Partial implementation of a collection oriented interface for ROSE. (Checking in to create version to diff against.)

benchmarks/Makefile.am

@@ -3,11 +3,14 @@ LDADD=$(top_builddir)/src/stasis/libstasis.la  \
 
 
 rose_SOURCES=rose.cpp
+roseTable_SOURCES=roseTable.cpp
 
 if BUILD_BENCHMARKS
-noinst_PROGRAMS=lhtableThreaded naiveHash logicalHash readLogicalHash naiveMultiThreaded logicalMultThreaded rawSet \
+noinst_PROGRAMS=lhtableThreaded naiveHash logicalHash readLogicalHash \
-	     arrayListSet logicalMultiReaders linearHashNTA linkedListNTA pageOrientedListNTA  \
+  naiveMultiThreaded logicalMultThreaded rawSet arrayListSet \
-	     linearHashNTAThreaded linearHashNTAMultiReader linearHashNTAWriteRequests transitiveClosure zeroCopy sequentialThroughput rose
+  logicalMultiReaders linearHashNTA linkedListNTA pageOrientedListNTA  \
+  linearHashNTAThreaded linearHashNTAMultiReader linearHashNTAWriteRequests \
+  transitiveClosure zeroCopy sequentialThroughput rose roseTable
 endif
 AM_CFLAGS=${GLOBAL_CFLAGS}
 AM_CXXFLAGS=${GLOBAL_CXXFLAGS} -I ${top_builddir}/src

benchmarks/rose.cpp

@@ -47,6 +47,8 @@ using rose::mergeThread;
 using rose::compressData;
 using rose::tv_to_double; // XXX
 
+using rose::initPage;
+
 static const int32_t GB = 1024 * 1024 * 1024;
 
 static int lsm_sim;  // XXX this global variable shouldn't be global!
@@ -54,6 +56,7 @@ static int lsm_sim;  // XXX this global variable shouldn't be global!
 
 #define FIRST_PAGE 1
 
+#define FAST_ALLOC 6
 /**
    Bypass stasis' allocation mechanisms.  Stasis' page allocation
    costs should be minimal, but this program doesn't support
@@ -350,8 +353,6 @@ void run_test(unsigned int inserts, column_number_t column_count,
 
   int num_pages = 0;
 
-  TlsmSetPageAllocator(roseFastAlloc, &num_pages);
-
   Tinit();
 
   recordid tree = NULLRID;
@@ -361,7 +362,7 @@ void run_test(unsigned int inserts, column_number_t column_count,
   pthread_cond_t  block_ready_cond = PTHREAD_COND_INITIALIZER;
   int max_waiters = 3; // merged, old, new.
   if(lsm_sim) {
-    struct insert_args<PAGELAYOUT,ENGINE,ITER,ROW,TYPE> args = {
+    struct insert_args<PAGELAYOUT,ENGINE,ITER,ROW> args = {
       comparator_idx,
       rowsize,
       &begin,
@@ -385,7 +386,13 @@ void run_test(unsigned int inserts, column_number_t column_count,
                    &args);
     pthread_t merger;
     pthread_create(&merger, 0,
-                   (void*(*)(void*))mergeThread<PAGELAYOUT,ENGINE,ITER,ROW,TYPE>,
+                   (void*(*)(void*))mergeThread
+		     <PAGELAYOUT,
+                      ENGINE,
+		      treeIterator<ROW,PAGELAYOUT>,
+		      treeIterator<ROW,PAGELAYOUT>,
+		      ROW,
+		      TYPE>,
                    &args);
 
     pthread_join(inserter,0);
@@ -398,11 +405,11 @@ void run_test(unsigned int inserts, column_number_t column_count,
   gettimeofday(&start_tv, 0);
 
   if(buildTree) {
-    tree = TlsmCreate(-1, comparator_idx,rowsize);
+    tree = TlsmCreate(-1, comparator_idx, roseFastAlloc, &num_pages, rowsize);
   }
 
   uint64_t insertedByCompress;
-  compressData<PAGELAYOUT,ENGINE,TYPE,ITER,ROW>
+  compressData<PAGELAYOUT,ENGINE,TYPE,ROW,ITER>
     (&begin, &end,buildTree,tree,roseFastAlloc,(void*)&num_pages,
      &insertedByCompress);
 

benchmarks/roseTable.cpp

@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <errno.h>
+#include "stasis/operations/lsmTable.h"
+
+#include "stasis/transactional.h"
+
+#include "stasis/page/compression/multicolumn-impl.h"
+#include "stasis/page/compression/for-impl.h"
+#include "stasis/page/compression/rle-impl.h"
+#include "stasis/page/compression/staticTuple.h"
+#include "stasis/page/compression/pageLayout.h"
+
+typedef int32_t val_t; // XXX want multiple types!
+
+namespace rose {
+  template<class PAGELAYOUT>
+  int main(int argc, char **argv) {
+    static int cmp_num = 1;
+    static int init_num = 1;
+
+    unlink("storefile.txt");
+    unlink("logfile.txt");
+
+    sync();
+
+    bufferManagerNonBlockingSlowHandleType = IO_HANDLE_PFILE;
+
+    Tinit();
+
+    int xid = Tbegin();
+
+    recordid lsmTable = TlsmTableAlloc<PAGELAYOUT>(xid);
+
+    Tcommit(xid);
+
+    TlsmTableStart<PAGELAYOUT>(lsmTable);
+
+    TlsmTableStop<PAGELAYOUT>(lsmTable);
+
+    Tdeinit();
+
+    printf("test\n");
+  }
+}
+
+int main(int argc, char **argv) {
+  typedef rose::StaticTuple<4,int64_t,int32_t,int16_t,int8_t> tup;
+  // XXX multicolumn is deprecated; want static dispatch!
+  return rose::main
+    <rose::SingleColumnTypePageLayout
+      <rose::Multicolumn<tup>,rose::Rle<val_t> > >
+    (argc,argv);
+}

src/stasis/operations/lsmIterators.h

@@ -22,10 +22,21 @@
 
 namespace rose {
 
-template <class ITER, class ROW> class mergeIterator;
+template <class ITERA, class ITERB, class ROW> class mergeIterator;
+
+template <class ITERA, class ITERB, class ROW>
+inline const byte * toByteArray(mergeIterator<ITERA,ITERB,ROW> * const t);
+
+
+template <class ITER, class ROW> class versioningIterator;
 
 template <class ITER, class ROW>
-inline const byte * toByteArray(mergeIterator<ITER,ROW> * const t);
+inline const byte * toByteArray(versioningIterator<ITER,ROW> * const t);
+
+
+template <class STLITER, class ROW> class stlSetIterator;
+template <class STLITER, class ROW>
+inline const byte * toByteArray(stlSetIterator<STLITER,ROW> * const t);
 
 
 /**
@@ -154,12 +165,9 @@ class treeIterator {
    This iterator takes two otehr iterators as arguments, and merges
    their output, dropping duplicate entries.
 
