Commit Graph

27 Commits

Author SHA1 Message Date
kleines Filmröllchen
3c212c8535 AK: Remove Duration::now_monotonic
This is the end of absolute time support in Duration. :^)
2023-05-24 23:18:07 +02:00
kleines Filmröllchen
b2e7b8cdff AK: Introduce MonotonicTime
This class takes on the duties of CLOCK_MONOTONIC, a time without a
defined reference point that always increases. This informs some
important design decisions about the class API: MonotonicTime cannot be
constructed from external time data, except as a computation based on
other monotonic time, or the current monotonic time. Importantly, there
is no default constructor, since the reference point of monotonic time
is unspecified and therefore without meaning as a default.

The current use of monotonic time (via Duration) includes some potential
problems that may be caught when we move most to all code to
MonotonicTime in the next commit.

The API restrictions have one important relaxation:
Kernel::TimeManagement is allowed to exchange raw time data within
MonotonicTime freely. This is required for the clock-agnostic time
accessors for timeouts and syscalls, as well as creating monotonic time
data from hardware in the first place.
2023-05-24 23:18:07 +02:00
kleines Filmröllchen
69e27169c4 AK: Remove now-unused Duration methods
These are not applicable to Duration, since it's not a timestamp class.
2023-05-24 23:18:07 +02:00
kleines Filmröllchen
c1323febc2 AK: Introduce UnixDateTime
This is a generic wrapper for a time instant relative to the unix epoch,
and does not account for leap seconds. It should be used in place of
Duration in most current cases.
2023-05-24 23:18:07 +02:00
kleines Filmröllchen
0dfcaf1389 AK: Make Duration arithmetic constexpr
This is a trivial change, and since this batch of commits will make a
large-scale rebuild necessary anyways, it seems sensible. The feature is
useful for e.g. building compound constant durations at compile time in
a readable way.
2023-05-24 23:18:07 +02:00
kleines Filmröllchen
213025f210 AK: Rename Time to Duration
That's what this class really is; in fact that's what the first line of
the comment says it is.

This commit does not rename the main files, since those will contain
other time-related classes in a little bit.
2023-05-24 23:18:07 +02:00
Andrew Kaster
a8fcd39b88 AK: Reimplement comparisons on AK::Time using operator<=>
This allows us to make all comparision operators on the class constexpr
without pulling in a bunch of boilerplate. We don't use the `<compare>`
header because it doesn't compile in the main serenity cross-build due
to the include paths to LibC being incompatible with how libc++ expects
them to be for clang builds.
2023-01-07 14:51:04 +01:00
Diego Iastrubni
18257604eb Lagom: Win32 support baby steps
This is the initial port of Lagom to win32. This will enable developers
to use Lagom as an alternative to vanilla STL/StandardC++Library - which
gives a much richer environment (think QtCore - but modern).

My main incentive - is to have a native Windows Ladybird working.

I am starting with AK, which does not yet fully compile (on mingw). When
AK is compiling (currently fails building StringBuffer.cpp) - I will
continue to LibCore and then the rest of the user space libraries
(excluding the GUI, which will be another different effort).

Most of the code is happily stollen from Andrew Kaster's fork - he
deserves the credit.

