/*
- * allocation routines
+ * allocation routines for C code. For allocation done by Lisp look
+ * instead at src/compiler/target/alloc.lisp and .../macros.lisp
*/
/*
* files for more information.
*/
-#include "runtime.h"
+#include <stdio.h>
+#include <string.h>
+
#include "sbcl.h"
+#include "runtime.h"
+#include "os.h"
#include "alloc.h"
#include "globals.h"
#include "gc.h"
-#include <stdio.h>
-#include <string.h>
+#include "thread.h"
+#include "genesis/vector.h"
+#include "genesis/cons.h"
+#include "genesis/bignum.h"
+#include "genesis/sap.h"
-#define GET_FREE_POINTER() dynamic_space_free_pointer
-#define SET_FREE_POINTER(new_value) \
- (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);
+#define ALIGNED_SIZE(n) ((n) + LOWTAG_MASK) & ~LOWTAG_MASK
-#define ALIGNED_SIZE(n) (n+LOWTAG_MASK) & ~LOWTAG_MASK
-
-#if defined GENCGC
+#ifdef LISP_FEATURE_GENCGC
extern lispobj *alloc(int bytes);
-#else
+#endif
+
static lispobj *
-alloc(int bytes)
+pa_alloc(int bytes)
{
lispobj *result;
+#ifdef LISP_FEATURE_GENCGC
+ struct thread *th = arch_os_get_current_thread();
+
+ /* FIXME: OOAO violation: see arch_pseudo_* */
+ SetSymbolValue(PSEUDO_ATOMIC_INTERRUPTED, make_fixnum(0),th);
+ SetSymbolValue(PSEUDO_ATOMIC_ATOMIC, make_fixnum(1),th);
+ result = alloc(bytes);
+ SetSymbolValue(PSEUDO_ATOMIC_ATOMIC, make_fixnum(0),th);
+ if (fixnum_value(SymbolValue(PSEUDO_ATOMIC_INTERRUPTED,th)))
+ /* Even if we gc at this point, the new allocation will be
+ * protected from being moved, because result is on the c stack
+ * and points to it. */
+ do_pending_interrupt();
+#else
+ /* FIXME: this is not pseudo atomic at all, but is called only from
+ * interrupt safe places like interrupt handlers. MG - 2005-08-09 */
+ result = dynamic_space_free_pointer;
- /* Round to dual word boundary. */
- bytes = (bytes + LOWTAG_MASK) & ~LOWTAG_MASK;
-
- result = GET_FREE_POINTER();
+ /* Align up to next dual word boundary. */
+ bytes = ALIGNED_SIZE(bytes);
- SET_FREE_POINTER(result + (bytes / sizeof(lispobj)));
+ dynamic_space_free_pointer = (lispobj *)((char *)result + bytes);
- if (GET_GC_TRIGGER() && GET_FREE_POINTER() > GET_GC_TRIGGER()) {
- SET_GC_TRIGGER((char *)GET_FREE_POINTER()
- - (char *)current_dynamic_space);
+ if (current_auto_gc_trigger
+ && dynamic_space_free_pointer > current_auto_gc_trigger) {
+ clear_auto_gc_trigger();
+ set_auto_gc_trigger((char *)dynamic_space_free_pointer
+ - (char *)current_dynamic_space);
}
+#endif
return result;
}
-#endif
-static lispobj *
+
+lispobj *
alloc_unboxed(int type, int words)
{
lispobj *result;
- result = alloc(ALIGNED_SIZE((1 + words) * sizeof(lispobj)));
+ result = pa_alloc(ALIGNED_SIZE((1 + words) * sizeof(lispobj)));
*result = (lispobj) (words << N_WIDETAG_BITS) | type;
return result;
}
struct vector *result;
result = (struct vector *)
- alloc(ALIGNED_SIZE((2 + (length*size + 31) / 32) * sizeof(lispobj)));
+ pa_alloc(ALIGNED_SIZE((2 + (length*size + 31) / 32) * sizeof(lispobj)));
result->header = type;
result->length = make_fixnum(length);
- return ((lispobj)result)|OTHER_POINTER_LOWTAG;
+ return make_lispobj(result,OTHER_POINTER_LOWTAG);
}
lispobj
alloc_cons(lispobj car, lispobj cdr)
{
- struct cons *ptr = (struct cons *)alloc(ALIGNED_SIZE(sizeof(struct cons)));
+ struct cons *ptr = (struct cons *)pa_alloc(ALIGNED_SIZE(sizeof(struct cons)));
ptr->car = car;
ptr->cdr = cdr;
- return (lispobj)ptr | LIST_POINTER_LOWTAG;
+ return make_lispobj(ptr, LIST_POINTER_LOWTAG);
}
lispobj
ptr->digits[0] = n;
- return (lispobj) ptr | OTHER_POINTER_LOWTAG;
+ return make_lispobj(ptr, OTHER_POINTER_LOWTAG);
}
}
lispobj
-alloc_string(char *str)
+alloc_base_string(char *str)
{
int len = strlen(str);
- lispobj result = alloc_vector(SIMPLE_STRING_WIDETAG, len+1, 8);
+ lispobj result = alloc_vector(SIMPLE_BASE_STRING_WIDETAG, len+1, 8);
struct vector *vec = (struct vector *)native_pointer(result);
vec->length = make_fixnum(len);
lispobj
alloc_sap(void *ptr)
{
- int n_words_to_alloc =
- (sizeof(struct sap) - sizeof(lispobj)) / sizeof(u32);
- struct sap *sap =
- (struct sap *)alloc_unboxed((int)SAP_WIDETAG, n_words_to_alloc);
+ struct sap *sap;
+ sap=(struct sap *)
+ alloc_unboxed((int)SAP_WIDETAG, sizeof(struct sap)/sizeof(lispobj) -1);
sap->pointer = ptr;
- return (lispobj) sap | OTHER_POINTER_LOWTAG;
+ return make_lispobj(sap,OTHER_POINTER_LOWTAG);
}