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Merge pull request #611 from matthiasbeyer/libimagstore/drop-wlocks-early 

Libimagstore/drop wlocks early
This commit is contained in:
Matthias Beyer 2016-08-02 20:28:08 +02:00 committed by GitHub
parent 002fad8711 e37316f3f4
commit 76d88e46ad
1 changed files with 63 additions and 54 deletions
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117
libimagstore/src/store.rs
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@ -390,19 +390,21 @@ impl Store {
.map_err_into(SEK::CreateCallError)
}
let mut hsmap = match self.entries.write() {
Err(_) => return Err(SEK::LockPoisoned.into_error()).map_err_into(SEK::CreateCallError),
Ok(s) => s,
};
{
let mut hsmap = match self.entries.write() {
Err(_) => return Err(SEK::LockPoisoned.into_error()).map_err_into(SEK::CreateCallError),
Ok(s) => s,
};
if hsmap.contains_key(&id) {
return Err(SEK::EntryAlreadyExists.into_error()).map_err_into(SEK::CreateCallError);
if hsmap.contains_key(&id) {
return Err(SEK::EntryAlreadyExists.into_error()).map_err_into(SEK::CreateCallError);
}
hsmap.insert(id.clone(), {
let mut se = StoreEntry::new(id.clone());
se.status = StoreEntryStatus::Borrowed;
se
});
}
hsmap.insert(id.clone(), {
let mut se = StoreEntry::new(id.clone());
se.status = StoreEntryStatus::Borrowed;
se
});
let mut fle = FileLockEntry::new(self, Entry::new(id));
self.execute_hooks_for_mut_file(self.post_create_aspects.clone(), &mut fle)
@ -426,23 +428,25 @@ impl Store {
.map_err_into(SEK::RetrieveCallError)
}
self.entries
.write()
.map_err(|_| SE::new(SEK::LockPoisoned, None))
.and_then(|mut es| {
let mut se = es.entry(id.clone()).or_insert_with(|| StoreEntry::new(id.clone()));
let entry = se.get_entry();
se.status = StoreEntryStatus::Borrowed;
entry
})
.map(|e| FileLockEntry::new(self, e))
.and_then(|mut fle| {
self.execute_hooks_for_mut_file(self.post_retrieve_aspects.clone(), &mut fle)
.map_err_into(SEK::PostHookExecuteError)
.map_err_into(SEK::HookExecutionError)
.and(Ok(fle))
})
let entry = try!({
self.entries
.write()
.map_err(|_| SE::new(SEK::LockPoisoned, None))
.and_then(|mut es| {
let mut se = es.entry(id.clone()).or_insert_with(|| StoreEntry::new(id.clone()));
let entry = se.get_entry();
se.status = StoreEntryStatus::Borrowed;
entry
})
.map_err_into(SEK::RetrieveCallError)
});
let mut fle = FileLockEntry::new(self, entry);
self.execute_hooks_for_mut_file(self.post_retrieve_aspects.clone(), &mut fle)
.map_err_into(SEK::PostHookExecuteError)
.map_err_into(SEK::HookExecutionError)
.map_err_into(SEK::RetrieveCallError)
.and(Ok(fle))
}
/// Get an entry from the store if it exists.
@ -596,23 +600,25 @@ impl Store {
.map_err_into(SEK::DeleteCallError)
}
let mut entries = match self.entries.write() {
Err(_) => return Err(SE::new(SEK::LockPoisoned, None))
.map_err_into(SEK::DeleteCallError),
Ok(e) => e,
};
{
let mut entries = match self.entries.write() {
Err(_) => return Err(SE::new(SEK::LockPoisoned, None))
.map_err_into(SEK::DeleteCallError),
Ok(e) => e,
};
// if the entry is currently modified by the user, we cannot drop it
if entries.get(&id).map(|e| e.is_borrowed()).unwrap_or(false) {
return Err(SE::new(SEK::IdLocked, None))
.map_err_into(SEK::DeleteCallError);
}
// if the entry is currently modified by the user, we cannot drop it
if entries.get(&id).map(|e| e.is_borrowed()).unwrap_or(false) {
return Err(SE::new(SEK::IdLocked, None))
.map_err_into(SEK::DeleteCallError);
}
// remove the entry first, then the file
entries.remove(&id);
if let Err(e) = remove_file(&id) {
return Err(SEK::FileError.into_error_with_cause(Box::new(e)))
.map_err_into(SEK::DeleteCallError);
// remove the entry first, then the file
entries.remove(&id);
if let Err(e) = remove_file(&id) {
return Err(SEK::FileError.into_error_with_cause(Box::new(e)))
.map_err_into(SEK::DeleteCallError);
}
}
self.execute_hooks_for_id(self.post_delete_aspects.clone(), &id)
@ -680,19 +686,22 @@ impl Store {
.map_err_into(SEK::MoveByIdCallError)
}
let hsmap = self.entries.write();
if hsmap.is_err() {
return Err(SE::new(SEK::LockPoisoned, None))
}
if hsmap.unwrap().contains_key(&old_id) {
return Err(SE::new(SEK::EntryAlreadyBorrowed, None));
} else {
match rename(old_id, new_id.clone()) {
Err(e) => return Err(SEK::EntryRenameError.into_error_with_cause(Box::new(e))),
_ => {
debug!("Rename worked");
},
{
let hsmap = self.entries.write();
if hsmap.is_err() {
return Err(SE::new(SEK::LockPoisoned, None))
}
if hsmap.unwrap().contains_key(&old_id) {
return Err(SE::new(SEK::EntryAlreadyBorrowed, None));
} else {
match rename(old_id, new_id.clone()) {
Err(e) => return Err(SEK::EntryRenameError.into_error_with_cause(Box::new(e))),
_ => {
debug!("Rename worked");
},
}
}
}
self.execute_hooks_for_id(self.pre_move_aspects.clone(), &new_id)