/* Copyright (C) 2006-2008 MySQL AB
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; version 2 of the License .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
/*
TODO : use pthread_join instead of wait_for_thread_count_to_be_zero , like in
my_atomic - t . c ( see BUG # 22320 ) .
*/
#include <tap.h>
#include <my_sys.h>
#include <m_string.h>
#include "test_file.h"
#include <tap.h>
#define PCACHE_SIZE (TEST_PAGE_SIZE*1024 *8 )
#ifndef DBUG_OFF
static const char * default_dbug_option;
#endif
static const char *base_file1_name= "page_cache_test_file_1" ;
static char file1_name[FN_REFLEN];
static PAGECACHE_FILE file1;
static pthread_cond_t COND_thread_count;
static pthread_mutex_t LOCK_thread_count;
static uint thread_count;
static PAGECACHE pagecache;
#ifdef TEST_HIGH_CONCURENCY
static uint number_of_readers= 10 ;
static uint number_of_writers= 20 ;
static uint number_of_tests= 30000 ;
static uint record_length_limit= TEST_PAGE_SIZE/200 ;
static uint number_of_pages= 20 ;
static uint flush_divider= 1000 ;
#else /*TEST_HIGH_CONCURENCY*/
#ifdef TEST_READERS
static uint number_of_readers= 10 ;
static uint number_of_writers= 1 ;
static uint number_of_tests= 30000 ;
static uint record_length_limit= TEST_PAGE_SIZE/200 ;
static uint number_of_pages= 20 ;
static uint flush_divider= 1000 ;
#undef SKIP_BIG_TESTS
#define SKIP_BIG_TESTS(X) /* no-op */
#else /*TEST_READERS*/
#ifdef TEST_WRITERS
static uint number_of_readers= 0 ;
static uint number_of_writers= 10 ;
static uint number_of_tests= 30000 ;
static uint record_length_limit= TEST_PAGE_SIZE/200 ;
static uint number_of_pages= 20 ;
static uint flush_divider= 1000 ;
#undef SKIP_BIG_TESTS
#define SKIP_BIG_TESTS(X) /* no-op */
#else /*TEST_WRITERS*/
static uint number_of_readers= 10 ;
static uint number_of_writers= 10 ;
static uint number_of_tests= 50000 ;
static uint record_length_limit= TEST_PAGE_SIZE/200 ;
static uint number_of_pages= 20000 ;
static uint flush_divider= 1000 ;
#endif /*TEST_WRITERS*/
#endif /*TEST_READERS*/
#endif /*TEST_HIGH_CONCURENCY*/
/*
Get pseudo - random length of the field in ( 0 ; limit )
SYNOPSYS
get_len ( )
limit limit for generated value
RETURN
length where length > = 0 & length < limit
*/
static uint get_len(uint limit)
{
return (uint)((ulonglong)rand()*(limit-1 )/RAND_MAX);
}
/*
Check page ' s consistency : layout is
4 bytes : number ' num ' of records in this page , then num occurences of
{ 4 bytes : record ' s length ' len ' ; then 4 bytes unchecked ( ' tag ' ) then
' len ' bytes each equal to the record ' s sequential number in this page ,
modulo 256 } , then zeroes .
