Rewrite and activate message passing by area. Passing by area works now with

the new sematic of transfer_area so a message area is transfered into the right
teams' address space and it does not need to be cloned there anymore. Passing
by area is only used for messages bigger than a certain size (currently
hardcoded to 40KB) which should be somehow bound to the max port message size.
This makes passing large messages (i.e. > the port limit) possible, so for
example copy&paste of long text, image data, etc. should now work.
Got rid of the fClonedArea member as it is not necessary with the new design,
renamed shared_area to message_area in the private message_header, avoid
an unnecessary allocation of the header for the copy constructors, check
allocations in a few more places and some minor cleanup.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24321 a95241bf-73f2-0310-859d-f6bbb57e9c96

This commit is contained in:

Michael Lotz

2008-03-09 13:35:41 +00:00

parent d1189f0b05

commit a433b9febf

3 changed files with 118 additions and 70 deletions

									
										headers/private/app/MessagePrivate.h
									
		+1
		-1
	
												View File
												
				@@ -68,7 +68,7 @@ struct BMessage::message_header {

					int32		target;

					int32		current_specifier;

					area_id		shared_area;

					area_id		message_area;

					// reply info

					port_id		reply_port;