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Modify CLI to optionally display "stats".

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FossilOrigin-Name: 419ce0ed89d10252492b2926817259899ee74e71
This commit is contained in:
shaneh
2010-07-28 16:05:34 +00:00
parent 39539804c6
commit 642d8b87fe
5 changed files with 281 additions and 31 deletions
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118
src/shell.c
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@@ -398,6 +398,7 @@ struct previous_mode_data {
struct callback_data {
sqlite3 *db; /* The database */
int echoOn; /* True to echo input commands */
int statsOn; /* True to display memory stats before each finalize */
int cnt; /* Number of records displayed so far */
FILE *out; /* Write results here */
int mode; /* An output mode setting */
@@ -961,6 +962,86 @@ static char *save_err_msg(
return zErrMsg;
}
/*
** Display memory stats.
*/
static int display_stats(
sqlite3 *db, /* Database to query */
struct callback_data *pArg, /* Pointer to struct callback_data */
int bReset /* True to reset the stats */
){
int iCur;
int iHiwtr;
if( pArg && pArg->out ){
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_MEMORY_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Mem Used (Excludes Scratch/Pcache): %d (max %d) bytes\n", iCur, iHiwtr);
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Number of Allocations: %d (max %d)\n", iCur, iHiwtr);
/*
** Not currently used by the CLI.
** iHiwtr = iCur = -1;
** sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &iCur, &iHiwtr, bReset);
** fprintf(pArg->out, "Number of Pcache Pages Used: %d (max %d) pages\n", iCur, iHiwtr);
*/
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Number of Pcache Overflow Bytes: %d (max %d) bytes\n", iCur, iHiwtr);
/*
** Not currently used by the CLI.
** iHiwtr = iCur = -1;
** sqlite3_status(SQLITE_STATUS_SCRATCH_USED, &iCur, &iHiwtr, bReset);
** fprintf(pArg->out, "Number of Scratch Allocations Used: %d (max %d)\n", iCur, iHiwtr);
*/
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_SCRATCH_OVERFLOW, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Number of Scratch Overflow Bytes: %d (max %d) bytes\n", iCur, iHiwtr);
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Largest Allocation: %d bytes\n", iHiwtr);
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_PAGECACHE_SIZE, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Largest Pcache Allocation: %d bytes\n", iHiwtr);
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_SCRATCH_SIZE, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Largest Scratch Allocation: %d bytes\n", iHiwtr);
#ifdef YYTRACKMAXSTACKDEPTH
iHiwtr = iCur = -1;
sqlite3_status(SQLITE_STATUS_PARSER_STACK, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Deepest Parser Stack: %d (max %d)\n", iCur, iHiwtr);
#endif
}
if( pArg && pArg->out && db ){
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Lookaside Slots Used: %d (max %d)\n", iCur, iHiwtr);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Pcache Heap Usage: %d bytes\n", iCur);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Schema Heap Usage: %d bytes\n", iCur);
iHiwtr = iCur = -1;
sqlite3_db_status(db, SQLITE_DBSTATUS_STMT_USED, &iCur, &iHiwtr, bReset);
fprintf(pArg->out, "Statement Heap/Lookaside Usage: %d bytes\n", iCur);
}
if( pArg && pArg->out && db && pArg->pStmt ){
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_FULLSCAN_STEP, bReset);
fprintf(pArg->out, "Fullscan Steps: %d\n", iCur);
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_SORT, bReset);
fprintf(pArg->out, "Sort Operations: %d\n", iCur);
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_AUTOINDEX, bReset);
fprintf(pArg->out, "Autoindex Inserts: %d\n", iCur);
}
return 0;
}
/*
** Execute a statement or set of statements. Print
** any result rows/columns depending on the current mode
@@ -1000,10 +1081,16 @@ static int shell_exec(
continue;
}
/* save off the prepared statment handle and reset row count */
if( pArg ){
pArg->pStmt = pStmt;
pArg->cnt = 0;
}
/* echo the sql statement if echo on */
if( pArg->echoOn ){
if( pArg && pArg->echoOn ){
const char *zStmtSql = sqlite3_sql(pStmt);
fprintf(pArg->out,"%s\n", zStmtSql ? zStmtSql : zSql);
fprintf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql);
}
/* perform the first step. this will tell us if we
@@ -1029,11 +1116,6 @@ static int shell_exec(
for(i=0; i<nCol; i++){
azCols[i] = (char *)sqlite3_column_name(pStmt, i);
}
/* save off the prepared statment handle and reset row count */
if( pArg ){
pArg->pStmt = pStmt;
pArg->cnt = 0;
}
do{
/* extract the data and data types */
for(i=0; i<nCol; i++){
@@ -1056,9 +1138,6 @@ static int shell_exec(
}
} while( SQLITE_ROW == rc );
sqlite3_free(pData);
if( pArg ){
pArg->pStmt = NULL;
}
}
}else{
do{
@@ -1067,6 +1146,11 @@ static int shell_exec(
}
}
/* print usage stats if stats on */
if( pArg && pArg->statsOn ){
display_stats(db, pArg, 0);
}
/* Finalize the statement just executed. If this fails, save a
** copy of the error message. Otherwise, set zSql to point to the
** next statement to execute. */
@@ -1077,6 +1161,11 @@ static int shell_exec(
}else if( pzErrMsg ){
*pzErrMsg = save_err_msg(db);
}
/* clear saved stmt handle */
if( pArg ){
pArg->pStmt = NULL;
}
}
} /* end while */
@@ -1256,6 +1345,7 @@ static char zHelp[] =
" LIKE pattern TABLE.\n"
".separator STRING Change separator used by output mode and .import\n"
".show Show the current values for various settings\n"
".stats ON|OFF Turn stats on or off\n"
".tables ?TABLE? List names of tables\n"
" If TABLE specified, only list tables matching\n"
" LIKE pattern TABLE.\n"
@@ -2001,6 +2091,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){
fprintf(p->out,"%9.9s: ", "separator");
output_c_string(p->out, p->separator);
fprintf(p->out, "\n");
fprintf(p->out,"%9.9s: %s\n","stats", p->statsOn ? "on" : "off");
fprintf(p->out,"%9.9s: ","width");
for (i=0;i<(int)ArraySize(p->colWidth) && p->colWidth[i] != 0;i++) {
fprintf(p->out,"%d ",p->colWidth[i]);
@@ -2008,6 +2099,10 @@ static int do_meta_command(char *zLine, struct callback_data *p){
fprintf(p->out,"\n");
}else
if( c=='s' && strncmp(azArg[0], "stats", n)==0 && nArg>1 && nArg<3 ){
p->statsOn = booleanValue(azArg[1]);
}else
if( c=='t' && n>1 && strncmp(azArg[0], "tables", n)==0 && nArg<3 ){
char **azResult;
int nRow;
@@ -2391,6 +2486,7 @@ static const char zOptions[] =
" -line set output mode to 'line'\n"
" -list set output mode to 'list'\n"
" -separator 'x' set output field separator (|)\n"
" -stats print memory stats before each finalize\n"
" -nullvalue 'text' set text string for NULL values\n"
" -version show SQLite version\n"
;
@@ -2555,6 +2651,8 @@ int main(int argc, char **argv){
data.showHeader = 0;
}else if( strcmp(z,"-echo")==0 ){
data.echoOn = 1;
}else if( strcmp(z,"-stats")==0 ){
data.statsOn = 1;
}else if( strcmp(z,"-bail")==0 ){
bail_on_error = 1;
}else if( strcmp(z,"-version")==0 ){