-   @todo LSM tree is not be very useful without support for deletion
+   It does not understand versioning or tombstones.
-         (and, therefore, versioning).  Such support will require
-         modifications to mergeIterator (or perhaps, a new iterator
-         class).
  */
-template<class ITER, class ROW>
+template<class ITERA, class ITERB, class ROW>
 class mergeIterator {
  private:
   static const int A = 0;
@@ -192,7 +200,7 @@ class mergeIterator {
     return cur;
   }
  public:
-  mergeIterator(ITER & a, ITER & b, ITER & aend, ITER & bend) :
+  mergeIterator(ITERA & a, ITERB & b, ITERA & aend, ITERB & bend) :
     off_(0),
     a_(a),
     b_(b),
@@ -211,7 +219,7 @@ class mergeIterator {
     before_eof_(i.before_eof_)
   { }
 
-  ROW& operator* () {
+  const ROW& operator* () {
     if(curr_ == A || curr_ == BOTH) { return *a_; }
     if(curr_ == B) { return *b_; }
     abort();
@@ -272,19 +280,153 @@ class mergeIterator {
   inline unsigned int offset() { return off_; }
  private:
   unsigned int off_;
-  ITER a_;
+  ITERA a_;
-  ITER b_;
+  ITERB b_;
-  ITER aend_;
+  ITERA aend_;
-  ITER bend_;
+  ITERB bend_;
   int curr_;
   int before_eof_;
-  friend const byte* toByteArray<ITER,ROW>(mergeIterator<ITER,ROW> * const t);
+  friend const byte*
+    toByteArray<ITERA,ITERB,ROW>(mergeIterator<ITERA,ITERB,ROW> * const t);
 };
 
+/**
+   This iterator takes an iterator that produces rows with versioning
+   information.  The rows should be sorted based on value, then sorted by
+   version, with the newest value first.
+ */
+template<class ITER, class ROW>
+class versioningIterator {
+ public:
+   versioningIterator(ITER & a, ITER & aend,
+		      int beginning_of_time) :
+    a_(a),
+    aend_(aend),
+    check_tombstone_(0),
+    tombstone_(0),
+    off_(0)
+  {}
+  explicit versioningIterator(versioningIterator &i) :
+    a_(i.a_),
+    aend_(i.aend_),
+    check_tombstone_(i.check_tombstone_),
+    tombstone_(i.tombstone_),
+    off_(i.off_)
+  {}
+
+  ROW& operator* () {
+    return *a_;
+  }
+  void seekEnd() {
+    a_ = aend_; // XXX good idea?
+  }
+  inline bool operator==(const versioningIterator &o) const {
+    return a_ == o.a_;
+  }
+  inline bool operator!=(const versioningIterator &o) const {
+    return !(*this == o);
+  }
+  inline void operator++() {
+    if(check_tombstone_) {
+      do {
+	++a_;
+      } while(a_ != aend_ && *a_ == tombstone_);
+    } else {
+      ++a_;
+    }
+    if((*a_).tombstone()) {
+      tombstone_.copyFrom(*a_);
+      check_tombstone_ = 1;
+    } else {
+      check_tombstone_ = 0;
+    }
+    off_++;
+  }
+  inline void operator--() {
+    --a_;
+    // need to remember that we backed up so that ++ can work...
+    // the cursor is always positioned on a live value, and -- can
+    // only be followed by ++, so this should do the right thing.
+    check_tombstone_ = 0;
+    off_--;
+  }
+  inline int  operator-(versioningIterator&i) {
+    return off_ - i.off_;
+  }
+  inline void operator=(versioningIterator const &i) {
+    a_ = i.a_;
+    aend_ = i.aend_;
+    check_tombstone_ = i.check_tombstone_;
+    tombstone_ = i.tombstone_;
+    //    scratch_ = *a_;
+    off_ = i.off_;
+  }
+  inline unsigned int offset() { return off_; }
+ private:
+  //  unsigned int off_;
+  ITER a_;
+  ITER aend_;
+  int check_tombstone_;
+  ROW tombstone_;
+  //  ROW &scratch_;
+  off_t off_;
+  //  int before_eof_;
+  //  typeof(ROW::TIMESTAMP) beginning_of_time_;
+  friend const byte*
+    toByteArray<ITER,ROW>(versioningIterator<ITER,ROW> * const t);
+};
+
+/**
+   This iterator takes an iterator that produces rows with versioning
+   information.  The rows should be sorted based on value, then sorted by
+   version, with the newest value first.
+ */
+ template<class STLITER,class ROW> class stlSetIterator {
+ public:
+   stlSetIterator( STLITER& it, STLITER& itend ) : it_(it), itend_(itend) {}
+   explicit stlSetIterator(stlSetIterator &i) : it_(i.it_), itend_(i.itend_){}
+   const ROW& operator* () { return *it_; }
+
+  void seekEnd() {
+    it_ = itend_; // XXX good idea?
+  }
+  stlSetIterator * end() { return new stlSetIterator(itend_,itend_); }
+  inline bool operator==(const stlSetIterator &o) const {
+    return it_ == o.it_;
+  }
+  inline bool operator!=(const stlSetIterator &o) const {
+    return !(*this == o);
+  }
+  inline void operator++() {
+    ++it_;
+  }
+  inline void operator--() {
+    --it_;
+  }
+  inline int  operator-(stlSetIterator&i) {
+    return it_ - i.it_;
+  }
+  inline void operator=(stlSetIterator const &i) {
+    it_ = i.it_;
+    itend_ = i.itend_;
+  }
+  //  inline unsigned int offset() { return off_; }
+ private:
+  //  unsigned int off_;
+  STLITER it_;
+  STLITER itend_;
+  friend const byte*
+    toByteArray<STLITER,ROW>(stlSetIterator<STLITER,ROW> * const t);
+};
+
+template <class STLITER,class ROW> 
+inline const byte * toByteArray(stlSetIterator<STLITER,ROW> * const t) {
+  return (*(t->it_)).toByteArray();
+}
 /** Produce a byte array from the value stored at t's current
     position */
-template <class ITER, class ROW>
+template <class ITERA, class ITERB, class ROW>
-inline const byte * toByteArray(mergeIterator<ITER,ROW> * const t) {
+  inline const byte * toByteArray(mergeIterator<ITERA,ITERB,ROW> * const t) {
   if(t->curr_ == t->A || t->curr_ == t->BOTH) {
     return toByteArray(&t->a_);
   } else if(t->curr_ == t->B) {
@@ -293,12 +435,19 @@ inline const byte * toByteArray(mergeIterator<ITER,ROW> * const t) {
   abort();
 }
 
+/** Produce a byte array from the value stored at t's current
+    position */
+ template <class ITER, class ROW>
+   inline const byte * toByteArray(versioningIterator<ITER,ROW> * const t) {
+   return toByteArray(&t->a_);
+ }
+
 template <class PAGELAYOUT>
 inline const byte* toByteArray(treeIterator<int,PAGELAYOUT> *const t) {
   return (const byte*)&(**t);
 }
-template <class PAGELAYOUT,class TYPE>
+template <class PAGELAYOUT,class ROW>
-inline const byte* toByteArray(treeIterator<Tuple<TYPE>,PAGELAYOUT> *const t) {
+inline const byte* toByteArray(treeIterator<ROW,PAGELAYOUT> *const t) {
   return (**t).toByteArray();
 }
 

