disastrOS_constants.h

#pragma once

#define MAX_NUM_PROCESSES 1024
#define MAX_NUM_RESOURCES 1024
#define MAX_NUM_SEMAPHORES 1024
#define MAX_NUM_MQS 16
#define MAX_NUM_QUEUES 64
#define MAX_NUM_MESSAGES 128
#define MAX_NUM_MESSAGES_PER_MQ 128
#define MAX_MESSAGE_LENGTH 32
#define MAX_NUM_RESOURCES_PER_PROCESS 32
#define MAX_NUM_DESCRIPTORS_PER_PROCESS 32
#define MAX_NUM_SEMAPHORES_PER_PROCESS 32
#define MAX_NUM_SEMDESCRIPTORS_PER_PROCESS 32
#define MAX_NUM_MQ_PER_PROCESS 4
#define MAX_NUM_MQDESCRIPTORS_PER_PROCESS 16

#define STACK_SIZE 16384
// signals
#define MAX_SIGNALS 32
#define DSOS_SIGCHLD 0x1
#define DSOS_SIGHUP 0x2

// errors
#define DSOS_ESYSCALL_ARGUMENT_OUT_OF_BOUNDS -1
#define DSOS_ESYSCALL_NOT_IMPLEMENTED -2
#define DSOS_ESYSCALL_OUT_OF_RANGE -3
#define DSOS_EFORK -4
#define DSOS_EWAIT -5
#define DSOS_ESPAWN -6
#define DSOS_ESLEEP -7
#define DSOS_ERESOURCECREATE -8
#define DSOS_ERESOURCEOPEN -9
#define DSOS_ERESOURCENOEXCL -10
#define DSOS_ERESOURCENOFD -11
#define DSOS_ERESOURCECLOSE -12
#define DSOS_ERESOURCEINUSE -13

#define DSOS_ESEMAPHOREOPEN -14
#define DSOS_ESEMAPHORECLOSE -15
#define DSOS_ESEMAPHOREPOST -16
#define DSOS_ESEMAPHOREWAIT -17

#define DSOS_EMQOPEN -18
#define DSOS_EMQCLOSE -19
#define DSOS_EMQREAD -20
#define DSOS_EMQWRITE -21
#define DSOS_EMQUNLINK -22

// syscall numbers
#define DSOS_MAX_SYSCALLS 32
#define DSOS_MAX_SYSCALLS_ARGS 8
#define DSOS_CALL_PREEMPT 1
#define DSOS_CALL_FORK 2
#define DSOS_CALL_WAIT 3
#define DSOS_CALL_EXIT 4
#define DSOS_CALL_SPAWN 5
#define DSOS_CALL_SLEEP 6
#define DSOS_CALL_OPEN_RESOURCE 7
#define DSOS_CALL_CLOSE_RESOURCE 8
#define DSOS_CALL_DESTROY_RESOURCE 9
#define DSOS_CALL_SHUTDOWN 10
#define DSOS_CALL_SEMOPEN 11
#define DSOS_CALL_SEMCLOSE 12
#define DSOS_CALL_SEMWAIT 13
#define DSOS_CALL_SEMPOST 14
#define DSOS_CALL_MQOPEN 15
#define DSOS_CALL_MQCLOSE 16
#define DSOS_CALL_MQREAD 17
#define DSOS_CALL_MQWRITE 18
#define DSOS_CALL_MQUNLINK 19

// resources
#define DSOS_CREATE 0x1
#define DSOS_READ 0x2
#define DSOS_WRITE 0x3
#define DSOS_EXCL 0x4

// scheduling
#define ALPHA 0.5f
#define INTERVAL 100  // milliseconds for timer tick