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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
*
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/
* Contributor: Igor Bukanov
*/
#include "jsapi-tests/tests.h"
BEGIN_TEST(testGCOutOfMemory)
{
JS::RootedValue root(cx);
// Count the number of allocations until we hit OOM, and store it in 'max'.
static const char source[] =
"var max = 0; (function() {"
" var array = [];"
" for (; ; ++max)"
" array.push({});"
" array = []; array.push(0);"
"})();";
JS::CompileOptions opts(cx);
bool ok = JS::Evaluate(cx, opts, source, strlen(source), &root);
/* Check that we get OOM. */
CHECK(!ok);
CHECK(JS_GetPendingException(cx, &root));
CHECK(root.isString());
bool match = false;
CHECK(JS_StringEqualsAscii(cx, root.toString(), "out of memory", &match));
CHECK(match);
JS_ClearPendingException(cx);
JS_GC(cx);
// The above GC should have discarded everything. Verify that we can now
// allocate half as many objects without OOMing.
EVAL("(function() {"
" var array = [];"
" for (var i = max >> 2; i != 0;) {"
" --i;"
" array.push({});"
" }"
"})();", &root);
CHECK(!JS_IsExceptionPending(cx));
return true;
}
virtual JSContext* createContext() override {
// Note that the max nursery size must be less than the whole heap size, or
// the test will fail because 'max' (the number of allocations required for
// OOM) will be based on the nursery size, and that will overflow the
// tenured heap, which will cause the second pass with max/4 allocations to
// OOM. (Actually, this only happens with nursery zeal, because normally
// the nursery will start out with only a single chunk before triggering a
// major GC.)
JSContext* cx = JS_NewContext(1024 * 1024, 128 * 1024);
if (!cx)
return nullptr;
setNativeStackQuota(cx);
return cx;
}
virtual void destroyContext() override {
JS_DestroyContext(cx);
}
END_TEST(testGCOutOfMemory)
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