src/stasis/operations/lsmTable.h

@@ -0,0 +1,311 @@
+#ifndef _ROSE_COMPRESSION_LSMTABLE_H__
+#define _ROSE_COMPRESSION_LSMTABLE_H__
+
+#undef end
+#undef begin
+
+#include <set>
+#include "lsmIterators.h"
+
+namespace rose {
+  /**
+     @file
+
+     This file contains worker threads and the end user interface for Rose's
+     LSM-tree based table implementation.  The page format is set at compile
+     time with a template instantiation.
+
+     @see lsmWorkers.h provides a more general (and dynamically
+     dispatched), interface to the underlying primititves
+  */
+
+
+  template<class PAGELAYOUT>
+    struct new_insert_args {
+      int comparator_idx;
+      int rowsize; //typedef int32_t val_t;
+      //  ITER *begin;
+      //  ITER *end;
+      pageid_t(*pageAlloc)(int,void*);
+      void *pageAllocState;
+      pthread_mutex_t * block_ready_mut;
+      pthread_cond_t * block_needed_cond;
+      pthread_cond_t * block_ready_cond;
+      int max_waiters;
+      int wait_count;
+      recordid * wait_queue;
+      typename PAGELAYOUT::FMT::TUP *scratchA;
+      typename PAGELAYOUT::FMT::TUP *scratchB;
+      pageid_t mergedPages;
+    };
+
+  template <class PAGELAYOUT, class ITER>
+    pageid_t compressData(ITER * begin, ITER * end, recordid tree,
+			  pageid_t (*pageAlloc)(int,void*),
+			  void *pageAllocState, uint64_t *inserted) {
+    *inserted = 0;
+
+    if(*begin == *end) {
+      return 0;
+    }
+    pageid_t next_page = pageAlloc(-1,pageAllocState);
+    Page *p = loadPage(-1, next_page);
+    pageid_t pageCount = 0;
+
+    if(*begin != *end) {
+      TlsmAppendPage(-1,tree,toByteArray(begin),pageAlloc,pageAllocState,p->id);
+    }
+    pageCount++;
+
+    typename PAGELAYOUT::FMT * mc = PAGELAYOUT::initPage(p, &**begin);
+
+    int lastEmpty = 0;
+
+    for(ITER i(*begin); i != *end; ++i) {
+      rose::slot_index_t ret = mc->append(-1, *i);
+
+      (*inserted)++;
+
+      if(ret == rose::NOSPACE) {
+	p->dirty = 1;
+	mc->pack();
+	releasePage(p);
+
+	--(*end);
+	if(i != *end) {
+	  next_page = pageAlloc(-1,pageAllocState);
+	  p = loadPage(-1, next_page);
+
+	  mc = PAGELAYOUT::initPage(p, &*i);
+
+	  TlsmAppendPage(-1,tree,toByteArray(&i),pageAlloc,pageAllocState,p->id);
+
+	  pageCount++;
+	  lastEmpty = 0;
+	} else {
+	  lastEmpty = 1;
+	}
+	++(*end);
+	--i;
+      }
+    }
+
+    p->dirty = 1;
+    mc->pack();
+    releasePage(p);
+    return pageCount;
+  }
+
+
+  /**
+     ITERA is an iterator over the data structure that mergeThread creates (a lsm tree iterator).
+     ITERB is an iterator over the data structures that mergeThread takes as input (lsm tree, or rb tree..)
+  */
+  template<class PAGELAYOUT, class ITERA, class ITERB> //class PAGELAYOUTX, class ENGINE, class ITERA, class ITERB,
+    //  class ROW, class TYPE>
+    void* mergeThread(void* arg) {
+    // The ITER argument of a is unused (we don't look at it's begin or end fields...)
+    //insert_args<PAGELAYOUT,ENGINE,ITERA,ROW>* a =
+    //    (insert_args<PAGELAYOUT,ENGINE,ITERA,ROW>*)arg;
+    new_insert_args<PAGELAYOUT> * a = (new_insert_args<PAGELAYOUT>*)arg;
+
+    struct timeval start_tv, wait_tv, stop_tv;
+
+    int merge_count = 0;
+    // loop around here to produce multiple batches for merge.
+    while(1) {
+
+      gettimeofday(&start_tv,0);
+
+      pthread_mutex_lock(a->block_ready_mut);
+      while(a->wait_count <2) {
+	pthread_cond_wait(a->block_ready_cond,a->block_ready_mut);
+      }
+
+      gettimeofday(&wait_tv,0);
+
+      recordid * oldTreeA = &a->wait_queue[0];
+      recordid * oldTreeB = &a->wait_queue[1];
+
+      pthread_mutex_unlock(a->block_ready_mut);
+
+      recordid tree = TlsmCreate(-1, a->comparator_idx,a->pageAlloc,a->pageAllocState,a->rowsize);
+
+      ITERA taBegin(*oldTreeA,*(a->scratchA),a->rowsize);
+      ITERB tbBegin(*oldTreeB,*(a->scratchB),a->rowsize);
+
+      ITERA *taEnd = taBegin.end();
+      ITERB *tbEnd = tbBegin.end();
+
+      mergeIterator<ITERA, ITERB, typename PAGELAYOUT::FMT::TUP>
+	mBegin(taBegin, tbBegin, *taEnd, *tbEnd);
+
+      mergeIterator<ITERA, ITERB, typename PAGELAYOUT::FMT::TUP>
+	mEnd(taBegin, tbBegin, *taEnd, *tbEnd);
+
+
+      mEnd.seekEnd();
+      uint64_t insertedTuples;
+      pageid_t mergedPages = compressData<PAGELAYOUT,mergeIterator<ITERA,ITERB,typename PAGELAYOUT::FMT::TUP> >
+	(&mBegin, &mEnd,tree,a->pageAlloc,a->pageAllocState,&insertedTuples);
+      delete taEnd;
+      delete tbEnd;
+
+      gettimeofday(&stop_tv,0);
+
+      pthread_mutex_lock(a->block_ready_mut);
+
+      a->mergedPages = mergedPages;
+
+      // TlsmFree(wait_queue[0])  /// XXX Need to implement (de)allocation!
+      // TlsmFree(wait_queue[1])
+
+      memcpy(&a->wait_queue[0],&tree,sizeof(tree));
+      for(int i = 1; i + 1 < a->wait_count; i++) {
+	memcpy(&a->wait_queue[i],&a->wait_queue[i+1],sizeof(tree));
+      }
+      a->wait_count--;
+      pthread_mutex_unlock(a->block_ready_mut);
+
+      merge_count++;
+
+      double wait_elapsed  = tv_to_double(wait_tv) - tv_to_double(start_tv);
+      double work_elapsed  = tv_to_double(stop_tv) - tv_to_double(wait_tv);
+      double total_elapsed = wait_elapsed + work_elapsed;
+      double ratio = ((double)(insertedTuples * (uint64_t)a->rowsize))
+	/ (double)(PAGE_SIZE * mergedPages);
+      double throughput = ((double)(insertedTuples * (uint64_t)a->rowsize))
+	/ (1024.0 * 1024.0 * total_elapsed);
+
+      printf("merge # %-6d: comp ratio: %-9.3f  waited %6.1f sec   "
+	     "worked %6.1f sec inserts %-12ld (%9.3f mb/s)\n", merge_count, ratio,
+	     wait_elapsed, work_elapsed, (unsigned long)insertedTuples, throughput);
+
+      pthread_cond_signal(a->block_needed_cond);
+    }
+    return 0;
+  }
+  /*
+
+    template<class PAGELAYOUT, class ITER>
+    void* insertThread(void* arg) {
+
+    new_insert_args<PAGELAYOUT> * a = (new_insert_args<PAGELAYOUT>*)arg;
+    struct timeval start_tv, start_wait_tv, stop_tv;
+
+    int insert_count = 0;
+
+    pageid_t lastTreeBlocks = 0;
+    uint64_t lastTreeInserts = 0;
+    pageid_t desiredInserts = 0;
+
+    // this is a hand-tuned value; it should be set dynamically, not staticly
+    double K = 0.18;
+
+    // loop around here to produce multiple batches for merge.
+    while(1) {
+    gettimeofday(&start_tv,0);
+    // XXX this needs to be an iterator over an in-memory tree.
+    ITER i(*(a->begin));
+    ITER j(desiredInserts ? *(a->begin) : *(a->end));
+    if(desiredInserts) {
+    j += desiredInserts;
+    }
+    recordid tree = TlsmCreate(-1, a->comparator_idx,a->rowsize);
+    lastTreeBlocks =
+    compressData<PAGELAYOUT,PAGELAYOUT::init_page,ITER>
+    (&i, &j,1,tree,a->pageAlloc,a->pageAllocState, &lastTreeInserts);
+
+    gettimeofday(&start_wait_tv,0);
+    pthread_mutex_lock(a->block_ready_mut);
+    while(a->wait_count >= a->max_waiters) {
+    pthread_cond_wait(a->block_needed_cond,a->block_ready_mut);
+    }
+
+    memcpy(&a->wait_queue[a->wait_count],&tree,sizeof(recordid));
+    a->wait_count++;
+
+    pthread_cond_signal(a->block_ready_cond);
+    gettimeofday(&stop_tv,0);
+    double work_elapsed = tv_to_double(start_wait_tv) - tv_to_double(start_tv);
+    double wait_elapsed = tv_to_double(stop_tv) - tv_to_double(start_wait_tv);
+    double elapsed = tv_to_double(stop_tv) - tv_to_double(start_tv);
+    printf("insert# %-6d                         waited %6.1f sec   "
+    "worked %6.1f sec inserts %-12ld (%9.3f mb/s)\n",
+    ++insert_count,
+    wait_elapsed,
+    work_elapsed,
+    (long int)lastTreeInserts,
+    (lastTreeInserts*(uint64_t)a->rowsize / (1024.0*1024.0)) / elapsed);
+
+    if(a->mergedPages != -1) {
+    desiredInserts = (pageid_t)(((double)a->mergedPages / K)
+    * ((double)lastTreeInserts
+    / (double)lastTreeBlocks));
+    }
+    pthread_mutex_unlock(a->block_ready_mut);
+
+    }
+    return 0;
+    }
+  */
+  typedef struct {
+    recordid bigTree;
+    recordid bigTreeAllocState; // this is probably the head of an arraylist of regions used by the tree...
+    recordid mediumTree;
+    recordid mediumTreeAllocState;
+    epoch_t beginning;
+    epoch_t end;
+  } lsmTableHeader_t;
+
+  template<class PAGELAYOUT>
+    inline recordid TlsmTableAlloc(int xid) {
+
+    // XXX use a (slow) page allocator in alloc, then create a new
+    // (fast) region allocator in start.
+
+    recordid ret = Talloc(xid, sizeof(lsmTableHeader_t));
+    lsmTableHeader_t h;
+    h.bigTreeAllocState = Talloc(xid,sizeof(TlsmRegionAllocConf_t));
+    Tset(xid,h.bigTreeAllocState,&LSM_REGION_ALLOC_STATIC_INITIALIZER);
+    h.bigTree = TlsmCreate(xid, PAGELAYOUT::cmp_id(),
+			   TlsmRegionAllocRid,&h.bigTreeAllocState,
+			   PAGELAYOUT::FMT::TUP::sizeofBytes());
+    h.mediumTreeAllocState = Talloc(xid,sizeof(TlsmRegionAllocConf_t));
+    Tset(xid,h.mediumTreeAllocState,&LSM_REGION_ALLOC_STATIC_INITIALIZER);
+    h.mediumTree = TlsmCreate(xid, PAGELAYOUT::cmp_id(),
+			      TlsmRegionAllocRid,&h.mediumTreeAllocState,
+			      PAGELAYOUT::FMT::TUP::sizeofBytes());
+    epoch_t beginning = 0;
+    epoch_t end = 0;
+    Tset(xid, ret, &h);
+    return ret;
+  }
+  template<class PAGELAYOUT>
+    void TlsmTableStart(recordid tree) {
+    /// XXX xid for daemon processes?
+
+    void * (*merger)(void*) = mergeThread
+      <PAGELAYOUT,
+      treeIterator<typename PAGELAYOUT::FMT::TUP, typename PAGELAYOUT::FMT>,
+      treeIterator<typename PAGELAYOUT::FMT::TUP, typename PAGELAYOUT::FMT> >;
+
+    /*mergeThread
+      <PAGELAYOUT,
+      treeIterator<typename PAGELAYOUT::FMT::TUP, typename PAGELAYOUT::FMT>,
+      stlSetIterator<typename std::set<typename PAGELAYOUT::FMT::TUP,
+                     typename PAGELAYOUT::FMT::TUP::stl_cmp>::iterator,
+                     typename PAGELAYOUT::FMT::TUP> > 
+		     (0); */
+
+    lsmTableHeader_t h;
+    Tread(-1, tree, &h);
+
+  }
+  template<class PAGELAYOUT>
+    void TlsmTableStop(recordid tree) {
+
+  }
+}
+
+#endif  // _ROSE_COMPRESSION_LSMTABLE_H__

