1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jsapi-tests/testConservativeGC.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,88 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#if !defined(JSGC_USE_EXACT_ROOTING)
1.9 +
1.10 +#include "jsobj.h"
1.11 +
1.12 +#include "jsapi-tests/tests.h"
1.13 +#include "vm/String.h"
1.14 +
1.15 +BEGIN_TEST(testConservativeGC)
1.16 +{
1.17 + JS::RootedValue v2(cx);
1.18 + EVAL("({foo: 'bar'});", &v2);
1.19 + CHECK(v2.isObject());
1.20 + char objCopy[sizeof(JSObject)];
1.21 + js_memcpy(&objCopy, JSVAL_TO_OBJECT(v2), sizeof(JSObject));
1.22 +
1.23 + JS::RootedValue v3(cx);
1.24 + EVAL("String(Math.PI);", &v3);
1.25 + CHECK(JSVAL_IS_STRING(v3));
1.26 + char strCopy[sizeof(JSString)];
1.27 + js_memcpy(&strCopy, JSVAL_TO_STRING(v3), sizeof(JSString));
1.28 +
1.29 + JS::RootedValue tmp(cx);
1.30 + EVAL("({foo2: 'bar2'});", &tmp);
1.31 + CHECK(tmp.isObject());
1.32 + JS::RootedObject obj2(cx, JSVAL_TO_OBJECT(tmp));
1.33 + char obj2Copy[sizeof(JSObject)];
1.34 + js_memcpy(&obj2Copy, obj2, sizeof(JSObject));
1.35 +
1.36 + EVAL("String(Math.sqrt(3));", &tmp);
1.37 + CHECK(JSVAL_IS_STRING(tmp));
1.38 + JS::RootedString str2(cx, JSVAL_TO_STRING(tmp));
1.39 + char str2Copy[sizeof(JSString)];
1.40 + js_memcpy(&str2Copy, str2, sizeof(JSString));
1.41 +
1.42 + tmp = JSVAL_NULL;
1.43 +
1.44 + JS_GC(rt);
1.45 +
1.46 + EVAL("var a = [];\n"
1.47 + "for (var i = 0; i != 10000; ++i) {\n"
1.48 + "a.push(i + 0.1, [1, 2], String(Math.sqrt(i)), {a: i});\n"
1.49 + "}", &tmp);
1.50 +
1.51 + JS_GC(rt);
1.52 +
1.53 + checkObjectFields((JSObject *)objCopy, JSVAL_TO_OBJECT(v2));
1.54 + CHECK(!memcmp(strCopy, JSVAL_TO_STRING(v3), sizeof(strCopy)));
1.55 +
1.56 + checkObjectFields((JSObject *)obj2Copy, obj2);
1.57 + CHECK(!memcmp(str2Copy, str2, sizeof(str2Copy)));
1.58 +
1.59 + return true;
1.60 +}
1.61 +
1.62 +bool checkObjectFields(JSObject *savedCopy, JSObject *obj)
1.63 +{
1.64 + /* Ignore fields which are unstable across GCs. */
1.65 + CHECK(savedCopy->lastProperty() == obj->lastProperty());
1.66 + return true;
1.67 +}
1.68 +
1.69 +END_TEST(testConservativeGC)
1.70 +
1.71 +BEGIN_TEST(testDerivedValues)
1.72 +{
1.73 + JSString *str = JS_NewStringCopyZ(cx, "once upon a midnight dreary");
1.74 + JS::Anchor<JSString *> str_anchor(str);
1.75 + static const jschar expected[] = { 'o', 'n', 'c', 'e' };
1.76 + const jschar *ch = JS_GetStringCharsZ(cx, str);
1.77 + str = nullptr;
1.78 +
1.79 + /* Do a lot of allocation and collection. */
1.80 + for (int i = 0; i < 3; i++) {
1.81 + for (int j = 0; j < 1000; j++)
1.82 + JS_NewStringCopyZ(cx, "as I pondered weak and weary");
1.83 + JS_GC(rt);
1.84 + }
1.85 +
1.86 + CHECK(!memcmp(ch, expected, sizeof(expected)));
1.87 + return true;
1.88 +}
1.89 +END_TEST(testDerivedValues)
1.90 +
1.91 +#endif /* !defined(JSGC_USE_EXACT_ROOTING) */
