short int *wide_char_data;
vec->length = make_fixnum(len);
wide_char_data = (unsigned short int*) vec->data;
for (k = 0; k < len; ++k) {
wide_char_data[k] = str[k] & 0xff;
}
#if 0
fprintf(stderr, "alloc-string: 0x%lx %d -> `%s'\n",
result, len, str);
#endif
lispobj
alloc_sap(void *ptr)
struct sap *sap_ptr = (struct sap *) alloc_unboxed(type_Sap, 1);
struct sap *sap_ptr = (struct sap *) alloc_unboxed(type_Sap, 3);
sap_ptr->pointer = ptr;
return (lispobj) sap_ptr | type_OtherPointer;