Co-authored-by: Andrew Kaster <akaster@serenityos.org>
2022-09-29 17:01:22 +01:00
Idan Horowitz
086969277e Everywhere: Run clang-format 2022-04-01 21:24:45 +01:00
Lucas CHOLLET
39bfc48ea7 AK: Add Time::from_ticks()
This helper allows Time to be constructed from a tick count and a ticks
per second value.
2022-02-28 20:09:37 +01:00
Timothy Flynn
bc719e7bac AK: Put an empty new line between function definitions in AK::Time
There was over 110 lines without a single line break, let's give our
eyes a break.
2022-01-19 21:20:41 +00:00
Timothy Flynn
548643bcc9 AK: Redeclare a few AK::Time helpers as constexpr
This is to allow using these methods within an upcoming constexpr
factory method.
2022-01-11 23:56:35 +01:00
Brian Gianforcaro
10f5a046c4 AK: Remove dead store from Time:operator+
This is written, but never read again, and is thus useless.
2021-09-01 01:22:14 +02:00
Richard Wurth
4b2953125b AK: Use POSIX specified types for Time::to_timespec and to_timeval
The previous implementation assumed 64-bit time_t and 32-bit long,
which is not true on some 32-bit systems
2021-08-22 17:07:11 +02:00
Brian Gianforcaro
dae17ce7e3 AK: Add Time::now_<clock_id> functions for obtaining the current time
In the quest of removing as timespec / timeval usage in the Userland as
possible, we need a way to conveniently retrieving the current clock
time from the kernel and storing it in `AK::Time` format.
2021-08-15 12:20:38 +02:00
Lenny Maiorani
0681086cad Time: Remove static from function local constexpr variable
Problem:
- Function local `constexpr` variables do not need to be
  `static`. This consumes memory which is unnecessary and can prevent
  some optimizations.
- C-style arrays are not as safe as AK::Arrays and require the user to
  specify the length of the array manually.

Solution:
- Remove `static` keyword.
- Change from C-style array for AK::Array.
2021-05-19 16:24:02 +02:00
Linus Groh
649d2faeab Everywhere: Use "the SerenityOS developers." in copyright headers
We had some inconsistencies before:

- Sometimes "The", sometimes "the"
- Sometimes trailing ".", sometimes no trailing "."

I picked the most common one (lowecase "the", trailing ".") and applied
it to all copyright headers.

By using the exact same string everywhere we can ensure nothing gets
missed during a global search (and replace), and that these
inconsistencies are not spread any further (as copyright headers are
commonly copied to new files).
2021-04-29 00:59:26 +02:00
Brian Gianforcaro
1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00
Ben Wiederhake
81079ae616 AK: Fix some overflows/underflows that weren't properly handled
Based on #5699. Closes #5699.
2021-03-13 10:17:28 +01:00
Andreas Kling
ef1e5db1d0 Everywhere: Remove klog(), dbg() and purge all LogStream usage :^)
Good-bye LogStream. Long live AK::Format!
2021-03-12 17:29:37 +01:00
Tom
183b2e71ba AK: Take advantage of constexpr in Time and add time conversion methods
By making the Time constructor constexpr we can optimize creating a
Time instance from hardcoded values.

Also add more functions to convert between Time and various time units.
2021-03-08 15:29:11 +01:00
Ben Wiederhake
340813e087 AK: Make Time more usable 2021-03-02 08:36:08 +01:00
Ben Wiederhake
bd6be910e5 AK: Implement C++ 'Time' type for easier time-calculations
This adds a bunch of code in the hope that other, wrong code can be deleted.

Related to #5315.
2021-03-02 08:36:08 +01:00
Andreas Kling
5d180d1f99 Everywhere: Rename ASSERT => VERIFY
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)

Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.

We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
2021-02-23 20:56:54 +01:00
Nico Weber
1ab8939077 AK+LibC+LibCore: Have fewer implementations of day_of_week
The implementation in LibC did a timestamp->day-of-week conversion
which looks like a valuable thing to have. But we only need it in
time_to_tm, where we already computed year/month/day -- so let's
consolidate on the day_of_week function in DateTime (which is
getting extracted to AK).
2020-08-26 08:52:07 +02:00
Nico Weber
a7a18b478e AK+LibC+LibCore: Have fewer implementations of days_in_month 2020-08-26 08:52:07 +02:00
Nico Weber
c85e679e2d AK+LibCore+Kernel: Have fewer implementations of day_of_year
The JS tests pointed out that the implementation in DateTime
had an off-by-one in the month when doing the leap year check,
so this change fixes that bug.
2020-08-26 08:52:07 +02:00