From 3d5aca66b9712758aecb2e80bc5b2fb3df6256a4 Mon Sep 17 00:00:00 2001
From: Alexis211 <alexis211@gmail.com>
Date: Wed, 16 Dec 2009 18:22:58 +0100
Subject: New model, object-oriented, for applications

---
 Source/Library/Userland/App/Application.proto.h    | 41 ++++++++++++++++++++++
 Source/Library/Userland/App/ShellApp.proto.h       | 18 ++++++++++
 .../Userland/Binding/VirtualTerminal.class.h       |  2 --
 Source/Library/Userland/Start.cpp                  | 37 ++++++++-----------
 4 files changed, 73 insertions(+), 25 deletions(-)
 create mode 100644 Source/Library/Userland/App/Application.proto.h
 create mode 100644 Source/Library/Userland/App/ShellApp.proto.h

(limited to 'Source/Library')

diff --git a/Source/Library/Userland/App/Application.proto.h b/Source/Library/Userland/App/Application.proto.h
new file mode 100644
index 0000000..1f3a963
--- /dev/null
+++ b/Source/Library/Userland/App/Application.proto.h
@@ -0,0 +1,41 @@
+#ifndef DEF_APPLICATION_PROTO_H
+#define DEF_APPLICATION_PROTO_H
+
+#include <Binding/Process.class.h>
+#include <String.class.h>
+
+extern u32int start_dtors, end_dtors;
+
+#define APP(t) static t the_app; \
+   	Application *app = &the_app;
+
+class Application {
+	public:
+	Process pr;
+	Vector<String> args;
+
+	Application() : pr(Process::get()), args(pr.argc()) {
+		for (u32int i = 0; i < args.size(); i++) args[i] = pr.argv(i);
+		//TODO : add default signal handlers
+	}
+	virtual ~Application() {}
+
+	virtual int run() = 0; //Application's main loop
+
+	virtual void doEvents() {
+		//TODO : handle signals (IPC featurs to come)
+	}
+
+	void exit(u32int ret) {
+		//Call static destructors 
+		for(u32int * call = &start_dtors; call < &end_dtors; call++) {
+			((void (*)(void))*call)();
+		}
+		threadFinishedSyscall(ret);
+	}
+};
+
+extern Application *app;
+
+#endif
+
diff --git a/Source/Library/Userland/App/ShellApp.proto.h b/Source/Library/Userland/App/ShellApp.proto.h
new file mode 100644
index 0000000..846f2b1
--- /dev/null
+++ b/Source/Library/Userland/App/ShellApp.proto.h
@@ -0,0 +1,18 @@
+#ifndef DEF_SHELLAPP_CLASS_H
+#define DEF_SHELLAPP_CLASS_H
+
+#include <App/Application.proto.h>
+#include <Binding/VirtualTerminal.class.h>
+
+class ShellApp : public Application {
+	public:
+	VirtualTerminal invt, outvt;
+	
+	ShellApp() : Application(), invt(VirtualTerminal::getIn()), outvt(VirtualTerminal::getOut()) {
+		if (!invt.valid()) exit(1);
+		if (!outvt.valid()) exit(2);
+	}
+};
+
+#endif
+
diff --git a/Source/Library/Userland/Binding/VirtualTerminal.class.h b/Source/Library/Userland/Binding/VirtualTerminal.class.h
index c8a4123..70c6b23 100644
--- a/Source/Library/Userland/Binding/VirtualTerminal.class.h
+++ b/Source/Library/Userland/Binding/VirtualTerminal.class.h
@@ -71,6 +71,4 @@ class VirtualTerminal : public RessourceCaller {
 	inline VirtualTerminal& operator<<(u32int i) { writeHex(i); return *this; }
 };
 
-extern VirtualTerminal invt, outvt;
-
 #endif
diff --git a/Source/Library/Userland/Start.cpp b/Source/Library/Userland/Start.cpp
index f1d1771..cb9faf9 100644
--- a/Source/Library/Userland/Start.cpp
+++ b/Source/Library/Userland/Start.cpp
@@ -1,46 +1,37 @@
 #include <types.h>
 #include <Syscall/Syscall.wtf.h>
-#include <Binding/VirtualTerminal.class.h>
+
+#include <App/Application.proto.h>
 
 #include <Heap.class.h>
 
-extern u32int start_ctors, end_ctors, start_dtors, end_dtors;
+extern u32int start_ctors, end_ctors;
 
-Heap heap;
+Heap *heap;
 
 VirtualTerminal invt(0), outvt(0);
 
 int main(const Vector<String>& args);
 
 extern "C" void start() {
-	heap.create(0x40000000, 0x00040000, 0x00004000);	//Initially create a 256ko heap with 16ko index
+	Heap h;
+	h.create(0x40000000, 0x00040000, 0x00004000);	//Initially create a 256ko heap with 16ko index
+	heap = &h;
 
-	//Call static constructors
+	//Call static constructors (this will construct the Application object and get some stuff (arguments, ...))
 	u32int i = 0;
     for(u32int * call = &start_ctors; call < &end_ctors; call++) {
         ((void (*)(void))*call)();
     }
 
-	invt = VirtualTerminal::getIn(); outvt = VirtualTerminal::getOut();
-	if (!invt.valid()) threadFinishedSyscall(1);
-	if (!outvt.valid()) threadFinishedSyscall(2);
-
-	u32int argc = Process::get().argc();
-	Vector<String> args(argc);
-	for (u32int i = 0; i < argc; i++) args[i] = Process::get().argv(i);
-
-	u32int r = main(args);
-
-	//Call static destructors 
-    for(u32int * call = &start_dtors; call < &end_dtors; call++) {
-        ((void (*)(void))*call)();
-    }
-
-	threadFinishedSyscall(r);
+	app->doEvents();
+	u32int r = app->run();
+	app->doEvents();
+	app->exit(r);	//Will call static destructors
 }
 
 namespace Mem {
-	void* alloc (size_t sz) { return heap.alloc(sz); }
-	void free(void* ptr) { heap.free(ptr); }
+	void* alloc (size_t sz) { return heap->alloc(sz); }
+	void free(void* ptr) { heap->free(ptr); }
 	void* mkXchgSpace (size_t sz) { return alloc(sz); }
 }
-- 
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