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R=brucedawson@chromium.org
Review URL: https://codereview.chromium.org/837533003
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PDFium static initializers must go. Static initializers are prohibited
by the style guide. They have negative consequences including increased
startup time (from pulling in additional code pages) and reduced sharing
of data pages (since the variables can't go in the read-only data
segment).
This change uses a template struct and typed enums to reproduce
JS_CalcHash at run-time. An unsigned long long constant and masking with
0xFFFFFFFF are used to avoid compile errors due to integer overflow of
compile-time constants.
The HashVerify class is used to check the results, necessary since none
of the functions in global.cpp are called when pdfium_test.exe runs.
const_expr would be a much cleaner way to implement this change but it
is not yet widely supported.
On the Windows release build this reduces the code size (.text
virtual size) by 0x240 (576) bytes, the .data section by 0x20 bytes
(for eight unsigned globals), and the .rdata section by 0x20 bytes
(the unneeded string savings, minus the eight unsigned globals now
being there).
BUG=441899
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/792043005
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m_sTimeMap is a global variable with a constructor and destructor, which
is not allowed. This change moves it to a function with a static pointer
so that it is constructed on demand and then leaked, thus avoiding
having startup and shutdown code.
This also fixes a worrisome bug caused by having m_sTimeMap defined in
a header file. Because m_sTimeMap was defined (and marked as static) in
a header file there were fifteen separate copies of it, one for each
source file which included the header file. This could easily lead to
bugs because a timer that was added from one source file would be
invisible to other source files.
Each instance of m_sTimeMap added four entries to the
dump-static-initializers.py report, for a total of sixty, so this fix
significantly cleans up that report.
BUG=441899
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/831903002
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Follow up on https://codereview.chromium.org/733693003
R=brucedawson@chromium.org, tsepez@chromium.org
Review URL: https://codereview.chromium.org/809993004
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QeTable is a 752 byte array that was defined in a header file. This
caused it to be instantiated by the VC++ compiler 12 times, wasting
8,272 bytes of space in the data segment. Because 'const' implies
'static' this did not cause any duplicate symbol errors.
JSCONST_n*HASH are a set of eight variables that are defined in a header
file. This causes them to be replicated 15 times. The variables
themselves are tiny but they are dynamically initialized and this
dynamic initialization code is replicated 15 times.
When tested on pdfium_test.exe the effect of this change is to:
Reduce the .text (code) segment by 3,616 bytes.
Reduce the .rdata section by 8,656 bytes.
Reduce the total binary file size by 13312 bytes.
These are the worst offenders for pdf.dll as shown in:
https://drive.google.com/open?id=1BvubxoA2SU_2e4T5cq7jHTjc1TlT0qOndpIfX3DMeA8&authuser=0
This will also drastically simplify the list of work to be done
for bug 441899 (getting rid of initializers).
BUG=441988
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/802013002
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-remove parameter from FPDF_InitLibrary
-remove a bunch of ifdefs that are unused
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/801913002
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FX_ArraySize macro.
pdfium has numerous places where the number of elements in an array is
calculated with expressions like:
sizeof(cFormats)/sizeof(FX_LPCWSTR)
This is suboptimal because it is verbose, it is easy to get wrong, and
it cannot be determined through casual inspection whether the code is
correct. It will give incorrect results if cFormats is a pointer instead
of an array and it will give incorrect results if FX_LPCWSTR is not the
type of the array elements.
The FX_WSTRC macro in fx_string.h which I fixed was particularly scary
because it would silently misbehave if passed a pointer.
The FX_ArraySize macro which I have added and started using (taken from
arraysize in v8's macros.h) is easier to use and will always give correct
results. If passed a pointer it will fail to compile.
For this change I only fixed instances of sizeof(FX_LPCWSTR). There
appear to be about 150 other places in the pdfium code that could
benefit from using FX_ArraySize.
R=bo_xu@foxitsoftware.com, tsepez@chromium.org
Review URL: https://codereview.chromium.org/729293003
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Since casts to FX_LPCWSTR have been shown to hide bugs I tried removing
more of them, targeting those places where a cast was used to force a
conversion from CFX_WideString to FX_LPCWSTR, replacing these casts with
calls to the newly added .c_str() function. This revealed two places
where the cast was hiding a bug -- where ->c_str() was required instead!
