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database/helper: define statics within functions (#135)

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hinto-janai 2024-05-23 21:16:39 -04:00 committed by GitHub
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commit 1e857416c9
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2 changed files with 6 additions and 11 deletions
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4
database/src/resize.rs
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@ -85,8 +85,6 @@ impl Default for ResizeAlgorithm {
} }
//---------------------------------------------------------------------------------------------------- Free functions //---------------------------------------------------------------------------------------------------- Free functions
/// Cached result of [`page_size()`].
static PAGE_SIZE: OnceLock<NonZeroUsize> = OnceLock::new();
/// This function retrieves the system’s memory page size. /// This function retrieves the system’s memory page size.
/// ///
/// It is just [`page_size::get`](https://docs.rs/page_size) internally. /// It is just [`page_size::get`](https://docs.rs/page_size) internally.
@ -97,6 +95,8 @@ static PAGE_SIZE: OnceLock<NonZeroUsize> = OnceLock::new();
/// This function will panic if the OS returns of page size of `0` (impossible?). /// This function will panic if the OS returns of page size of `0` (impossible?).
#[inline] #[inline]
pub fn page_size() -> NonZeroUsize { pub fn page_size() -> NonZeroUsize {
/// Cached result of [`page_size()`].
static PAGE_SIZE: OnceLock<NonZeroUsize> = OnceLock::new();
*PAGE_SIZE *PAGE_SIZE
.get_or_init(|| NonZeroUsize::new(page_size::get()).expect("page_size::get() returned 0")) .get_or_init(|| NonZeroUsize::new(page_size::get()).expect("page_size::get() returned 0"))
} }

13
helper/src/fs.rs
View file

@ -78,17 +78,16 @@ macro_rules! impl_path_oncelock_and_fn {
$(#[$attr:meta])* // Documentation and any `derive`'s. $(#[$attr:meta])* // Documentation and any `derive`'s.
$fn:ident, // Name of the corresponding access function. $fn:ident, // Name of the corresponding access function.
$dirs_fn:ident, // Name of the `dirs` function to use, the PATH prefix. $dirs_fn:ident, // Name of the `dirs` function to use, the PATH prefix.
$once_lock:ident, // Name of the `OnceLock`.
$sub_dirs:literal // Any sub-directories to add onto the PATH. $sub_dirs:literal // Any sub-directories to add onto the PATH.
),* $(,)?) => {$( ),* $(,)?) => {$(
/// Local `OnceLock` containing the Path.
static $once_lock: OnceLock<PathBuf> = OnceLock::new();
// Create the `OnceLock` if needed, append // Create the `OnceLock` if needed, append
// the Cuprate directory string and return. // the Cuprate directory string and return.
$(#[$attr])* $(#[$attr])*
pub fn $fn() -> &'static Path { pub fn $fn() -> &'static Path {
$once_lock.get_or_init(|| { /// Local `OnceLock` containing the Path.
static ONCE_LOCK: OnceLock<PathBuf> = OnceLock::new();
ONCE_LOCK.get_or_init(|| {
// There's nothing we can do but panic if // There's nothing we can do but panic if
// we cannot acquire critical system directories. // we cannot acquire critical system directories.
// //
@ -139,7 +138,6 @@ impl_path_oncelock_and_fn! {
/// | Linux | `/home/alice/.cache/cuprate/` | /// | Linux | `/home/alice/.cache/cuprate/` |
cuprate_cache_dir, cuprate_cache_dir,
cache_dir, cache_dir,
__CUPRATE_CACHE_DIR,
"", "",
/// Cuprate's config directory. /// Cuprate's config directory.
@ -153,7 +151,6 @@ impl_path_oncelock_and_fn! {
/// | Linux | `/home/alice/.config/cuprate/` | /// | Linux | `/home/alice/.config/cuprate/` |
cuprate_config_dir, cuprate_config_dir,
config_dir, config_dir,
__CUPRATE_CONFIG_DIR,
"", "",
/// Cuprate's data directory. /// Cuprate's data directory.
@ -167,7 +164,6 @@ impl_path_oncelock_and_fn! {
/// | Linux | `/home/alice/.local/share/cuprate/` | /// | Linux | `/home/alice/.local/share/cuprate/` |
cuprate_data_dir, cuprate_data_dir,
data_dir, data_dir,
__CUPRATE_DATA_DIR,
"", "",
/// Cuprate's database directory. /// Cuprate's database directory.
@ -181,7 +177,6 @@ impl_path_oncelock_and_fn! {
/// | Linux | `/home/alice/.local/share/cuprate/database/` | /// | Linux | `/home/alice/.local/share/cuprate/database/` |
cuprate_database_dir, cuprate_database_dir,
data_dir, data_dir,
__CUPRATE_DATABASE_DIR,
"database", "database",
} }