sysdep.h

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#ifndef SYSDEP_H
#define SYSDEP_H

#include "copyright.h"

// Check file to see if there are any characters to be read.
// If no characters in the file, return without waiting.
extern bool PollFile(int fd);

// File operations: open/read/write/lseek/close, and check for error
// For simulating the disk and the console devices.
extern int OpenForWrite(const char *name);
extern int OpenForReadWrite(const char *name, bool crashOnError);
extern void Read(int fd, char *buffer, int nBytes);
extern int ReadPartial(int fd, char *buffer, int nBytes);
extern void WriteFile(int fd, const char *buffer, int nBytes);
extern void Lseek(int fd, int offset, int whence);
extern int Tell(int fd);
extern void Close(int fd);
extern bool Unlink(const char *name);

// Interprocess communication operations, for simulating the network
extern int OpenSocket();
extern void CloseSocket(int sockID);
extern void AssignNameToSocket(const char *socketName, int sockID);
extern void DeAssignNameToSocket(const char *socketName);
extern bool PollSocket(int sockID);
extern void ReadFromSocket(int sockID, char *buffer, int packetSize);
extern void SendToSocket(int sockID, const char *buffer, int packetSize, const char *toName);

extern void Abort();
extern void Exit(int exitCode);
extern void Delay(int seconds);

extern void CallOnUserAbort(VoidNoArgFunctionPtr cleanUp);

extern void RandomInit(unsigned seed);
extern int Random();

extern char *AllocBoundedArray(int size);
extern void DeallocBoundedArray(char *p, int size);

#include <stdlib.h>             // for atoi, atof, abs
#include <stdio.h>      // for printf, fprintf
#include <string.h>     // for DEBUG, etc.

#endif // SYSDEP_H