Skip to content

Instantly share code, notes, and snippets.

@nirbhayc

nirbhayc/pre_read_options.diff

Created July 19, 2017 12:43
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save nirbhayc/39610efdef03f46f3862db605bc4737e to your computer and use it in GitHub Desktop.
Save nirbhayc/39610efdef03f46f3862db605bc4737e to your computer and use it in GitHub Desktop.
Download ZIP
Raw
pre_read_options.diff
diff --git a/bbinc/tunables.h b/bbinc/tunables.h
index eb1d5d1..41263b2 100644
--- a/bbinc/tunables.h
+++ b/bbinc/tunables.h
@@ -59,6 +59,9 @@ typedef enum {
/* Set this flag if no argument has been specified. */
EMPTY = 1 << 8,
+
+ /* Set this flag if the tunable needs to be read early during startup. */
+ READEARLY = 1 << 9
} comdb2_tunable_flag;
/*
diff --git a/db/comdb2.c b/db/comdb2.c
index c75efdc..87eba32 100644
--- a/db/comdb2.c
+++ b/db/comdb2.c
@@ -1868,43 +1868,19 @@ static int pre_read_option(struct dbenv *dbenv, char *line,
add_legacy_default_options(dbenv);
}
- if (tokcmp(tok, ltok, "disable_direct_writes") == 0) {
- dbenv->enable_direct_writes = 0;
- } else if (tokcmp(tok, ltok, "morecolumns") == 0) {
- logmsg(LOGMSG_INFO, "allowing 1024 columns per table\n");
- gbl_morecolumns = 1;
- } else if (tokcmp(tok, ltok, "nullfkey") == 0) {
- gbl_nullfkey = 1;
- } else if (tokcmp(tok, ltok, "disallow_portmux_route") == 0) {
- gbl_pmux_route_enabled = 0;
- logmsg(LOGMSG_INFO, "Won't allow portmux route\n");
- } else if (tokcmp(tok, ltok, "allow_portmux_route") == 0) {
- gbl_pmux_route_enabled = 1;
- logmsg(LOGMSG_INFO, "Will allow portmux route\n");
- } else if (tokcmp(tok, ltok, "portmux_port") == 0) {
- tok = segtok(line, llen, &st, &ltok);
- int portmux_port = toknum(tok, ltok);
- logmsg(LOGMSG_WARN, "Using portmux port %d\n", portmux_port);
- set_portmux_port(portmux_port);
- } else if (tokcmp(tok, ltok, "portmux_bind_path") == 0) {
- char path[108];
- tok = segtok(line, llen, &st, &ltok);
- tokcpy(tok, ltok, path);
- if (set_portmux_bind_path(path)) {
- logmsg(LOGMSG_ERROR, "Failed in setting portmux bind path %s\n",
- path);
- } else {
- logmsg(LOGMSG_INFO, "Using portmux bind path %s\n", path);
- }
- } else if (tokcmp(line, ltok, "hostname") == 0) {
- tok = segtok(line, llen, &st, &ltok);
- if (ltok == 0) {
- logmsg(LOGMSG_INFO, "Expected hostname for 'hostname' directive.\n");
- return -1;
- }
- gbl_mynode = internn(tok, ltok);
- getmyaddr();
- } else if (tokcmp(line, ltok, "logmsg") == 0) {
+ /*
+ Handle global tunables which are supposed to be read early.