*/
uint check_page(uchar *buff, ulong offset, int page_locked, int page_no,
int tag)
{
uint end= sizeof (uint);
uint num= uint4korr(buff);
uint i;
DBUG_ENTER("check_page" );
for (i= 0 ; i < num; i++)
{
uint len= uint4korr(buff + end);
uint j;
end+= 4 + 4 ;
if (len + end > TEST_PAGE_SIZE)
{
diag("incorrect field header #%u by offset %lu\n" , i, offset + end);
goto err;
}
for (j= 0 ; j < len; j++)
{
if (buff[end + j] != (uchar)((i+1 ) % 256 ))
{
diag("incorrect %lu byte\n" , offset + end + j);
goto err;
}
}
end+= len;
}
for (i= end; i < TEST_PAGE_SIZE; i++)
{
if (buff[i] != 0 )
{
int h;
DBUG_PRINT("err" ,
("byte %lu (%lu + %u), page %u (%s, end: %u, recs: %u, tag: %d) should be 0\n" ,
offset + i, offset, i, page_no,
(page_locked ? "locked" : "unlocked" ),
end, num, tag));
diag("byte %lu (%lu + %u), page %u (%s, end: %u, recs: %u, tag: %d) should be 0\n" ,
offset + i, offset, i, page_no,
(page_locked ? "locked" : "unlocked" ),
end, num, tag);
h= my_open("wrong_page" , O_CREAT | O_TRUNC | O_RDWR, MYF(0 ));
my_pwrite(h, (uchar*) buff, TEST_PAGE_SIZE, 0 , MYF(0 ));
my_close(h, MYF(0 ));
goto err;
}
}
DBUG_RETURN(end);
err:
DBUG_PRINT("err" , ("try to flush" ));
if (page_locked)
{
pagecache_delete(&pagecache, &file1, page_no,
PAGECACHE_LOCK_LEFT_WRITELOCKED, 1 );
}
else
{
flush_pagecache_blocks(&pagecache, &file1, FLUSH_RELEASE);
}
exit (1 );
}
void put_rec(uchar *buff, uint end, uint len, uint tag)
{
uint i;
uint num;
num= uint4korr(buff);
if (!len)
len= 1 ;
if (end + 4 *2 + len > TEST_PAGE_SIZE)
return ;
int4store(buff + end, len);
end+= 4 ;
int4store(buff + end, tag);
end+= 4 ;
num++;
int4store(buff, num);
for (i= end; i < (len + end); i++)
{
buff[i]= (uchar) num % 256 ;
}
}
/*
Recreate and reopen a file for test
SYNOPSIS
reset_file ( )
file File to reset
file_name Path ( and name ) of file which should be reset
*/
void reset_file(PAGECACHE_FILE file, char *file_name)
{
flush_pagecache_blocks(&pagecache, &file1, FLUSH_RELEASE);
if (my_close(file1.file, MYF(0 )) != 0 )
{
diag("Got error during %s closing from close() (errno: %d)\n" ,
file_name, errno);
exit (1 );
}
my_delete(file_name, MYF(0 ));
if ((file.file= my_open(file_name,
O_CREAT | O_TRUNC | O_RDWR, MYF(0 ))) == -1 )
{
diag("Got error during %s creation from open() (errno: %d)\n" ,
file_name, errno);
exit (1 );
}
}
void reader(int num)
{
unsigned char *buffr= malloc(TEST_PAGE_SIZE);
uint i;
for (i= 0 ; i < number_of_tests; i++)
{
uint page= get_len(number_of_pages);
pagecache_read(&pagecache, &file1, page, 3 , buffr,
PAGECACHE_PLAIN_PAGE,
PAGECACHE_LOCK_LEFT_UNLOCKED,
0 );
check_page(buffr, page * TEST_PAGE_SIZE, 0 , page, -num);
}
free(buffr);
}
void writer(int num)
{
unsigned char *buffr= malloc(TEST_PAGE_SIZE);
uint i;
for (i= 0 ; i < number_of_tests; i++)
{
uint end;
uint page= get_len(number_of_pages);
pagecache_read(&pagecache, &file1, page, 3 , buffr,
PAGECACHE_PLAIN_PAGE,
PAGECACHE_LOCK_WRITE,
0 );
end= check_page(buffr, page * TEST_PAGE_SIZE, 1 , page, num);
put_rec(buffr, end, get_len(record_length_limit), num);
