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author | Jay Satiro <raysatiro@yahoo.com> | 2020-01-24 03:34:52 -0500 |
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committer | Jay Satiro <raysatiro@yahoo.com> | 2020-02-18 15:52:13 -0500 |
commit | 1fc0617dccc3fa138235f219e2eaa7b405d1162e (patch) | |
tree | 76d86ee1145e2e8dad7dc16f95c4a4b14f88898e /scripts/completion.pl | |
parent | 3735107d62ad28d6e25bd94109ab9f2454c22116 (diff) |
tool_util: Improve Windows version of tvnow()
- Change tool_util.c tvnow() for Windows to match more closely to
timeval.c Curl_now().
- Create a win32 init function for the tool, since some initialization
is required for the tvnow() changes.
Prior to this change the monotonic time function used by curl in Windows
was determined at build-time and not runtime. That was a problem because
when curl was built targeted for compatibility with old versions of
Windows (eg _WIN32_WINNT < 0x0600) it would use GetTickCount which wraps
every 49.7 days that Windows has been running.
This change makes curl behave similar to libcurl's tvnow function, which
determines at runtime whether the OS is Vista+ and if so calls
QueryPerformanceCounter instead. (Note QueryPerformanceCounter is used
because it has higher resolution than the more obvious candidate
GetTickCount64). The changes to tvnow are basically a copy and paste but
the types in some cases are different.
Ref: https://github.com/curl/curl/issues/3309
Closes https://github.com/curl/curl/pull/4847
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