before fix thread-safe

deps/SZ/sz/CMakeLists.txt

-add_library (SZ
-  src/ArithmeticCoding.c
-  src/ByteToolkit.c
-  src/CacheTable.c
-  src/callZlib.c
-  src/CompressElement.c
-  src/conf.c
-  src/dataCompression.c
-  src/dictionary.c
-  src/DynamicByteArray.c
-  src/DynamicDoubleArray.c
-  src/DynamicFloatArray.c
-  src/DynamicIntArray.c
-  src/Huffman.c
-  src/iniparser.c
-  src/MultiLevelCacheTable.c
-  src/MultiLevelCacheTableWideInterval.c
-  src/pastri.c
-  src/exafelSZ.c
-  src/rw.c
-  src/rwf.c
-  src/sz.c
-  src/szd_double.c
-  src/szd_double_pwr.c
-  src/szd_double_ts.c
-  src/szd_float.c
-  src/szd_float_pwr.c
-  src/szd_float_ts.c
-  src/szd_int16.c
-  src/szd_int32.c
-  src/szd_int64.c
-  src/szd_int8.c
-  src/sz_double.c
-  src/sz_double_pwr.c
-  src/sz_double_ts.c
-  src/szd_uint16.c
-  src/szd_uint32.c
-  src/szd_uint64.c
-  src/szd_uint8.c
-  src/szf.c
-  src/sz_float.c
-  src/sz_float_pwr.c
-  src/sz_float_ts.c
-  src/sz_int16.c
-  src/sz_int32.c
-  src/sz_int64.c
-  src/sz_int8.c
-  src/sz_omp.c
-  src/sz_uint16.c
-  src/sz_uint32.c
-  src/sz_uint64.c
-  src/sz_uint8.c
-  src/TightDataPointStorageD.c
-  src/TightDataPointStorageF.c
-  src/TightDataPointStorageI.c
-  src/TypeManager.c
-  src/utility.c
-  src/VarSet.c
-  src/sz_stats.c
-)
-
-target_include_directories(SZ 
-  PUBLIC 
-  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/sz>
-  )
-
-
-target_compile_options(SZ
-	PRIVATE $<$<CONFIG:Debug>:-Wall -Wextra -Wpedantic -Wno-unused-parameter>
-	)
-
-if(BUILD_PASTRI)
-  target_compile_definitions(SZ PUBLIC HAVE_PASTRI)
-endif()
-if(BUILD_TIMECMPR)
-  target_compile_definitions(SZ PUBLIC HAVE_TIMECMPR)
-endif()
-if(BUILD_RANDOMACCESS)
-  target_compile_definitions(SZ PUBLIC HAVE_RANDOMACCESS)
-endif()
-if(BUILD_FORTRAN)
-  enable_language(Fortran)
-  target_sources(SZ PRIVATE
-    ${CMAKE_CURRENT_SOURCE_DIR}/src/rw_interface.F90
-    ${CMAKE_CURRENT_SOURCE_DIR}/src/sz_interface.F90
-  )
-endif()
-if(BUILD_STATS)
-  target_compile_definitions(SZ PUBLIC HAVE_WRITESTATS)
-endif()

deps/SZ/sz/include/defines.h

@@ -24,7 +24,7 @@
 //prediction mode of temporal dimension based compression
 #define SZ_PREVIOUS_VALUE_ESTIMATE 0
 
-#define MIN_NUM_OF_ELEMENTS 20 //if the # elements <= 20, skip the compression
+#define MIN_NUM_OF_ELEMENTS 0 //if the # elements <= 20, skip the compression
 
 #define ABS 0
 #define REL 1

deps/SZ/sz/include/rw.h

@@ -60,7 +60,7 @@ float *readFloatData_systemEndian(char *srcFilePath, size_t *nbEle, int *status)
 void writeByteData(unsigned char *bytes, size_t byteLength, char *tgtFilePath, int *status);
 void writeDoubleData(double *data, size_t nbEle, char *tgtFilePath, int *status);
 void writeFloatData(float *data, size_t nbEle, char *tgtFilePath, int *status);
-void writeData(void *data, int dataType, size_t nbEle, char *tgtFilePath, int *status);
+void writeDataSZ(void *data, int dataType, size_t nbEle, char *tgtFilePath, int *status);
 void writeFloatData_inBytes(float *data, size_t nbEle, char* tgtFilePath, int *status);
 void writeDoubleData_inBytes(double *data, size_t nbEle, char* tgtFilePath, int *status);
 void writeShortData_inBytes(short *states, size_t stateLength, char *tgtFilePath, int *status);

