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Inter process communication library developed as part of the module 'operating systems' at UAS Münster

License: BSD 2-Clause "Simplified" License

Dockerfile 0.33% Makefile 6.31% C 93.36%

libosmp's Introduction

Betriebssysteme Praktikum von Daniel Knüppe

Ordnerübersicht

  • osmpclient enthält eine Beispielimplementation für die Nutzung der Bibliothek
  • osmplib enthält die Bibliothek selbst
  • osmprun enthält den Prozessmanager
  • testsuite enthält Programme zum testen der Bibliotheksfunktionen

Speicherlayout

Das Speicherlayout besteht aus zwei Teilen, dem statischen und dem dynamischen. Im statischen Teil stehen Infos und Speicherbereich zur verfügung, welche unabhängig von der Anzahl der zu startenden Prozesse sind. Im dynamischen Teil befindet sich ein Prozess Kontroll Block pro zu startenden Prozess.

typedef struct {
    size_t shm_size;
    unsigned int num_proc;
    OSMP_msg_node messages[OSMP_MAX_SLOTS];
    OSMP_queue empty_list;
} OSMP_base;

typedef struct {
    OSMP_queue inbox;
    pid_t pid;
} OSMP_pcb;

libosmp's People

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