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Merge hundin.mysql.fi:/home/marko/mysql-4.1

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into  hundin.mysql.fi:/home/marko/mysql-5.0
This commit is contained in:
marko@hundin.mysql.fi
2005-07-26 14:43:48 +03:00
parent a009ec4a9e a89939c8e7
commit 5dd8eeef3a
3 changed files with 18 additions and 1 deletions
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2
innobase/include/os0file.h
View File

@@ -19,7 +19,9 @@ Created 10/21/1995 Heikki Tuuri
typedef struct fil_node_struct fil_node_t;
#ifdef UNIV_DO_FLUSH
extern ibool os_do_not_call_flush_at_each_write;
#endif /* UNIV_DO_FLUSH */
extern ibool os_has_said_disk_full;
extern ibool os_aio_print_debug;

14
innobase/os/os0file.c
View File

@@ -40,9 +40,13 @@ ulint os_innodb_umask = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
ulint os_innodb_umask = 0;
#endif
#ifdef UNIV_DO_FLUSH
/* If the following is set to TRUE, we do not call os_file_flush in every
os_file_write. We can set this TRUE when the doublewrite buffer is used. */
ibool os_do_not_call_flush_at_each_write = FALSE;
#else
/* We do not call os_file_flush in every os_file_write. */
#endif /* UNIV_DO_FLUSH */
/* We use these mutexes to protect lseek + file i/o operation, if the
OS does not provide an atomic pread or pwrite, or similar */
@@ -1985,6 +1989,7 @@ os_file_pwrite(
os_file_n_pending_pwrites--;
os_mutex_exit(os_file_count_mutex);
# ifdef UNIV_DO_FLUSH
if (srv_unix_file_flush_method != SRV_UNIX_LITTLESYNC
&& srv_unix_file_flush_method != SRV_UNIX_NOSYNC
&& !os_do_not_call_flush_at_each_write) {
@@ -1995,6 +2000,7 @@ os_file_pwrite(
ut_a(TRUE == os_file_flush(file));
}
# endif /* UNIV_DO_FLUSH */
return(ret);
#else
@@ -2017,6 +2023,7 @@ os_file_pwrite(
ret = write(file, buf, (ssize_t)n);
# ifdef UNIV_DO_FLUSH
if (srv_unix_file_flush_method != SRV_UNIX_LITTLESYNC
&& srv_unix_file_flush_method != SRV_UNIX_NOSYNC
&& !os_do_not_call_flush_at_each_write) {
@@ -2027,6 +2034,7 @@ os_file_pwrite(
ut_a(TRUE == os_file_flush(file));
}
# endif /* UNIV_DO_FLUSH */
os_mutex_exit(os_file_seek_mutexes[i]);
@@ -2313,9 +2321,11 @@ retry:
/* Always do fsync to reduce the probability that when the OS crashes,
a database page is only partially physically written to disk. */
# ifdef UNIV_DO_FLUSH
if (!os_do_not_call_flush_at_each_write) {
ut_a(TRUE == os_file_flush(file));
}
# endif /* UNIV_DO_FLUSH */
os_mutex_exit(os_file_seek_mutexes[i]);
@@ -3533,10 +3543,12 @@ os_aio_windows_handle(
if (ret && len == slot->len) {
ret_val = TRUE;
# ifdef UNIV_DO_FLUSH
if (slot->type == OS_FILE_WRITE
&& !os_do_not_call_flush_at_each_write) {
ut_a(TRUE == os_file_flush(slot->file));
}
# endif /* UNIV_DO_FLUSH */
} else {
os_file_handle_error(slot->name, "Windows aio");
@@ -3617,10 +3629,12 @@ os_aio_posix_handle(
*message1 = slot->message1;
*message2 = slot->message2;
# ifdef UNIV_DO_FLUSH
if (slot->type == OS_FILE_WRITE
&& !os_do_not_call_flush_at_each_write) {
ut_a(TRUE == os_file_flush(slot->file));
}
# endif /* UNIV_DO_FLUSH */
os_mutex_exit(array->mutex);

3
innobase/trx/trx0sys.c
View File

@@ -97,8 +97,9 @@ trx_doublewrite_init(
/* Since we now start to use the doublewrite buffer, no need to call
fsync() after every write to a data file */
#ifdef UNIV_DO_FLUSH
os_do_not_call_flush_at_each_write = TRUE;
#endif /* UNIV_DO_FLUSH */
mutex_create(&(trx_doublewrite->mutex));
mutex_set_level(&(trx_doublewrite->mutex), SYNC_DOUBLEWRITE);