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qlock.h

qlock.h 474 B
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  1. #ifndef __QLOCK_H_
    2. 

  2. #define __QLOCK_H
    3. 

  3. #ifndef _QLOCK_EXTENSION
    4. 

  4.   This header file is an extension to ANSI/POSIX
    5. 

  5. #endif
    6. 

  6. #pragma lib "/$M/lib/ape/lib9.a"
    7. 

  7. 

  8. typedef struct QLp QLp;
    9. 

  9. struct QLp
    10. 

  10. {
    11. 

  11. 	int	inuse;
    12. 

  12. 	QLp	*next;
    13. 

  13. 	char	state;
    14. 

  14. };
    15. 

  15. 

  16. typedef
    17. 

  17. struct QLock
    18. 

  18. {
    19. 

  19. 	Lock	lock;
    20. 

  20. 	int	locked;
    21. 

  21. 	QLp	*head;
    22. 

  22. 	QLp 	*tail;
    23. 

  23. } QLock;
    24. 

  24. 

  25. #ifdef __cplusplus
    26. 

  26. extern "C" {
    27. 

  27. #endif
    28. 

  28. 

  29. extern	void	qlock(QLock*);
    30. 

  30. extern	void	qunlock(QLock*);
    31. 

  31. extern	int	canqlock(QLock*);
    32. 

  32. #ifdef __cplusplus
    33. 

  33. }
    34. 

  34. #endif
    35. 

  35. 

  36. #endif
    37.