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fp_tree_ff.cpp
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fp_tree_ff.cpp
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/*
Author: Jianfei Zhu
Concordia University
Date: Feb. 10, 2004
Copyright (c) 2004, Concordia University, Montreal, Canada
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Concordia University nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <assert.h>
#include <math.h>
#include <unistd.h>
#include <sched.h>
#include <sys/syscall.h>
#include "buffer.h"
#include "common.h"
#include "wtime.h"
#include <iostream>
#include <mutex>
#ifdef _OPENMP
#include <omp.h>
#else
static int omp_get_max_threads() {return 1;}
static int omp_get_thread_num() {return 0;}
#endif //_OPENMP
#ifdef ENABLE_NORNIR
#include <nornir/instrumenter.hpp>
#include <stdlib.h>
#include <iostream>
nornir::Instrumenter* instr;
std::string getParametersPath(){
return std::string(getenv("PARSECDIR")) + std::string("/parameters.xml");
}
#endif //ENABLE_NORNIR
#define FF_PARFOR_PASSIVE_NOSTEALING
#include <ff/parallel_for.hpp>
#include <ff/spin-lock.hpp>
#include <pthread.h>
#define fast_rightsib_table_size 16
int ***currentnodeiter;
Fnode ***nodestack;
int **itemstack;
int** origin;
Fnode ***hashtable;
int **hot_node_count;
int *hot_node_depth;
int *hot_node_index;
Fnode ****fast_rightsib_table;
Fnode ****rightsib_backpatch_stack;
int **global_count_array;
int **global_table_array;
int **global_temp_order_array;
int **global_order_array;
int **rightsib_backpatch_count;
int **sum_item_num;
int **global_nodenum;
int lowerbound_array[3] = {0x10000, 0x100, 0};
int **ntypearray;
int *thread_finish_status;
int *thread_begin_status;
int released_pos;
int* first_MC_tree;
unsigned int * first_MR_tree;
char** first_MB_tree;
#define hot_item_num 16
#define hot_item_num1 6
#define hot_node_num (1<<hot_item_num)
#define _MM_HINT_T0 1
#define _MM_HINT_T1 2
#define _MM_HINT_T2 3
#define _MM_HINT_NTA 0
MapFile *mapfile;
MapFile **thread_mapfile;
int sumntype[hot_node_num];
int ntypehashtable[hot_node_num];
int ntypeidarray[hot_node_num];
int mergedworkbase[hot_node_num];
int mergedworkend[hot_node_num];
int mergedworknum;
unsigned short *threadtranscontent;
int **threadntypeoffsetiter;
int *ntypeoffsetbase;
int *ntypeoffsetend;
int numusefulntype;
int **threadworkload;
int *threadworkloadnum;
ff::ParallelFor* ffpf;
//ff::lock_t critical;
std::mutex critical;
template <class T> void transform_FPTree_into_FPArray(FP_tree *fptree, int thread, T mark)
{
Fnode* temp;
int i;
memory *local_buf = fp_buf[thread];
int **local_currentnodeiter = currentnodeiter[thread];
Fnode **local_nodestack = nodestack[thread];
int *local_itemstack = itemstack[thread];
T *ItemArray;
fptree->NodeArrayList = (int**)local_buf->newbuf(1, fptree->itemno * (sizeof(int*) * 2 + sizeof(int) * 2));
fptree->MB_nodes = (char**)(fptree->NodeArrayList + fptree->itemno);
fptree->MC_nodes = (int*)(fptree->MB_nodes + fptree->itemno);
fptree->MR_nodes = (unsigned int*)fptree->MC_nodes + fptree->itemno;
new_data_num[thread][0] ++;
ItemArray = (T*)local_buf->newbuf(1, new_data_num[thread][0] * sizeof(T));
for (i = 0; i < fptree->itemno; i ++) {
fptree->MB_nodes[i]=local_buf->bufmark(&fptree->MR_nodes[i], &fptree->MC_nodes[i]);
local_currentnodeiter[i] = fptree->NodeArrayList[i] = (int*)local_buf->newbuf(1, fptree->nodenum[i] * 2 * sizeof(int));