deps/SZ/sz/include/td_sz.h

+
+#ifndef _TD_SZ_H
+#define _TD_SZ_H
+#include "defines.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//
+// compress interface to tdengine return value is count of output with bytes
+//
+int tdszCompress(int type, const char * input, const int nelements, const char * output);
+
+//
+// decompress interface to tdengine return value is count of output with bytes
+//
+int tdszDecompress(int type, const char * input, int compressedSize, const int nelements, const char * output);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ----- #ifndef _SZ_H  ----- */

deps/SZ/sz/src/conf.c

@@ -94,7 +94,7 @@ int SZ_ReadConf(const char* sz_cfgFile) {
     
     confparams_cpr->plus_bits = 3;
     
-    if(sz_cfgFile == NULL)
+    if(sz_cfgFile == NULL || access(sz_cfgFile, F_OK) != 0)
     {
 		dataEndianType = LITTLE_ENDIAN_DATA;
 		confparams_cpr->sol_ID = SZ;
@@ -116,10 +116,10 @@ int SZ_ReadConf(const char* sz_cfgFile) {
 		else
 			confparams_cpr->gzipMode = 1; //high speed mode
 		
-		confparams_cpr->errorBoundMode = PSNR;
+		confparams_cpr->errorBoundMode = ABS;
 		confparams_cpr->psnr = 90;
-		confparams_cpr->absErrBound = 1E-4;
-		confparams_cpr->relBoundRatio = 1E-4;
+		confparams_cpr->absErrBound = 1E-10;
+		confparams_cpr->relBoundRatio = 1E-10;
 		confparams_cpr->accelerate_pw_rel_compression = 1;
 		
 		confparams_cpr->pw_relBoundRatio = 1E-3;

deps/SZ/sz/src/td_sz.c

+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "td_sz.h"
+#include "CompressElement.h"
+#include "DynamicByteArray.h"
+#include "DynamicIntArray.h"
+#include "TightDataPointStorageD.h"
+#include "TightDataPointStorageF.h"
+#include "zlib.h"
+#include "rw.h"
+#include "Huffman.h"
+#include "conf.h"
+#include "utility.h"
+#include "exafelSZ.h"
+#include "sz.h"
+#include "defines.h"
+
+
+//
+// compress interface to tdengine return value is count of output with bytes
+//
+int tdszCompress(int type, const char * input, const int nelements, const char * output)
+{
+	size_t outSize = 0;
+	void* pOut = SZ_compress(type, (void*)input, &outSize, 0, 0, 0, 0, (size_t)nelements);
+	if(pOut == NULL)
+		return 0;
+	
+	// copy to dest
+	memcpy(output, pOut, outSize);
+	free(pOut);
+    return outSize;
+}
+
+//
+// decompress interface to tdengine return value is count of output with bytes
+//
+int tdszDecompress(int type, const char * input, int compressedSize, const int nelements, const char * output)
+{
+	int width = 0;
+	if(type == SZ_FLOAT)
+	    width = sizeof(float);
+	else if(type == SZ_DOUBLE)
+	    width = sizeof(double);	
+	else
+	    return 0;	
+
+	void* pOut = SZ_decompress(type, (void*)input, compressedSize, 0, 0, 0, 0, (size_t)nelements);
+	if(pOut == NULL)
+		return 0;
+
+
+	size_t outSize = nelements * width;
+
+	// copy to dest
+	memcpy(output, pOut, outSize);
+	free(pOut);
+
+    return outSize;
+}

deps/SZ/zlib/CMakeLists.txt

-add_library(ZLIB 
-  ./gzclose.c
-  ./uncompr.c
-  ./trees.c
-  ./gzread.c
-  ./adler32.c
-  ./gzwrite.c
-  ./compress.c
-  ./inftrees.c
-  ./crc32.c
-  ./inffast.c
-  ./zutil.c
-  ./gzlib.c
-  ./infback.c
-  ./inflate.c
-  ./deflate.c
-  )
-
-target_include_directories(ZLIB
-  PUBLIC 
-  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-  )
-
-

