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vec: undo storing file in struct, can overwhelm system

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This commit is contained in:
nym21
2025-06-24 13:20:44 +02:00
parent 1c653693ed
commit 44e5415d43
7 changed files with 67 additions and 102 deletions
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28
crates/brk_vec/src/traits/generic.rs
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@@ -95,6 +95,9 @@ where
// ---
fn open_file(&self) -> io::Result<File> {
Self::open_file_(&self.path())
}
fn open_file_(path: &Path) -> io::Result<File> {
let mut file = OpenOptions::new()
.read(true)
@@ -106,13 +109,9 @@ where
Ok(file)
}
fn file(&self) -> &File;
fn mut_file(&mut self) -> &mut File;
fn file_set_len(&mut self, len: u64) -> Result<()> {
let file = self.mut_file();
fn file_set_len(&mut self, file: &mut File, len: u64) -> Result<()> {
Self::file_set_len_(file, len)?;
self.update_mmap()
self.update_mmap(file)
}
fn file_set_len_(file: &mut File, len: u64) -> Result<()> {
file.set_len(len)?;
@@ -120,32 +119,31 @@ where
Ok(())
}
fn file_write_all(&mut self, buf: &[u8]) -> Result<()> {
let file = self.mut_file();
fn file_write_all(&mut self, file: &mut File, buf: &[u8]) -> Result<()> {
file.write_all(buf)?;
self.update_mmap()
self.update_mmap(file)
}
fn file_truncate_and_write_all(&mut self, len: u64, buf: &[u8]) -> Result<()> {
let file = self.mut_file();
fn file_truncate_and_write_all(&mut self, file: &mut File, len: u64, buf: &[u8]) -> Result<()> {
Self::file_set_len_(file, len)?;
file.write_all(buf)?;
self.update_mmap()
self.update_mmap(file)
}
fn reset(&mut self) -> Result<()>;
#[inline]
fn reset_(&mut self) -> Result<()> {
self.file_truncate_and_write_all(HEADER_OFFSET as u64, &[])
let mut file = self.open_file()?;
self.file_truncate_and_write_all(&mut file, HEADER_OFFSET as u64, &[])
}
fn new_mmap(file: &File) -> Result<Arc<Mmap>> {
Ok(Arc::new(unsafe { Mmap::map(file)? }))
}
fn update_mmap(&mut self) -> Result<()> {
let mmap = Self::new_mmap(self.file())?;
fn update_mmap(&mut self, file: &File) -> Result<()> {
let mmap = Self::new_mmap(file)?;
self.mmap().store(mmap);
Ok(())
}