Struct rocksdb::Env[][src]

pub struct Env { /* fields omitted */ }

An Env is an interface used by the rocksdb implementation to access operating system functionality like the filesystem etc. Callers may wish to provide a custom Env object when opening a database to get fine gain control; e.g., to rate limit file system operations.

All Env implementations are safe for concurrent access from multiple threads without any external synchronization.

Note: currently, C API behinds C++ API for various settings. See also: rocksdb/include/env.h

Implementations

impl Env[src]

pub fn default() -> Result<Env, Error>[src]

Returns default env

pub fn mem_env() -> Result<Env, Error>[src]

Returns a new environment that stores its data in memory and delegates all non-file-storage tasks to base_env.

pub fn set_background_threads(&mut self, num_threads: c_int)[src]

Sets the number of background worker threads of a specific thread pool for this environment. LOW is the default pool.

Default: 1

pub fn set_high_priority_background_threads(&mut self, n: c_int)[src]

Sets the size of the high priority thread pool that can be used to prevent compactions from stalling memtable flushes.

pub fn set_low_priority_background_threads(&mut self, n: c_int)[src]

Sets the size of the low priority thread pool that can be used to prevent compactions from stalling memtable flushes.

pub fn set_bottom_priority_background_threads(&mut self, n: c_int)[src]

Sets the size of the bottom priority thread pool that can be used to prevent compactions from stalling memtable flushes.

pub fn join_all_threads(&mut self)[src]

Wait for all threads started by StartThread to terminate.

pub fn lower_thread_pool_io_priority(&mut self)[src]

Lowering IO priority for threads from the specified pool.

pub fn lower_high_priority_thread_pool_io_priority(&mut self)[src]

Lowering IO priority for high priority thread pool.

pub fn lower_thread_pool_cpu_priority(&mut self)[src]

Lowering CPU priority for threads from the specified pool.

pub fn lower_high_priority_thread_pool_cpu_priority(&mut self)[src]

Lowering CPU priority for high priority thread pool.

Trait Implementations

impl Drop for Env[src]

Auto Trait Implementations

impl RefUnwindSafe for Env

impl !Send for Env

impl !Sync for Env

impl Unpin for Env

impl UnwindSafe for Env

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.