Changeset 212 for trunk/utils.c

Timestamp:

2006-10-04T02:38:45+02:00 (7 years ago)

Author:

moo

Message:

fixed #41, early class binding

File:

• trunk/utils.c (modified) (8 diffs)

trunk/utils.c

@@ -1 @@
-#include "php.h"
+
 #include "xcache.h"
 #include "utils.h"
@@ -9 +9 @@
 #include "assert.h"
 
+#ifndef ZEND_VM_SET_OPCODE_HANDLER
+#   define ZEND_VM_SET_OPCODE_HANDLER(opline) do { } while (0)
+#endif
+
+#define OP_ZVAL_DTOR(op) do { \
+    (op).u.constant.is_ref = 0; \
+    zval_dtor(&(op).u.constant); \
+} while(0)
 xc_compile_result_t *xc_compile_result_init(xc_compile_result_t *cr, /* {{{ */
         zend_op_array *op_array,
@@ -264 +272 @@
 /* }}} */
 #endif
+
+int xc_foreach_early_binding_class(zend_op_array *op_array, void (*callback)(zend_op *opline, int oplineno, void *data TSRMLS_DC), void *data TSRMLS_DC) /* {{{ */
+{
+    zend_op *opline, *begin, *end, *next = NULL;
+    xc_cest_t cest;
+
+    opline = begin = op_array->opcodes;
+    end = opline + op_array->last;
+    while (opline < end) {
+        switch (opline->opcode) {
+            case ZEND_JMP:
+                next = begin + opline->op1.u.opline_num;
+                break;
+
+            case ZEND_JMPZNZ:
+                next = begin + max(opline->op2.u.opline_num, opline->extended_value);
+                break;
+
+            case ZEND_JMPZ:
+            case ZEND_JMPNZ:
+            case ZEND_JMPZ_EX:
+            case ZEND_JMPNZ_EX:
+                next = begin + opline->op2.u.opline_num;
+                break;
+
+            case ZEND_RETURN:
+                opline = end;
+                break;
+
+            case ZEND_DECLARE_INHERITED_CLASS:
+                callback(opline, opline - begin, data TSRMLS_CC);
+                break;
+        }
+
+        if (opline < next) {
+            opline = next;
+        }
+        else {
+            opline ++;
+        }
+    }
+}
+/* }}} */
+int xc_do_early_binding(zend_op_array *op_array, HashTable *class_table, int oplineno TSRMLS_DC) /* {{{ */
+{
+    zend_op *opline, *opcodes;
+
+#ifdef DEBUG
+    fprintf(stderr, "binding %d\n", oplineno);
+#endif
+    assert(oplineno >= 0);
+
+    /* do early binding */
+    opline = &(op_array->opcodes[oplineno]);
+
+    switch (opline->opcode) {
+    case ZEND_DECLARE_INHERITED_CLASS:
+#ifdef ZEND_ENGINE_2
+        {
+            zval *parent_name;
+            zend_class_entry **pce;
+            parent_name = &(opline - 1)->op2.u.constant;
+#ifdef DEBUG
+            fprintf(stderr, "binding with parent %s\n", Z_STRVAL_P(parent_name));
+#endif
+            if (zend_lookup_class(Z_STRVAL_P(parent_name), Z_STRLEN_P(parent_name), &pce TSRMLS_CC) == FAILURE) {
+                return FAILURE;
+            }
+
+            if (do_bind_inherited_class(opline, class_table, *pce, 1 TSRMLS_CC) == NULL) {
+                return FAILURE;
+            }
+        }
+#else
+        if (do_bind_function_or_class(opline, NULL, class_table, 1) == FAILURE) {
+            return FAILURE;
+        }
+#endif
+
+#ifdef ZEND_FETCH_CLASS
+        /* clear unnecessary ZEND_FETCH_CLASS opcode */
+        if (opline > op_array->opcodes
+         && (opline - 1)->opcode == ZEND_FETCH_CLASS) {
+            zend_op *fetch_class_opline = opline - 1;
+
+#ifdef DEBUG
+            fprintf(stderr, "%s %p\n", Z_STRVAL(fetch_class_opline->op2.u.constant), Z_STRVAL(fetch_class_opline->op2.u.constant));
+#endif
+            OP_ZVAL_DTOR(fetch_class_opline->op2);
+            fetch_class_opline->opcode = ZEND_NOP;
+            ZEND_VM_SET_OPCODE_HANDLER(fetch_class_opline);
+            memset(&fetch_class_opline->op1, 0, sizeof(znode));
+            memset(&fetch_class_opline->op2, 0, sizeof(znode));
+            SET_UNUSED(fetch_class_opline->op1);
+            SET_UNUSED(fetch_class_opline->op2);
+            SET_UNUSED(fetch_class_opline->result);
+        }
+#endif
+        break;
+
+    default:
+        return FAILURE;
+    }
+
+    zend_hash_del(class_table, opline->op1.u.constant.value.str.val, opline->op1.u.constant.value.str.len);
+    OP_ZVAL_DTOR(opline->op1);
+    OP_ZVAL_DTOR(opline->op2);
+    opline->opcode = ZEND_NOP;
+    ZEND_VM_SET_OPCODE_HANDLER(opline);
+    memset(&opline->op1, 0, sizeof(znode));
+    memset(&opline->op2, 0, sizeof(znode));
+    SET_UNUSED(opline->op1);
+    SET_UNUSED(opline->op2);
+    return SUCCESS;
+}
+/* }}} */
 
