1.0.26.15: interrupt.c refactoring

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

diff --git a/src/runtime/cheneygc.c b/src/runtime/cheneygc.c
index 0f7d38b..62bd6de 100644 (file)
--- 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
@@ -48,8 +49,6 @@ lispobj *new_space_free_pointer;
 
 static void scavenge_newspace(void);
 
-extern unsigned long bytes_consed_between_gcs;
-
 \f
 /* collecting garbage */
 
@@ -88,7 +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;
@@ -133,9 +132,7 @@ collect_garbage(generation_index_t ignore)
 
     /* it's possible that signals are blocked already if this was called
      * from a signal handler (e.g. with the sigsegv gc_trigger stuff) */
-    sigemptyset(&tmp);
-    sigaddset_blockable(&tmp);
-    thread_sigmask(SIG_BLOCK, &tmp, &old);
+    block_blockable_signals(0, &old);
 
     current_static_space_free_pointer =
         (lispobj *) ((unsigned long)
@@ -240,6 +237,10 @@ collect_garbage(generation_index_t 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);
 
@@ -338,9 +339,9 @@ 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];
@@ -373,7 +374,7 @@ 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;
 
@@ -594,7 +595,7 @@ void set_auto_gc_trigger(os_vm_size_t dynamic_usage)
         lose("set_auto_gc_trigger: tried to set gc trigger too high! (0x%08lx)\n",
              (unsigned long)dynamic_usage);
 
-#if defined(SUNOS) || defined(SOLARIS)
+#if defined(SUNOS) || defined(SOLARIS) || defined(LISP_FEATURE_HPUX)
     os_invalidate(addr, length);
 #else
     os_protect(addr, length, 0);
@@ -614,7 +615,7 @@ void clear_auto_gc_trigger(void)
     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)
+#if defined(SUNOS) || defined(SOLARIS) || defined(LISP_FEATURE_HPUX)
     /* don't want to force whole space into swapping mode... */
     os_validate(addr, length);
 #else
@@ -623,3 +624,44 @@ void clear_auto_gc_trigger(void)
 
     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);
+                    maybe_save_gc_mask_and_block_deferrables
+                        (os_context_sigmask_addr(context));
+                } else {
+                    maybe_gc(context);
+                }
+            } else {
+                SetSymbolValue(GC_PENDING,T,thread);
+            }
+        }
+        return 1;
+    }
+    return 0;
+}