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From: Massimo Dal Zotto <dz@cs.unitn.it>

Browse Source 
> tprintf.patch
>
>       tprintf.patch
>
>       adds functions and macros which implement a conditional trace package
>       with the ability to change flags and numeric options of running
>       backends at runtime.
>       Options/flags can be specified in the command line and/or read from
>       the file pg_options in the data directory.
This commit is contained in:
Marc G. Fournier
1998-08-25 21:34:10 +00:00
parent 51e8e187d1
commit 7414d61950
9 changed files with 430 additions and 188 deletions
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270
src/backend/tcop/postgres.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.85 1998/08/25 21:04:38 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/tcop/postgres.c,v 1.86 1998/08/25 21:34:04 scrappy Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -36,7 +36,9 @@
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* aix */
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include "postgres.h"
#include "miscadmin.h"
@ -66,6 +68,7 @@
#include "tcop/utility.h"
#include "utils/mcxt.h"
#include "utils/rel.h"
#include "utils/ps_status.h"
#if FALSE
#include "nodes/relation.h"
@ -83,27 +86,43 @@
#include "nodes/memnodes.h"
#endif
#include "utils/trace.h"
#ifdef MULTIBYTE
#include "mb/pg_wchar.h"
#endif
/*
* Trace flags, see backend/utils/misc/trace.c
*/
#define Verbose pg_options[TRACE_VERBOSE]
#define DebugPrintQuery pg_options[TRACE_QUERY]
#define DebugPrintPlan pg_options[TRACE_PLAN]
#define DebugPrintParse pg_options[TRACE_PARSE]
#define ShowParserStats pg_options[TRACE_PARSERSTATS]
#define ShowPlannerStats pg_options[TRACE_PLANNERSTATS]
#define ShowExecutorStats pg_options[TRACE_EXECUTORSTATS]
#define DebugPrintRewrittenParsetree \
pg_options[TRACE_REWRITTEN]
#ifdef LOCK_MGR_DEBUG
#define LockDebug pg_options[TRACE_LOCKS]
#endif
#define DeadlockCheckTimer pg_options[OPT_DEADLOCKTIMEOUT]
#define HostnameLookup pg_options[OPT_HOSTLOOKUP]
#define ShowPortNumber pg_options[OPT_SHOWPORTNUMBER]
/* ----------------
* global variables
* ----------------
*/
static bool DebugPrintQuery = false;
static bool DebugPrintPlan = false;
static bool DebugPrintParse = false;
static bool DebugPrintRewrittenParsetree = false;
/*static bool EnableRewrite = true; , never changes why have it*/
CommandDest whereToSendOutput;
const char **ps_status; /* this is our 'ps' status, argv[3] */
#ifdef LOCK_MGR_DEBUG
extern int lockDebug;
/* Define status buffer needed by PS_SET_STATUS */
PS_DEFINE_BUFFER;
#endif
extern int lockingOff;
extern int NBuffers;
@ -129,9 +148,6 @@ extern int NBuffers;
static int EchoQuery = 0; /* default don't echo */
time_t tim;
char pg_pathname[256];
static int ShowParserStats;
static int ShowPlannerStats;
int ShowExecutorStats;
FILE *StatFp;
/* ----------------
@ -260,7 +276,7 @@ InteractiveBackend(char *inBuf)
if (end)
{
if (!Quiet)
if (Verbose)
puts("EOF");
IsEmptyQuery = true;
proc_exit(0);
@ -278,7 +294,7 @@ InteractiveBackend(char *inBuf)
* ----------------
*/
if (EchoQuery)
printf("query is: %s\n", inBuf);
printf("query: %s\n", inBuf);
return ('Q');
}
@ -521,9 +537,9 @@ pg_parse_and_plan(char *query_string, /* string to execute */
}
}
if (DebugPrintRewrittenParsetree == true)
if (DebugPrintRewrittenParsetree)
{
printf("\n---- \tafter rewriting:\n");
TPRINTF(TRACE_REWRITTEN, "after rewriting:");
for (i = 0; i < querytree_list->len; i++)
{
@ -584,11 +600,10 @@ pg_parse_and_plan(char *query_string, /* string to execute */
* also for queries in functions. DZ - 27-8-1996
* ----------------
*/
if (DebugPrintPlan == true)
if (DebugPrintPlan)
{
printf("\n---- \tplan is :\n");
TPRINTF(TRACE_PLAN, "plan:");
nodeDisplay(plan);
printf("\n");
}
#endif
}
@ -696,11 +711,11 @@ pg_exec_query_dest(char *query_string, /* string to execute */
* because that is done in ProcessUtility.
