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pngcp: add high resolution timing

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If PNG_PNGCP_TIMING_SUPPORTED is defined maximal resolution CPU time logging of
png_read_png and png_write_png is enabled via the --time command line option.
This is not on by default but is enabled by contrib/conftests/pngcp.dfa

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2016-06-30 23:24:24 -07:00
parent 0ac91cc657
commit 9957c45073
2 changed files with 200 additions and 22 deletions
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11
contrib/conftest/pngcp.dfa
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@@ -13,6 +13,17 @@
#
everything = off
# This option is specific to this configuration; it adds a #define to the
# generated pnglibconf.h which turns on the (not portable) timing option for
# pngcp. Note that any option is automatically preceded by PNG_; there is no
# way round this and this is deliberate.
option PNGCP_TIMING
# Because of the everything off above the option must also be turned on. This
# may not be done in one step because it is safer and avoids mis-spelled options
# in user .dfa files to error out if an unrecognized option is turned on.
option PNGCP_TIMING on
# Options to turn on png_read_png and png_write_png:
option INFO_IMAGE on
option SEQUENTIAL_READ on