src/stasis/operations/lsmTree.c

@@ -8,12 +8,40 @@
 #include <pthread.h>
 
 static lsm_comparator_t comparators[MAX_LSM_COMPARATORS];
+static lsm_page_initializer_t initializers[MAX_LSM_PAGE_INITIALIZERS];
+
+TlsmRegionAllocConf_t LSM_REGION_ALLOC_STATIC_INITIALIZER =
+  { -1, -1, 1000 };
+
+pageid_t TlsmRegionAlloc(int xid, void *conf) {
+  TlsmRegionAllocConf_t * a = (TlsmRegionAllocConf_t*)conf;
+  if(a->nextPage == a->endOfRegion) {
+    a->nextPage = TregionAlloc(xid, a->regionSize,0);
+    a->endOfRegion = a->nextPage + a->regionSize;
+  }
+  pageid_t ret = a->nextPage;
+  (a->nextPage)++;
+  return ret;
+}
+
+pageid_t TlsmRegionAllocRid(int xid, void * ridp) {
+  recordid rid = *(recordid*)ridp;
+  TlsmRegionAllocConf_t conf;
+  Tread(xid,rid,&conf);
+  pageid_t ret = TlsmRegionAlloc(xid,&conf);
+  // XXX get rid of Tset by storing next page in memory, and losing it
+  //     on crash.
+  Tset(xid,rid,&conf);
+  return ret;
+}
 
 void lsmTreeRegisterComparator(int id, lsm_comparator_t i) {
   // XXX need to de-init this somewhere... assert(!comparators[id]);
   comparators[id] = i;
 }
-
+void lsmTreeRegisterPageInitializer(int id, lsm_page_initializer_t i) {
+  initializers[id] = i;
+}
 
 #define HEADER_SIZE (2 * sizeof(lsmTreeNodeRecord))
 
@@ -76,20 +104,6 @@ void lsmTreeRegisterComparator(int id, lsm_comparator_t i) {
 
 */
 
-static pageid_t defaultAllocator(int xid, void *ignored) {
-  return TpageAlloc(xid);
-}
-
-static pageid_t (*pageAllocator)(int xid, void *ignored) = defaultAllocator;
-static void *pageAllocatorConfig;
-void TlsmSetPageAllocator(pageid_t (*allocer)(int xid, void * ignored),
-                          void * config) {
-  pageAllocator = allocer;
-  pageAllocatorConfig = config;
-}
-
-
-
 typedef struct lsmTreeState {
   pageid_t lastLeaf;
 } lsmTreeState;
@@ -197,13 +211,15 @@ void writeNodeRecordVirtualMethods(int xid, Page *p, int slot,
   stasis_page_lsn_write(xid, p, 0); // XXX need real LSN?
 }
 
-recordid TlsmCreate(int xid, int comparator, int keySize) {
+recordid TlsmCreate(int xid, int comparator,
+		    lsm_page_allocator_t allocator, void *allocator_state,
+		    int keySize) {
 
   // can the pages hold at least two keys?
   assert(HEADER_SIZE + 2 * (sizeof(lsmTreeNodeRecord) +keySize) <
          USABLE_SIZE_OF_PAGE - 2 * sizeof(short));
 
-  pageid_t root = pageAllocator(xid, pageAllocatorConfig);
+  pageid_t root = allocator(xid, allocator_state); //pageAllocatorConfig);
   DEBUG("Root = %lld\n", root);
   recordid ret = { root, 0, 0 };
 
@@ -244,13 +260,15 @@ recordid TlsmCreate(int xid, int comparator, int keySize) {
 
 static recordid buildPathToLeaf(int xid, recordid root, Page *root_p,
                                 int depth, const byte *key, size_t key_len,
-                                pageid_t val_page, pageid_t lastLeaf) {
+                                pageid_t val_page, pageid_t lastLeaf,
+				lsm_page_allocator_t allocator,
+				void *allocator_state) {
   // root is the recordid on the root page that should point to the
   // new subtree.
   assert(depth);
   DEBUG("buildPathToLeaf(depth=%d) (lastleaf=%lld) called\n",depth, lastLeaf);
 
-  pageid_t child = pageAllocator(xid, pageAllocatorConfig); // XXX Use some other function...
+  pageid_t child = allocator(xid,allocator_state);
   DEBUG("new child = %lld internal? %d\n", child, depth-1);
 
