On 01/26/2011 09:29 AM, Avi Kivity wrote:
On 01/22/2011 11:29 AM, Stefan Hajnoczi wrote:
Add functions to create coroutines and transfer control into a coroutine
and back out again.
+
+struct Coroutine {
+ struct coroutine co;
+};
+
+/**
+ * Coroutine entry point
+ *
+ * When the coroutine is entered for the first time, opaque is
passed in as an
+ * argument.
+ *
+ * When this function returns, the coroutine is destroyed
automatically and the
+ * return value is passed back to the caller who last entered the
coroutine.
+ */
+typedef void * coroutine_fn CoroutineEntry(void *opaque);
The more modern style is to use the Coroutine structure as argument,
and let the coroutine function use container_of() to obtain access to
its own data structures. Similarly it can store any return value
there, avoiding casts to and from void pointers.
This is old (shared) code from other projects. My plan is to split into
a separate library instead of actually including this in QEMU.
Regards,
Anthony Liguori