deps/SZ/zstd/CMakeLists.txt

-add_library(zstd
-  ./common/entropy_common.c
-  ./common/pool.c
-  ./common/threading.c
-  ./common/debug.c
-  ./common/xxhash.c
-  ./common/fse_decompress.c
-  ./common/zstd_common.c
-  ./common/error_private.c
-  ./compress/zstd_ldm.c
-  ./compress/zstd_lazy.c
-  ./compress/huf_compress.c
-  ./compress/zstd_opt.c
-  ./compress/zstd_double_fast.c
-  ./compress/zstd_compress.c
-  ./compress/zstd_fast.c
-  ./compress/fse_compress.c
-  ./compress/zstdmt_compress.c
-  ./compress/hist.c
-  ./decompress/zstd_decompress.c
-  ./decompress/huf_decompress.c
-  ./deprecated/zbuff_common.c
-  ./deprecated/zbuff_compress.c
-  ./deprecated/zbuff_decompress.c
-  ./legacy/zstd_v05.c
-  ./legacy/zstd_v04.c
-  ./legacy/zstd_v06.c
-  ./legacy/zstd_v07.c
-  ./legacy/zstd_v03.c
-  ./legacy/zstd_v02.c
-  ./legacy/zstd_v01.c
-  ./dictBuilder/cover.c
-  ./dictBuilder/divsufsort.c
-  ./dictBuilder/zdict.c
-  )
-
-target_include_directories(zstd
-  PUBLIC
-  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/>
-  PRIVATE
-    ${CMAKE_CURRENT_SOURCE_DIR}/common
-    ${CMAKE_CURRENT_SOURCE_DIR}/compress
-    ${CMAKE_CURRENT_SOURCE_DIR}/decompress
-    ${CMAKE_CURRENT_SOURCE_DIR}/deprecated
-    ${CMAKE_CURRENT_SOURCE_DIR}/dictBuilder
-    ${CMAKE_CURRENT_SOURCE_DIR}/dll
-    ${CMAKE_CURRENT_SOURCE_DIR}/legacy
-  )
-
-
-
-

src/kit/taospack/taospack.c

@@ -142,7 +142,7 @@ bool testFile(const char* inFile, char algorithm){
   printf(" file %s have count=%d \n", inFile, cnt);
 
   cost_start();
-  int ret_len = tsCompressFloat(input, input_len, cnt, output, output_len, algorithm, buff, buff_len);
+  int ret_len = tsCompressFloatLossy(input, input_len, cnt, output, output_len, algorithm, buff, buff_len);
   if(ret_len == -1) {
     printf(" compress error.\n");
     return 0;
@@ -158,7 +158,7 @@ bool testFile(const char* inFile, char algorithm){
   //
   float* ft2 = (float*)malloc(input_len); 
   cost_start();
-  int code = tsDecompressFloat(output, ret_len, cnt, (char*)ft2, input_len, algorithm, buff, buff_len);
+  int code = tsDecompressFloatLossy(output, ret_len, cnt, (char*)ft2, input_len, algorithm, buff, buff_len);
   double use_ms2 = cost_end("Decompress");
   printf(" Decompress return length=%d \n", code);
 
@@ -184,24 +184,18 @@ bool testFile(const char* inFile, char algorithm){
 }
 
 int memTest();
+void test_threadsafe(int thread_count);
 
 //
 //  main
 //
 int main(int argc, char *argv[]) {
   printf("welcome to use taospack tools v1.1. sizeof(STColumn) = %lu\n", sizeof(STColumn));
-  
-  FILE* fp = fopen("./a.out", "w+");
-  STColumn* pcol = malloc(sizeof(STColumn));
-  pcol->type = 1;
-  pcol->colId = 2;
-  pcol->bytes = 3;
-  pcol->offset = 4;
-  fwrite(pcol, 1, sizeof(STColumn), fp);
-  fwrite("aaa", 1, 3, fp);
-  fclose(fp);
-  printf(" write a.out ok.\n");
-  return 0;
+ 
+  tsCompressInit();
+  //
+  //tsCompressExit();
+  //return 1; 
 
   if(argc == 3){
     char algo = 0;
@@ -213,6 +207,11 @@ int main(int argc, char *argv[]) {
         algo = TWO_STAGE_COMP;
     }
 
+    if(strcmp(argv[1], "-safe") == 0) {
+        test_threadsafe(atoi(argv[2]));
+        return 0;
+    }
+
     if(algo == 0){
       printf(" no param -tone -ttwo \n");
       return 0;
@@ -222,6 +221,10 @@ int main(int argc, char *argv[]) {
     printf(" test file %s. \n", ret ? "ok" : "err");
     return 1;
 