   Page *child_p = loadPage(xid, child);
@@ -266,7 +284,7 @@ static recordid buildPathToLeaf(int xid, recordid root, Page *root_p,
     stasis_record_alloc_done(xid, child_p, child_rec);
 
     ret = buildPathToLeaf(xid, child_rec, child_p, depth-1, key, key_len,
-                      val_page,lastLeaf);
+			  val_page,lastLeaf, allocator, allocator_state);
 
     unlock(child_p->rwlatch);
     releasePage(child_p);
@@ -328,7 +346,9 @@ static recordid buildPathToLeaf(int xid, recordid root, Page *root_p,
 static recordid appendInternalNode(int xid, Page *p,
                                    int depth,
                                    const byte *key, size_t key_len,
-                                   pageid_t val_page, pageid_t lastLeaf) {
+                                   pageid_t val_page, pageid_t lastLeaf,
+				   lsm_page_allocator_t allocator,
+				   void *allocator_state) {
   assert(*stasis_page_type_ptr(p) == LSM_ROOT_PAGE || 
 	 *stasis_page_type_ptr(p) == FIXED_PAGE);
   if(!depth) {
@@ -350,7 +370,7 @@ static recordid appendInternalNode(int xid, Page *p,
       Page *child_page = loadPage(xid, child_id);
       writelock(child_page->rwlatch,0);
       ret = appendInternalNode(xid, child_page, depth-1, key, key_len,
-                               val_page, lastLeaf);
+                               val_page, lastLeaf, allocator, allocator_state);
 
       unlock(child_page->rwlatch);
       releasePage(child_page);
@@ -360,7 +380,7 @@ static recordid appendInternalNode(int xid, Page *p,
       if(ret.size != INVALID_SLOT) {
         stasis_record_alloc_done(xid, p, ret);
         ret = buildPathToLeaf(xid, ret, p, depth, key, key_len, val_page,
-                              lastLeaf);
+                              lastLeaf, allocator, allocator_state);
 
         DEBUG("split tree rooted at %lld, wrote value to {%d %d %lld}\n",
               p->id, ret.page, ret.slot, ret.size);
@@ -418,6 +438,7 @@ static pageid_t findFirstLeaf(int xid, Page *root, int depth) {
 }
 recordid TlsmAppendPage(int xid, recordid tree,
                         const byte *key,
+			lsm_page_allocator_t allocator, void *allocator_state,
                         long val_page) {
   Page *p = loadPage(xid, tree.page);
   writelock(p->rwlatch, 0);
@@ -461,12 +482,13 @@ recordid TlsmAppendPage(int xid, recordid tree,
 
     assert(tree.page == p->id);
     ret = appendInternalNode(xid, p, depth, key, keySize, val_page,
-                             s->lastLeaf == tree.page ? -1 : s->lastLeaf);
+			     s->lastLeaf == tree.page ? -1 : s->lastLeaf,
+			     allocator, allocator_state);
 
     if(ret.size == INVALID_SLOT) {
       DEBUG("Need to split root; depth = %d\n", depth);
 
-      pageid_t child = pageAllocator(xid, pageAllocatorConfig);
+      pageid_t child = allocator(xid, allocator_state);
       Page *lc = loadPage(xid, child);
       writelock(lc->rwlatch,0);
 
@@ -519,7 +541,8 @@ recordid TlsmAppendPage(int xid, recordid tree,
 
       assert(tree.page == p->id);
       ret = appendInternalNode(xid, p, depth, key, keySize, val_page,
-                               s->lastLeaf == tree.page ? -1 : s->lastLeaf);
+                               s->lastLeaf == tree.page ? -1 : s->lastLeaf,
+			       allocator, allocator_state);
 
       assert(ret.size != INVALID_SLOT);
 
@@ -625,8 +648,8 @@ pageid_t TlsmFindPage(int xid, recordid tree, const byte *key) {
 
   size_t keySize = getKeySize(xid,p);
 
-  const lsmTreeNodeRecord *depth_nr = readNodeRecord(xid, p , 0, keySize);
+  const lsmTreeNodeRecord *depth_nr = readNodeRecord(xid, p , DEPTH, keySize);
-  const lsmTreeNodeRecord *cmp_nr = readNodeRecord(xid, p , 1, keySize);
+  const lsmTreeNodeRecord *cmp_nr = readNodeRecord(xid, p , COMPARATOR, keySize);
 
   int depth = depth_nr->ptr;
 

src/stasis/operations/lsmWorkers.h

@@ -22,12 +22,7 @@ inline const byte * toByteArray(Tuple<val_t>::iterator * const t) {
   return (**t).toByteArray();
 }
 
-double tv_to_double(struct timeval tv) {
+template<class PAGELAYOUT,class ENGINE,class ITER,class ROW>
-  return static_cast<double>(tv.tv_sec) +
-      (static_cast<double>(tv.tv_usec) / 1000000.0);
-}
-
-template<class PAGELAYOUT,class ENGINE,class ITER,class ROW,class TYPE>
 struct insert_args {
   int comparator_idx;
   int rowsize;typedef int32_t val_t;
@@ -51,34 +46,34 @@ struct insert_args {
    passed into them, and allocate a new PAGELAYOUT object of the
    appropriate type.
 */
-template <class COMPRESSOR, class TYPE>
+template <class COMPRESSOR, class TYPE, class ROW>
-static Pstar<COMPRESSOR, TYPE> * initPage(Pstar<COMPRESSOR,TYPE> **pstar,
+inline Pstar<COMPRESSOR, TYPE> * initPage(Pstar<COMPRESSOR,TYPE> **pstar,
-					  Page *p, TYPE current) {
+					  Page *p, const TYPE current) {
   *pstar = new Pstar<COMPRESSOR, TYPE>(-1, p);
   (*pstar)->compressor()->offset(current);
   return *pstar;
 }
-template <class COMPRESSOR, class TYPE>
+template <class COMPRESSOR, class TYPE, class ROW>
-static Pstar<COMPRESSOR, TYPE> * initPage(Pstar<COMPRESSOR,TYPE> **pstar,
+inline Pstar<COMPRESSOR, TYPE> * initPage(Pstar<COMPRESSOR,TYPE> **pstar,
-					  Page *p, Tuple<TYPE> & current) {
+					  Page *p, const ROW & current) {
   *pstar = new Pstar<COMPRESSOR, TYPE>(-1, p);
   (*pstar)->compressor()->offset(current);
   return *pstar;
 }
 
-template <class COMPRESSOR, class TYPE >
+template <class COMPRESSOR, class TYPE, class ROW >
-static Multicolumn<Tuple<TYPE> > * initPage(Multicolumn<Tuple<TYPE> > ** mc,
+inline Multicolumn<ROW> * initPage(Multicolumn<ROW> ** mc,
-					    Page *p, Tuple<TYPE> & t) {
+					    Page *p, const ROW & t) {
   column_number_t column_count = t.column_count();
   plugin_id_t plugin_id =
-    rose::plugin_id<Multicolumn<Tuple<TYPE> >,COMPRESSOR,TYPE>();
+    rose::plugin_id<Multicolumn<ROW>,COMPRESSOR,TYPE>();
 
   plugin_id_t * plugins = new plugin_id_t[column_count];
   for(column_number_t c = 0; c < column_count; c++) {
     plugins[c] = plugin_id;
   }
 
-  *mc = new Multicolumn<Tuple<TYPE> >(-1,p,column_count,plugins);
+  *mc = new Multicolumn<ROW>(-1,p,column_count,plugins);
   for(column_number_t c = 0; c < column_count; c++) {
     ((COMPRESSOR*)(*mc)->compressor(c))->offset(*t.get(c));
   }
@@ -86,16 +81,16 @@ static Multicolumn<Tuple<TYPE> > * initPage(Multicolumn<Tuple<TYPE> > ** mc,
   delete [] plugins;
   return *mc;
 }
-template <class COMPRESSOR, class TYPE >
+template <class COMPRESSOR, class TYPE, class ROW >
-static Multicolumn<Tuple<TYPE> > * initPage(Multicolumn<Tuple<TYPE> > ** mc,
+inline Multicolumn<ROW> * initPage(Multicolumn<ROW> ** mc,
-					    Page *p, TYPE t) {
+					    Page *p, const TYPE t) {
   plugin_id_t plugin_id =
-    rose::plugin_id<Multicolumn<Tuple<TYPE> >,COMPRESSOR,TYPE>();
+    rose::plugin_id<Multicolumn<ROW>,COMPRESSOR,TYPE>();
 
   plugin_id_t * plugins = new plugin_id_t[1];
   plugins[0] = plugin_id;
 