* ----------------
*/
if (!Quiet)
{
time(&tim);
printf("\tProcessUtility() at %s\n", ctime(&tim));
}
if (DebugPrintQuery) {
TPRINTF(TRACE_QUERY, "ProcessUtility: %s", query_string);
} else if (Verbose) {
TPRINTF(TRACE_VERBOSE, "ProcessUtility");
}
ProcessUtility(querytree->utilityStmt, dest);
@ -726,11 +741,10 @@ pg_exec_query_dest(char *query_string, /* string to execute */
* print plan if debugging
* ----------------
*/
if (DebugPrintPlan == true)
if (DebugPrintPlan)
{
printf("\n---- plan is :\n");
TPRINTF(TRACE_PLAN, "plan:");
nodeDisplay(plan);
printf("\n");
}
#endif
@ -743,10 +757,9 @@ pg_exec_query_dest(char *query_string, /* string to execute */
for (j = 0; j < _exec_repeat_; j++)
{
if (!Quiet)
if (Verbose)
{
time(&tim);
printf("\tProcessQuery() at %s\n", ctime(&tim));
TPRINTF(TRACE_VERBOSE, "ProcessQuery");
}
ProcessQuery(querytree, plan, dest);
}
@ -775,7 +788,7 @@ pg_exec_query_dest(char *query_string, /* string to execute */
/* --------------------------------
* signal handler routines used in PostgresMain()
*
* handle_warn() is used to catch kill(getpid(), SIGHUP) which
* handle_warn() is used to catch kill(getpid(),SIGQUIT) which
* occurs when elog(ERROR) is called.
*
* quickdie() occurs when signalled by the postmaster.
@ -887,17 +900,20 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
flagEu = false;
int flag;
char *DBName = NULL;
int errs = 0;
char *DBName = NULL;
int errs = 0;
char firstchar;
char parser_input[MAX_PARSE_BUFFER];
char *userName;
char firstchar;
char parser_input[MAX_PARSE_BUFFER];
char *userName;
char *remote_info;
char *remote_host;
unsigned short remote_port = 0;
char *DBDate = NULL;
extern int optind;
extern char *optarg;
extern short DebugLvl;
char *DBDate = NULL;
extern int optind;
extern char *optarg;
extern short DebugLvl;
/* ----------------
* parse command line arguments
@ -909,8 +925,9 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
*/
ShowStats = 0;
ShowParserStats = ShowPlannerStats = ShowExecutorStats = 0;
DeadlockCheckTimer = DEADLOCK_CHECK_TIMER;
#ifdef LOCK_MGR_DEBUG
lockDebug = 0;
LockDebug = 0;
#endif
/*
@ -944,6 +961,11 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
else if (strcasecmp(DBDate, "EURO") == 0)
EuroDates = TRUE;
}
/*
* Read default pg_options from file $DATADIR/pg_options.
*/
read_pg_options(0);
optind = 1; /* reset after postmaster usage */
@ -994,10 +1016,20 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
case 'd': /* debug level */
flagQ = false;
DebugLvl = (short) atoi(optarg);
if (DebugLvl > 1)
DebugPrintQuery = true;
if (DebugLvl > 2)
if (DebugLvl >= 1)
{
Verbose = DebugLvl;
}
if (DebugLvl >= 2)
{
DebugPrintQuery = true;
}
if (DebugLvl >= 3)
{
DebugPrintQuery = DebugLvl;
}
if (DebugLvl >= 4)
{
DebugPrintParse = true;
DebugPrintPlan = true;
DebugPrintRewrittenParsetree = true;
@ -1061,7 +1093,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
case 'K':
#ifdef LOCK_MGR_DEBUG
lockDebug = atoi(optarg);
LockDebug = atoi(optarg);
#else
fprintf(stderr, "Lock debug not compiled in\n");
#endif
@ -1122,6 +1154,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
* ----------------
*/
flagQ = true;
Verbose = 0;
break;
case 'S':
@ -1147,6 +1180,10 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
StatFp = stderr;
break;
case 'T':
parse_options(optarg);
break;
case 't':
/* ----------------
* tell postgres to report usage statistics (timings) for
@ -1278,47 +1315,79 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
}
Noversion = flagC;
Quiet = flagQ;
EchoQuery = flagE;
EuroDates = flagEu;
/* ----------------
* print flags
* ----------------
/*
* Find remote host name or address.