pagecache_write(&pagecache, &file1, page, 3 , buffr,
PAGECACHE_PLAIN_PAGE,
PAGECACHE_LOCK_WRITE_UNLOCK,
PAGECACHE_UNPIN,
PAGECACHE_WRITE_DELAY,
0 , LSN_IMPOSSIBLE);
if (i % flush_divider == 0 )
flush_pagecache_blocks(&pagecache, &file1, FLUSH_FORCE_WRITE);
}
free(buffr);
}
static void *test_thread_reader(void *arg)
{
int param=*((int *) arg);
my_thread_init();
{
DBUG_ENTER("test_reader" );
DBUG_PRINT("enter" , ("param: %d" , param));
reader(param);
DBUG_PRINT("info" , ("Thread %s ended" , my_thread_name()));
pthread_mutex_lock(&LOCK_thread_count);
ok(1 , "reader%d: done" , param);
thread_count--;
pthread_cond_signal(&COND_thread_count); /* Tell main we are ready */
pthread_mutex_unlock(&LOCK_thread_count);
free((uchar*) arg);
my_thread_end();
}
return 0 ;
}
static void *test_thread_writer(void *arg)
{
int param=*((int *) arg);
my_thread_init();
{
DBUG_ENTER("test_writer" );
DBUG_PRINT("enter" , ("param: %d" , param));
writer(param);
DBUG_PRINT("info" , ("Thread %s ended" , my_thread_name()));
pthread_mutex_lock(&LOCK_thread_count);
ok(1 , "writer%d: done" , param);
thread_count--;
pthread_cond_signal(&COND_thread_count); /* Tell main we are ready */
pthread_mutex_unlock(&LOCK_thread_count);
free((uchar*) arg);
my_thread_end();
}
return 0 ;
}
static char *create_tmpdir(const char *progname)
{
static char test_dirname[FN_REFLEN];
char tmp_name[FN_REFLEN];
size_t length;
/* Create a temporary directory of name TMP-'executable', but without the -t extension */
fn_format(tmp_name, progname, "" , "" , MY_REPLACE_DIR | MY_REPLACE_EXT);
length= strlen(tmp_name);
if (length > 2 && tmp_name[length-2 ] == '-' && tmp_name[length-1 ] == 't' )
tmp_name[length-2 ]= 0 ;
strxmov(test_dirname, "TMP-" , tmp_name, NullS);
/*
Don ' t give an error if we can ' t create dir , as it may already exist from a previously aborted
run
*/
(void ) my_mkdir(test_dirname, 0777 , MYF(0 ));
return test_dirname;
}
int main(int argc __attribute__((unused)),
char **argv __attribute__((unused)))
{
pthread_t tid;
pthread_attr_t thr_attr;
int *param, error;
size_t pagen;
MY_INIT(argv[0 ]);
#ifndef DBUG_OFF
#if defined (_WIN32)
default_dbug_option= "d:t:i:O,\\test_pagecache_consist.trace" ;
#else
default_dbug_option= "d:t:i:o,/tmp/test_pagecache_consist.trace" ;
#endif
if (argc > 1 )
{
DBUG_SET(default_dbug_option);
DBUG_SET_INITIAL(default_dbug_option);
}
#endif
{
DBUG_ENTER("main" );
DBUG_PRINT("info" , ("Main thread: %s\n" , my_thread_name()));
plan(number_of_writers + number_of_readers);
SKIP_BIG_TESTS(number_of_writers + number_of_readers)
{
char *test_dirname= create_tmpdir(argv[0 ]);
fn_format(file1_name, base_file1_name, test_dirname, "" , MYF(0 ));
if ((file1.file= my_open(file1_name,
O_CREAT | O_TRUNC | O_RDWR, MYF(0 ))) == -1 )
{
diag( "Got error during file1 creation from open() (errno: %d)\n" ,
errno);
exit (1 );
}
pagecache_file_set_null_hooks(&file1);
DBUG_PRINT("info" , ("file1: %d" , file1.file));
if (my_chmod(file1_name, 0777 , MYF(MY_WME)))
exit (1 );
