0.9.2.42:

[sbcl.git] / src / runtime / alloc.c

diff --git a/src/runtime/alloc.c b/src/runtime/alloc.c
index 00a24f1..e53b278 100644 (file)
--- 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 "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) \
@@ -32,9 +40,27 @@
 
 #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();
+    /* 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();
+    return result;
+}
+
 #else
 static lispobj *
-alloc(int bytes)
+pa_alloc(int bytes)
 {
     char *result;
 
@@ -46,19 +72,20 @@ 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;
 }
 #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;
 }
@@ -69,7 +96,7 @@ 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);
@@ -80,7 +107,7 @@ alloc_vector(int type, int length, int size)
 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;
@@ -100,15 +127,15 @@ alloc_number(long n)
 
         ptr->digits[0] = n;
 
-       return make_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);
@@ -122,7 +149,7 @@ alloc_sap(void *ptr)
 {
     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);
 }