Index: third_party/sqlite/sqlite-src-3080704/tool/speedtest16.c |
diff --git a/third_party/sqlite/sqlite-src-3080704/tool/speedtest16.c b/third_party/sqlite/sqlite-src-3080704/tool/speedtest16.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e81f1a6dba0e067fbd84677ad6ba7fa5a5c4ec66 |
--- /dev/null |
+++ b/third_party/sqlite/sqlite-src-3080704/tool/speedtest16.c |
@@ -0,0 +1,169 @@ |
+/* |
+** Performance test for SQLite. |
+** |
+** This program reads ASCII text from a file named on the command-line. |
+** It converts each SQL statement into UTF16 and submits it to SQLite |
+** for evaluation. A new UTF16 database is created at the beginning of |
+** the program. All statements are timed using the high-resolution timer |
+** built into Intel-class processors. |
+** |
+** To compile this program, first compile the SQLite library separately |
+** will full optimizations. For example: |
+** |
+** gcc -c -O6 -DSQLITE_THREADSAFE=0 sqlite3.c |
+** |
+** Then link against this program. But to do optimize this program |
+** because that defeats the hi-res timer. |
+** |
+** gcc speedtest16.c sqlite3.o -ldl -I../src |
+** |
+** Then run this program with a single argument which is the name of |
+** a file containing SQL script that you want to test: |
+** |
+** ./a.out database.db test.sql |
+*/ |
+#include <stdio.h> |
+#include <string.h> |
+#include <stdlib.h> |
+#include <ctype.h> |
+#include <unistd.h> |
+#include "sqlite3.h" |
+ |
+/* |
+** hwtime.h contains inline assembler code for implementing |
+** high-performance timing routines. |
+*/ |
+#include "hwtime.h" |
+ |
+/* |
+** Convert a zero-terminated ASCII string into a zero-terminated |
+** UTF-16le string. Memory to hold the returned string comes |
+** from malloc() and should be freed by the caller. |
+*/ |
+static void *asciiToUtf16le(const char *z){ |
+ int n = strlen(z); |
+ char *z16; |
+ int i, j; |
+ |
+ z16 = malloc( n*2 + 2 ); |
+ for(i=j=0; i<=n; i++){ |
+ z16[j++] = z[i]; |
+ z16[j++] = 0; |
+ } |
+ return (void*)z16; |
+} |
+ |
+/* |
+** Timers |
+*/ |
+static sqlite_uint64 prepTime = 0; |
+static sqlite_uint64 runTime = 0; |
+static sqlite_uint64 finalizeTime = 0; |
+ |
+/* |
+** Prepare and run a single statement of SQL. |
+*/ |
+static void prepareAndRun(sqlite3 *db, const char *zSql){ |
+ void *utf16; |
+ sqlite3_stmt *pStmt; |
+ const void *stmtTail; |
+ sqlite_uint64 iStart, iElapse; |
+ int rc; |
+ |
+ printf("****************************************************************\n"); |
+ printf("SQL statement: [%s]\n", zSql); |
+ utf16 = asciiToUtf16le(zSql); |
+ iStart = sqlite3Hwtime(); |
+ rc = sqlite3_prepare16_v2(db, utf16, -1, &pStmt, &stmtTail); |
+ iElapse = sqlite3Hwtime() - iStart; |
+ prepTime += iElapse; |
+ printf("sqlite3_prepare16_v2() returns %d in %llu cycles\n", rc, iElapse); |
+ if( rc==SQLITE_OK ){ |
+ int nRow = 0; |
+ iStart = sqlite3Hwtime(); |
+ while( (rc=sqlite3_step(pStmt))==SQLITE_ROW ){ nRow++; } |
+ iElapse = sqlite3Hwtime() - iStart; |
+ runTime += iElapse; |
+ printf("sqlite3_step() returns %d after %d rows in %llu cycles\n", |
+ rc, nRow, iElapse); |
+ iStart = sqlite3Hwtime(); |
+ rc = sqlite3_finalize(pStmt); |
+ iElapse = sqlite3Hwtime() - iStart; |
+ finalizeTime += iElapse; |
+ printf("sqlite3_finalize() returns %d in %llu cycles\n", rc, iElapse); |
+ } |
+ free(utf16); |
+} |
+ |
+int main(int argc, char **argv){ |
+ void *utf16; |
+ sqlite3 *db; |
+ int rc; |
+ int nSql; |
+ char *zSql; |
+ int i, j; |
+ FILE *in; |
+ sqlite_uint64 iStart, iElapse; |
+ sqlite_uint64 iSetup = 0; |
+ int nStmt = 0; |
+ int nByte = 0; |
+ |
+ if( argc!=3 ){ |
+ fprintf(stderr, "Usage: %s FILENAME SQL-SCRIPT\n" |
+ "Runs SQL-SCRIPT as UTF16 against a UTF16 database\n", |
+ argv[0]); |
+ exit(1); |
+ } |
+ in = fopen(argv[2], "r"); |
+ fseek(in, 0L, SEEK_END); |
+ nSql = ftell(in); |
+ zSql = malloc( nSql+1 ); |
+ fseek(in, 0L, SEEK_SET); |
+ nSql = fread(zSql, 1, nSql, in); |
+ zSql[nSql] = 0; |
+ |
+ printf("SQLite version: %d\n", sqlite3_libversion_number()); |
+ unlink(argv[1]); |
+ utf16 = asciiToUtf16le(argv[1]); |
+ iStart = sqlite3Hwtime(); |
+ rc = sqlite3_open16(utf16, &db); |
+ iElapse = sqlite3Hwtime() - iStart; |
+ iSetup = iElapse; |
+ printf("sqlite3_open16() returns %d in %llu cycles\n", rc, iElapse); |
+ free(utf16); |
+ for(i=j=0; j<nSql; j++){ |
+ if( zSql[j]==';' ){ |
+ int isComplete; |
+ char c = zSql[j+1]; |
+ zSql[j+1] = 0; |
+ isComplete = sqlite3_complete(&zSql[i]); |
+ zSql[j+1] = c; |
+ if( isComplete ){ |
+ zSql[j] = 0; |
+ while( i<j && isspace(zSql[i]) ){ i++; } |
+ if( i<j ){ |
+ nStmt++; |
+ nByte += j-i; |
+ prepareAndRun(db, &zSql[i]); |
+ } |
+ zSql[j] = ';'; |
+ i = j+1; |
+ } |
+ } |
+ } |
+ iStart = sqlite3Hwtime(); |
+ sqlite3_close(db); |
+ iElapse = sqlite3Hwtime() - iStart; |
+ iSetup += iElapse; |
+ printf("sqlite3_close() returns in %llu cycles\n", iElapse); |
+ printf("\n"); |
+ printf("Statements run: %15d\n", nStmt); |
+ printf("Bytes of SQL text: %15d\n", nByte); |
+ printf("Total prepare time: %15llu cycles\n", prepTime); |
+ printf("Total run time: %15llu cycles\n", runTime); |
+ printf("Total finalize time: %15llu cycles\n", finalizeTime); |
+ printf("Open/Close time: %15llu cycles\n", iSetup); |
+ printf("Total Time: %15llu cycles\n", |
+ prepTime + runTime + finalizeTime + iSetup); |
+ return 0; |
+} |