Changed ffi types to pointer for i686 compatibility

src/ffi.rs

@@ -17,45 +17,50 @@ use self::libc::{c_char, c_int, c_void, size_t};
 use std::ffi::CStr;
 use std::str::from_utf8;
 
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBOptions(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBInstance(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBWriteOptions(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBReadOptions(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBMergeOperator(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBBlockBasedTableOptions(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBCache(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBFilterPolicy(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBSnapshot(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBIterator(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBCFHandle(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBWriteBatch(pub *const c_void);
-#[derive(Copy, Clone)]
-#[repr(C)]
-pub struct DBComparator(pub *const c_void);
+pub enum DBOptionsOpaque {}
+pub type DBOptions = *const DBOptionsOpaque;
+
+pub enum DBInstanceOpaque {}
+pub type DBInstance = *const DBInstanceOpaque;
+
+pub enum DBWriteOptionsOpaque {}
+pub type DBWriteOptions = *const DBWriteOptionsOpaque;
+
+pub enum DBReadOptionsOpaque {}
+pub type DBReadOptions = *const DBReadOptionsOpaque;
+
+pub enum DBMergeOperatorOpaque {}
+pub type DBMergeOperator = *const DBMergeOperatorOpaque;
+
+pub enum DBBlockBasedTableOptionsOpaque {}
+pub type DBBlockBasedTableOptions = *const DBBlockBasedTableOptionsOpaque;
+
+pub enum DBCacheOpaque {}
+pub type DBCache = *const DBCacheOpaque;
+
+pub enum DBFilterPolicyOpaque {}
+pub type DBFilterPolicy = *const DBFilterPolicyOpaque;
+
+pub enum DBSnapshotOpaque {}
+pub type DBSnapshot = *const DBSnapshotOpaque;
+
+pub enum DBIteratorOpaque {}
+pub type DBIterator = *const DBIteratorOpaque;
+
+pub enum DBCFHandleOpaque {}
+pub type DBCFHandle = *const DBCFHandleOpaque;
+
+pub enum DBWriteBatchOpaque {}
+pub type DBWriteBatch = *const DBWriteBatchOpaque;
+
+pub enum DBComparatorOpaque {}
+pub type DBComparator = *const DBComparatorOpaque;
+
+pub enum DBSliceTransformOpaque {}
+pub type DBSliceTransform = *const DBSliceTransformOpaque;
+
+pub const BLOCK_BASED_INDEX_TYPE_BINARY_SEARCH: c_int = 0;
+pub const BLOCK_BASED_INDEX_TYPE_HASH_SEARCH: c_int = 1;
 
 pub fn new_bloom_filter(bits: c_int) -> DBFilterPolicy {
     unsafe { rocksdb_filterpolicy_create_bloom(bits) }

src/rocksdb.rs

@@ -23,7 +23,7 @@ use std::path::Path;
 use std::slice;
 use std::str::from_utf8;
 
-use self::libc::{c_void, size_t};
+use self::libc::size_t;
 
 use rocksdb_ffi::{self, DBCFHandle, error_message};
 use rocksdb_options::{Options, WriteOptions};
@@ -317,7 +317,7 @@ impl DB {
             // These handles will be populated by DB.
             let cfhandles: Vec<rocksdb_ffi::DBCFHandle> =
                 cfs_v.iter()
-                     .map(|_| rocksdb_ffi::DBCFHandle(0 as *mut c_void))
+                     .map(|_| 0 as rocksdb_ffi::DBCFHandle)
                      .collect();
 
             // TODO(tyler) allow options to be passed in.
@@ -338,7 +338,7 @@ impl DB {
             }
 
             for handle in cfhandles.iter() {
-                if handle.0.is_null() {
+                if handle.is_null() {
                     return Err("Received null column family handle from DB."
                                    .to_string());
                 }
@@ -352,7 +352,7 @@ impl DB {
         if !err.is_null() {
             return Err(error_message(err));
         }
-        if db.0.is_null() {
+        if db.is_null() {
             return Err("Could not initialize database.".to_string());
         }
 
@@ -422,7 +422,7 @@ impl DB {
                    key: &[u8],
                    readopts: &ReadOptions)
                    -> Result<Option<DBVector>, String> {
-        if readopts.inner.0.is_null() {
+        if readopts.inner.is_null() {
             return Err("Unable to create rocksdb read options.  This is a \
                         fairly trivial call, and its failure may be \
                         indicative of a mis-compiled or mis-loaded rocksdb \
@@ -461,7 +461,7 @@ impl DB {
                       key: &[u8],
                       readopts: &ReadOptions)
                       -> Result<Option<DBVector>, String> {
-        if readopts.inner.0.is_null() {
+        if readopts.inner.is_null() {
             return Err("Unable to create rocksdb read options.  This is a \
                         fairly trivial call, and its failure may be \
                         indicative of a mis-compiled or mis-loaded rocksdb \

src/rocksdb_options.rs

@@ -63,8 +63,7 @@ impl BlockBasedOptions {
         let block_opts = unsafe {
             rocksdb_ffi::rocksdb_block_based_options_create()
         };
-        let rocksdb_ffi::DBBlockBasedTableOptions(opt_ptr) = block_opts;
-        if opt_ptr.is_null() {
+        if block_opts.is_null() {
             panic!("Could not create rocksdb block based options".to_string());
         }
         BlockBasedOptions { inner: block_opts }
@@ -106,8 +105,7 @@ impl Options {
     pub fn new() -> Options {
         unsafe {
             let opts = rocksdb_ffi::rocksdb_options_create();
-            let rocksdb_ffi::DBOptions(opt_ptr) = opts;
-            if opt_ptr.is_null() {
+            if opts.is_null() {
                 panic!("Could not create rocksdb options".to_string());
             }
             Options { inner: opts }