Changeset 20504 in vbox for trunk/src

Timestamp:

Jun 12, 2009 11:39:23 AM (16 years ago)

Author:

vboxsync

Message:

SUPDrvIOC.h: some hints.

File:

trunk/src/VBox/HostDrivers/Support/SUPDrvIOC.h

-              r20338
+              r20504
  * The upper 16-bit is the major version, the the lower the minor version.
  * When incompatible changes are made, the upper major number has to be changed.
+ *
+ * Update rules:
+ *  -# Only update the major number when incompatible changes has been made.
+ *  -# When adding new features (new IOC number, new flags, new exports, ++)
+ *     only update the minor number and change SUPLib.cpp to require the
+ *     new IOC version.
+ *  -# When incrementing the major number, clear the minor part and reset
+ *     any IOC version requirements in SUPLib.cpp.
+ *
  * @todo Pending work on next major version change:

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