+
+ rc == -1 : non-registered tunable, fallthrough
+ rc == 0 : tunable updated successfully, return
+ rc == 1 : error while updating the tunable, return
+ */
+ rc = handle_lrl_tunable(tok, ltok, line + st, len - st, READEARLY);
+ if (rc != -1) {
+ return rc;
+ }
+
+ if (tokcmp(line, ltok, "logmsg") == 0) {
logmsg_process_message(line, llen);
}
return 0;
@@ -2158,7 +2134,7 @@ static int read_lrl_option(struct dbenv *dbenv, char *line, void *p, int len)
rc == 0 : tunable updated successfully, return
rc == 1 : error while updating the tunable, return
*/
- rc = handle_lrl_tunable(tok, ltok, line + st, len - st);
+ rc = handle_lrl_tunable(tok, ltok, line + st, len - st, 0);
if (rc != -1) {
return rc;
}
diff --git a/db/comdb2.h b/db/comdb2.h
index 1302464..2d7b3f6 100644
--- a/db/comdb2.h
+++ b/db/comdb2.h
@@ -3641,6 +3641,7 @@ extern int gbl_upd_null_cstr_return_conv_err;
/* Update the tunable at runtime. */
int handle_runtime_tunable(const char *name, const char *value);
/* Update the tunable read from lrl file. */
-int handle_lrl_tunable(char *name, int name_len, char *value, int value_len);
+int handle_lrl_tunable(char *name, int name_len, char *value, int value_len,
+ int flags);
#endif /* !INCLUDED_COMDB2_H */
diff --git a/db/db_tunables.c b/db/db_tunables.c
index e9959ff..a1f9ef3 100644
--- a/db/db_tunables.c
+++ b/db/db_tunables.c
@@ -1139,7 +1139,8 @@ int handle_runtime_tunable(const char *name, const char *value)
-1 Not a registered tunable
*/
-int handle_lrl_tunable(char *name, int name_len, char *value, int value_len)
+int handle_lrl_tunable(char *name, int name_len, char *value, int value_len,
+ int flags)
{
comdb2_tunable *t;
char buf[MAX_TUNABLE_VALUE_SIZE];
@@ -1159,6 +1160,10 @@ int handle_lrl_tunable(char *name, int name_len, char *value, int value_len)
return -1;
}
+ /* Only proceed if we were asked to process READEARLY tunables. */
+ if ((flags & READEARLY) && ((t->flags & READEARLY) == 0))
+ return 0;
+
/* Check if we have a value specified after the name. */
tok = segtok(value, value_len, &st, &ltok);
if (ltok == 0) {
diff --git a/db/db_tunables.h b/db/db_tunables.h
index 1453534..7bf96a2 100644
--- a/db/db_tunables.h
+++ b/db/db_tunables.h
@@ -36,8 +36,8 @@ REGISTER_TUNABLE("allow_lua_print", "Enable to allow stored "
TUNABLE_BOOLEAN, &gbl_allow_lua_print, READONLY | NOARG, NULL,
NULL, NULL, NULL);
REGISTER_TUNABLE("allow_portmux_route", NULL, TUNABLE_BOOLEAN,
- &gbl_pmux_route_enabled, READONLY | NOARG, NULL, NULL, NULL,
- NULL);
+ &gbl_pmux_route_enabled, READONLY | NOARG | READEARLY, NULL,
+ NULL, NULL, NULL);
REGISTER_TUNABLE("allow_user_schema",
"Enable to allow per-user schemas. (Default: off)",
TUNABLE_BOOLEAN, &gbl_allow_user_schema, READONLY | NOARG,
@@ -88,8 +88,8 @@ REGISTER_TUNABLE("broken_max_rec_sz", NULL, TUNABLE_INTEGER,
&gbl_broken_max_rec_sz, READONLY, NULL, NULL,
broken_max_rec_sz_update, NULL);
REGISTER_TUNABLE("broken_num_parser", NULL, TUNABLE_BOOLEAN,
- &gbl_broken_num_parser, READONLY | NOARG, NULL, NULL, NULL,
- NULL);
+ &gbl_broken_num_parser, READONLY | NOARG | READEARLY, NULL,
+ NULL, NULL, NULL);
REGISTER_TUNABLE("buffers_per_context", NULL, TUNABLE_INTEGER,
&gbl_buffers_per_context, READONLY | NOZERO, NULL, NULL, NULL,
NULL);
@@ -184,7 +184,8 @@ REGISTER_TUNABLE("disable_datetime_truncation",
NULL, NULL);
REGISTER_TUNABLE("disable_direct_writes", "Disables 'enable_direct_writes'",
TUNABLE_BOOLEAN, &db->enable_direct_writes,
- INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
+ INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
+ NULL);
REGISTER_TUNABLE("disable_good_sql_return_codes",
"Disables 'enable_good_sql_return_codes'", TUNABLE_BOOLEAN,
&gbl_enable_good_sql_return_codes,
@@ -262,7 +263,8 @@ REGISTER_TUNABLE("disable_upgrade_ahead", "Sets 'enable_upgrade_ahead' to 0.",
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("disallow_portmux_route", "Disables 'allow_portmux_route'",
