X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Falloc.c;h=121a40b2c8e000bb9e78ef916fd2f9082498e7c7;hb=df679ed627975948b1cee190f4d79c397588c43e;hp=0e0a438efa12e270c0b7ee35bcc0ae1710846f70;hpb=1e4629723d19f96d752235ffde34fe58431431ae;p=sbcl.git

diff --git a/src/runtime/alloc.c b/src/runtime/alloc.c
index 0e0a438..121a40b 100644
--- a/src/runtime/alloc.c
+++ b/src/runtime/alloc.c
@@ -1,5 +1,6 @@
 /*
- * allocation routines
+ * allocation routines for C code.  For allocation done by Lisp look 
+ * instead at src/compiler/target/alloc.lisp and .../macros.lisp
  */
 
 /*
@@ -13,13 +14,20 @@
  * files for more information.
  */
 
+#include <stdio.h>
+#include <string.h>
+
 #include "runtime.h"
+#include "os.h"
 #include "sbcl.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) \
@@ -30,11 +38,28 @@
 
 #define ALIGNED_SIZE(n) (n+LOWTAG_MASK) & ~LOWTAG_MASK
 
-#if defined GENCGC
+#if defined LISP_FEATURE_GENCGC
 extern lispobj *alloc(int bytes);
+lispobj *
+pa_alloc(int bytes) 
+{
+    lispobj *result=0;
+    struct thread *th=arch_os_get_current_thread();
+    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; 
+}
+
 #else
 static lispobj *
-alloc(int bytes)
+pa_alloc(int bytes)
 {
     char *result;
 
@@ -53,12 +78,13 @@ alloc(int bytes)
 }
 #endif
 
+
 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;
 }
@@ -69,23 +95,23 @@ alloc_vector(int type, int length, int size)
     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
@@ -100,7 +126,7 @@ alloc_number(long n)
 
         ptr->digits[0] = n;
 
-	return (lispobj) ptr | OTHER_POINTER_LOWTAG;
+	return make_lispobj(ptr, OTHER_POINTER_LOWTAG);
     }
 }
 
@@ -124,5 +150,5 @@ alloc_sap(void *ptr)
     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);
 }