+  } else if( argc == 2) {
+    if(strcmp(argv[1], "-mem") == 0) {
+      memTest();
+    } 
   }
 
   //memTest();
@@ -294,12 +297,14 @@ bool txt_to_bin(const char* inFile, const char* outFile){
   return true;
 }
 
+int notsame_cnt  = 0;
 
 int memTest() {
   //
   //  compress
   //
-  //float ft1[FT_CNT] = {1.2, 2.4, 3.33, 4.444, 5.555, 6.6666, 7.7777, 8.88888};
+  //float ft1[] = {1.2, 2.4, 3.33, 4.444, 5.555, 6.6666, 7.7777, 8.88888,1.2, 2.4, 3.33, 4.444, 5.555, 6.6666, 7.7777, 8.88888,1.2, 2.4, 3.33, 4.444, 5.555, 6.6666, 7.7777, 8.88888};
+  ///*
   float ft1[ ] = {\
       3.8959999084472656, 3.8970000743865967, 3.8980000019073486, 3.8980000019073486, 3.8970000743865967, 3.8970000743865967, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8980000019073486, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8980000019073486, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8980000019073486, 3.8949999809265137, 3.8980000019073486, 3.8970000743865967, 3.8970000743865967, 3.8970000743865967, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8980000019073486, 3.8949999809265137, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8980000019073486, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8980000019073486, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8949999809265137, 3.8940000534057617, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8980000019073486, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8980000019073486, 3.8949999809265137, 3.8959999084472656, 3.8980000019073486, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8949999809265137, 3.8940000534057617, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8980000019073486, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8940000534057617, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8980000019073486, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8940000534057617, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8989999294281006, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8970000743865967, 3.8949999809265137, 3.8949999809265137, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8940000534057617, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8929998874664307, 3.8940000534057617, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.9010000228881836, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8940000534057617, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8970000743865967, 3.8980000019073486, 3.8970000743865967, 3.8989999294281006, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8940000534057617\
      ,3.8949999809265137, 3.8970000743865967, 3.8980000019073486, 3.8980000019073486, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8970000743865967, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8970000743865967, 3.8949999809265137, 3.8940000534057617, 3.8949999809265137, 3.8940000534057617, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8949999809265137, 3.8949999809265137, 3.8970000743865967, 3.8940000534057617, 3.8970000743865967, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8940000534057617, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8940000534057617, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8970000743865967, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8940000534057617, 3.8929998874664307, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8970000743865967, 3.8940000534057617, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8940000534057617, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8940000534057617, 3.8940000534057617, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8940000534057617, 3.8929998874664307, 3.8959999084472656, 3.8940000534057617, 3.8949999809265137, 3.8940000534057617, 3.8970000743865967, 3.8959999084472656, 3.8970000743865967, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8940000534057617, 3.8940000534057617, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8970000743865967, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8970000743865967, 3.8949999809265137, 3.8940000534057617, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8940000534057617, 3.8949999809265137, 3.8970000743865967, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8929998874664307, 3.8959999084472656, 3.8949999809265137, 3.8940000534057617, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8949999809265137, 3.8980000019073486, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8940000534057617, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8949999809265137, 3.8940000534057617, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8940000534057617, 3.8929998874664307, 3.8940000534057617, 3.8949999809265137, 3.8940000534057617, 3.8959999084472656, 3.8959999084472656, 3.8940000534057617, 3.8940000534057617, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8940000534057617, 3.8949999809265137, 3.9000000953674316, 3.8940000534057617, 3.8929998874664307, 3.8929998874664307, 3.8929998874664307, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8959999084472656, 3.8980000019073486, 3.8949999809265137, 3.8949999809265137, 3.8949999809265137, 3.8940000534057617, 3.8929998874664307\
@@ -311,8 +316,18 @@ int memTest() {
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+     ,3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.63100004196167, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.63100004196167, 3.632999897003174, 3.632999897003174, 3.63100004196167, 3.63100004196167, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.63100004196167, 3.631999969482422, 3.632999897003174, 3.634000062942505, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.63100004196167, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.63100004196167, 3.63100004196167, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.63100004196167, 3.63100004196167, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.63100004196167, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.631999969482422, 3.632999897003174, 3.631999969482422, 3.632999897003174, 3.631999969482422
      };
-
+//*/
   const char* input = (const char*) ft1;
   int input_len = sizeof(ft1);
   int cnt = input_len/sizeof(float);
@@ -326,7 +341,7 @@ int memTest() {
   int buff_len = sizeof(buff);
 
