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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jsapi-tests/testPreserveJitCode.cpp | |
parent | Initial commit. (diff) | |
download | firefox-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 '')
-rw-r--r-- | js/src/jsapi-tests/testPreserveJitCode.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testPreserveJitCode.cpp b/js/src/jsapi-tests/testPreserveJitCode.cpp new file mode 100644 index 0000000000..e27e63f2d1 --- /dev/null +++ b/js/src/jsapi-tests/testPreserveJitCode.cpp @@ -0,0 +1,100 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/Utf8.h" // mozilla::Utf8Unit + +#include "jit/Ion.h" // js::jit::IsIonEnabled +#include "js/CallAndConstruct.h" // JS::CallFunction +#include "js/CompilationAndEvaluation.h" // JS::CompileFunction +#include "js/GlobalObject.h" // JS_NewGlobalObject +#include "js/SourceText.h" // JS::Source{Ownership,Text} +#include "jsapi-tests/tests.h" +#include "util/Text.h" + +#include "vm/JSObject-inl.h" +#include "vm/JSScript-inl.h" + +using namespace JS; + +static void ScriptCallback(JSRuntime* rt, void* data, js::BaseScript* script, + const JS::AutoRequireNoGC& nogc) { + unsigned& count = *static_cast<unsigned*>(data); + if (script->asJSScript()->hasIonScript()) { + ++count; + } +} + +BEGIN_TEST(test_PreserveJitCode) { + CHECK(testPreserveJitCode(false, 0)); + CHECK(testPreserveJitCode(true, 1)); + return true; +} + +unsigned countIonScripts(JSObject* global) { + unsigned count = 0; + js::IterateScripts(cx, global->nonCCWRealm(), &count, ScriptCallback); + return count; +} + +bool testPreserveJitCode(bool preserveJitCode, unsigned remainingIonScripts) { + cx->runtime()->setOffthreadIonCompilationEnabled(false); + + RootedObject global(cx, createTestGlobal(preserveJitCode)); + CHECK(global); + JSAutoRealm ar(cx, global); + + // The Ion JIT may be unavailable due to --disable-jit or lack of support + // for this platform. + if (!js::jit::IsIonEnabled(cx)) { + knownFail = true; + } + + CHECK_EQUAL(countIonScripts(global), 0u); + + static constexpr char source[] = + "var i = 0;\n" + "var sum = 0;\n" + "while (i < 10) {\n" + " sum += i;\n" + " ++i;\n" + "}\n" + "return sum;\n"; + constexpr unsigned length = js_strlen(source); + + JS::SourceText<mozilla::Utf8Unit> srcBuf; + CHECK(srcBuf.init(cx, source, length, JS::SourceOwnership::Borrowed)); + + JS::CompileOptions options(cx); + options.setFileAndLine(__FILE__, 1); + + JS::RootedFunction fun(cx); + JS::RootedObjectVector emptyScopeChain(cx); + fun = JS::CompileFunction(cx, emptyScopeChain, options, "f", 0, nullptr, + srcBuf); + CHECK(fun); + + RootedValue value(cx); + for (unsigned i = 0; i < 1500; ++i) { + CHECK(JS_CallFunction(cx, global, fun, JS::HandleValueArray::empty(), + &value)); + } + CHECK_EQUAL(value.toInt32(), 45); + CHECK_EQUAL(countIonScripts(global), 1u); + + NonIncrementalGC(cx, JS::GCOptions::Normal, GCReason::API); + CHECK_EQUAL(countIonScripts(global), remainingIonScripts); + + NonIncrementalGC(cx, JS::GCOptions::Shrink, GCReason::API); + CHECK_EQUAL(countIonScripts(global), 0u); + + return true; +} + +JSObject* createTestGlobal(bool preserveJitCode) { + JS::RealmOptions options; + options.creationOptions().setPreserveJitCode(preserveJitCode); + return JS_NewGlobalObject(cx, getGlobalClass(), nullptr, + JS::FireOnNewGlobalHook, options); +} +END_TEST(test_PreserveJitCode) |