TUNABLE_BOOLEAN, &gbl_pmux_route_enabled,
- INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
+ INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
+ NULL);
REGISTER_TUNABLE("dont_abort_on_in_use_rqid", "Disable 'abort_on_in_use_rqid'",
TUNABLE_BOOLEAN, &gbl_abort_on_clear_inuse_rqid,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
@@ -272,7 +274,8 @@ REGISTER_TUNABLE("dont_abort_on_missing_session",
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("dont_forbid_ulonglong", "Disables 'forbid_ulonglong'",
TUNABLE_BOOLEAN, &gbl_forbid_ulonglong,
- INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
+ INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
+ NULL);
REGISTER_TUNABLE("dont_init_with_inplace_updates",
"Disables 'init_with_inplace_updates'", TUNABLE_BOOLEAN,
&gbl_init_with_ipu, INVERSE_VALUE | READONLY | NOARG, NULL,
@@ -287,8 +290,9 @@ REGISTER_TUNABLE("dont_init_with_ondisk_header",
NULL, NULL, NULL);
REGISTER_TUNABLE("dont_optimize_repdb_truncate",
"Disable 'optimize_repdb_truncate'", TUNABLE_BOOLEAN,
- &gbl_optimize_truncate_repdb, INVERSE_VALUE | READONLY | NOARG,
- NULL, NULL, NULL, NULL);
+ &gbl_optimize_truncate_repdb,
+ INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
+ NULL);
REGISTER_TUNABLE("dont_prefix_foreign_keys", "Disables 'prefix_foreign_keys'",
TUNABLE_BOOLEAN, &gbl_fk_allow_prefix_keys,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
@@ -470,16 +474,16 @@ REGISTER_TUNABLE("fdbtrackhints", NULL, TUNABLE_INTEGER, &gbl_fdb_track_hints,
REGISTER_TUNABLE("fkrcode", NULL, TUNABLE_INTEGER, &gbl_fkrcode,
READONLY | INTERNAL, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("forbid_ulonglong", "Disallow u_longlong. (Default: on)",
- TUNABLE_BOOLEAN, &gbl_forbid_ulonglong, READONLY | NOARG, NULL,
- NULL, NULL, NULL);
+ TUNABLE_BOOLEAN, &gbl_forbid_ulonglong,
+ READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("force_highslot", NULL, TUNABLE_BOOLEAN, &gbl_force_highslot,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("foreign_db_allow_cross_class", NULL, TUNABLE_BOOLEAN,
- &gbl_fdb_allow_cross_classes, READONLY | NOARG, NULL, NULL,
- NULL, NULL);
+ &gbl_fdb_allow_cross_classes, READONLY | NOARG | READEARLY,
+ NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("foreign_db_resolve_local", NULL, TUNABLE_BOOLEAN,
- &gbl_fdb_resolve_local, READONLY | NOARG, NULL, NULL, NULL,
- NULL);
+ &gbl_fdb_resolve_local, READONLY | NOARG | READEARLY, NULL,
+ NULL, NULL, NULL);
REGISTER_TUNABLE("fullrecovery", "Attempt to run database "
"recovery from the beginning of "
"available logs. (Default : off)",
@@ -501,8 +505,8 @@ REGISTER_TUNABLE("heartbeat_send_time",
"Send heartbeats this often. (Default: 5secs)",
TUNABLE_INTEGER, &gbl_heartbeat_send, READONLY | NOZERO, NULL,
NULL, NULL, NULL);
-REGISTER_TUNABLE("hostname", NULL, TUNABLE_STRING, &gbl_mynode, READONLY, NULL,
- NULL, hostname_update, NULL);
+REGISTER_TUNABLE("hostname", NULL, TUNABLE_STRING, &gbl_mynode,
+ READONLY | READEARLY, NULL, NULL, hostname_update, NULL);
REGISTER_TUNABLE("incoherent_alarm_time", NULL, TUNABLE_INTEGER,
&gbl_incoherent_alarm_time, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("incoherent_msg_freq", NULL, TUNABLE_INTEGER,
@@ -569,14 +573,14 @@ REGISTER_TUNABLE("largepages", "Enables large pages. (Default: off)",
NULL, NULL);
REGISTER_TUNABLE("lclpooledbufs", NULL, TUNABLE_INTEGER, &gbl_lclpooled_buffers,
READONLY, NULL, NULL, NULL, NULL);
-REGISTER_TUNABLE("lk_hash", NULL, TUNABLE_INTEGER, &gbl_lk_hash, READONLY, NULL,
- lk_verify, NULL, NULL);
-REGISTER_TUNABLE("lk_part", NULL, TUNABLE_INTEGER, &gbl_lk_parts, READONLY,
- NULL, lk_verify, NULL, NULL);
-REGISTER_TUNABLE("lkr_hash", NULL, TUNABLE_INTEGER, &gbl_lkr_hash, READONLY,
- NULL, lk_verify, NULL, NULL);
-REGISTER_TUNABLE("lkr_part", NULL, TUNABLE_INTEGER, &gbl_lkr_parts, READONLY,
- NULL, lk_verify, NULL, NULL);
