CONTENTS Title Page Copyright Page Preface 1 General 2 Definitions and General Requirements 3 Binary Semaphores 4 Process Memory Locking 5 Memory Mapped Files and Shared Memory 6 Priority Scheduling 7 Realtime Signals Extension 8 Clocks and Timers 9 IPC Message Passing 10 Synchronized Input and Output 11 Asynchronous Input and Output 12 Realtime Files 13 Language-Specific Requirements 14 Extensions to POSIX.1