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static WvCont | current () |
| Get a copy of the current WvCont.
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static void * | yield (void *ret=0) |
| "return" from the current callback, giving value 'ret' to the person who called us.
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static bool | isok () |
| Tell us if the current context is "okay", that is, not trying to die.
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template<typename R , typename T > |
static R | c_bouncer (T t, void *_cont) |
| A templated function that allows you to pass a WvCont wherever a C-style function pointer of the form R func(T, void *userdata) is taken.
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template<typename R > |
static R | c_bouncer (void *_cont) |
| A templated function that allows you to pass a WvCont wherever a C-style function pointer of the form R func(void *userdata) is taken.
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WvCont provides "continuations", which are apparently also known as semi-coroutines.
You can wrap any WvCallback<void*,void*> in a WvCont and make it a "continuable" callback - that is, you can yield() from it and return a value. Next time someone calls your callback, it will be as if yield() has returned (and the parameter to your function is returned from yield()).
Definition at line 29 of file wvcont.h.
Tell us if the current context is "okay", that is, not trying to die.
If !isok(), you shouldn't yield(), because the caller is just going to keep calling you until you die. Return as soon as you can.
Definition at line 238 of file wvcont.cc.
Referenced by current(), and yield().
template<typename R , typename T >
static R WvCont::c_bouncer |
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void * |
_cont |
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inlinestatic |
A templated function that allows you to pass a WvCont wherever a C-style function pointer of the form R func(T, void *userdata) is taken.
It's your job to make sure the 'userdata' provided is a pointer to the right WvCont.
Example: typedef bool MyFunc(Obj *obj, void *userdata); WvCont cont; MyFunc *func = &WvCont::c_bouncer<bool,Obj *>; bool b = func(new Obj, &cont);
Definition at line 131 of file wvcont.h.