}
int itemiter = new_data_num[thread][0] - 1;
fptree->Root->count = 0;
local_nodestack[0] = fptree->Root->leftchild;
int stacktop = 0;
int kept_itemiter = new_data_num[thread][0];
bool first = true;
while (stacktop != -1) {
temp = local_nodestack[stacktop];
stacktop --;
if (temp) {
if (!first && temp->leftchild == NULL) {
stacktop ++;
local_nodestack[stacktop] = temp->rightsibling;
int itemname = temp->itemname;
int itemcount = temp->count;
int *nodeiter = local_currentnodeiter[itemname];
local_currentnodeiter[itemname] += 2;
nodeiter[0] = kept_itemiter;
nodeiter[1] = itemcount;
kept_itemiter --;
}
else {
first = false;
ItemArray[itemiter] = mark;
itemiter --;
for (i = 0; i <= stacktop; i ++) {
ItemArray[itemiter] = (T)local_itemstack[i];
itemiter --;
}
for (; temp != NULL; temp = temp->leftchild) {
stacktop ++;
local_nodestack[stacktop] = temp->rightsibling;
int itemname = temp->itemname;
int itemcount = temp->count;
local_itemstack[stacktop] = itemname;
ItemArray[itemiter] = (T) itemname;
itemiter --;
int *nodeiter = local_currentnodeiter[itemname];
local_currentnodeiter[itemname] += 2;
nodeiter[0] = (itemiter + 2);
nodeiter[1] = itemcount;
}
kept_itemiter = itemiter + 1;
itemiter ++;
}
}
kept_itemiter ++;
}
fptree->ItemArray = (int *) ItemArray;
}
template <class T> void first_transform_FPTree_into_FPArray(FP_tree *fptree, T mark)
{
int j;
memory *local_buf = fp_buf[0];
int sum_new_data_num;
sum_new_data_num = 0;
fptree->MB_nodes = (char**) local_buf->newbuf(1, fptree->itemno * (sizeof(int*) + sizeof(int) * 2));
fptree->MC_nodes = (int*)(fptree->MB_nodes + fptree->itemno);
fptree->MR_nodes = (unsigned int*)fptree->MC_nodes + fptree->itemno;
int workingthread = omp_get_max_threads();
int *content_offset_array = new int [workingthread];
for (j = 0; j < workingthread; j ++) {
new_data_num[j][0] ++;
sum_new_data_num += new_data_num[j][0];
content_offset_array[j] = sum_new_data_num;
}
int **node_offset_array = new int *[workingthread + 1];
node_offset_array[0] = new int [(workingthread + 1) * fptree->itemno];
for (j = 1; j <= workingthread; j ++)
node_offset_array[j] = node_offset_array[j - 1] + fptree->itemno;
for (j = 0; j < fptree->itemno; j ++)
node_offset_array[0][j] = 0;
for (j = 1; j <= workingthread; j ++)
for (int i = 0; i < fptree->itemno; i ++)
node_offset_array[j][i] = node_offset_array[j - 1][i] + global_nodenum[j - 1][i];
for (j = 0; j < fptree->itemno; j ++) {
fptree->MB_nodes[j]=fp_node_sub_buf->bufmark(&fptree->MR_nodes[j], &fptree->MC_nodes[j]);
fptree->nodenum[j] = node_offset_array[workingthread][j];
fptree->NodeArrayList[j] = (int*)fp_node_sub_buf->newbuf(1, node_offset_array[workingthread][j]* 2 * sizeof(int));
}
new_data_num[0][0] = sum_new_data_num;
T *ItemArray = (T *)local_buf->newbuf(1, new_data_num[0][0] * sizeof(T));
ffpf->parallel_for(0, workingthread, 1, PARFOR_STATIC(0), [&](const long j) {
int kept_itemiter;
int itemiter = content_offset_array[j] - 1;
int stacktop;
int shift_bit;
int i, k;
Fnode **local_nodestack = nodestack[j];
int *local_itemstack = itemstack[j];
int **local_currentnodeiter = currentnodeiter[j];
Fnode* temp;
for (i = 0; i < fptree->itemno; i ++)
local_currentnodeiter[i] = fptree->NodeArrayList[i] + 2 * node_offset_array[j][i];
for (k = 0; k < threadworkloadnum[j]; k ++) {
int ntype = threadworkload[j][k];
bool first = true;
stacktop = 0;
kept_itemiter = itemiter + 1;
