/*
- * allocation routines for C code. For allocation done by Lisp look
+ * allocation routines for C code. For allocation done by Lisp look
* instead at src/compiler/target/alloc.lisp and .../macros.lisp
*/
#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
#if defined LISP_FEATURE_GENCGC
extern lispobj *alloc(int bytes);
lispobj *
-pa_alloc(int bytes)
+pa_alloc(int bytes)
{
lispobj *result=0;
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 (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();
- return result;
+ 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();
+ return result;
}
#else
+
+#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);
+
+/* FIXME: this is not pseudo atomic at all, but is called only from
+ * interrupt safe places like interrupt handlers. MG - 2005-08-09 */
static lispobj *
pa_alloc(int bytes)
{
SET_FREE_POINTER((lispobj *)(result + bytes));
if (GET_GC_TRIGGER() && GET_FREE_POINTER() > GET_GC_TRIGGER()) {
- SET_GC_TRIGGER((char *)GET_FREE_POINTER()
- - (char *)current_dynamic_space);
+ SET_GC_TRIGGER((char *)GET_FREE_POINTER()
+ - (char *)current_dynamic_space);
}
return (lispobj *) result;
}
ptr->digits[0] = n;
- return make_lispobj(ptr, OTHER_POINTER_LOWTAG);
+ return make_lispobj(ptr, OTHER_POINTER_LOWTAG);
}
}
{
struct sap *sap;
sap=(struct sap *)
- alloc_unboxed((int)SAP_WIDETAG, sizeof(struct sap)/sizeof(lispobj) -1);
+ alloc_unboxed((int)SAP_WIDETAG, sizeof(struct sap)/sizeof(lispobj) -1);
sap->pointer = ptr;
return make_lispobj(sap,OTHER_POINTER_LOWTAG);
}