-  *mc = new Multicolumn<Tuple<TYPE> >(-1,p,1,plugins);
+  *mc = new Multicolumn<ROW>(-1,p,1,plugins);
   ((COMPRESSOR*)(*mc)->compressor(0))->offset(t);
 
   delete [] plugins;
@@ -112,10 +107,10 @@ static Multicolumn<Tuple<TYPE> > * initPage(Multicolumn<Tuple<TYPE> > ** mc,
    @return the number of pages that were needed to store the
    compressed data.
 */
-template <class PAGELAYOUT, class COMPRESSOR, class TYPE, class ITER, class ROW>
+template <class PAGELAYOUT, class COMPRESSOR, class TYPE, class ROW, class ITER>
 pageid_t compressData(ITER * const begin, ITER * const end,
-		 int buildTree, recordid tree, pageid_t (*pageAlloc)(int,void*),
+	      int buildTree, recordid tree, pageid_t (*pageAlloc)(int,void*),
-                      void *pageAllocState, uint64_t * inserted) {
+	      void *pageAllocState, uint64_t * inserted) {
 
   *inserted = 0;
 
@@ -129,13 +124,12 @@ pageid_t compressData(ITER * const begin, ITER * const end,
 
 
   if(*begin != *end && buildTree) {
-    TlsmAppendPage(-1,tree,toByteArray(begin),p->id);
+    TlsmAppendPage(-1,tree,toByteArray(begin),pageAlloc,pageAllocState,p->id);
   }
   pageCount++;
 
   PAGELAYOUT * mc;
-
+  initPage<COMPRESSOR,TYPE,ROW>(&mc, p, **begin);
-  initPage<COMPRESSOR,TYPE>(&mc, p, **begin);
 
   int lastEmpty = 0;
 
@@ -154,9 +148,10 @@ pageid_t compressData(ITER * const begin, ITER * const end,
         next_page = pageAlloc(-1,pageAllocState);
         p = loadPage(-1, next_page);
 
-	mc = initPage<COMPRESSOR, TYPE>(&mc, p, *i);
+	mc = initPage<COMPRESSOR, TYPE, ROW>(&mc, p, *i);
+
 	if(buildTree) {
-	  TlsmAppendPage(-1,tree,toByteArray(&i),p->id);
+	  TlsmAppendPage(-1,tree,toByteArray(&i),pageAlloc,pageAllocState,p->id);
 	}
         pageCount++;
         lastEmpty = 0;
@@ -176,8 +171,8 @@ pageid_t compressData(ITER * const begin, ITER * const end,
 
 template<class PAGELAYOUT,class ENGINE,class ITER,class ROW,class TYPE>
 void* insertThread(void* arg) {
-  insert_args<PAGELAYOUT,ENGINE,ITER,ROW,TYPE>* a =
+  insert_args<PAGELAYOUT,ENGINE,ITER,ROW>* a =
-    (insert_args<PAGELAYOUT,ENGINE,ITER,ROW,TYPE>*)arg;
+    (insert_args<PAGELAYOUT,ENGINE,ITER,ROW>*)arg;
 
   struct timeval start_tv, start_wait_tv, stop_tv;
 
@@ -198,9 +193,10 @@ void* insertThread(void* arg) {
     if(desiredInserts) {
       j += desiredInserts;
     }
-    recordid tree = TlsmCreate(-1, a->comparator_idx,a->rowsize);
+    recordid tree = TlsmCreate(-1, a->comparator_idx,a->pageAlloc, a->pageAllocState, a->rowsize);
-    lastTreeBlocks = compressData<PAGELAYOUT,ENGINE,TYPE,ITER,ROW>
+    lastTreeBlocks =
-          (&i, &j,1,tree,a->pageAlloc,a->pageAllocState, &lastTreeInserts);
+      compressData<PAGELAYOUT,ENGINE,TYPE,ROW,ITER>
+        (&i, &j,1,tree,a->pageAlloc,a->pageAllocState, &lastTreeInserts);
 
     gettimeofday(&start_wait_tv,0);
     pthread_mutex_lock(a->block_ready_mut);
@@ -235,10 +231,16 @@ void* insertThread(void* arg) {
   return 0;
 }
 
-template<class PAGELAYOUT,class ENGINE,class ITER,class ROW,class TYPE>
+/**
+   ITERA is an iterator over the data structure that mergeThread creates (a lsm tree iterator).
+   ITERB is an iterator over the data structures that mergeThread takes as input (lsm tree, or rb tree..)
+ */
+template<class PAGELAYOUT, class ENGINE, class ITERA, class ITERB,
+  class ROW, class TYPE>
 void* mergeThread(void* arg) {
-  insert_args<PAGELAYOUT,ENGINE,ITER,ROW,TYPE>* a =
+  // The ITER argument of a is unused (we don't look at it's begin or end fields...)
-    (insert_args<PAGELAYOUT,ENGINE,ITER,ROW,TYPE>*)arg;
+  insert_args<PAGELAYOUT,ENGINE,ITERA,ROW>* a =
+    (insert_args<PAGELAYOUT,ENGINE,ITERA,ROW>*)arg;
 
   struct timeval start_tv, wait_tv, stop_tv;
 
@@ -260,27 +262,26 @@ void* mergeThread(void* arg) {
 
     pthread_mutex_unlock(a->block_ready_mut);
 
-    recordid tree = TlsmCreate(-1, a->comparator_idx,a->rowsize);
+    recordid tree = TlsmCreate(-1, a->comparator_idx,a->pageAlloc,a->pageAllocState,a->rowsize);
 
-    treeIterator<ROW,PAGELAYOUT> taBegin(*oldTreeA,*(a->scratchA),a->rowsize);
+    ITERA taBegin(*oldTreeA,*(a->scratchA),a->rowsize);
-    treeIterator<ROW,PAGELAYOUT> tbBegin(*oldTreeB,*(a->scratchB),a->rowsize);
+    ITERB tbBegin(*oldTreeB,*(a->scratchB),a->rowsize);
 
-    treeIterator<ROW,PAGELAYOUT> *taEnd = taBegin.end();
+    ITERA *taEnd = taBegin.end();
-    treeIterator<ROW,PAGELAYOUT> *tbEnd = tbBegin.end();
+    ITERB *tbEnd = tbBegin.end();
 
-    mergeIterator<treeIterator<ROW,PAGELAYOUT>,ROW>
+    mergeIterator<ITERA, ITERB, ROW>
-        mBegin(taBegin, tbBegin, *taEnd, *tbEnd);
+      mBegin(taBegin, tbBegin, *taEnd, *tbEnd);
 
-    mergeIterator<treeIterator<ROW,PAGELAYOUT>,ROW>
+    mergeIterator<ITERA, ITERB, ROW>
-        mEnd(taBegin, tbBegin, *taEnd, *tbEnd);
+      mEnd(taBegin, tbBegin, *taEnd, *tbEnd);
 
 
     mEnd.seekEnd();
     uint64_t insertedTuples;
-    pageid_t mergedPages = compressData<PAGELAYOUT,ENGINE,TYPE,
+    pageid_t mergedPages = compressData<PAGELAYOUT,ENGINE,TYPE,ROW,
-        mergeIterator<treeIterator<ROW,PAGELAYOUT>,ROW>,ROW>
+      mergeIterator<ITERA, ITERB, ROW> >
-          (&mBegin, &mEnd,1,tree,a->pageAlloc,a->pageAllocState,&insertedTuples);
+      (&mBegin, &mEnd,1,tree,a->pageAlloc,a->pageAllocState,&insertedTuples);
-
     delete taEnd;
     delete tbEnd;
 

src/stasis/page/compression/compression.h

@@ -11,6 +11,7 @@ typedef uint32_t slot_index_t;
 typedef uint8_t plugin_id_t;
 typedef uint8_t column_number_t;
 typedef uint16_t column_offset_t;
+typedef uint16_t epoch_t;
 
 static const record_size_t VARIABLE_SIZE =  CHAR_MAX;
 static const slot_index_t  NOSPACE       =  UINT_MAX;
@@ -71,6 +72,12 @@ inline plugin_id_t plugin_id() {
   return ret;
 }
 