if (hashtable[0][ntype] == fptree->Root)
local_nodestack[0] = fptree->Root->leftchild;
else {
for (i = 0, shift_bit = 1; i < hot_item_num; i ++, shift_bit <<=1) {
if ((shift_bit & ntype) != 0) {
local_itemstack[stacktop] = i;
local_nodestack[stacktop] = NULL;
stacktop ++;
}
}
stacktop --;
local_nodestack[stacktop] = hashtable[0][ntype];
}
while (stacktop != -1) {
temp = local_nodestack[stacktop];
stacktop --;
if (temp) {
if (temp->leftchild ==NULL && !first) {
stacktop ++;
local_nodestack[stacktop] = temp->rightsibling;
int itemname = temp->itemname;
int itemcount = temp->count;
int *nodeiter = local_currentnodeiter[itemname];
local_currentnodeiter[itemname] += 2;
nodeiter[0] = kept_itemiter;
nodeiter[1] = itemcount;
kept_itemiter --;
}
else {
first = false;
ItemArray[itemiter] = mark;
itemiter --;
for (i = 0; i <= stacktop; i ++) {
ItemArray[itemiter] = (T)local_itemstack[i];
itemiter --;
}
for (; temp != NULL; temp = temp->leftchild) {
stacktop ++;
local_nodestack[stacktop] = temp->rightsibling;
int itemname = temp->itemname;
int itemcount = temp->count;
local_itemstack[stacktop] = itemname;
ItemArray[itemiter] = (T) itemname;
itemiter --;
int *nodeiter = local_currentnodeiter[itemname];
local_currentnodeiter[itemname] += 2;
nodeiter[0] = (itemiter + 2);
nodeiter[1] = itemcount;
}
kept_itemiter = itemiter + 1;
itemiter ++;
}
}
kept_itemiter ++;
}
}
}, workingthread);
fptree->ItemArray = (int *) ItemArray;
}
template <class T> int FPArray_conditional_pattern_base(FP_tree *fptree, int itemname, int thread, T mark)
{
int i, j;
int numnode = fptree->nodenum[itemname];
int* nodearray = fptree->NodeArrayList[itemname];
T* Trans;
T * ItemArray = (T *) fptree->ItemArray;
int local_sum_item_num = 0;
int *local_supp = supp[thread];
int *local_global_table_array = global_table_array[thread];
int *local_global_count_array = global_count_array[thread];
int *local_global_temp_order_array = global_temp_order_array[thread];
for (i = 0; i < numnode; i ++) {
#ifdef ENABLE_PREFETCHING
_mm_prefetch(ItemArray + nodearray[8], _MM_HINT_T0);
#endif
int begin = nodearray[0];
int tempcount = nodearray[1];
nodearray += 2;
Trans = ItemArray + begin;
for (j = 0; Trans[j] != mark; j ++) {
local_supp[Trans[j]]+= tempcount;
}
local_sum_item_num += j;
}
sum_item_num[thread][0] = local_sum_item_num;
j = 0;
for(i=0; i<itemname; i++)
{
if(local_supp[i]>=THRESHOLD)
{
local_global_table_array[j] = fptree->table[i];
local_global_count_array[j] = local_supp[i];
j++;
}else if (local_supp[i] > 0) {
local_global_temp_order_array[fptree->table[i]] = -1;
}
local_supp[i] = 0;
}
return j;
}
template <class T> void FPArray_scan2_DB(FP_tree*fptree, FP_tree* old_tree, int itemname, int thread, T mark)
{
int i, has;
int *local_origin = origin[thread];
int *local_hot_node_count = hot_node_count[thread];
Fnode **local_hashtable = hashtable[thread];
memory *local_fp_tree_buf = fp_tree_buf[thread];
int * local_compact = compact[thread];
int numnode = old_tree->nodenum[itemname];
int* nodearray = old_tree->NodeArrayList[itemname];
T* Trans;
T* ItemArray = (T *)old_tree->ItemArray;
int ntype;
int max_itemno;
int *local_global_order_array = global_order_array[thread];
int num_hot_item = fptree->num_hot_item;
for (i = 0; i < numnode; i ++) {
#ifdef ENABLE_PREFETCHING
_mm_prefetch(ItemArray + nodearray[6], _MM_HINT_NTA);
#endif
int begin = nodearray[0];
int tempcount = nodearray[1];
