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accessed through the static LLThread::tldata().
Currently this object contains two (public) thread-local
objects: a LLAPRRootPool and a LLVolatileAPRPool.
The first is the general memory pool used by this thread
(and this thread alone), while the second is intended
for short lived memory allocations (needed for APR).
The advantages of not mixing those two is that the latter
is used most frequently, and as a result of it's nature
can be destroyed and reconstructed on a "regular" basis.
This patch adds LLAPRPool (completely replacing the old one),
which is a wrapper around apr_pool_t* and has complete
thread-safity checking.
Whenever an apr call requires memory for some resource,
a memory pool in the form of an LLAPRPool object can
be created with the same life-time as this resource;
assuring clean up of the memory no sooner, but also
not much later than the life-time of the resource
that needs the memory.
Many, many function calls and constructors had the
pool parameter simply removed (it is no longer the
concern of the developer, if you don't write code
that actually does an libapr call then you are no
longer bothered with memory pools at all).
However, I kept the notion of short-lived and
long-lived allocations alive (see my remark in
the jira here: https://jira.secondlife.com/browse/STORM-864?focusedCommentId=235356&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-235356
which requires that the LLAPRFile API needs
to allow the user to specify how long they
think a file will stay open. By choosing
'short_lived' as default for the constructor
that immediately opens a file, the number of
instances where this needs to be specified is
drastically reduced however (obviously, any
automatic LLAPRFile is short lived).
***
Addressed Boroondas remarks in https://codereview.secondlife.com/r/99/
regarding (doxygen) comments. This patch effectively only changes comments.
Includes some 'merge' stuff that ended up in llvocache.cpp
(while starting as a bug fix, now only resulting in a cleanup).
***
Added comment 'The use of apr_pool_t is OK here'.
Added this comment on every line where apr_pool_t
is correctly being used.
This should make it easier to spot (future) errors
where someone started to use apr_pool_t; you can
just grep all sources for 'apr_pool_t' and immediately
see where it's being used while LLAPRPool should
have been used.
Note that merging this patch is very easy:
If there are no other uses of apr_pool_t in the code
(one grep) and it compiles, then it will work.
***
Second Merge (needed to remove 'delete mCreationMutex'
from LLImageDecodeThread::~LLImageDecodeThread).
***
Added back #include <apr_pools.h>.
Apparently that is needed on libapr version 1.2.8.,
the version used by Linden Lab, for calls to
apr_queue_*. This is a bug in libapr (we also
include <apr_queue.h>, that is fixed in (at least) 1.3.7.
Note that 1.2.8 is VERY old. Even 1.3.x is old.
***
License fixes (GPL -> LGPL). And typo in comments.
Addresses merov's comments on the review board.
***
Added Merov's compile fixes for windows.
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locate memory leaking
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names in other classes
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chunk to the tail of the linked list so new allocations go to oldest chunks first.
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Turns out that most of my SNOW-800 patch was included in Viewer 2 (albeit without crediting me).
However, not everything was used and some more cleaning up was possible.
After this patch, and when compiling with optimization, there are no duplicates left
anymore that shouldn't be there in the first place. Apart from the debug stream
iostream guard variable, there are several static variables with the same name (r, r1,
r2, etc) but that indeed actually different symbol objects. Then there are a few
constant POD arrays that are duplicated a hand full of times because they are
accessed with a variable index (so optimizing them away is not possible). I left them
like that (although defining those as extern as well would have been more consistent
and not slower; in fact it would be faster theoretically because those arrays could
share the same cache page then).
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In addition to its usual apr_sterror() function, APR defines a special
function specifically for errors relating to the apr_dso_*() functions.
Introduce ll_apr_warn_status() and ll_apr_assert_status() overloads accepting
apr_dso_handle_t* to call apr_dso_error() as well as apr_strerror() and log
its output. Use new ll_apr_warn_status() in LLAppViewer::loadEventHostModule()
for apr_dso_load() and apr_dso_sym() calls. Instead of shorthand
ll_apr_assert_status(), use with llassert_always() so check is still performed
even in Release build.
Add more lleventhost-related debugging output, e.g. full pathname of the DLL.
On Mac and Linux, call 'file' command to report nature of the DLL too.
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--args which is 10.6 only. Also fix erroneous check in process launcher which was mistakenly reporting a failed execution of the new updater script.
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The bundle ID is found in llversionviewer.h, Info-SecondLife.plist and
mac_updater.cpp. The latter two state it as "com.secondlife.indra.viewer".
llversionviewer.h stated it as "com.secondlife.snowglobe.viewer". Changing it
to "indra" to be consistent. For further discussion, please see the Jira.
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The TextureFetch thread was still stalling out due to
a different path that determines whether there is work
or not in the thread (uses getPending()) and that had
to be harmonized with the changes to runCondition().
I'm not happy with this solution but a refactor of the
LLThread tree isn't in the cards right now.
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metrics, will disable later.
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