*/
if (!Quiet)
{
puts("\t---debug info---");
printf("\tQuiet = %c\n", Quiet ? 't' : 'f');
printf("\tNoversion = %c\n", Noversion ? 't' : 'f');
printf("\ttimings = %c\n", ShowStats ? 't' : 'f');
printf("\tdates = %s\n", EuroDates ? "European" : "Normal");
printf("\tbufsize = %d\n", NBuffers);
printf("\tsortmem = %d\n", SortMem);
if (IsUnderPostmaster) {
switch (MyProcPort->raddr.sa.sa_family) {
struct hostent *host_ent;
printf("\tquery echo = %c\n", EchoQuery ? 't' : 'f');
printf("\tDatabaseName = [%s]\n", DBName);
puts("\t----------------\n");
case AF_INET:
remote_info = remote_host = malloc(48);
remote_port = ntohs(MyProcPort->raddr.in.sin_port);
strcpy(remote_host, inet_ntoa(MyProcPort->raddr.in.sin_addr));
if (HostnameLookup) {
host_ent = \
gethostbyaddr((char *)&MyProcPort->raddr.in.sin_addr,
sizeof(MyProcPort->raddr.in.sin_addr),
AF_INET);
if (host_ent) {
strncpy(remote_host, host_ent->h_name, 48);
*(remote_host+47) = '\0';
}
}
if (ShowPortNumber) {
remote_info = malloc(strlen(remote_host)+6);
sprintf(remote_info, "%s:%d", remote_host, remote_port);
}
break;
case AF_UNIX:
remote_info = remote_host = "localhost";
break;
default:
remote_info = remote_host = "unknown";
break;
}
}
/* ----------------
* set process params for ps
* ----------------
*/
if (IsUnderPostmaster)
{
int i;
Assert(real_argc >= 4);
real_argv[1] = userName;
real_argv[2] = DBName;
ps_status = (const char **)&real_argv[3];
*ps_status = "idle";
for (i = 4; i < real_argc; i++)
real_argv[i] = ""; /* blank them */
if (IsUnderPostmaster) {
PS_INIT_STATUS(real_argc, real_argv, argv[0],
remote_info, userName, DBName);
PS_SET_STATUS("idle");
}
/* ----------------
* print flags
* ----------------
*/
if (Verbose)
{
if (Verbose == 1) {
TPRINTF(TRACE_VERBOSE, "started: host=%s user=%s database=%s",
remote_host, userName, DBName);
} else {
TPRINTF(TRACE_VERBOSE, "debug info:");
TPRINTF(TRACE_VERBOSE, "\tUser = %s", userName);
TPRINTF(TRACE_VERBOSE, "\tRemoteHost = %s", remote_host);
TPRINTF(TRACE_VERBOSE, "\tRemotePort = %d", remote_port);
TPRINTF(TRACE_VERBOSE, "\tDatabaseName = %s", DBName);
TPRINTF(TRACE_VERBOSE, "\tVerbose = %d", Verbose);
TPRINTF(TRACE_VERBOSE, "\tNoversion = %c", Noversion ? 't' : 'f');
TPRINTF(TRACE_VERBOSE, "\ttimings = %c", ShowStats ? 't' : 'f');
TPRINTF(TRACE_VERBOSE, "\tdates = %s",
EuroDates ? "European" : "Normal");
TPRINTF(TRACE_VERBOSE, "\tbufsize = %d", NBuffers);
TPRINTF(TRACE_VERBOSE, "\tsortmem = %d", SortMem);
TPRINTF(TRACE_VERBOSE, "\tquery echo = %c", EchoQuery ? 't' : 'f');
}
}
/* we just put a dummy here so we don't have to test everywhere */
else ps_status = malloc(sizeof(char *));
/* ----------------
* initialize portal file descriptors
@ -1341,19 +1410,19 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
SetProcessingMode(InitProcessing);
/* initialize */
if (!Quiet)
puts("\tInitPostgres()..");
if (Verbose)
TPRINTF(TRACE_VERBOSE, "InitPostgres");
InitPostgres(DBName);
#ifdef MULTIBYTE
