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== Get the subprocess to launch == | == Get the subprocess to launch == | ||
Here we reach a fork in the road of implementation. You can either continue to follow this guide, which will walk through creating a new, dummy, non-Firefox main process, or you can roughly follow the steps here but adapt them so that they end up launching your subprocess class from the existing Firefox process. | |||
'''REMEMBER''': these steps create a new, non-Firefox main process. | |||
Create the directory <code>ipc/test-harness/app</code> and see that it gets added to the <code>TOOL_DIRS</code> var in your Makefile. Create the file <code>ipc/test-harness/app/TestApp.cpp</code> with the following content. | |||
#include "nsXULAppAPI.h" | |||
#if defined(XP_WIN) | |||
#include <windows.h> | |||
#include "nsWindowsWMain.cpp" | |||
#endif | |||
int | |||
main(int argc, char* argv[]) | |||
{ | |||
return XRE_RunIPCTestHarness(argc, argv); | |||
} | |||
Now re-open <code>xpcom/build/nsXULAppAPI.h</code> and add the declaration | |||
XRE_API(int, | |||
XRE_RunTestHarness, (int aArgc, | |||
char* aArgv[])) | |||
Re-open <code>toolkit/xre/nsEmbedFunctions.cpp</code>. See that | |||
#include "mozilla/test/TestProcessParent.h" | |||
#include "mozilla/test/TestParent.h" | |||
using mozilla::test::TestProcessParent; | |||
using mozilla::test::TestParent; | |||
get added somewhere in the file. Add the following code. | |||
//----------------------------------------------------------------------------- | |||
// TestHarness | |||
static void | |||
TestHarnessMain(TestProcessParent* subprocess) | |||
{ | |||
TestParent parent; | |||
parent.Open(subprocess->GetChannel()); | |||
parent.DoStuff(); | |||
} | |||
static void | |||
TestHarnessLaunchSubprocess(TestProcessParent* subprocess, | |||
MessageLoop* mainLoop) | |||
{ | |||
NS_ASSERTION(subprocess->Launch(), "can't launch subprocess"); | |||
mainLoop->PostTask(FROM_HERE, | |||
NewRunnableFunction(TestHarnessMain, subprocess)); | |||
} | |||
static void | |||
TestHarnessPostLaunchSubprocessTask(void* data) | |||
{ | |||
TestProcessParent* subprocess = new TestProcessParent(); | |||
MessageLoop* ioLoop = | |||
BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO); | |||
ioLoop->PostTask(FROM_HERE, | |||
NewRunnableFunction(TestHarnessLaunchSubprocess, | |||
subprocess, | |||
MessageLoop::current())); | |||
} | |||
int | |||
XRE_RunTestHarness(int aArgc, char* aArgv[]) | |||
{ | |||
nsresult rv = | |||
XRE_InitParentProcess( | |||
aArgc, aArgv, TestHarnessPostLaunchSubprocessTask, NULL); | |||
NS_ENSURE_SUCCESS(rv, 1); | |||
return 0; | |||
} | |||
(Sorry, this CPS-like code is a little hard to follow.) | |||
This code will not compile because <code>TestParent::DoStuff()</code> has not been implemented. Everything else is set up though! | |||
== Make the TestParent/TestChild do stuff == | |||