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Change the fz_store to be limited to 256 Megs. Remove the soft limit
for pixmaps; the store will automatically throw old resources away
to stay below the limit.
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Firstly, we rename pdf_store to fz_store, reflecting the fact that
there are no pdf specific dependencies on it.
Next, we rework it so that all the objects that can be stored in
the store start with an fz_storable structure. This consists of
a reference count, and a function used to free the object when
the reference count reaches zero.
All the keep/drop functions are then reimplemented by calling
fz_keep_sharable/fz_drop_sharable. The 'drop' functions as supplied
by the callers are thus now 'free' functions, only called if
the reference count drops to 0.
The store changes to keep all the items in the store in the linked
list (which becomes a doubly linked one). We still make use of
the hashtable to index into this list quickly, but we now have
the objects in an LRU ordering within the list.
Every object is put into the store, with a size record; this is
an estimate of how much memory would be freed by freeing that
object.
The store is moved into the context and given a maximum size;
when new things are inserted into the store, care is taken to
ensure that we do not expand beyond this size. We evict any
stored items (that are not in use) starting from the least
recently used.
Finding an object in the store now takes a reference to it already.
LOCK and UNLOCK comments are used to indicate where locks need to
be taken and released to ensure thread safety.
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Update pdfclean with some new decompression options; -d changes it's
definition (though not it's behaviour) to mean "decompress all
streams".
New flags, -i and -f toggle the decompression of image and font streams
respectively.
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Also: use 'cannot' instead of 'failed to' in error messages.
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Remove use of 'die', in place of proper exception handling.
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At some point I'd mismerged some code for handling app->doctitle,
resulting in app->doctitle pointing to something that's not a heap
block. This caused an error when app->doctitle was freed at closedown.
Remove the offending code and all is well.
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In builds that support configurable layers of antialiasing, move
the variables that control this into the context. This makes it
possible to safely use different levels of antialiasing in different
threads.
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Take on a (cosmetically tweaked) version of Zenikos patch to allow
pdfclean to keep link destinations that are in preserved pages.
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Encryption bakes the object numbers into the strings/streams. This
means that our renumbering technique falls down; when we move an
object to its new position, then come to read it, we find that it
decrypts badly.
The fix here is (as suggested by Zeniko) to avoid renumbering
when encryption is in use.
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Mostly redoing the xps_context to xps_document change and adding
contexts to newly written code.
Conflicts:
apps/pdfapp.c
apps/pdfapp.h
apps/x11_main.c
apps/xpsdraw.c
draw/draw_device.c
draw/draw_scale.c
fitz/base_object.c
fitz/fitz.h
pdf/mupdf.h
pdf/pdf_interpret.c
pdf/pdf_outline.c
pdf/pdf_page.c
xps/muxps.h
xps/xps_doc.c
xps/xps_xml.c
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Signed-off-by: Sebastian Rasmussen <sebras@gmail.com>
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Based on a patch by Zhihao Yuan <lichray@gmail.com>.
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Based on a patch by Zhihao Yuan <lichray@gmail.com>.
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This was removed during a previous commit to make the editing easier.
Now added back in.
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This frees us from passing errors back everywhere, and hence enables us
to pass results back as return values.
Rather than having to explicitly check for errors everywhere and bubble
them, we now allow exception handling to do the work for us; the
downside to this is that we no longer emit as much debugging information
as we did before (though this could be put back in). For now, the
debugging information we have lost has been retained in comments
with 'RJW:' at the start.
This code needs fuller testing, but is being committed as a work in
progress.
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Huge pervasive change to lots of files, adding a context for exception
handling and allocation.
In time we'll move more statics into there.
Also fix some for(i = 0; i < function(...); i++) calls.
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Import exception handling code from WSS, modified to fit into the
fitz world.
With this code we have 'real' fz_try/fz_catch/fz_rethrow functions,
handling a fz_except type. We therefore rename the existing fz_throw/
fz_catch/fz_rethrow to be fz_error_make/fz_error_handle/fz_error_note.
We don't actually use fz_try/fz_catch/fz_rethrow yet...
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Searching backwards in the document for a non-existing string
resulted in the window being redrawn with no document. Until
next repaint, at which point the window was redrawn again this
time with the document present.
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