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os0thread.h, srv0srv.c:

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Increase max number of waiting threads to 10000 and put diagnostic prints if this value is exceeded
This commit is contained in:
heikki@hundin.mysql.fi
2002-07-16 13:59:24 +03:00
parent dfc866b30e
commit 80e14f5b51
2 changed files with 29 additions and 3 deletions
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6
innobase/include/os0thread.h
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@ -12,8 +12,10 @@ Created 9/8/1995 Heikki Tuuri
#include "univ.i" #include "univ.i"
/* Maximum number of threads which can be created in the program */ /* Maximum number of threads which can be created in the program;
#define OS_THREAD_MAX_N 1000 this is also the size of the wait slot array for MySQL threads which
can wait inside InnoDB */
#define OS_THREAD_MAX_N 10000
/* Possible fixed priorities for threads */ /* Possible fixed priorities for threads */
#define OS_THREAD_PRIORITY_NONE 100 #define OS_THREAD_PRIORITY_NONE 100

26
innobase/srv/srv0srv.c
View File

@ -2001,7 +2001,31 @@ srv_table_reserve_slot_for_mysql(void)
while (slot->in_use) { while (slot->in_use) {
i++; i++;
ut_a(i < OS_THREAD_MAX_N);
if (i >= OS_THREAD_MAX_N) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: There appear to be %lu MySQL threads currently waiting\n"
"InnoDB: inside InnoDB, which is the upper limit. Cannot continue operation.\n"
"InnoDB: We intentionally generate a seg fault to print a stack trace\n"
"InnoDB: on Linux. But first we print a list of waiting threads.\n", i);
for (i = 0; i < OS_THREAD_MAX_N; i++) {
slot = srv_mysql_table + i;
fprintf(stderr,
"Slot %lu: thread id %lu, type %lu, in use %lu, susp %lu, time %lu\n",
i, (ulint)(slot->id),
slot->type, slot->in_use,
slot->suspended,
(ulint)difftime(ut_time(), slot->suspend_time));
}
ut_a(0);
}
slot = srv_mysql_table + i; slot = srv_mysql_table + i;
} }