nodearray += 2;
Trans = ItemArray + begin;
has = 0;
ntype = 0;
max_itemno = 0;
for (int j = 0; Trans[j] != mark; j ++) {
int item = local_global_order_array[Trans[j]];
if (item < num_hot_item) {
if (item != -1)
ntype |= (1 << item);
} else {
local_origin[item]=1;
has++;
if (item > max_itemno)
max_itemno = item;
}
}
local_hot_node_count[ntype] += tempcount;
if (local_hashtable[ntype] == NULL) {
local_hashtable[ntype] = (Fnode*)local_fp_tree_buf->newbuf(1, sizeof(Fnode));
local_hashtable[ntype]->init(hot_node_index[ntype], 0);
}
if(has)
{
fptree->fill_count(max_itemno, thread);
fptree->insert(local_compact, tempcount, has, ntype, thread);
}
}
int local_new_data_num = new_data_num[thread][0];
local_new_data_num ++;
int step, num_hot_node, parent;
Fnode *current_node, *parent_node;
num_hot_node = 1<<num_hot_item;
for (i=num_hot_node-1;i>0;i--) {
if (local_hashtable[i] == NULL)
continue;
step = hot_node_index[i];
parent = i ^ (1 << step);
local_hot_node_count[parent] += local_hot_node_count[i];
parent_node = local_hashtable[parent];
if (parent_node == NULL) {
parent_node = (Fnode*)local_fp_tree_buf->newbuf(1, sizeof(Fnode));
parent_node->itemname = hot_node_index[parent];
parent_node->rightsibling = NULL;
parent_node->leftchild = NULL;
local_hashtable[parent] = parent_node;
}
if (parent_node->leftchild == NULL)
local_new_data_num ++;
else local_new_data_num += hot_node_depth[i];
current_node = local_hashtable[i];
current_node->rightsibling = parent_node->leftchild;
parent_node->leftchild = current_node;
current_node->count = local_hot_node_count[i];
local_hashtable[i] = NULL;
local_hot_node_count[i] = 0;
fptree->nodenum[step] ++;
}
new_data_num[thread][0] = local_new_data_num;
int local_rightsib_backpatch_count = rightsib_backpatch_count[thread][0];
Fnode ***local_rightsib_backpatch_stack = rightsib_backpatch_stack[thread];
for (i = 0; i < local_rightsib_backpatch_count; i ++)
*local_rightsib_backpatch_stack[i] = NULL;
}
template <class T1, class T2> void transform_FPArray(T1 *oldItemArray, T2 mark, int size)
{
T2 * newItemArray = (T2 *) oldItemArray;
for (int i = 0; i < size; i ++)
newItemArray[i] = oldItemArray[i] & mark;
}
template <class T> void swap(T* k, T* j)
{
T temp;
temp = *j;
*j = *k;
*k = temp;
}
int findpivot(const int& i, const int& j) {return (i+j)/2;}
int partition(int* array, int* temp, int l, int r, int pivot)
{
do {
while (array[++l] > pivot);
while (r && array[--r] < pivot);
swap(array+l, array+r);
swap(temp+l, temp+r);
}while (l < r);
swap(array + l, array + r);
swap(temp + l, temp + r);
return l;
}
void inssort(int* array, int* temp, int i, int j)
{
for (int k=i+1; k<=j; k++)
for (int m=k; (m>i) && (array[m] > array[m-1]); m--)
{
swap(array+m, array+m-1);
swap(temp+m, temp+m-1);
}
}
void sort(int *array, int* temp, int i, int j)
{
if(j-i < SORTHRESH) inssort(array, temp, i, j);
else
{
int pivotindex = findpivot(i, j);
swap(array+pivotindex, array+j);
swap(temp+pivotindex, temp+j);
int k = partition(array, temp, i-1, j, array[j]);
swap(array+k, array+j);
swap(temp+k, temp+j);
if((k-i)>1) sort(array, temp, i, k-1);
if((j-k)>1) sort(array, temp, k+1, j);
}
}
stack::stack(int length)
{
top= 0;
FS = new int[length];
counts = NULL;
}
stack::~stack()
{
delete []FS;
}
void stack::insert(FP_tree* fptree)
{
for(Fnode* node=fptree->Root->leftchild; node!=NULL; node=node->leftchild)
{
FS[top]=node->itemname;
top++;
}
}