my_pwrite(file1.file, (const uchar *)"test file" , 9 , 0 , MYF(0 ));
if ((error= pthread_cond_init(&COND_thread_count, NULL)))
{
diag( "COND_thread_count: %d from pthread_cond_init (errno: %d)\n" ,
error, errno);
exit (1 );
}
if ((error= pthread_mutex_init(&LOCK_thread_count, MY_MUTEX_INIT_FAST)))
{
diag( "LOCK_thread_count: %d from pthread_cond_init (errno: %d)\n" ,
error, errno);
exit (1 );
}
if ((error= pthread_attr_init(&thr_attr)))
{
diag("Got error: %d from pthread_attr_init (errno: %d)\n" ,
error,errno);
exit (1 );
}
if ((error= pthread_attr_setdetachstate(&thr_attr, PTHREAD_CREATE_DETACHED)))
{
diag(
"Got error: %d from pthread_attr_setdetachstate (errno: %d)\n" ,
error,errno);
exit (1 );
}
if ((pagen= init_pagecache(&pagecache, PCACHE_SIZE, 0 , 0 ,
TEST_PAGE_SIZE, 0 , 0 )) == 0 )
{
diag("Got error: init_pagecache() (errno: %d)\n" ,
errno);
exit (1 );
}
DBUG_PRINT("info" , ("Page cache %zd pages" , pagen));
{
unsigned char *buffr= malloc(TEST_PAGE_SIZE);
uint i;
memset(buffr, '\0' , TEST_PAGE_SIZE);
for (i= 0 ; i < number_of_pages; i++)
{
pagecache_write(&pagecache, &file1, i, 3 , buffr,
PAGECACHE_PLAIN_PAGE,
PAGECACHE_LOCK_LEFT_UNLOCKED,
PAGECACHE_PIN_LEFT_UNPINNED,
PAGECACHE_WRITE_DELAY,
0 , LSN_IMPOSSIBLE);
}
flush_pagecache_blocks(&pagecache, &file1, FLUSH_FORCE_WRITE);
free(buffr);
}
pthread_mutex_lock(&LOCK_thread_count);
while (number_of_readers != 0 || number_of_writers != 0 )
{
if (number_of_readers != 0 )
{
param=(int *) malloc(sizeof (int ));
*param= number_of_readers;
if ((error= pthread_create(&tid, &thr_attr, test_thread_reader,
(void *) param)))
{
diag("Got error: %d from pthread_create (errno: %d)\n" ,
error,errno);
exit (1 );
}
thread_count++;
number_of_readers--;
}
if (number_of_writers != 0 )
{
param=(int *) malloc(sizeof (int ));
*param= number_of_writers;
if ((error= pthread_create(&tid, &thr_attr, test_thread_writer,
(void *) param)))
{
diag("Got error: %d from pthread_create (errno: %d)\n" ,
error,errno);
exit (1 );
}
thread_count++;
number_of_writers--;
}
}
DBUG_PRINT("info" , ("Thread started" ));
pthread_mutex_unlock(&LOCK_thread_count);
pthread_attr_destroy(&thr_attr);
/* wait finishing */
pthread_mutex_lock(&LOCK_thread_count);
while (thread_count)
{
if ((error= pthread_cond_wait(&COND_thread_count,&LOCK_thread_count)))
diag("COND_thread_count: %d from pthread_cond_wait\n" ,error);
}
pthread_mutex_unlock(&LOCK_thread_count);
DBUG_PRINT("info" , ("thread ended" ));
flush_pagecache_blocks(&pagecache, &file1, FLUSH_IGNORE_CHANGED);
end_pagecache(&pagecache, 1 );
DBUG_PRINT("info" , ("Page cache ended" ));
if (my_close(file1.file, MYF(0 )) != 0 )
{
diag( "Got error during file1 closing from close() (errno: %d)\n" ,
errno);
exit (1 );
}
my_delete(file1_name, MYF(0 ));
DBUG_PRINT("info" , ("file1 (%d) closed" , file1.file));
DBUG_PRINT("info" , ("Program end" ));
rmdir(test_dirname);
} /* SKIP_BIG_TESTS */
my_end(0 );
return exit_status();
}
}
#include "../ma_check_standalone.h"
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