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-rw-r--r--storage/maria/unittest/ma_pagecache_rwconsist2.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/storage/maria/unittest/ma_pagecache_rwconsist2.c b/storage/maria/unittest/ma_pagecache_rwconsist2.c
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+/* Copyright (C) 2006-2008 MySQL AB, 2008 Sun Microsystems, Inc.
+
+ 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 */
+
+
+/**
+ @file this unit tests consistence of long block writing under write lock
+ and simultaneous reading of this block with read request without read lock
+ requirement.
+*/
+
+/*
+ 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
+
+
+#define SLEEP my_sleep(5)
+
+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= 0;
+static PAGECACHE pagecache;
+
+static uint number_of_readers= 5;
+static uint number_of_writers= 5;
+static uint number_of_read_tests= 20000;
+static uint number_of_write_tests= 1000;
+static uint report_divisor= 50;
+
+/**
+ @brief Checks page consistency
+
+ @param buff pointer to the page content
+ @param task task ID
+*/
+void check_page(uchar *buff, int task)
+{
+ uint i;
+ DBUG_ENTER("check_page");
+
+ for (i= 1; i < TEST_PAGE_SIZE; i++)
+ {
+ if (buff[0] != buff[i])
+ goto err;
+ }
+ DBUG_VOID_RETURN;
+err:
+ diag("Task %d char #%u '%u' != '%u'", task, i, (uint) buff[0],
+ (uint) buff[i]);
+ DBUG_PRINT("err", ("try to flush"));
+ exit(1);
+}
+
+
+
+void reader(int num)
+{
+ unsigned char buff[TEST_PAGE_SIZE];
+ uint i;
+
+ for (i= 0; i < number_of_read_tests; i++)
+ {
+ if (i % report_divisor == 0)
+ diag("Reader %d - %u", num, i);
+ pagecache_read(&pagecache, &file1, 0, 3, buff,
+ PAGECACHE_PLAIN_PAGE,
+ PAGECACHE_LOCK_LEFT_UNLOCKED,
+ NULL);
+ check_page(buff, num);
+ }
+}
+
+
+void writer(int num)
+{
+ uint i;
+ uchar *buff;
+ PAGECACHE_BLOCK_LINK *link;
+
+ for (i= 0; i < number_of_write_tests; i++)
+ {
+ uchar c= (uchar) rand() % 256;
+
+ if (i % report_divisor == 0)
+ diag("Writer %d - %u", num, i);
+ buff= pagecache_read(&pagecache, &file1, 0, 3, NULL,
+ PAGECACHE_PLAIN_PAGE,
+ PAGECACHE_LOCK_WRITE,
+ &link);
+
+ check_page(buff, num);
+ bfill(buff, TEST_PAGE_SIZE / 2, c);
+ SLEEP;
+ bfill(buff + TEST_PAGE_SIZE/2, TEST_PAGE_SIZE / 2, c);
+ check_page(buff, num);
+ pagecache_unlock_by_link(&pagecache, link,
+ PAGECACHE_LOCK_WRITE_UNLOCK,
+ PAGECACHE_UNPIN, 0, 0, 1, FALSE);
+ SLEEP;
+ }
+}
+
+
+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");
+
+ 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);
+ }
+
+#ifdef HAVE_THR_SETCONCURRENCY
+ thr_setconcurrency(2);
+#endif
+
+ 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);
+ memset(buffr, '\0', TEST_PAGE_SIZE);
+ pagecache_write(&pagecache, &file1, 0, 3, buffr,
+ PAGECACHE_PLAIN_PAGE,
+ PAGECACHE_LOCK_LEFT_UNLOCKED,
+ PAGECACHE_PIN_LEFT_UNPINNED,
+ PAGECACHE_WRITE_DELAY,
+ 0, LSN_IMPOSSIBLE);
+ }
+ 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 + number_of_writers;
+ 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 + number_of_readers;
+ 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"));
+
+ 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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