+REGISTER_TUNABLE("lk_hash", NULL, TUNABLE_INTEGER, &gbl_lk_hash,
+ READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
+REGISTER_TUNABLE("lk_part", NULL, TUNABLE_INTEGER, &gbl_lk_parts,
+ READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
+REGISTER_TUNABLE("lkr_hash", NULL, TUNABLE_INTEGER, &gbl_lkr_hash,
+ READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
+REGISTER_TUNABLE("lkr_part", NULL, TUNABLE_INTEGER, &gbl_lkr_parts,
+ READONLY | READEARLY, NULL, lk_verify, NULL, NULL);
REGISTER_TUNABLE("lock_conflict_trace",
"Dump count of lock conflicts every second. (Default: off)",
TUNABLE_BOOLEAN, &gbl_lock_conflict_trace, READONLY | NOARG,
@@ -682,7 +686,7 @@ REGISTER_TUNABLE("memstat_autoreport_freq",
TUNABLE_INTEGER, &gbl_memstat_freq, READONLY, NULL, NULL, NULL,
NULL);
REGISTER_TUNABLE("morecolumns", NULL, TUNABLE_INTEGER, &gbl_morecolumns,
- READONLY, NULL, NULL, NULL, NULL);
+ READONLY | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("move_deadlock_max_attempt", NULL, TUNABLE_INTEGER,
&gbl_move_deadlk_max_attempt, READONLY, NULL, NULL, NULL,
NULL);
@@ -775,7 +779,7 @@ REGISTER_TUNABLE("no_lock_conflict_trace", "Disables 'lock_conflict_trace'",
TUNABLE_BOOLEAN, &gbl_lock_conflict_trace,
INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("nonames", NULL, TUNABLE_BOOLEAN, &gbl_nonames,
- READONLY | NOARG, NULL, NULL, NULL, NULL);
+ READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("no_net_explicit_flush_trace",
"Disables 'net_explicit_flush_trace'", TUNABLE_BOOLEAN,
&explicit_flush_trace, INVERSE_VALUE | READONLY | NOARG, NULL,
@@ -830,7 +834,8 @@ REGISTER_TUNABLE("null_blob_fix", NULL, TUNABLE_BOOLEAN,
REGISTER_TUNABLE(
"nullfkey",
"Do not enforce foreign key constraints for null keys. (Default: off)",
- TUNABLE_BOOLEAN, &gbl_nullfkey, READONLY | NOARG, NULL, NULL, NULL, NULL);
+ TUNABLE_BOOLEAN, &gbl_nullfkey, READONLY | NOARG | READEARLY, NULL, NULL,
+ NULL, NULL);
/*
REGISTER_TUNABLE("nullsort", NULL, TUNABLE_ENUM,
&placeholder, READONLY, NULL, NULL, NULL, NULL);
@@ -851,7 +856,7 @@ REGISTER_TUNABLE("oldrangexlim", NULL, TUNABLE_BOOLEAN,
REGISTER_TUNABLE("optimize_repdb_truncate",
"Enables use of optimized repdb truncate code. (Default: on)",
TUNABLE_BOOLEAN, &gbl_optimize_truncate_repdb,
- READONLY | NOARG, NULL, NULL, NULL, NULL);
+ READONLY | NOARG | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osql_bkoff_netsend", NULL, TUNABLE_INTEGER,
&gbl_osql_bkoff_netsend, READONLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("osql_bkoff_netsend_lmt", NULL, TUNABLE_INTEGER,
@@ -919,9 +924,10 @@ REGISTER_TUNABLE("penaltyincpercent", NULL, TUNABLE_INTEGER,
REGISTER_TUNABLE("perfect_ckp", NULL, TUNABLE_INTEGER, &gbl_use_perfect_ckp,
READONLY | NOARG, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("portmux_bind_path", NULL, TUNABLE_STRING,
- &gbl_portmux_unix_socket, READONLY, NULL, NULL, NULL, NULL);
-REGISTER_TUNABLE("portmux_port", NULL, TUNABLE_INTEGER, &portmux_port, READONLY,
- NULL, NULL, NULL, NULL);
+ &gbl_portmux_unix_socket, READONLY | READEARLY, NULL, NULL,
+ NULL, NULL);
+REGISTER_TUNABLE("portmux_port", NULL, TUNABLE_INTEGER, &portmux_port,
+ READONLY | READEARLY, NULL, NULL, NULL, NULL);
REGISTER_TUNABLE("prefaulthelper_blockops", NULL, TUNABLE_INTEGER,
&gbl_prefaulthelper_blockops, READONLY, NULL, NULL, NULL,
NULL);
@@ -1156,7 +1162,8 @@ REGISTER_TUNABLE("use_llmeta", NULL, TUNABLE_INTEGER,
&gbl_use_llmeta, READONLY, NULL, NULL, NULL, NULL);
*/
REGISTER_TUNABLE("usenames", NULL, TUNABLE_BOOLEAN, &gbl_nonames,
- INVERSE_VALUE | READONLY | NOARG, NULL, NULL, NULL, NULL);
+ INVERSE_VALUE | READONLY | NOARG | READEARLY, NULL, NULL, NULL,
+ NULL);
REGISTER_TUNABLE("use_node_priority",
"Sets node priority for the db. (Default: off)",
TUNABLE_BOOLEAN, &gbl_use_node_pri, READONLY | NOARG, NULL,
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment