Changeset 1448 in svn

Timestamp:

2013-11-07T10:04:00Z (5 years ago)

Author:

Xuefer

Message:

updated relocate impl

Location:

trunk

Files:

• mod_cacher/xc_cacher.c (modified) (1 diff)
• processor/foot.m4 (modified) (1 diff)

trunk/mod_cacher/xc_cacher.c

@@ -182 +182 @@
         fprintf(stderr, "%lu\n", stored_php->size);
         memcpy(p, stored_php, stored_php->size);
-        xc_processor_relocate_xc_entry_data_php_t(p, stored_php, p TSRMLS_CC);
+        xc_processor_relocate_xc_entry_data_php_t(p, stored_php, 0, p TSRMLS_CC);
     }
 #endif

trunk/processor/foot.m4

@@ -136 +136 @@
 }
 dnl }}}
+#define ptradd(type, ptr, ptrdiff) ((type) ((char *) (ptr) + (ptrdiff)))
+#define ptrsub(ptr1, ptr2) ((char *) (ptr1) - (char *)(ptr2))
 define(`DEFINE_RELOCATE_API', `
-EXPORTED_FUNCTION(`void xc_processor_relocate_$1($1 *src, $1 *old_start, $1 *new_start TSRMLS_DC)') dnl {{{
+EXPORTED_FUNCTION(`void xc_processor_relocate_$1($1 *old_src, $1 *old_start, $1 *new_src, $1 *new_start TSRMLS_DC)') dnl {{{
 {
-    /*
-    $1 *xc_addressof(offset) {
-        return (char *) offset + (ptrdiff_t) old_start;
-    }
-    */
-    ptrdiff_t ptrdiff = /* offset + */ (ptrdiff_t) old_start;
+    ptrdiff_t offset_from_old_start = 0; /* unkown X used later */
+    $1 *const old_address = ptradd($1 *, offset_from_old_start, (ptrdiff_t) old_start);
+    ptrdiff_t offset = ptrsub(old_address, old_src);
+    $1 *const new_address = ptradd($1 *, new_src, offset);
 
-    /*
-    ptrdiff_t *xc_offsetof(offset) {
-        return (char *) xc_addressof(offset) - src;
-    }
+    /* diff to new_ptr */
+    ptrdiff_t ptrdiff = (ptrdiff_t) new_address;
+    ptrdiff_t relocatediff = (ptrdiff_t) ptradd($1 *, new_start, offset);
 
-    $1 *xc_newoffset(offset) {
-        return new_start + xc_offsetof(offset);
-    }
-    */
-    ptrdiff_t relocatediff = new_start + (/* offset + */ ptrdiff - (ptrdiff_t) src);
-
-    xc_relocate_$1(src, ptrdiff, relocatediff TSRMLS_CC);
+    xc_relocate_$1(new_src, ptrdiff, relocatediff TSRMLS_CC);
 }
 dnl }}}