X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fcheneygc.c;h=2ba625077e16a06eeadc7ed1a8f878615970ee5f;hb=29a168e2bf7a6d509dea282cc5c781aba734d87c;hp=6679f111fcb866f7faeb833b8d3aebe468901e09;hpb=481348f2f96f364374f669786f9fc61348decabc;p=sbcl.git

diff --git a/src/runtime/cheneygc.c b/src/runtime/cheneygc.c
index 6679f11..2ba6250 100644
--- a/src/runtime/cheneygc.c
+++ b/src/runtime/cheneygc.c
@@ -30,6 +30,7 @@
 #include "genesis/static-symbols.h"
 #include "genesis/primitive-objects.h"
 #include "thread.h"
+#include "arch.h"
 
 /* So you need to debug? */
 #if 0
@@ -47,9 +48,6 @@ lispobj *new_space;
 lispobj *new_space_free_pointer;
 
 static void scavenge_newspace(void);
-static void scavenge_interrupt_contexts(void);
-
-extern unsigned long bytes_consed_between_gcs;
 
 
 /* collecting garbage */
@@ -89,7 +87,7 @@ zero_stack(void)
 
 
 void *
-gc_general_alloc(long bytes, int unboxed_p, int quick_p) {
+gc_general_alloc(long bytes, int page_type_flag, int quick_p) {
     lispobj *new=new_space_free_pointer;
     new_space_free_pointer+=(bytes/N_WORD_BYTES);
     return new;
@@ -109,7 +107,7 @@ lispobj  copy_large_object(lispobj object, long nwords) {
  * last_generation argument. That's meaningless for us, since we're
  * not a generational GC. So we ignore it. */
 void
-collect_garbage(unsigned ignore)
+collect_garbage(generation_index_t ignore)
 {
 #ifdef PRINTNOISE
     struct timeval start_tv, stop_tv;
@@ -124,8 +122,6 @@ collect_garbage(unsigned ignore)
     unsigned long control_stack_size, binding_stack_size;
     sigset_t tmp, old;
     struct thread *th=arch_os_get_current_thread();
-    struct interrupt_data *data=th->interrupt_data;
-
 
 #ifdef PRINTNOISE
     printf("[Collecting garbage ... \n");
@@ -177,8 +173,8 @@ collect_garbage(unsigned ignore)
     printf("Scavenging interrupt handlers (%d bytes) ...\n",
            (int)sizeof(interrupt_handlers));
 #endif
-    scavenge((lispobj *) data->interrupt_handlers,
-             sizeof(data->interrupt_handlers) / sizeof(lispobj));
+    scavenge((lispobj *) interrupt_handlers,
+             sizeof(interrupt_handlers) / sizeof(lispobj));
 
     /* _size quantities are in units of sizeof(lispobj) - i.e. 4 */
     control_stack_size =
@@ -225,11 +221,16 @@ collect_garbage(unsigned ignore)
 
     /* Scan the weak pointers. */
 #ifdef PRINTNOISE
+    printf("Scanning weak hash tables ...\n");
+#endif
+    scan_weak_hash_tables();
+
+    /* Scan the weak pointers. */
+#ifdef PRINTNOISE
     printf("Scanning weak pointers ...\n");
 #endif
     scan_weak_pointers();
 
-
     /* Flip spaces. */
 #ifdef PRINTNOISE
     printf("Flipping spaces ...\n");
@@ -238,8 +239,12 @@ collect_garbage(unsigned ignore)
     /* Maybe FIXME: it's possible that we could significantly reduce
      * RSS by zeroing the from_space or madvise(MADV_DONTNEED) or
      * similar os-dependent tricks here */
+#ifdef LISP_FEATURE_HPUX
+    /* hpux cant handle unmapping areas that are not 100% mapped */
+    clear_auto_gc_trigger();
+#endif
     os_zero((os_vm_address_t) from_space,
-            (os_vm_size_t) DYNAMIC_SPACE_SIZE);
+            (os_vm_size_t) dynamic_space_size);
 
