Merge pull request #8 from spacejam/nightly_6.28.15

Nightly 6.28.15 update.

src/ffi.rs

@@ -15,48 +15,45 @@
 */
 extern crate libc;
 use self::libc::{c_char, c_int, c_void, size_t};
+use std::ffi::CString;
 
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBOptions(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBInstance(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBWriteOptions(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBReadOptions(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBMergeOperator(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBBlockBasedTableOptions(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBCache(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBFilterPolicy(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBSnapshot(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBIterator(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBCFHandle(pub *const c_void);
+#[derive(Copy, Clone)]
 #[repr(C)]
 pub struct RocksDBWriteBatch(pub *const c_void);
 
-impl Copy for RocksDBOptions {}
-impl Copy for RocksDBInstance {}
-impl Copy for RocksDBWriteOptions {}
-impl Copy for RocksDBReadOptions {}
-impl Copy for RocksDBMergeOperator {}
-impl Copy for RocksDBBlockBasedTableOptions {}
-impl Copy for RocksDBCache {}
-impl Copy for RocksDBFilterPolicy {}
-impl Copy for RocksDBCompactionStyle {}
-impl Copy for RocksDBCompressionType {}
-impl Copy for RocksDBUniversalCompactionStyle {}
-impl Copy for RocksDBSnapshot {}
-impl Copy for RocksDBIterator {}
-impl Copy for RocksDBCFHandle {}
-impl Copy for RocksDBWriteBatch {}
-
 pub fn new_bloom_filter(bits: c_int) -> RocksDBFilterPolicy {
     unsafe {
         rocksdb_filterpolicy_create_bloom(bits)
@@ -329,7 +326,7 @@ fn internal() {
         rocksdb_options_set_create_if_missing(opts, true);
 
         let rustpath = "_rust_rocksdb_internaltest";
-        let cpath = CString::from_slice(rustpath.as_bytes());
+        let cpath = CString::new(rustpath).unwrap();
         let cpath_ptr = cpath.as_ptr();
 
         let err = 0 as *mut i8;

src/lib.rs

@@ -15,12 +15,11 @@
 */
 #![crate_id = "rocksdb"]
 #![crate_type = "lib"]
-#![feature(collections)]
-#![feature(core)]
 #![feature(libc)]
 #![feature(unique)]
 #![feature(path_ext)]
-
+#![feature(raw)]
+#![feature(vec_push_all)]
 
 pub use ffi as rocksdb_ffi;
 pub use ffi::{

src/main.rs

@@ -13,16 +13,14 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 */
-#![feature(collections)]
 #![feature(test)]
+#![feature(vec_push_all)]
 
 extern crate rocksdb;
 extern crate test;
 use rocksdb::{RocksDBOptions, RocksDB, MergeOperands, new_bloom_filter};
 use rocksdb::RocksDBCompactionStyle::RocksDBUniversalCompaction;
-use test::Bencher;
 
-#[allow(dead_code)]
 fn main() {
     let path = "/tmp/rust-rocksdb";
     let db = RocksDB::open_default(path).unwrap();
@@ -44,7 +42,6 @@ fn main() {
     custom_merge();
 }
 
-#[allow(dead_code)]
 fn concat_merge(new_key: &[u8], existing_val: Option<&[u8]>,
     mut operands: &mut MergeOperands) -> Vec<u8> {
     let mut result: Vec<u8> = Vec::with_capacity(operands.size_hint().0);
@@ -58,26 +55,42 @@ fn concat_merge(new_key: &[u8], existing_val: Option<&[u8]>,
     result
 }
 
-#[allow(dead_code)]
 fn custom_merge() {
     let path = "_rust_rocksdb_mergetest";
     let opts = RocksDBOptions::new();
     opts.create_if_missing(true);
     opts.add_merge_operator("test operator", concat_merge);
     let db = RocksDB::open(opts, path).unwrap();
-    let p = db.put(b"k1", b"a");
+    db.put(b"k1", b"a");
     db.merge(b"k1", b"b");
     db.merge(b"k1", b"c");
     db.merge(b"k1", b"d");
     db.merge(b"k1", b"efg");
-    let m = db.merge(b"k1", b"h");
-    let r = db.get(b"k1");
-    assert!(r.unwrap().to_utf8().unwrap() == "abcdefgh");
+    db.merge(b"k1", b"h");
+    db.get(b"k1").map( |value| {
+        match value.to_utf8() {
+            Some(v) =>
+                println!("retrieved utf8 value: {}", v),
+            None =>
+                println!("did not read valid utf-8 out of the db"),
+        }
+    })
+        .on_absent( || { println!("value not found") })
+        .on_error( |e| { println!("error retrieving value: {}", e) });
+
     db.close();
     RocksDB::destroy(opts, path).is_ok();
 }
 