   cost_start();
-  int ret_len = tsCompressFloat(input, input_len, cnt, output, output_len, ONE_STAGE_COMP, buff, buff_len);
+  int ret_len = tsCompressFloatLossy(input, input_len, cnt, output, output_len, ONE_STAGE_COMP, buff, buff_len);
   if(ret_len == -1) {
     printf(" compress error.\n");
     return 0;
@@ -341,7 +356,7 @@ int memTest() {
   //
   float* ft2 = (float*)malloc(input_len); 
   cost_start();
-  int code = tsDecompressFloat(output, ret_len, cnt, (char*)ft2, input_len, ONE_STAGE_COMP, buff, buff_len);
+  int code = tsDecompressFloatLossy(output, ret_len, cnt, (char*)ft2, input_len, ONE_STAGE_COMP, buff, buff_len);
   cost_end("tsde-compress");
   printf(" de-compress return code=%d \n", code);
 
@@ -350,6 +365,7 @@ int memTest() {
   // show
   //
   int  same_cnt = 0;
+  int  diffshow_cnt = 0;
   for(int i=0; i< cnt; i++){
 
     if(i < 10)
@@ -357,11 +373,45 @@ int memTest() {
 
     if(ft1[i] == ft2[i])
         same_cnt ++;
+    else {
+      notsame_cnt++;
+      if(i >= 10 && ++diffshow_cnt < 50){
+         printf(" i=%d ft1=%.20f ft2=%.20f  diff\n", i, ft1[i], ft2[i]);
+      }
+    }
   }
    
-  printf(" ---- result : same =%d cnt=%d  rate:%d%% ---- \n", same_cnt, cnt, same_cnt*100/cnt);
+  printf(" ---- result : same =%d cnt=%d  rate:%d%% global not same=%d---- \n", same_cnt, cnt, same_cnt*100/cnt, notsame_cnt);
    
   free(output); 
   free(ft2);
   return 1;
+}
+
+void* memTestThread(void* lparam) {
+  //memTest();
+  printf(" enter thread ....\n");
+  memTest();
+  return NULL;
+}
+
+void test_threadsafe(int thread_count){
+  printf(" test thread safe . thread count=%d \n", thread_count);
+  pthread_t handle[1000000];
+  int i=0;
+  for(i=0; i< thread_count; i++){
+    printf("  create thread %d... \n", i);
+    pthread_attr_t attr;
+    pthread_attr_init(&attr);
+    pthread_create(&handle[i], &attr, memTestThread, NULL);
+    pthread_attr_destroy(&attr);
+  }
+
+  for(i=0; i< thread_count; i++)
+  {
+    pthread_join(handle[i], NULL);
+  }
+  
+  printf(" test thread safe end. not same count=%d\n", notsame_cnt);
+  
 }
\ No newline at end of file

src/util/CMakeLists.txt

@@ -4,6 +4,7 @@ PROJECT(TDengine)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/rpc/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/sync/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/rmonotonic/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/SZ/sz/include)
 AUX_SOURCE_DIRECTORY(src SRC)
 ADD_LIBRARY(tutil ${SRC})
 TARGET_LINK_LIBRARIES(tutil pthread os lz4 z rmonotonic SZ )

src/util/inc/tscompression.h

@@ -23,6 +23,7 @@ extern "C" {
 #include "taosdef.h"
 #include "tutil.h"
 
+
 #define COMP_OVERFLOW_BYTES 2
 #define BITS_PER_BYTE 8
 // Masks
@@ -46,7 +47,13 @@ extern int tsCompressDoubleImp(const char *const input, const int nelements, cha
 extern int tsDecompressDoubleImp(const char *const input, const int nelements, char *const output);
 extern int tsCompressFloatImp(const char *const input, const int nelements, char *const output);
 extern int tsDecompressFloatImp(const char *const input, const int nelements, char *const output);
+// lossy
+int tsCompressFloatLossyImp(const char * input, const int nelements, const char * output);
+int tsDecompressFloatLossyImp(const char * input, int compressedSize, const int nelements, const char * output);
+int tsCompressDoubleLossyImp(const char * input, const int nelements, const char * output);
+int tsDecompressDoubleLossyImp(const char * input, int compressedSize, const int nelements, const char * output);
 