void FP_tree::init(int old_itemno, int new_itemno, int thread)
{
int i;
Root = (Fnode*)fp_buf[thread]->newbuf(1, sizeof(Fnode));
Root->init(-1, 0);
if(old_itemno!=-1)
{
count = (int*)fp_buf[thread]->newbuf(1,new_itemno * 2 * sizeof(int));
table = count + new_itemno;
for (i=0; i<new_itemno; i++)
{
count[i] = 0;
table[i] = i;
}
new_data_num[thread][0] = 0;
}
itemno = new_itemno;
}
void FP_tree::database_tiling(int workingthread)
{
int i;
int *thread_pos = new int [workingthread];
int local_num_hot_item = num_hot_item;
int local_itemno = itemno;
for (i = 0; i < workingthread; i ++) {
thread_pos[i] = 0;
int j;
for (j = 0; j < hot_node_num; j ++)
ntypearray[i][j] = 0;
for (j = local_num_hot_item; j < local_itemno; j ++)
origin[i][j] = 1;
}
ffpf->parallel_for_thid(0, mapfile->tablesize, 1, 1, [&](const long i, const int thid) {
int k, l;
int *content;
MapFileNode *currentnode;
MapFileNode *newnode;
int size;
unsigned short *newcontent;
int currentpos;
int thread = thid;
int *local_origin = origin[thread];
int *local_ntype = ntypearray[thread];
int ntype;
int item;
int has;
int *local_hot_node_count = hot_node_count[thread];
newnode = thread_mapfile[thread]->first;
size = newnode->size;
newcontent = (unsigned short *) newnode->TransactionContent;
currentpos = thread_pos[thread];
int max_item = 0;
int min_item = local_itemno;
currentnode = mapfile->table[i];
ntype = 0;
content = currentnode->TransactionContent;
has = 0;
for (k = currentnode->top - 1; k >= 0; k --) {
if (content[k] == -1) {
ntype &= 0xffff;
if (has > 0) {
if (size - currentpos < has + 1) {
newnode->top = currentpos;
newnode = (MapFileNode *)fp_tree_buf[thread]->newbuf(1, sizeof(MapFileNode));
newnode->init(5000000, 2);
newnode->next = thread_mapfile[thread]->first;
thread_mapfile[thread]->first = newnode;
newcontent = (unsigned short *) (newnode->TransactionContent);
currentpos = 0;
}
newcontent[currentpos ++] = ntype;
newcontent[currentpos ++] = has;
local_ntype[ntype] += has + 1;
for (l = min_item; l <= max_item; l ++)
if (local_origin[l] != 1) {
newcontent[currentpos ++] = l;
local_origin[l] = 1;
}
has = 0;
max_item = 0;
min_item = local_itemno;
}
local_hot_node_count[ntype] ++;
ntype = 0;
}
else {
item = item_order[content[k]];
if (item < local_num_hot_item) {
ntype |= (1 << item);
} else
{
has += local_origin[item];
local_origin[item] = 0;
if (item > max_item)
max_item = item;
if (item < min_item)
min_item = item;
}
}
}
ntype &= 0xffff;
if (has > 0) {
if (size - currentpos < has + 1) {
newnode->top = currentpos;
newnode = (MapFileNode *)fp_tree_buf[i]->newbuf(1, sizeof(MapFileNode));
newnode->init(5000000, 2);
newnode->next = thread_mapfile[i]->first;
thread_mapfile[i]->first = newnode;
newcontent = (unsigned short *) (newnode->TransactionContent);
currentpos = 0;
}
newcontent[currentpos ++] = ntype;
newcontent[currentpos ++] = has;
local_ntype[ntype] += has + 1;
for (l = min_item; l <= max_item; l ++)
if (local_origin[l] != 1) {
newcontent[currentpos ++] = l;
local_origin[l] = 1;
}
}
local_hot_node_count[ntype] ++;
newnode->top = currentpos;
currentnode->finalize();
thread_pos[thread] = currentpos;
}, workingthread);
for (i = 0; i < workingthread; i ++) {
thread_pos[i] = 0;
int j;
for (j = local_num_hot_item; j < local_itemno; j ++)
origin[i][j] = 0;
}
int sumworkload = 0;
numusefulntype = 0;
int averworkload = 0;
ntypeoffsetbase = new int [hot_node_num];
