Local continuations
[Pt]

Collaboration diagram for Local continuations:

Files
file	lc-addrlabels.h
file	lc-switch.h
file	lc.h
Defines
#define	LC_INIT(s)   s = NULL
#define	LC_RESUME(s)
#define	LC_SET(s)   do { ({ __label__ resume; resume: (s) = &&resume; }); }while(0)
#define	LC_END(s)
#define	__LC_SWTICH_H__
#define	LC_INIT(s)   s = 0;
#define	LC_RESUME(s)   switch(s) { case 0:
#define	LC_SET(s)   s = __LINE__; case __LINE__:
#define	LC_END(s)   }
Typedefs
typedef void *	lc_t
typedef unsigned short	lc_t

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Detailed Description

Local continuations form the basis for implementing protothreads. A local continuation can be set in a specific function to capture the state of the function. After a local continuation has been set can be resumed in order to restore the state of the function at the point where the local continuation was set.

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Define Documentation

#define __LC_SWTICH_H__

#define LC_END

(

s

)

}

#define LC_END

(

s

)

#define LC_INIT

(

s

)

s = 0;

#define LC_INIT

(

s

)

s = NULL

#define LC_RESUME

(

s

)

switch(s) { case 0:

#define LC_RESUME

(

s

)

Value:

do {                                          \
    if(s != NULL) {                             \
      goto *s;                                  \
    }                                           \
  } while(0)

#define LC_SET

(

s

)

s = __LINE__; case __LINE__:

#define LC_SET

(

s

)

do { ({ __label__ resume; resume: (s) = &&resume; }); }while(0)

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Typedef Documentation

typedef unsigned short lc_t

typedef void* lc_t