the pebble component-based operating system

... in nature to a data manager which fails to free data, but is easier to detect and prevent. • Data manager changes data. A malicious data manager may change the value of its data on each cache refresh. ... requested. The Mach kernel can only handle integral multiples of the system page size in any one call and partial pages are discarded. Since the data manager may ha...

Ngày tải lên: 12/09/2012, 15:05

... the poster of the message and the target of the message don’t have to be one and the same, they can be as shown in this snippet (read the 334 Chapter 9: Messages and Threads case MENU_ADV_HELP_MSG: ... looper and a handler). Throughout this chapter you’ll see sev- eral examples of the creating of messages and the dispatching of these messages both by t...

Ngày tải lên: 17/10/2013, 19:15

... application data member. The Save file panel, on the other hand, affects the window, and is referenced by a window data member. So I want the message sent to the window object rather than the application ... node (data). The entry can be represented by an entry_ref or a BEntry object. Currently the entry is in the form of an entry_ref. Here the entry is stored in a BEntr...

Ngày tải lên: 20/10/2013, 10:15

... another shell prompt; you can enter UNIX commands again. Previous: 1.2 Syntax of UNIX Command Lines Learning the Unix Operating System Next: 1.4 The Unresponsive Terminal 1.2 Syntax of UNIX ... Rights Reserved. The UNIX CD Bookshelf Navigation file:///C|/Documents%20and%20Settings/nmyers/Desktop/learn _unix/ index/idx_x.htm [6/30/2002 3:41:04 PM] Learning the Uni...

Ngày tải lên: 25/11/2013, 11:07

... 0); // Close the files close(infd); close(outfd); Figure 6-36. A program fragment for copying a file using the UNIX system calls. This fragment is in C because Java hides the low-level system calls ... hardware) Context Valid Physical page Virtual page tag Flags (b) (c) Format is entirely defined by the operating system Translation table (Operating system) TSB (MMU + sofwa...

Ngày tải lên: 12/12/2013, 09:15

... unimportant. 2 Chapter 1: BeOS Programming Overview to appear almost daily, and each company needs some way to ensure that the public views their product as the best. Unsurprisingly, the BeOS is also accompa- nied ... uses all of the BeOS kits, it’s a good idea to at least have an idea of the purpose of each. The kits of the BeOS are subject to change. As the Be...

Ngày tải lên: 26/01/2014, 07:20

... how the many BeIDE items are organized will be beneficial as you look at existing BeIDE example projects and as you then start to write your own BeOS program. The BeIDE Folders When the BeIDE ... File Organization • Examining an Existing BeIDE Project • Setting Up a New BeIDE Project • HelloWorld Source Code 2 2. BeIDE Projects The BeOS CD-ROM includes the BeIDE...

Ngày tải lên: 26/01/2014, 07:20

... introduction to the BeOS, each chapter describes the classes of one kit. Chapter 2 covers the classes of the Application Kit, Chapter 3 describes 80 Chapter 3: BeOS API Overview Kernel Kit The primary ... Book, double-click on the Chapter 4 document and scroll to the start of the BWindow class description. 88 Chapter 3: BeOS API Overview Overview The Overvi...

Ngày tải lên: 26/01/2014, 07:20

... character, clear the view, and draw the typed character. 120 Chapter 4: Windows, Views, and Messages With the exception of the class name and the name of the constructor, the MyDrawView class declaration ... Chapter 4: Windows, Views, and Messages 50.0). If the point (100.1, 49.9) is used instead, the result is the same the win- dow’s corner ends u...

Ngày tải lên: 26/01/2014, 07:20

... aren’t made, the state of the view’s drawing envi- ronment at the time the picture is created will be used when the picture is later drawn. The previous snippet indents the code between the BeginPicture() ... cellSide, The Drawing Pen 155 the black stripes, while changing the current low color will change the color of what are presently the white stripes. The...

Ngày tải lên: 26/01/2014, 07:20

... *buttonBeep1Name = "Beep1"; const char *buttonBeep2Name = "Beep2"; const char *buttonBeep1Label = "Beep One"; const char *buttonBeep2Label = "Beep Two"; In the ... BUTTON_BEEP_1_MSG: beep(); 222 Chapter 6: Controls and Messages Creating the Controls All of the variables that are to be used as arguments to the control constructors ar...

Ngày tải lên: 26/01/2014, 07:20

... appears to the right of the menu item. 226 Chapter 7 In this chapter: • Menu Basics • Working with Menus • Multiple Menus • Pop-up Menus • Submenus 7 Menus 7. Menus are the interface between the user ... to the left of the pop-up menu that is a part of the menu field. To omit a label, pass NULL as the label parameter. The menu parameter specifies the pop-up menu...

Ngày tải lên: 26/01/2014, 07:20

... application: BFont theFont (be_ bold_font); The BFont object theFont is a copy of the font referenced by be_ bold_font,so theFont can be modified. To do that, invoke the BFont member function appro- priate for the ... desired changes to the font and then pass these changes back to the text view object. The same applies to the text s color. The BTextView function SetFon...

Ngày tải lên: 26/01/2014, 07:20

... Interfaces l Routers and the Network Layer 2 Topics l Inside the Router Ÿ Routers are computers Ÿ Router CPU and Memory Ÿ Internetwork Operating System Ÿ Router Bootup Process Ÿ Router Ports and Interfaces Ÿ ... about the router during the bootup process (later). Inside the Router l Routers are computers l Router...

Ngày tải lên: 09/03/2014, 13:20

... open the portal. If the name server approves the access, the portal manger generates the code for the por- tal, and installs the portal in the client’s portal table. The portal number of the newly ... argument to the intercept() routine is the index of the called portal in the portal table. This routine increments the counters and then performs the required ac...

Ngày tải lên: 01/07/2014, 18:02