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Kernel: static vs non-static constexpr variables

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Problem:
- `static` variables consume memory and sometimes are less
  optimizable.
- `static const` variables can be `constexpr`, usually.
- `static` function-local variables require an initialization check
  every time the function is run.

Solution:
- If a global `static` variable is only used in a single function then
  move it into the function and make it non-`static` and `constexpr`.
- Make all global `static` variables `constexpr` instead of `const`.
- Change function-local `static const[expr]` variables to be just
  `constexpr`.
This commit is contained in:
Lenny Maiorani 2021-05-19 08:35:09 -06:00 • committed by Linus Groh
commit 5751327195
Notes: sideshowbarker 2024-07-18 17:46:00 +09:00
15 changed files with 30 additions and 37 deletions
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2
Kernel/FileSystem/FileSystem.h
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@ -18,7 +18,7 @@
namespace Kernel {
static const u32 mepoch = 476763780;
static constexpr u32 mepoch = 476763780;
class Inode;
class FileDescription;