 #ifdef HAVE_XCACHE_CONSTANT
@@ -320 +444 @@
 }
 /* }}} */
-ZESW(xc_cest_t *, void) xc_install_class(char *filename, xc_cest_t *cest, zend_uchar type, zstr key, uint len TSRMLS_DC) /* {{{ */
+ZESW(xc_cest_t *, void) xc_install_class(char *filename, xc_cest_t *cest, int oplineno, zend_uchar type, zstr key, uint len TSRMLS_DC) /* {{{ */
 {
     zend_bool istmpkey;
@@ -336 +460 @@
                     ZESW(&stored_ce_ptr, NULL)
                     );
+        if (oplineno != -1) {
+            xc_do_early_binding(CG(active_op_array), CG(class_table), oplineno TSRMLS_CC);
+        }
     }
     else if (zend_u_hash_add(CG(class_table), type, key, len,
@@ -349 +476 @@
         zend_error(E_ERROR, "Cannot redeclare class %s", cep->name);
 #endif
+        assert(oplineno == -1);
     }
     ZESW(return (xc_cest_t *) stored_ce_ptr, NOTHING);
@@ -403 +531 @@
 
     return sandbox;
+}
+/* }}} */
+static void xc_early_binding_cb(zend_op *opline, int oplineno, void *data TSRMLS_DC) /* {{{ */
+{
+    xc_sandbox_t *sandbox = (xc_sandbox_t *) data;
+    xc_do_early_binding(CG(active_op_array), OG(class_table), oplineno TSRMLS_CC);
 }
 /* }}} */
@@ -433 +567 @@
     /* install class */
     while (b != NULL) {
-        xc_install_class(sandbox->filename, (xc_cest_t*) b->pData,
+        xc_install_class(sandbox->filename, (xc_cest_t*) b->pData, -1,
                 BUCKET_KEY_TYPE(b), ZSTR(BUCKET_KEY_S(b)), b->nKeyLength TSRMLS_CC);
         b = b->pListNext;
     }
+    xc_undo_pass_two(CG(active_op_array) TSRMLS_CC);
+    xc_foreach_early_binding_class(CG(active_op_array), xc_early_binding_cb, (void *) sandbox TSRMLS_CC);
+    xc_redo_pass_two(CG(active_op_array) TSRMLS_CC);
 
     i = 1;