+double tv_to_double(struct timeval tv) {
+  return static_cast<double>(tv.tv_sec) +
+      (static_cast<double>(tv.tv_usec) / 1000000.0);
+}
+
+
 }
 
 

src/stasis/page/compression/for.h

@@ -42,6 +42,8 @@ namespace rose {
 template <class TYPE>
 class For {
  public:
+  typedef TYPE TYP;
+
   static const int PLUGIN_ID = 0;
   /**
       Set the page offset.  For frame of reference, this is used to

src/stasis/page/compression/multicolumn-impl.h

@@ -2,7 +2,8 @@
 #define _ROSE_COMPRESSION_MULTICOLUMN_IMPL_H__
 
 #include "multicolumn.h"
-
+#include "for-impl.h"
+#include "rle-impl.h"
 namespace rose {
 
 /**

src/stasis/page/compression/multicolumn.h

@@ -68,6 +68,7 @@ template <class TUPLE> class Multicolumn {
  public:
   static page_impl impl();
   static const plugin_id_t PAGE_FORMAT_ID = 1;
+  typedef TUPLE TUP;
 
   Multicolumn(int xid, Page *p, column_number_t column_count,
               plugin_id_t * plugins);

src/stasis/page/compression/pageLayout.h

@@ -0,0 +1,62 @@
+#ifndef _ROSE_COMPRESSION_PAGELAYOUT_H__
+#define _ROSE_COMPRESSION_PAGELAYOUT_H__
+#include "compression.h" // for plugin_id
+namespace rose {
+  // XXX need to be able to de-init this stuff.
+  static int cmp_num = 1;
+  static int init_num = 1;
+  template <class FORMAT, class COMPRESSOR>
+    class SingleColumnTypePageLayout {
+  public:
+    typedef FORMAT FMT;
+    static inline void initPageLayout() {
+      stasis_page_impl_register(FMT::impl());
+
+      // XXX these should register template instantiations of worker
+      // threads that are statically compiled to deal with the tree
+      // we're instantiating.
+      lsmTreeRegisterComparator(cmp_num, FMT::TUP::cmp);
+      lsmTreeRegisterPageInitializer
+	(init_num, (lsm_page_initializer_t)initPage);
+      my_cmp_num = cmp_num;
+      cmp_num++;
+      my_init_num = init_num;
+      init_num++;
+    }
+    static inline FORMAT * initPage(Page *p, const typename FORMAT::TUP * t) {
+      const column_number_t column_count = t->column_count();
+
+      plugin_id_t pluginid = plugin_id<FORMAT, COMPRESSOR, typename COMPRESSOR::TYP>();
+
+      plugin_id_t * plugins = new plugin_id_t[column_count];
+      for(column_number_t c = 0; c < column_count; c++) {
+	plugins[c] = pluginid;
+      }
+      FORMAT * f = new FORMAT(-1,p,column_count,plugins);
+      for(column_number_t c = 0; c < column_count; c++) {
+	COMPRESSOR* com = (COMPRESSOR*) f->compressor(c);
+	typename COMPRESSOR::TYP val = *(typename COMPRESSOR::TYP*)(t->get(c));
+	com->offset(val);
+      }
+      return f;
+    }
+    static inline int cmp_id() {
+      return my_cmp_num;
+    }
+    static inline int init_id() {
+      return my_init_num;
+    }
+  private:
+    static int my_cmp_num;
+    static int my_init_num;
+  };
+  template <class FORMAT, class COMPRESSOR>
+    int SingleColumnTypePageLayout<FORMAT,COMPRESSOR>::my_cmp_num = -1;
+  template <class FORMAT, class COMPRESSOR>
+    int SingleColumnTypePageLayout<FORMAT,COMPRESSOR>::my_init_num = -1;
+
+  template <class PAGELAYOUT>
+    recordid TlsmTableAlloc();
+
+}
+#endif  // _ROSE_COMPRESSION_PAGELAYOUT_H__

src/stasis/page/compression/rle.h

@@ -16,6 +16,8 @@ class Rle {
  public:
   typedef uint32_t block_index_t;
   typedef uint16_t copy_count_t;
+  typedef TYPE TYP;
+
   static const copy_count_t MAX_COPY_COUNT = USHRT_MAX;
 
   struct triple_t {

src/stasis/page/compression/staticTuple.h

@@ -3,16 +3,23 @@
 
 namespace rose {
 
-template<int N,
+  template<int N, class TYPE0,
-  typename TYPE0, class TYPE1, class TYPE2, class TYPE3, class TYPE4,
+    class TYPE1=bool, class TYPE2=bool, class TYPE3=bool, class TYPE4=bool,
-  class TYPE5, class TYPE6, class TYPE7, class TYPE8, class TYPE9>
+    class TYPE5=bool, class TYPE6=bool, class TYPE7=bool, class TYPE8=bool,
-class StaticTuple {
+    class TYPE9=bool>
- public:
+    class StaticTuple {
+  public:
+  static const char NORMAL = 0;
+  static const char TOMBSTONE = 1;
+  static const int TUPLE_ID = 1;
+
   explicit inline StaticTuple() {
+    s.flag_ = NORMAL;
     initializePointers();
   }
-
   explicit inline StaticTuple(StaticTuple& t) {
+    s.flag_ = t.s.flag_;
+    s.epoch_ = t.s.epoch_;
     if(0 < N) s.cols0_ = t.s.cols0_;
     if(1 < N) s.cols1_ = t.s.cols1_;
     if(2 < N) s.cols2_ = t.s.cols2_;
@@ -28,6 +35,21 @@ class StaticTuple {
 
   inline ~StaticTuple() { }
 
+  static inline byte_off_t sizeofBytes() {
+    return sizeof(flag_t) + sizeof(epoch_t) +
+    (0 < N) ? sizeof(TYPE0) : 0 +
+    (1 < N) ? sizeof(TYPE1) : 0 +
+    (2 < N) ? sizeof(TYPE2) : 0 +
+    (3 < N) ? sizeof(TYPE3) : 0 +
+    (4 < N) ? sizeof(TYPE4) : 0 +
+    (5 < N) ? sizeof(TYPE5) : 0 +
+    (6 < N) ? sizeof(TYPE6) : 0 +
+    (7 < N) ? sizeof(TYPE7) : 0 +
+    (8 < N) ? sizeof(TYPE8) : 0 +
+    (9 < N) ? sizeof(TYPE9) : 0 ;
+
+  }
+
   inline void* set(column_number_t col, void* val) {
     memcpy(cols_[col],val,size_[col]);
     return(cols_[col]);
@@ -44,7 +66,7 @@ class StaticTuple {
   inline TYPE8 * set8(TYPE8* val) { s.cols8_=*val; }
   inline TYPE9 * set9(TYPE9* val) { s.cols9_=*val; }
 
