In #5399 it was noticed, that IPC_Mode isn't being used within SystemV
IPC procedures, even though it was designed this way, which lead to a
weird API where in order to call SystemV IPC procedures multiple
transmutes and a bitwise-OR are needed.
This unifies IPC_Mode and IPC_Flags bitsets, making it possible to call
the SystemV IPC procedures without extra casts, and rearranges the flags
in a way that hopefully makes it easier to see when they are not
colliding and should not be mixed. The explanation, explaining this
arrangement of the enum was added.
The IPC_Perm structure is modified, so that the flags can be re-used
between the calls. It's probably not as good as keeping them separate,
but should work... hopefully.
Kept the "old" style of documentation for consistency.
Signed-off-by: Sunagatov Denis <thebumboni@gmail.com>
When trying to grab the window pointer off the notification in a
windowDidBecomeKey implementation, I kept getting segfaults calling
notification->object(). The second argument of these needs to be a SEL.
https://developer.apple.com/documentation/objectivec/class_addmethod(_:_:_:_:)?language=objc#Discussion
I imagine existing code is getting by by setting the window information
in the delegate's context userdata, which works fine when you only have
one window as you can avoid needing to call notification->object(),
until you want one delegate assigned to two windows, hard to work around.
Fixes#5151
- Removes `SHARED_VALIDATE` from the enum and turns it into `Map_Shared_Validate :: Map_Flags{.SHARED, .PRIVATE}` so it has the proper value of 0x03.
- Adds `DROPPABLE`.
- Adds constants `MAP_HUGE_SHIFT` and `MAP_HUGE_MASK`.
- Adds the huge page precomputed constants from `mman.h`, defined as the log2 of the size shifted left by `MAP_HUGE_SHIFT`:
Map_Huge_16KB
Map_Huge_64KB
Map_Huge_512KB
Map_Huge_1MB
Map_Huge_2MB
Map_Huge_8MB
Map_Huge_16MB
Map_Huge_32MB
Map_Huge_256MB
Map_Huge_512MB
Map_Huge_1GB
Map_Huge_2GB
Map_Huge_16GB
