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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jsapi-tests/testGCOutOfMemory.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jsapi-tests/testGCOutOfMemory.cpp')
-rw-r--r--js/src/jsapi-tests/testGCOutOfMemory.cpp79
1 files changed, 79 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testGCOutOfMemory.cpp b/js/src/jsapi-tests/testGCOutOfMemory.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ *
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor: Igor Bukanov
+ */
+
+#include "mozilla/Utf8.h" // mozilla::Utf8Unit
+
+#include "gc/GCEnum.h" // js::gc::ZealMode
+#include "js/CompilationAndEvaluation.h" // JS::Evaluate
+#include "js/SourceText.h" // JS::Source{Ownership,Text}
+#include "jsapi-tests/tests.h"
+
+BEGIN_TEST(testGCOutOfMemory) {
+ // 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);
+
+ JS::SourceText<mozilla::Utf8Unit> srcBuf;
+ CHECK(srcBuf.init(cx, source, strlen(source), JS::SourceOwnership::Borrowed));
+
+ JS::RootedValue root(cx);
+ bool ok = JS::Evaluate(cx, opts, srcBuf, &root);
+
+ /* Check that we get OOM. */
+ CHECK(!ok);
+ CHECK(JS_GetPendingException(cx, &root));
+ CHECK(root.isString());
+ bool match = false;
+ CHECK(JS_StringEqualsLiteral(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(4 * 1024 * 1024);
+ if (!cx) {
+ return nullptr;
+ }
+ JS_SetGCParameter(cx, JSGC_MAX_NURSERY_BYTES, js::gc::ChunkSize);
+#ifdef JS_GC_ZEAL
+ JS_UnsetGCZeal(cx, uint8_t(js::gc::ZealMode::GenerationalGC));
+#endif
+ return cx;
+}
+
+END_TEST(testGCOutOfMemory)