-#[allow(dead_code)]
+
+#[cfg(test)]
+mod tests  {
+    use test::Bencher;
+    use std::thread::sleep_ms;
+
+    use rocksdb::{RocksDBOptions, RocksDB, MergeOperands, new_bloom_filter};
+    use rocksdb::RocksDBCompactionStyle::RocksDBUniversalCompaction;
+
     fn tuned_for_somebody_elses_disk() -> RocksDB {
         let path = "_rust_rocksdb_optimizetest";
         let opts = RocksDBOptions::new();
@@ -107,9 +120,10 @@ fn tuned_for_somebody_elses_disk() -> RocksDB {
         RocksDB::open(opts, path).unwrap()
     }
 
-#[allow(dead_code)]
     #[bench]
     fn writes(b: &mut Bencher) {
+        // dirty hack due to parallel tests causing contention.
+        sleep_ms(1000);
         let db = tuned_for_somebody_elses_disk();
         let mut i = 0 as u64;
         b.iter(|| {
@@ -119,7 +133,6 @@ fn writes(b: &mut Bencher) {
         db.close();
     }
 
-#[allow(dead_code)]
     #[bench]
     fn reads(b: &mut Bencher) {
         let db = tuned_for_somebody_elses_disk();
@@ -133,3 +146,4 @@ fn reads(b: &mut Bencher) {
         });
         db.close();
     }
+}

src/merge_operator.rs

@@ -56,9 +56,9 @@ pub extern "C" fn full_merge_callback(
             &mut MergeOperands::new(operands_list,
                                     operands_list_len,
                                     num_operands);
-        let key: &[u8] = mem::transmute(slice::from_raw_buf(&raw_key, key_len as usize));
-        let oldval: &[u8] = mem::transmute(slice::from_raw_buf(&existing_value,
-                                  existing_value_len as usize));
+        let key: &[u8] = slice::from_raw_parts(raw_key as *const u8, key_len as usize);
+        let oldval: &[u8] = slice::from_raw_parts(existing_value as *const u8,
+                                  existing_value_len as usize);
         let mut result =
             (cb.merge_fn)(key, Some(oldval), operands);
         result.shrink_to_fit();
@@ -67,7 +67,7 @@ pub extern "C" fn full_merge_callback(
         assert!(!buf.is_null());
         *new_value_length = result.len() as size_t;
         *success = 1 as u8;
-        ptr::copy(&mut *buf, result.as_ptr() as *const c_void, result.len());
+        ptr::copy(result.as_ptr() as *mut c_void, &mut *buf, result.len());
         buf as *const c_char
     }
 }
@@ -83,7 +83,7 @@ pub extern "C" fn partial_merge_callback(
         let operands = &mut MergeOperands::new(operands_list,
                                                operands_list_len,
                                                num_operands);
-        let key: &[u8] = mem::transmute(slice::from_raw_buf(&raw_key, key_len as usize));
+        let key: &[u8] = slice::from_raw_parts(raw_key as *const u8, key_len as usize);
         let mut result = (cb.merge_fn)(key, None, operands);
         result.shrink_to_fit();
         //TODO(tan) investigate zero-copy techniques to improve performance
@@ -91,7 +91,7 @@ pub extern "C" fn partial_merge_callback(
         assert!(!buf.is_null());
         *new_value_length = 1 as size_t;
         *success = 1 as u8;
-        ptr::copy(&mut *buf, result.as_ptr() as *const c_void, result.len());
+        ptr::copy(result.as_ptr() as *mut c_void, &mut *buf, result.len());
         buf as *const c_char
     }
 }

src/rocksdb.rs

@@ -52,7 +52,7 @@ impl RocksDB {
         let ospath = Path::new(path);
         if !ospath.exists() {
             match fs::create_dir_all(&ospath) {
-                Err(_) => return Err(""),
+                Err(e) => return Err("Failed to create rocksdb directory."),
                 Ok(_) => (),
             }
         }
@@ -198,7 +198,7 @@ pub struct RocksDBVector {
 impl Deref for RocksDBVector {
     type Target = [u8];
     fn deref(&self) -> &[u8] {
-        unsafe { slice::from_raw_mut_buf(self.base.deref(), self.len) }
+        unsafe { slice::from_raw_parts(self.base.get(), self.len) }
     }
 }
 
@@ -213,9 +213,8 @@ impl Drop for RocksDBVector {
 impl RocksDBVector {
     pub fn from_c(val: *mut u8, val_len: size_t) -> RocksDBVector {
         unsafe {
-            let base = Unique::new(val);
             RocksDBVector {
-                base: base,
+                base: Unique::new(val),
                 len: val_len as usize,
             }
         }

src/rocksdb_options.rs

@@ -22,13 +22,12 @@ use rocksdb_ffi;
 use merge_operator::{MergeOperatorCallback, MergeOperands, destructor_callback, full_merge_callback,
               partial_merge_callback, name_callback};
 
+#[derive(Copy, Clone)]
 pub struct RocksDBOptions {
     pub inner: rocksdb_ffi::RocksDBOptions,
     block_options: rocksdb_ffi::RocksDBBlockBasedTableOptions,
 }
 
-impl Copy for RocksDBOptions {}
-
 impl RocksDBOptions {
     pub fn new() -> RocksDBOptions {
         unsafe {