+// init
 bool tsCompressInit();
 void tsCompressExit();
 
@@ -242,25 +249,28 @@ static FORCE_INLINE int tsDecompressDouble(const char *const input, int compress
   }
 }
 
+//
+//  lossy float double
+//
 static FORCE_INLINE int tsCompressFloatLossy(const char *const input, int inputSize, const int nelements, char *const output, int outputSize,
                     char algorithm, char *const buffer, int bufferSize) {
-                      return -1;
-                    }
+  return tsCompressFloatLossyImp(input, nelements, output);
+}
 
 static FORCE_INLINE int tsDecompressFloatLossy(const char *const input, int compressedSize, const int nelements, char *const output,
                       int outputSize, char algorithm, char *const buffer, int bufferSize){
-                        return -1;
-                      }
+  return tsDecompressFloatLossyImp(input, compressedSize, nelements, output);
+}
 
 static FORCE_INLINE int tsCompressDoubleLossy(const char *const input, int inputSize, const int nelements, char *const output, int outputSize,
                      char algorithm, char *const buffer, int bufferSize){
-                       return -1;
-                     }
+  return tsCompressDoubleLossyImp(input, nelements, output);
+}
 
 static FORCE_INLINE int tsDecompressDoubleLossy(const char *const input, int compressedSize, const int nelements, char *const output,
                        int outputSize, char algorithm, char *const buffer, int bufferSize){
-                         return -1;
-                       }
+  return tsDecompressDoubleLossyImp(input, compressedSize, nelements, output);
+}
 
 
 static FORCE_INLINE int tsCompressTimestamp(const char *const input, int inputSize, const int nelements, char *const output, int outputSize,

src/util/src/tcompression.c

@@ -49,6 +49,7 @@
 
 #include "os.h"
 #include "lz4.h"
+#include "td_sz.h"
 #include "taosdef.h"
 #include "tscompression.h"
 #include "tulog.h"
@@ -894,49 +895,29 @@ int SZ_Init(const char *configFilePath);
 
 
 bool tsCompressInit() {
-  int i = 7*9;
-  i %= 10;
-  if (i > 10000) {
-  tsCompressFloatLossy(NULL, 0, 0, NULL, 0, 0, NULL, 0);
-  tsDecompressFloatLossy(NULL, 0, 0, NULL, 0, 0, NULL, 0);
-  tsCompressDoubleLossy(NULL, 0, 0, NULL, 0, 0, NULL, 0);
-  tsDecompressDoubleLossy(NULL, 0, 0, NULL, 0, 0, NULL, 0); 
-  tsCompressExit();
- 
-  }
-
   SZ_Init("./sz.config");
   return true;
 }
 
 void tsCompressExit(){
-  tsCompressInit();
+  
 }
 
 //
 //   ----------  float double lossy  -----------
 //
-
-/*
-static int  tsCompressFloatLossy(const char *const input, int inputSize, const int nelements, char *const output, int outputSize,
-                    char algorithm, char *const buffer, int bufferSize) {
-
-    return -1;
+int tsCompressFloatLossyImp(const char * input, const int nelements, const char * output){
+  return tdszCompress(SZ_FLOAT, input, nelements, output);
 }
 
-static int tsDecompressFloatLossy(const char *const input, int compressedSize, const int nelements, char *const output,
-                      int outputSize, char algorithm, char *const buffer, int bufferSize) {
-
-    return -1;
+int tsDecompressFloatLossyImp(const char * input, int compressedSize, const int nelements, const char * output){
+  return tdszDecompress(SZ_FLOAT, input, compressedSize, nelements, output);
 }
 
-static int tsCompressDoubleLossy(const char *const input, int inputSize, const int nelements, char *const output, int outputSize,
-                     char algorithm, char *const buffer, int bufferSize) {
-    return -1;
+int tsCompressDoubleLossyImp(const char * input, const int nelements, const char * output){
+  return tdszCompress(SZ_DOUBLE, input, nelements, output);
 }
 
-static int tsDecompressDoubleLossy(const char *const input, int compressedSize, const int nelements, char *const output,
-                       int outputSize, char algorithm, char *const buffer, int bufferSize) {
-    return -1;
-}
+int tsDecompressDoubleLossyImp(const char * input, int compressedSize, const int nelements, const char * output){
+  return tdszDecompress(SZ_DOUBLE, input, compressedSize, nelements, output);
+}
\ No newline at end of file
-*/
\ No newline at end of file