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One of the previous memsqueezing fixes (specifically that in
close_dctd) appears to cause the Memento fork bases squeezing
process to stop.
This appears to be because old code would do a NULL dereference
causing a SEGV. This would somehow NOT be picked up by the signal
handler, and the child would exit.
If the code is fixed to avoid the SEGV the code then somehow
goes on to do something (not in the close_dctd code) that makes
the mem squeeze process grind to a halt - but NOT in the same
instance of the executable. I am at a loss to explain this, but
would rather the code stays as it is (being as far as I can see
correct) for now.
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Rather than passing a stream to a close function, just pass context
and state - that's all that is required. This enables us to
call close to cleanup neatly if the stream fails to allocate.
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The new fz_malloc_struct(A,B) macro allocates sizeof(B) bytes using
fz_malloc, and then passes the resultant pointer to Memento_label
to label it with "B".
This costs nothing in non-memento builds, but gives much nicer
listings of leaked blocks when memento is enabled.
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Also: use 'cannot' instead of 'failed to' in error messages.
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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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Also put the function on the same line for inline functions, so
they stick out and are easy to find with grep.
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The run-together words are dead! Long live the underscores!
The postscript inspired naming convention of using all run-together
words has served us well, but it is now time for more readable code.
In this commit I have also added the sed script, rename.sed, that I used
to convert the source. Use it on your patches and application code.
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make all occurances of the code follow a common idiom.
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