lc-switch.h File Reference

Implementation of local continuations based on switch() statement.

Author

Adam Dunkels adam@.nosp@m.sics.nosp@m..se

This implementation of local continuations uses the C switch() statement to resume execution of a function somewhere inside the function's body. The implementation is based on the fact that switch() statements are able to jump directly into the bodies of control structures such as if() or while() statements.

This implementation borrows heavily from Simon Tatham's coroutines implementation in C: http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html

Macros
#define	LC_END(s)   }
#define	LC_INIT(s)   s = 0;
#define	LC_RESUME(s)   switch(s) { case 0:
#define	LC_SET(s)   s = __LINE__; case __LINE__:

Typedefs
typedef unsigned short	lc_t