-  inline const void* get(column_number_t col) const {
+  inline void* get(column_number_t col) const {
     return cols_[col];
   }
   inline column_number_t column_count() const { return N; }
@@ -52,13 +74,23 @@ class StaticTuple {
   inline byte_off_t column_len(column_number_t col) const {
     return size_[col];
   }
-  inline byte* toByteArray() {
+  inline byte* toByteArray() const {
-    return &s;
+    return (byte*)&s;
   }
-  inline bool operator==(StaticTuple &t) {
+  inline bool operator==(const StaticTuple &t) const {
-    return s == t.s;
+    if(0 < N) if(s.cols0_ != t.s.cols0_) return 0;
+    if(1 < N) if(s.cols1_ != t.s.cols1_) return 0;
+    if(2 < N) if(s.cols2_ != t.s.cols2_) return 0;
+    if(3 < N) if(s.cols3_ != t.s.cols3_) return 0;
+    if(4 < N) if(s.cols4_ != t.s.cols4_) return 0;
+    if(5 < N) if(s.cols5_ != t.s.cols5_) return 0;
+    if(6 < N) if(s.cols6_ != t.s.cols6_) return 0;
+    if(7 < N) if(s.cols7_ != t.s.cols7_) return 0;
+    if(8 < N) if(s.cols8_ != t.s.cols8_) return 0;
+    if(9 < N) if(s.cols9_ != t.s.cols9_) return 0;
+    return 1;
   }
-  inline bool operator<(StaticTuple &t) {
+  inline bool operator<(const StaticTuple &t) const {
     if(0 < N) {
       if(s.cols0_ < t.s.cols0_) return 1;
     }
@@ -101,6 +133,30 @@ class StaticTuple {
     return 0;
   }
 
+  static inline int cmp(const void *ap, const void *bp) {
+    const StaticTuple * a = (const StaticTuple*)ap;
+    const StaticTuple * b = (const StaticTuple*)bp;
+    if(*a < *b) {
+      return -1;
+    } else if(*a == *b) {
+      // Sort *backwards* on epoch values.
+      if(a->s.epoch_ > b->s.epoch_) { return 1; }
+      else if(a->s.epoch_ < b->s.epoch_) { return -1; }
+      else return 0;
+    } else {
+      return 1;
+    }
+
+  }
+
+  struct stl_cmp
+  {
+    bool operator()(const StaticTuple* s1, const StaticTuple* s2) const
+    {
+      return *s1 < *s2; 
+    }
+  };
+
   class iterator {
   public:
     inline iterator(void const *const *const dataset, int offset)
@@ -146,12 +202,14 @@ class StaticTuple {
     int off_;
     StaticTuple scratch_;
   };
- private:
+  private:
 
   explicit StaticTuple(const StaticTuple& t) { abort(); }
 
   void * cols_[N];
   size_t size_[N];
+  typedef char flag_t;
+  typedef unsigned int epoch_t;
   struct {
     TYPE0 cols0_;
     TYPE1 cols1_;
@@ -163,6 +221,8 @@ class StaticTuple {
     TYPE7 cols7_;
     TYPE8 cols8_;
     TYPE9 cols9_;
+    flag_t flag_;
+    epoch_t epoch_;
   } s;
 
   inline void initializePointers() {
@@ -188,7 +248,7 @@ class StaticTuple {
     if(8 < N) size_[8] = sizeof(s.cols8_);
     if(9 < N) size_[9] = sizeof(s.cols9_);
   }
-};
+  };
 
 }
 

src/stasis/page/compression/tuple.h

@@ -47,7 +47,9 @@ class Tuple {
      }
      } */
   inline ~Tuple() { delete[] cols_; delete[] byteArray_; }
-
+  inline bool tombstone() {
+    return false;
+  }
   inline TYPE * set(column_number_t col,void* val) {
     cols_[col] = *(TYPE*)val;
     return (TYPE*)val;
@@ -55,6 +57,11 @@ class Tuple {
   inline TYPE * get(column_number_t col) const {
     return &(cols_[col]);
   }
+  inline void copyFrom(Tuple<TYPE> t) {
+    for(int i = 0; i < count_; i++) {
+      set(i,t.get(i));
+    }
+  }
   inline column_number_t column_count() const {
     return count_;
   }
@@ -156,6 +163,7 @@ class Tuple {
     int off_;
     Tuple<TYPE> scratch_;
   };
+  static const uint32_t TIMESTAMP = 0;
  private:
   Tuple() { abort(); }
   explicit Tuple(const Tuple& t) { abort(); }

stasis/constants.h

@@ -244,6 +244,7 @@ extern const short SLOT_TYPE_LENGTHS[];
 #define FILE_PERM (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
 #define LOG_MODE  (O_CREAT | O_RDWR | O_SYNC)
 
-#define MAX_LSM_COMPARATORS 256
+#define MAX_LSM_COMPARATORS 16
-
+#define MAX_LSM_PAGE_INITIALIZERS 256
+#define MAX_LSM_PAGE_ALLOCATORS 16
 #endif

stasis/operations/lsmTree.h

@@ -23,8 +23,20 @@ typedef struct {
 } lladd_lsm_iterator;
 
 typedef int(*lsm_comparator_t)(const void* a, const void* b);
+typedef void*(*lsm_page_initializer_t)(Page *, void *);
+typedef pageid_t(*lsm_page_allocator_t)(int, void *);
 
 void lsmTreeRegisterComparator(int id, lsm_comparator_t i);
+void lsmTreeRegisterPageInitializer(int id, lsm_page_initializer_t i);
+
+pageid_t TlsmRegionAlloc(int xid, void *conf);
+pageid_t TlsmRegionAllocRid(int xid, void *conf);
+typedef struct {
+  pageid_t nextPage;
+  pageid_t endOfRegion;
+  pageid_t regionSize;
+} TlsmRegionAllocConf_t;
+extern TlsmRegionAllocConf_t LSM_REGION_ALLOC_STATIC_INITIALIZER;
 
 /**
    Initialize a new LSM tree.
@@ -37,24 +49,23 @@ void lsmTreeRegisterComparator(int id, lsm_comparator_t i);
 
    @param keySize
 */
-recordid TlsmCreate(int xid, int comparator, int keySize);
+recordid TlsmCreate(int xid, int comparator,
+		    lsm_page_allocator_t allocator, void *allocator_state,
+		    int keySize);
 /**
    Free the space associated with an LSM tree.
  */
-recordid TlsmDealloc(int xid, recordid tree);
+recordid TlsmDealloc(int xid,
+		     lsm_page_allocator_t allocator, void *allocator_state,
+		     recordid tree);
 /**
    Append a new leaf page to an LSM tree.  Leaves must be appended in
    ascending order; LSM trees do not support update in place.
 */
 recordid TlsmAppendPage(int xid, recordid tree,
-                        const byte *key,
+			const byte *key,
-                        long pageid);
+			lsm_page_allocator_t allocator, void *allocator_state,
-
+			long pageid);
-/**
-   Override the page allocation algorithm that LSM tree uses by default
-*/
-void TlsmSetPageAllocator(pageid_t (*allocer)(int xid, void * ignored),
-                          void * config);
 /**
    Lookup a leaf page.
 

test/stasis/check_lsmTree.c

@@ -32,15 +32,18 @@ int cmp(const void *ap, const void *bp) {
 void insertProbeIter(lsmkey_t NUM_ENTRIES) {
   int intcmp = 0;
   lsmTreeRegisterComparator(intcmp,cmp);
+  TlsmRegionAllocConf_t alloc_conf = LSM_REGION_ALLOC_STATIC_INITIALIZER;
 
   Tinit();
   int xid = Tbegin();
-  recordid tree = TlsmCreate(xid, intcmp, sizeof(lsmkey_t));
+  recordid tree = TlsmCreate(xid, intcmp, 
+			     TlsmRegionAlloc, &alloc_conf,
+			     sizeof(lsmkey_t));
   for(lsmkey_t i = 0; i < NUM_ENTRIES; i++) {
     long pagenum = TlsmFindPage(xid, tree, (byte*)&i);
     assert(pagenum == -1);
     DEBUG("TlsmAppendPage %d\n",i);
-    TlsmAppendPage(xid, tree, (const byte*)&i, i + OFFSET);
+    TlsmAppendPage(xid, tree, (const byte*)&i, TlsmRegionAlloc, &alloc_conf, i + OFFSET);
     pagenum = TlsmFindPage(xid, tree, (byte*)&i);
     assert(pagenum == i + OFFSET);
   }