ntypeoffsetend = new int [hot_node_num];
int *tempntypeoffsetbase = new int [hot_node_num];
int tempworkload;
for (i = 0; i < hot_node_num; i ++) {
sumntype[i] = 0;
for (int j = 0; j < workingthread; j ++)
sumntype[i] += ntypearray[j][i];
if (sumntype[i] > 0)
numusefulntype ++;
tempntypeoffsetbase[i] = ntypeoffsetbase[i] = sumworkload;
sumworkload += sumntype[i];
ntypeoffsetend[i] = sumworkload;
}
int num_hot_node = 1<<local_num_hot_item;
int j, step, parent;
Fnode **local_hashtable = hashtable[0];
int *local_hot_node_count = hot_node_count[0];
Fnode *current_node;
threadworkload = new int * [workingthread];
threadworkloadnum = new int [workingthread];
for (j = 0; j < workingthread; j ++) {
threadworkloadnum[j] = 0;
threadworkload[j] = new int [hot_node_num];
}
for (i=num_hot_node-1;i>0;i--) {
for (j = 1; j < workingthread; j ++) {
local_hot_node_count[i] += hot_node_count[j][i];
hot_node_count[j][i] = 0;
}
if (local_hot_node_count[i] == 0)
continue;
current_node = (Fnode*)fp_tree_buf[0]->newbuf(1, sizeof(Fnode));
current_node->itemname = hot_node_index[i];
current_node->rightsibling = NULL;
current_node->leftchild = NULL;
current_node->count = local_hot_node_count[i];
local_hashtable[i] = current_node;
step = hot_node_index[i];
parent = i ^ (1 << step);
local_hot_node_count[parent] += local_hot_node_count[i];
local_hot_node_count[i] = 0;
if (sumntype[i] == 0) {
threadworkload[0][threadworkloadnum[0]] = i;
threadworkloadnum[0] ++;
global_nodenum[0][step] ++;
new_data_num[0][0] += hot_node_depth[i] + 1;
}
}
threadtranscontent = (unsigned short *) database_buf->newbuf(1, sumworkload * sizeof(short));
sort(sumntype, ntypeidarray, 0, hot_node_num - 1);
averworkload = sumworkload / 512;
tempworkload = 0;
mergedworkbase[0] = 0;
mergedworknum = 0;
for (i = 0; i < numusefulntype; i ++) {
tempworkload += sumntype[i];
if (tempworkload >= averworkload) {
mergedworkend[mergedworknum] = i + 1;
mergedworknum ++;
mergedworkbase[mergedworknum] = i + 1;
tempworkload = 0;
}
}
mergedworkend[mergedworknum] = i;
mergedworknum ++;
averworkload = 0;
averworkload = sumworkload / workingthread;
j = 0;
for (i = 0; i < hot_node_num; i ++)
for (j = 0; j < workingthread; j ++) {
if (ntypearray[j][i] > 0) {
threadntypeoffsetiter[j][i] = tempntypeoffsetbase[i];
tempntypeoffsetbase[i] += ntypearray[j][i];
}
}
ffpf->parallel_for(0, workingthread, 1, PARFOR_STATIC(0), [&](const long i) {
MapFileNode *current_mapfilenode;
unsigned short * content;
int k, size, current_pos, ntype, has;
unsigned short *new_content;
int *local_threadntypeoffsetiter = threadntypeoffsetiter[i];
current_mapfilenode = thread_mapfile[i]->first;
while (current_mapfilenode) {
size = current_mapfilenode->top;
current_pos = 0;
content = (unsigned short *)current_mapfilenode->TransactionContent;
while (current_pos < size) {
ntype = content[current_pos];
current_pos ++;
has = content[current_pos];
new_content = threadtranscontent + local_threadntypeoffsetiter[ntype];
local_threadntypeoffsetiter[ntype] += has + 1;
for (k = 0; k < has + 1; k ++)
new_content[k] = content[current_pos ++];
}
current_mapfilenode->finalize();
current_mapfilenode = current_mapfilenode->next;
}
}, workingthread);
delete [] tempntypeoffsetbase;
delete [] thread_pos;
}
void FP_tree::scan1_DB(Data* fdat)
{
int i,j;
int *counts;
int thread = 0; //omp_get_thread_num(); // We don't need this, it is executed by the main thread only.
