Commit 4d47802f authored by unknown's avatar unknown
Browse files

sync0arr.c, os0file.h: 

  Print always the count of pending pread() and pwrite() calls if there is a long semaphore wait


innobase/include/os0file.h:
  Print always the count of pending pread() and pwrite() calls if there is a long semaphore wait
innobase/sync/sync0arr.c:
  Print always the count of pending pread() and pwrite() calls if there is a long semaphore wait
parent 06b776f9

innobase/include/os0file.h

+3 −0
Original line number Diff line number Diff line
@@ -18,6 +18,9 @@ extern ibool os_do_not_call_flush_at_each_write; 
extern ibool	os_has_said_disk_full;

extern ibool	os_aio_print_debug;



extern ulint	os_file_n_pending_preads;

extern ulint	os_file_n_pending_pwrites;



#ifdef __WIN__



/* We define always WIN_ASYNC_IO, and check at run-time whether

innobase/sync/sync0arr.c

+11 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ Created 9/5/1995 Heikki Tuuri 
#include "sync0sync.h"

#include "sync0rw.h"

#include "os0sync.h"

#include "os0file.h"

#include "srv0srv.h"



/*
@@ -940,6 +941,16 @@ sync_array_print_long_waits(void) 
"InnoDB: ###### Starts InnoDB Monitor for 30 secs to print diagnostic info:\n");

        	old_val = srv_print_innodb_monitor;



		/* If some crucial semaphore is reserved, then also the InnoDB

		Monitor can hang, and we do not get diagnostics. Since in

		many cases an InnoDB hang is caused by a pwrite() or a pread()

		call hanging inside the operating system, let us print right

		now the values of pending calls of these. */



		fprintf(stderr,

"InnoDB: Pending preads %lu, pwrites %lu\n", (ulong)os_file_n_pending_preads,

				(ulong)os_file_n_pending_pwrites);



        	srv_print_innodb_monitor = TRUE;

		os_event_set(srv_lock_timeout_thread_event);