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Nat Goodspeed 464a0df4c1 DRTVWR-418: Unify control flow through LLAppViewer across platforms.
The LLApp API used to consist of init(), mainLoop(), cleanup() methods. This
makes sense -- but on Mac that structure was being subverted. The method
called mainLoop() was in fact being called once per frame. There was
initialization code in the method, which (on Mac) needed to be skipped with an
already-initialized bool. There was a 'while' loop which (on Mac) needed to be
turned into an 'if' instead so the method would return after every frame.

Rename LLApp::mainLoop() to frame(). Propagate through subclasses LLAppViewer
and LLCrashLogger. Document the fact that frame() returns true to mean "done."
(This was always the case, but had to be inferred from the code.)

Rename the Mac Objective-C function mainLoop to oneFrame. Rename the C++ free
function it calls from runMainLoop() to pumpMainLoop(). Add comments to
llappdelegate-objc.mm explaining (inferred) control flow.

Change the Linux viewer main() and the Windows viewer WINMAIN() from a single
LLAppViewer::mainLoop() call to repeatedly call frame() until it returns true.

Move initialization code from the top of LLAppViewer::frame() to the init()
method, where it more properly belongs. Remove corresponding
mMainLoopInitialized flag (and all references) from LLAppViewer.

Remove 'while (! LLApp::isExiting())' (or on Mac, 'if (! LLApp::isExiting())')
from LLAppViewer::frame() -- thus unindenting the whole body of the 'while'
and causing many lines of apparent change. (Apologies to reviewers.)

There are four LLApp states: APP_STATUS_RUNNING, APP_STATUS_QUITTING,
APP_STATUS_STOPPED and APP_STATUS_ERROR. Change LLAppViewer::frame() return
value from (isExiting()) (QUITTING or ERROR) to (! isRunning()). I do not know
under what circumstances the state might transition to STOPPED during a
frame() call, but I'm quite sure that if it does, we don't want to call
frame() again. We only want a subsequent call if the state is RUNNING.

Also rename mainLoop() method in LLCrashLogger subclasses
LLCrashLoggerWindows, LLCrashLoggerMac, LLCrashLoggerLinux. Of course it's
completely up to the frame() method whether to yield control; none of those in
fact do. Honor protocol by returning true (frame() is done), even though each
one's main() caller ignores the return value.

In fact LLCrashLoggerWindows::mainLoop() wasn't using the return protocol
correctly anyway, returning wParam or 0 or 1 -- possibly because the return
protocol was never explicitly documented. It should always return true: "I'm
done, don't call me again."
2016-06-30 16:51:50 -04:00
debian try to suppress some debian errors we don't care about 2015-11-10 09:55:05 -05:00
doc merge 4.0.4-release and MAINT-5974 2016-05-06 10:28:42 -04:00
etc Update Mac and Windows breakpad builds to latest 2013-03-29 07:50:08 -07:00
indra DRTVWR-418: Unify control flow through LLAppViewer across platforms. 2016-06-30 16:51:50 -04:00
scripts make the About... / Licenses tab more readable by adding blank lines 2016-04-20 17:51:30 -04:00
.hgignore merge changes for 3.7.29-release 2015-06-08 16:33:02 -04:00
.hgtags Added tag 4.0.5-release for changeset 450de775fff6 2016-05-19 10:24:24 -07:00
BuildParams disable additional_packages for Linux in the BuildParams 2016-04-19 10:00:25 -04:00
README.md spruce up the README (I needed a change to force a new build number) 2016-04-22 14:00:46 -04:00
autobuild.xml various changes required to compile on new clang 2016-05-05 13:53:07 -04:00
build.sh allow warnings from autobuild 2016-04-26 09:46:31 -04:00

README.md

Second Life Viewer

This project manages the source code for the Second Life Viewer.

This source is available as open source; for details on licensing, see the licensing page on the Second Life wiki

For information on how to use and contribute to this, see the open source portal on the wiki.

To download the current default version, visit the download page. For even newer versions try the Alternate Viewers page