mapfile = (MapFile*)database_buf->newbuf(1, sizeof(MapFile));
mapfile->first = NULL;
counts = fdat->parseDataFile(mapfile);
order = (int*)fp_buf[thread]->newbuf(1, ITEM_NO * 3 * sizeof(int));
table = order + ITEM_NO;
count = table + ITEM_NO;
for (i=0; i<ITEM_NO; i++)
{
order[i]=-1;
count[i] = counts[i];
table[i] = i;
}
sort(count, table, 0, ITEM_NO-1);
for (i =0; i<ITEM_NO&&count[i] >= THRESHOLD; i++);
itemno = i;
for (j=0; j<itemno; j++)
{
count[j]=counts[table[j]];
order[table[j]]=j;
}
order_item = new int[itemno];
item_order = new int[ITEM_NO];
for(i=0; i<itemno; i++)
{
order_item[i]=table[i];
table[i]=i;
item_order[i] = order[i];
order[i]=i;
}
for(;i<ITEM_NO; i++)
{
item_order[i] = order[i];
order[i]=-1;
}
ITEM_NO = itemno;
delete []counts;
MC_tree = 0;
MR_tree = 0;
MB_tree=fp_tree_buf[thread]->bufmark(&MR_tree, &MC_tree);
num_hot_item = hot_item_num;
if (num_hot_item > itemno)
num_hot_item = itemno;
int num_hot_node = 1 << hot_item_num;
int workingthread=omp_get_max_threads();
thread_mapfile = (MapFile **)database_buf->newbuf(1, workingthread*3*sizeof(int*));
ntypearray = (int **) (thread_mapfile + workingthread);
threadntypeoffsetiter = (int **) (ntypearray + workingthread);
first_MC_tree = (int *) fp_tree_buf[0]->newbuf(1, workingthread*(2*sizeof(int) + sizeof(int*)));
first_MB_tree = (char **) (first_MC_tree + workingthread);
first_MR_tree = (unsigned int *) (first_MB_tree + workingthread);
for (i = 0; i < workingthread; i ++) {
first_MB_tree[i] = fp_tree_buf[i]->bufmark(&first_MR_tree[i], &first_MC_tree[i]);
thread_mapfile[i] = (MapFile *)database_buf->newbuf(1, sizeof(MapFile) + sizeof(MapFileNode) + hot_node_num * 2 * sizeof(int));
thread_mapfile[i]->init();
thread_mapfile[i]->first = (MapFileNode *) (thread_mapfile[i] + 1);
thread_mapfile[i]->first->init(2000000, 2);
ntypearray[i] = (int *) (thread_mapfile[i]->first + 1);
threadntypeoffsetiter[i] = (int *) (ntypearray[i] + hot_node_num);
}
{
currentnodeiter = (int***)fp_buf[thread]->newbuf(1, workingthread * 25 * sizeof(int*) + itemno * 2 * sizeof(int*) + num_hot_node * 2 * sizeof(int*));
itemstack = (int**) (currentnodeiter + workingthread);
origin = itemstack + workingthread;
global_count_array = origin + workingthread;
global_temp_order_array = global_count_array + workingthread;
global_order_array = global_temp_order_array + workingthread;
global_table_array = global_order_array + workingthread;
hot_node_count = global_table_array + workingthread;
supp = hot_node_count + workingthread;
ITlen = supp + workingthread;
bran = ITlen + workingthread;
compact = bran + workingthread;
prefix = compact + workingthread;
rightsib_backpatch_count = prefix + workingthread;
sum_item_num = rightsib_backpatch_count + workingthread;
new_data_num = sum_item_num + workingthread;
list = (stack **) (new_data_num + workingthread);
hashtable = (Fnode ***) (list + workingthread);
nodestack = hashtable + workingthread;
fast_rightsib_table = (Fnode ****) (nodestack + workingthread);
rightsib_backpatch_stack = fast_rightsib_table + workingthread;
nodenum = (int *) (rightsib_backpatch_stack + workingthread);
NodeArrayList = (int **) (nodenum + itemno);
thread_finish_status = (int *) (NodeArrayList + itemno);
thread_begin_status = thread_finish_status + workingthread;
hot_node_depth = thread_begin_status + workingthread;
hot_node_index = hot_node_depth + num_hot_node;
global_nodenum = (int **) (hot_node_index + num_hot_node);
for (i = 0; i < workingthread; i ++) {
list[i] = new stack(itemno);
thread_finish_status[i] = itemno;
thread_begin_status[i] = itemno - 1;
}
released_pos = itemno;
for (i = 0; i < itemno; i ++)
nodenum[i] = 0;
}
for (i = 1; i < num_hot_node; i ++) {
hot_node_depth[i] = 0;
for (j = 1<<(num_hot_item - 1); j != 0; j >>= 1)