/* set default client encoding */
if (!Quiet)
if (Verbose)
{
puts("\treset_client_encoding()..");
}
reset_client_encoding();
if (!Quiet)
if (Verbose)
{
puts("\treset_client_encoding() done.");
}
@ -1366,7 +1435,15 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
* ----------------
*/
pqsignal(SIGINT, QueryCancelHandler);
pqsignal(SIGHUP, read_pg_options); /* upate pg_options from file */
pqsignal(SIGINT, QueryCancelHandler); /* cancel current query */
pqsignal(SIGQUIT, handle_warn); /* handle error */
pqsignal(SIGTERM, die);
pqsignal(SIGPIPE, die);
pqsignal(SIGUSR1, quickdie);
pqsignal(SIGUSR2, Async_NotifyHandler); /* flush also sinval cache */
pqsignal(SIGCHLD, SIG_IGN); /* ignored, sent by LockOwners */
pqsignal(SIGFPE, FloatExceptionHandler);
if (whereToSendOutput == Remote &&
PG_PROTOCOL_MAJOR(FrontendProtocol) >= 2)
@ -1384,21 +1461,19 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
* so that the slaves signal the master to abort the transaction
* rather than calling AbortCurrentTransaction() themselves.
*
* Note: elog(ERROR) causes a kill(getpid(), SIGHUP) to occur sending
* us back here.
* Note: elog(ERROR) causes a kill(getpid(),SIGQUIT) to occur
* sending us back here.
* ----------------
*/
pqsignal(SIGHUP, handle_warn);
if (sigsetjmp(Warn_restart, 1) != 0)
{
InError = true;
time(&tim);
if (!Quiet)
printf("\tAbortCurrentTransaction() at %s\n", ctime(&tim));
if (Verbose)
TPRINTF(TRACE_VERBOSE, "AbortCurrentTransaction");
MemSet(parser_input, 0, MAX_PARSE_BUFFER);
@ -1415,7 +1490,7 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
if (!IsUnderPostmaster)
{
puts("\nPOSTGRES backend interactive interface");
puts("$Revision: 1.85 $ $Date: 1998/08/25 21:04:38 $");
puts("$Revision: 1.86 $ $Date: 1998/08/25 21:34:04 $");
}
/* ----------------
@ -1457,15 +1532,14 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
IsEmptyQuery = false;
/* start an xact for this function invocation */
if (!Quiet)
if (Verbose)
{
time(&tim);
printf("\tStartTransactionCommand() at %s\n", ctime(&tim));
TPRINTF(TRACE_VERBOSE, "StartTransactionCommand");
}
StartTransactionCommand();
HandleFunctionRequest();
*ps_status = "idle";
PS_SET_STATUS("idle");
break;
/* ----------------
@ -1495,16 +1569,15 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
ResetUsage();
/* start an xact for this query */
if (!Quiet)
if (Verbose)
{
time(&tim);
printf("\tStartTransactionCommand() at %s\n", ctime(&tim));
TPRINTF(TRACE_VERBOSE, "StartTransactionCommand");
}
StartTransactionCommand();
pg_exec_query(parser_input);
*ps_status = "idle";
PS_SET_STATUS("idle");
if (ShowStats)
ShowUsage();
@ -1533,12 +1606,13 @@ PostgresMain(int argc, char *argv[], int real_argc, char *real_argv[])
*/
if (!IsEmptyQuery)
{
if (!Quiet)
if (Verbose)
{
time(&tim);
printf("\tCommitTransactionCommand() at %s\n", ctime(&tim));
TPRINTF(TRACE_VERBOSE, "CommitTransactionCommand");
}
PS_SET_STATUS("commit");
CommitTransactionCommand();
PS_SET_STATUS("idle");
}
else