     current_dynamic_space = new_space;
     dynamic_space_free_pointer = new_space_free_pointer;
@@ -299,6 +304,7 @@ scavenge_newspace(void)
                 here,new_space_free_pointer); */
         next = new_space_free_pointer;
         scavenge(here, next - here);
+        scav_weak_hash_tables();
         here = next;
     }
     /* printf("done with newspace\n"); */
@@ -335,9 +341,9 @@ scavenge_interrupt_context(os_context_t *context)
        0x7FFFFFFFFFFFFFFF on 64-bit platforms */
     lip_offset = (((unsigned long)1) << (N_WORD_BITS - 1)) - 1;
     lip_register_pair = -1;
-    for (i = 0; i < (sizeof(boxed_registers) / sizeof(int)); i++) {
+    for (i = 0; i < (int)(sizeof(boxed_registers) / sizeof(int)); i++) {
         unsigned long reg;
-        long offset;
+        unsigned long offset;
         int index;
 
         index = boxed_registers[i];
@@ -370,7 +376,7 @@ scavenge_interrupt_context(os_context_t *context)
 #endif
 
     /* Scavenge all boxed registers in the context. */
-    for (i = 0; i < (sizeof(boxed_registers) / sizeof(int)); i++) {
+    for (i = 0; i < (int)(sizeof(boxed_registers) / sizeof(int)); i++) {
         int index;
         lispobj foo;
 
@@ -492,20 +498,6 @@ print_garbage(lispobj *from_space, lispobj *from_space_free_pointer)
 }
 
 
-/* vector-like objects */
-
-static long
-scav_vector(lispobj *where, lispobj object)
-{
-    if (HeaderValue(object) == subtype_VectorValidHashing) {
-        *where =
-            (subtype_VectorMustRehash<<N_WIDETAG_BITS) | SIMPLE_VECTOR_WIDETAG;
-    }
-
-    return 1;
-}
-
-
 /* weak pointers */
 
 #define WEAK_POINTER_NWORDS \
@@ -564,7 +556,6 @@ void
 gc_init(void)
 {
     gc_init_tables();
-    scavtab[SIMPLE_VECTOR_WIDETAG] = scav_vector;
     scavtab[WEAK_POINTER_WIDETAG] = scav_weak_pointer;
 }
 
@@ -586,34 +577,28 @@ gc_initialize_pointers(void)
 /* noise to manipulate the gc trigger stuff */
 
 /* Functions that substantially change the dynamic space free pointer
- * (collect_garbage, purify) are responsible also for resettting the
+ * (collect_garbage, purify) are responsible also for resetting the
  * auto_gc_trigger */
 void set_auto_gc_trigger(os_vm_size_t dynamic_usage)
 {
-    os_vm_address_t addr=(os_vm_address_t)current_dynamic_space
-        + dynamic_usage;
-    long length = DYNAMIC_SPACE_SIZE - dynamic_usage;
-
-    if (addr < (os_vm_address_t)dynamic_space_free_pointer) {
-        fprintf(stderr,
-           "set_auto_gc_trigger: tried to set gc trigger too low! (%ld < 0x%08lx)\n",
-                (unsigned long)dynamic_usage,
-                (unsigned long)((os_vm_address_t)dynamic_space_free_pointer
-                                - (os_vm_address_t)current_dynamic_space));
-        lose("lost");
-    }
-    else if (length < 0) {
-        fprintf(stderr,
-                "set_auto_gc_trigger: tried to set gc trigger too high! (0x%08lx)\n",
-                (unsigned long)dynamic_usage);
-        lose("lost");
-    }
-
-    addr=os_round_up_to_page(addr);
-    length=os_trunc_size_to_page(length);
-
-#if defined(SUNOS) || defined(SOLARIS)
-    os_invalidate(addr,length);
+    os_vm_address_t addr;
+    os_vm_size_t length;
+
+    addr = os_round_up_to_page((os_vm_address_t)current_dynamic_space
+                               + dynamic_usage);
+    if (addr < (os_vm_address_t)dynamic_space_free_pointer)
+        lose("set_auto_gc_trigger: tried to set gc trigger too low! (%ld < 0x%08lx)\n",
+             (unsigned long)dynamic_usage,
+             (unsigned long)((os_vm_address_t)dynamic_space_free_pointer
+                             - (os_vm_address_t)current_dynamic_space));
+
+    length = os_trunc_size_to_page(dynamic_space_size - dynamic_usage);
+    if (length < 0)
+        lose("set_auto_gc_trigger: tried to set gc trigger too high! (0x%08lx)\n",
+             (unsigned long)dynamic_usage);
+
+#if defined(SUNOS) || defined(SOLARIS) || defined(LISP_FEATURE_HPUX)
+    os_invalidate(addr, length);
 #else
     os_protect(addr, length, 0);
 #endif
@@ -623,19 +608,60 @@ void set_auto_gc_trigger(os_vm_size_t dynamic_usage)
 