if ((j & i) != 0) {
hot_node_depth[i] ++;
}
for (j = num_hot_item - 1; ((1 << j) & i) == 0; j --);
hot_node_index[i] = j;
}
hot_node_depth[0] = 0;
ffpf = new ff::ParallelFor(omp_get_max_threads());
ffpf->parallel_for(0, workingthread, 1, PARFOR_STATIC(0), [&](const long k) {
int i;
currentnodeiter[k] = (int**)fp_buf[k]->newbuf(1, itemno * (14 + fast_rightsib_table_size) * sizeof(int *) + num_hot_node * 2 * sizeof(int *) + (fast_rightsib_table_size * itemno) * sizeof(int *) + fast_rightsib_table_size + 3 * sizeof(int*));
nodestack[k] = (Fnode**)(currentnodeiter[k] + itemno);
itemstack[k] = (int*)(nodestack[k] + itemno);
global_count_array[k] = itemstack[k] + itemno;
global_table_array[k] = global_count_array[k] + itemno;
global_temp_order_array[k] = global_table_array[k] + itemno;
global_order_array[k] = global_temp_order_array[k] + itemno;
supp[k] = global_order_array[k] + itemno;
ITlen[k] = supp[k] + itemno;
bran[k] = ITlen[k] + itemno;
compact[k] = bran[k] + itemno;
prefix[k] = compact[k] + itemno;
hashtable[k] = (Fnode**) (prefix[k] + itemno);
origin[k] = (int *) (hashtable[k] + num_hot_node);
hot_node_count[k] = (int *) (origin[k] + itemno);
fast_rightsib_table[k] = (Fnode ***) (hot_node_count[k] + num_hot_node);
fast_rightsib_table[k][0] = (Fnode **) (fast_rightsib_table[k] + fast_rightsib_table_size);
for (i = 1; i < fast_rightsib_table_size; i ++)
fast_rightsib_table[k][i] = fast_rightsib_table[k][i - 1] + itemno;
global_nodenum[k] = (int *)fp_tree_buf[k]->newbuf(1, itemno*sizeof(int));
for (i = 0; i < itemno; i ++)
global_nodenum[k][i] = 0;
new_data_num[k] = (int *) (fast_rightsib_table[k][fast_rightsib_table_size - 1] + itemno);
new_data_num[k][0] = 0;
rightsib_backpatch_count[k] = new_data_num[k] + 1;
sum_item_num[k] = rightsib_backpatch_count[k] + 1;
rightsib_backpatch_stack[k] = (Fnode ***) (sum_item_num[k] + 1);
rightsib_backpatch_count[k][0] = 0;
for (i = 0; i < itemno * fast_rightsib_table_size; i ++)
fast_rightsib_table[k][0][i] = NULL;
for (i = 1; i < num_hot_node; i ++) {
hot_node_count[k][i] = 0;
hashtable[k][i] = NULL;
}
hashtable[k][0] = Root;
for (i = 0; i < itemno; i ++) {
origin[k][i] = 0;
supp[k][i] = 0;
ITlen[k][i] = 0;
bran[k][i] = 0;
}
}, workingthread);
mapfile->transform_list_table();
for (i = 0; i < hot_node_num; i ++)
ntypeidarray[i] = i;
}
void FP_tree::insert(int* compact, int counts, int current, int ntype, int thread)
{
Fnode* child;
Fnode* temp, *temp2;
Fnode** backpatch_node = NULL;
int i=0, k;
child = hashtable[thread][ntype];
int *local_bran = bran[thread];
if (ntype < fast_rightsib_table_size) {
temp = fast_rightsib_table[thread][ntype][compact[i]];
if (temp == NULL) {
backpatch_node = &(fast_rightsib_table[thread][ntype][compact[i]]);
goto OUT;
}
temp->count+=counts;
child=temp;
i++;
}
while(i<current)
{
int itemname = compact[i];
temp=child->leftchild;
if (temp == NULL)
break;
if(temp->itemname!=itemname) {
temp = temp->rightsibling;
while (1) {
if (temp == NULL)
goto OUT;
if(temp->itemname==itemname)break;
temp = temp->rightsibling;
}
}
temp->count+=counts;
child=temp;
i++;
}
OUT:
k = current - i;
if (k > 0) {
temp = (Fnode*)fp_tree_buf[thread]->newbuf(1, sizeof(Fnode) * k);
if (backpatch_node) {
*backpatch_node = temp;
rightsib_backpatch_stack[thread][rightsib_backpatch_count[thread][0]] = backpatch_node;
rightsib_backpatch_count[thread][0] ++;
}
nodenum[compact[i]] ++;
local_bran[i]++;
temp->itemname = compact[i];
temp->count = counts;
if (child->leftchild == NULL) {
temp->rightsibling = child->leftchild;
child->leftchild=temp;
new_data_num[thread][0] += k;
} else {
temp->rightsibling = child->leftchild->rightsibling;
child->leftchild->rightsibling = temp;
new_data_num[thread][0] += current + hot_node_depth[ntype];
}
temp2 = temp;
temp ++;
i++;