[libc][NFC] Cleanup time.h (#122027)

While working on strftime I noticed some constants were being defined in
unexpected places. One thing led to another, and I ended up doing a
major cleanup of the

[libc][NFC] Cleanup time.h (#122027)

While working on strftime I noticed some constants were being defined in
unexpected places. One thing led to another, and I ended up doing a
major cleanup of the time functions.

What's included:
All uses of <time.h> in /src and /test removed (except for LibcTest.cpp)
The various time constants have been moved to time_constants.h, and the
`time_constants` namespace.
struct tm gets its own type indirection header now.

show more ...

[libc][NFC] Attempt to deflake gettimeofday_test. (#69719)

Only check if gettimeofday call succeeds.

[libc][NFC] Forcing data type in gettimeofday_test when comparing the diff. (#69652)

[libc] Mass replace enclosing namespace (#67032)

This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079

[libc] Fix test passing negative value in timespec passed to nanosleep (#65346)

This test was setting tv_nsec to a negative value, which as per the
standard this is an EINVAL:

The value in the t

[libc] Fix test passing negative value in timespec passed to nanosleep (#65346)

This test was setting tv_nsec to a negative value, which as per the
standard this is an EINVAL:

The value in the tv_nsec field was not in the range [0, 999999999] or
tv_sec was negative.

https://man7.org/linux/man-pages/man2/nanosleep.2.html

show more ...

[libc] Make ErrnoSetterMatcher handle logging floating point values.

Along the way, couple of additional things have been done:

1. Move `ErrnoSetterMatcher.h` to `test/UnitTest` as all other matche

[libc] Make ErrnoSetterMatcher handle logging floating point values.

Along the way, couple of additional things have been done:

1. Move `ErrnoSetterMatcher.h` to `test/UnitTest` as all other matchers live
there now.
2. `ErrnoSetterMatcher` ignores matching `errno` on GPUs.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D151129

show more ...

[libc][NFC] Switch use of errno in src/time and test/src/time to libc_errno.

Switch use of errno in src/time and test/src/time to libc_errno.

Reviewed By: sivachandra

Differential Revision: https:

[libc][NFC] Switch use of errno in src/time and test/src/time to libc_errno.

Switch use of errno in src/time and test/src/time to libc_errno.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D145192

show more ...

[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.

This part of the effort to make all test related pieces into the `test`
directory. This helps is excluding test related pieces

[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.

This part of the effort to make all test related pieces into the `test`
directory. This helps is excluding test related pieces in a straight
forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move
the MPFR wrapper and testutils into the 'test' directory.

show more ...

[libc] cleanup changes to gettimeofday.

+ Deleted duplicate definitions of StructTimeVal and StructTimeValPtr.
+ Caled syscall clock_gettime to get timespec data.
+ Added tests to test for sleeping

[libc] cleanup changes to gettimeofday.

+ Deleted duplicate definitions of StructTimeVal and StructTimeValPtr.
+ Caled syscall clock_gettime to get timespec data.
+ Added tests to test for sleeping 200 and 1000 microseconds.
+ Fixed comments from https://reviews.llvm.org/D137881

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D138064

show more ...

[libc] Implement gettimeofday

Implement gettimeofday per
.../onlinepubs/9699919799/functions/gettimeofday.html.
This call clock_gettime to implement gettimeofday function.

Tested:
Limited unit test

[libc] Implement gettimeofday

Implement gettimeofday per
.../onlinepubs/9699919799/functions/gettimeofday.html.
This call clock_gettime to implement gettimeofday function.

Tested:
Limited unit test: This makes a call and checks that no error was
returned. Used nanosleep for 100 microseconds and verfified it
returns a value that elapses more than 100 microseconds and less
than 300 microseconds.

Co-authored-by: Jeff Bailey <jeffbailey@google.com>

Differential Revision: https://reviews.llvm.org/D137881

show more ...