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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: */
/* 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/. */
/*
* Test that sync messages preempt other messages in the expected way.
*/
#include "gtest/gtest.h"
#include "mozilla/_ipdltest/IPDLUnitTest.h"
#include "mozilla/_ipdltest/PTestUrgencyChild.h"
#include "mozilla/_ipdltest/PTestUrgencyParent.h"
using namespace mozilla::ipc;
namespace mozilla::_ipdltest {
enum {
kFirstTestBegin = 1,
kFirstTestGotReply,
kSecondTestBegin,
kSecondTestGotReply,
};
class TestUrgencyParent : public PTestUrgencyParent {
NS_INLINE_DECL_REFCOUNTING(TestUrgencyParent, override)
private:
IPCResult RecvTest1(uint32_t* value) final override {
EXPECT_TRUE(SendReply1(value));
EXPECT_EQ(*value, (uint32_t)99) << "unexpected value";
return IPC_OK();
}
IPCResult RecvTest2() final override {
uint32_t value;
inreply_ = true;
EXPECT_TRUE(SendReply2(&value));
inreply_ = false;
EXPECT_EQ(value, (uint32_t)500) << "unexpected value";
return IPC_OK();
}
IPCResult RecvTest3(uint32_t* value) final override {
EXPECT_FALSE(inreply_) << "nested non-urgent on top of urgent message";
*value = 1000;
return IPC_OK();
}
IPCResult RecvFinalTest_Begin() final override { return IPC_OK(); }
~TestUrgencyParent() = default;
bool inreply_ = false;
};
class TestUrgencyChild : public PTestUrgencyChild {
NS_INLINE_DECL_REFCOUNTING(TestUrgencyChild, override)
private:
IPCResult RecvStart() final override {
uint32_t result;
// Send a synchronous message, expect to get an urgent message while
// blocked.
test_ = kFirstTestBegin;
EXPECT_TRUE(SendTest1(&result));
EXPECT_EQ(result, (uint32_t)99) << "wrong value from SendTest1";
EXPECT_EQ(test_, kFirstTestGotReply)
<< "never received first urgent message";
// Initiate the next test by sending an asynchronous message, then becoming
// blocked. This tests that the urgent message is still delivered properly,
// and that the parent does not try to service the sync
test_ = kSecondTestBegin;
EXPECT_TRUE(SendTest2());
EXPECT_TRUE(SendTest3(&result));
EXPECT_EQ(test_, kSecondTestGotReply)
<< "never received second urgent message";
EXPECT_EQ(result, (uint32_t)1000) << "wrong value from SendTest3";
EXPECT_TRUE(SendFinalTest_Begin());
Close();
return IPC_OK();
}
IPCResult RecvReply1(uint32_t* reply) final override {
EXPECT_EQ(test_, kFirstTestBegin) << "wrong test state in RecvReply1";
*reply = 99;
test_ = kFirstTestGotReply;
return IPC_OK();
}
IPCResult RecvReply2(uint32_t* reply) final override {
EXPECT_EQ(test_, kSecondTestBegin) << "wrong test state in RecvReply2";
*reply = 500;
test_ = kSecondTestGotReply;
return IPC_OK();
}
~TestUrgencyChild() = default;
uint32_t test_ = 0;
};
// Only run cross-process because we need to send nested sync messages (this can
// only be done from the main thread).
IPDL_TEST_ON(CROSSPROCESS, TestUrgency) { EXPECT_TRUE(mActor->SendStart()); }
} // namespace mozilla::_ipdltest
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