This removes ~33 FX_LPCWSTR casts and there are ~31 left, many of which
will go away in some future change.
Also includes this change:
Removing unnecessary casts from wchar_t* to wchar_t*, by various names.
Original patch from Bruce Dawson(brucedawson@chromium.org)
R=bo_xu@foxitsoftware.com, tsepez@chromium.org
Review URL: https://codereview.chromium.org/733693003
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Remove casts that merely cast from wchar_t* to wchar_t*. Sometimes the
types or casts are FX_LPCWSTR but the idea is the same. Excess casts
can (and have) hidden bugs so removing these may prevent future problems.
Original patch from Bruce Dawson(brucedawson@chromium.org)
R=bo_xu@foxitsoftware.com, tsepez@chromium.org
Review URL: https://codereview.chromium.org/730993002
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BUG=https://code.google.com/p/pdfium/issues/detail?id=78
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/726143002
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Found by VC++'s /analyze. Warning was:
fpdfsdk\src\javascript\js_runtime.cpp(352) : warning C6276:
Cast between semantically different string types: char * to wchar_t *.
Use of invalid string can lead to undefined behavior.
This mismatch has been there as far back as the history goes (to May of this year).
It looks like a real bug to me. However I don't know the implications of this bug and why it would not have been noticed at run-time.
The code has been this way as far back as the git history goes, but that is only to May 2014.
Original patch from Bruce Dawson(brucedawson@chromium.org)
BUG=427616
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/705503004
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BUG=425129
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/688303003
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BUG=none
R=jam@chromium.org
Review URL: https://codereview.chromium.org/581413002
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app::response().
I also clean up the code while we are here, rewriting a strange switch statement and tidying whitespace.
BUG=406142
R=jun_fang@foxitsoftware.com
Review URL: https://codereview.chromium.org/498773004
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BUG=pdfium:28
R=thakis@chromium.org
Review URL: https://codereview.chromium.org/472563002
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No intended behavior change.
BUG=pdfium:29
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/436483002
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No intended behavior change.
BUG=pdfium:29
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/426763003
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No intended behavior change.
BUG=pdfium:29
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/426763004
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Follow-up from https://codereview.chromium.org/424883002/
- Remove some stray whitespace.
- Fix "else after return".
- Remove unused swResponse local.
- Treat unexpectedly large responses as errors.
BUG=
R=jun_fang@foxitsoftware.com
Review URL: https://codereview.chromium.org/423953002
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No intended behavior change.
- Remove more unused variables, functions, member variables.
- Put a few constructor initializers in the order they execute in.
- Add braces for subobject initializers.
- Fix a handful of signed / unsigned comparisons.
BUG=pdfium:29
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/429593005
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BUG=395266
R=jun_fang@foxitsoftware.com
Review URL: https://codereview.chromium.org/411713003
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BUG=396255
R=jun_fang@foxitsoftware.com
Review URL: https://codereview.chromium.org/407243003
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The function is looking ahead N characters at both its "format" and "value"
strings without validating that accesses are in bounds. Add those validations.
There are also duplicate checks in the else-branches which re-test the inverse
of the if-branch. These are removed for simplicity.
I also tidied some stray whitespace in the function while I was at it.
BUG=393831
R=jun_fang@foxitsoftware.com
Review URL: https://codereview.chromium.org/395303004
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It remains to call the PumpMessageLoop() method at a regular interval,
however, since nothing posts to the loop yet, that shouldn't be a
problem.
BUG=25
R=jam@chromium.org
Review URL: https://codereview.chromium.org/374123002
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BUG=381521
R=palmer@chromium.org
Review URL: https://codereview.chromium.org/383563002
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We'll use this for integer overflows going forward.
BUG=382606
R=jam@chromium.org
Review URL: https://codereview.chromium.org/349363005
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This reverts commit d9713f05fdcecab8428d39034c6b84cd0bbd2920.
This is breaking compile.
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We'll use this for integer overflows going forward.
BUG=382606
R=bo_xu@foxitsoftware.com, jschuh@chromium.org
Review URL: https://codereview.chromium.org/341533007
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of file" warning.
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into errors. It also makes it clearer to find usage of v8 in the library.
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