 void clear_auto_gc_trigger(void)
 {
-    if (current_auto_gc_trigger!=NULL){
-#if defined(SUNOS) || defined(SOLARIS)/* don't want to force whole space into swapping mode... */
-        os_vm_address_t addr=(os_vm_address_t)current_auto_gc_trigger;
-        os_vm_size_t length=
-            DYNAMIC_SPACE_SIZE + (os_vm_address_t)current_dynamic_space - addr;
+    os_vm_address_t addr;
+    os_vm_size_t length;
 
-        os_validate(addr,length);
+    if (current_auto_gc_trigger == NULL)
+        return;
+
+    addr = (os_vm_address_t)current_auto_gc_trigger;
+    length = dynamic_space_size + (os_vm_address_t)current_dynamic_space - addr;
+
+#if defined(SUNOS) || defined(SOLARIS) || defined(LISP_FEATURE_HPUX)
+    /* don't want to force whole space into swapping mode... */
+    os_validate(addr, length);
 #else
-        os_protect((os_vm_address_t)current_dynamic_space,
-                   DYNAMIC_SPACE_SIZE,
-                   OS_VM_PROT_ALL);
+    os_protect(addr, length, OS_VM_PROT_ALL);
 #endif
 
-        current_auto_gc_trigger = NULL;
+    current_auto_gc_trigger = NULL;
+}
+
+static boolean
+gc_trigger_hit(void *addr)
+{
+    if (current_auto_gc_trigger == NULL)
+        return 0;
+    else{
+        return (addr >= (void *)current_auto_gc_trigger &&
+                addr <((void *)current_dynamic_space + dynamic_space_size));
+    }
+}
+
+boolean
+cheneygc_handle_wp_violation(os_context_t *context, void *addr)
+{
+    if(!foreign_function_call_active && gc_trigger_hit(addr)){
+        struct thread *thread=arch_os_get_current_thread();
+        clear_auto_gc_trigger();
+        /* Don't flood the system with interrupts if the need to gc is
+         * already noted. This can happen for example when SUB-GC
+         * allocates or after a gc triggered in a WITHOUT-GCING. */
+        if (SymbolValue(GC_PENDING,thread) == NIL) {
+            if (SymbolValue(GC_INHIBIT,thread) == NIL) {
+                if (arch_pseudo_atomic_atomic(context)) {
+                    /* set things up so that GC happens when we finish
+                     * the PA section */
+                    SetSymbolValue(GC_PENDING,T,thread);
+                    arch_set_pseudo_atomic_interrupted(context);
+                } else {
+                    maybe_gc(context);
+                }
+            } else {
+                SetSymbolValue(GC_PENDING,T,thread);
+            }
+        }
+        return 1;
     }
+    return 0;
 }