need to rework storage strategy

.gitignore

@@ -44,3 +44,6 @@ lcov
 cdb.rs
 *.cdb
 compile_commands.json
+
+*.cmd
+core

deps/ccommon/src/cc_debug.c

@@ -144,10 +144,10 @@ debug_setup(debug_options_st *options)
     }
 
     /* some adjustment on signal handling */
-    if (signal_override(SIGSEGV, "printing stacktrace when segfault", 0, 0,
-            _stacktrace) < 0) {
-        goto error;
-    }
+//    if (signal_override(SIGSEGV, "printing stacktrace when segfault", 0, 0,
+//            _stacktrace) < 0) {
+//        goto error;
+//    }
 
     /* to allow logrotate with nocopytruncate, use SIGHUP to reopen log */
     if (signal_override(SIGHUP, "reopen log file", 0, 0, _logrotate) < 0) {

src/storage/cdb/cdb_rs/src/cdb/mod.rs

@@ -23,6 +23,7 @@ pub type Result<T> = result::Result<T, CDBError>;
 
 // idea from https://raw.githubusercontent.com/jothan/cordoba/master/src/lib.rs
 #[derive(Copy, Clone, Eq, PartialEq)]
+#[repr(C)]
 struct CDBHash(u32);
 
 impl CDBHash {
@@ -70,6 +71,7 @@ impl<'a> From<&'a CDBHash> for u32 {
 }
 
 #[derive(Copy, Clone)]
+#[repr(C)]
 struct Bucket {
     ptr: usize,
     num_ents: usize,
@@ -95,6 +97,7 @@ impl Bucket {
 }
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[repr(C)]
 struct IndexEntryPos(usize);
 
 impl From<IndexEntryPos> for usize {
@@ -104,6 +107,7 @@ impl From<IndexEntryPos> for usize {
 }
 
 #[derive(Clone, Debug)]
+#[repr(C)]
 pub struct KV {
     pub k: Bytes,
     pub v: Bytes,
@@ -126,6 +130,7 @@ struct IndexEntry {
     ptr: usize,    // pointer to the absolute position of the data in the db
 }
 
+#[repr(C)]
 pub struct KVIter {
     cdb: Box<CDB>,
     bkt_idx: usize,
@@ -168,7 +173,7 @@ impl Iterator for KVIter {
                 };
 
             self.entry_n += 1;
-            
+
             if idx_ent.ptr == 0 {
                 continue
             } else {
@@ -182,6 +187,7 @@ impl Iterator for KVIter {
 }
 
 #[derive(Debug)]
+#[repr(C)]
 pub struct CDB {
     data: SliceFactory,
 }

src/storage/cdb/cdb_rs/src/cdb/storage.rs

@@ -9,6 +9,7 @@ use std::sync::Arc;
 use super::Result;
 
 #[derive(Debug)]
+#[repr(C)]
 pub enum SliceFactory {
     HeapStorage(Bytes),
     MmapStorage(MMapWrap),
@@ -95,6 +96,7 @@ impl Clone for SliceFactory {
 }
 
 #[derive(Debug)]
+#[repr(C)]
 pub struct MMapWrap {
     inner: Arc<Mmap>
 }
@@ -120,6 +122,7 @@ impl Clone for MMapWrap {
 }
 
 #[derive(Debug)]
+#[repr(C)]
 pub struct FileWrap {
     inner: RefCell<File>,
     path: String,
@@ -164,6 +167,7 @@ impl Clone for FileWrap {
     }
 }
 
+#[repr(C)]
 struct BMString(BytesMut);
 
 impl ToString for BMString {
@@ -225,5 +229,3 @@ mod tests {
         })
     }
 }
-
-