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authorunknown <monty@donna.mysql.com>2000-09-12 03:02:33 +0300
committerunknown <monty@donna.mysql.com>2000-09-12 03:02:33 +0300
commitfe4cccd6a43496395ec52e9043cd4350e5eac69d (patch)
tree051686baf31e5363765879f2437ada3abea6b71b /mysys/my_pread.c
parent1dc6a46936306fbccaf19275e6f9dc4acc1e48a1 (diff)
downloadmariadb-git-fe4cccd6a43496395ec52e9043cd4350e5eac69d.tar.gz
Update to new root alloc, OPTIMIZE TABLE and some other changes
Docs/manual.texi: Added chapter for binary log, updated the changelog, linux section, OPTIMIZE TABLE... client/mysqladmin.c: Fixed bug with pid-file handling. client/mysqldump.c: Version change configure.in: Version change include/Makefile.am: Fix for SCO to get sched.h removed. include/global.h: Increased MY_NFILE; Added thread_safe_increment include/my_sys.h: Better root_alloc include/mysql.h: Better root_alloc include/mysys_err.h: Fix for PREAD/PWRITE on windows libmysql/libmysql.c: Better root_alloc myisam/mi_locking.c: Fix for PREAD/PWRITE on windows myisam/mi_static.c: Fix for PREAD/PWRITE on windows mysys/default.c: Better root_alloc mysys/errors.c: Fix for PREAD/PWRITE on windows mysys/my_alloc.c: Better root_alloc mysys/my_create.c: Fix for PREAD/PWRITE on windows mysys/my_fopen.c: Fix for PREAD/PWRITE on windows mysys/my_open.c: Fix for PREAD/PWRITE on windows mysys/my_pread.c: Fix for PREAD/PWRITE on windows mysys/tree.c: Better root_alloc readline/bind.c: Removed compiler warning readline/isearch.c: Removed compiler warning scripts/safe_mysqld.sh: Allow use of MYSQL_UNIX_PORT and MYSQL_TCP_PORT sql-bench/crash-me.sh: Version change sql-bench/limits/mysql-3.23.cfg: Update to latest MySQL version sql/filesort.cc: Added more statistics sql/ha_berkeley.h: Fixed bug with ORDER BY sql/ha_myisam.cc: Added OPTIMIZE TABLE and cleaned up the repair code sql/ha_myisam.h: Added OPTIMIZE TABLE and cleaned up the repair code sql/handler.cc: Added OPTIMIZE TABLE and cleaned up the repair code sql/handler.h: Added OPTIMIZE TABLE and cleaned up the repair code sql/item_func.cc: Fixed comment sql/item_timefunc.cc: Fixed possible month bug sql/mini_client.cc: Use of new root_alloc sql/mysql_priv.h: Added OPTIMIZE TABLE and cleaned up the repair code sql/mysqld.cc: Added more statistics sql/opt_range.cc: Use of new root_alloc sql/slave.cc: Use of new root_alloc sql/sql_acl.cc: Use of new root_alloc sql/sql_class.cc: Use of new root_alloc sql/sql_parse.cc: Use of new root_alloc sql/sql_select.cc: Added more statistics sql/sql_table.cc: Added OPTIMIZE TABLE and cleaned up the repair code sql/sql_udf.cc: Use of new root_alloc sql/sql_yacc.yy: Fixed that OPTIMIZE TABLE can take many tables as arguments sql/table.cc: Use of new root_alloc sql/thr_malloc.cc: Use of new root_alloc support-files/mysql.server.sh: Removed usage of AWK
Diffstat (limited to 'mysys/my_pread.c')
-rw-r--r--mysys/my_pread.c55
1 files changed, 32 insertions, 23 deletions
diff --git a/mysys/my_pread.c b/mysys/my_pread.c
index 1190f2cc81b..74bb7783af5 100644
--- a/mysys/my_pread.c
+++ b/mysys/my_pread.c
@@ -28,6 +28,7 @@ uint my_pread(File Filedes, byte *Buffer, uint Count, my_off_t offset,
myf MyFlags)
{
uint readbytes;
+ int error;
DBUG_ENTER("my_pread");
DBUG_PRINT("my",("Fd: %d Seek: %lu Buffer: %lx Count: %u MyFlags: %d",
Filedes, (ulong) offset, Buffer, Count, MyFlags));
@@ -38,32 +39,35 @@ uint my_pread(File Filedes, byte *Buffer, uint Count, my_off_t offset,
errno=0; /* Linux doesn't reset this */
#endif
#ifndef HAVE_PREAD
+ pthread_mutex_lock(&my_file_info[Filedes].mutex);
readbytes= (uint) -1;
- if (lseek(Filedes, offset, MY_SEEK_SET) == -1L ||
- (readbytes = (uint) read(Filedes, Buffer, Count)) != Count)
+ error= (lseek(Filedes, offset, MY_SEEK_SET) == -1L ||
+ (readbytes = (uint) read(Filedes, Buffer, Count)) != Count);
+ pthread_mutex_unlock(&my_file_info[Filedes].mutex);
#else
- if ((readbytes = (uint) pread(Filedes, Buffer, Count, offset)) != Count)
+ error=((readbytes = (uint) pread(Filedes, Buffer, Count, offset)) != Count);
#endif
- {
- my_errno=errno;
- DBUG_PRINT("warning",("Read only %ld bytes off %ld from %d, errno: %d",
- readbytes,Count,Filedes,my_errno));
+ if (error)
+ {
+ my_errno=errno;
+ DBUG_PRINT("warning",("Read only %ld bytes off %ld from %d, errno: %d",
+ readbytes,Count,Filedes,my_errno));
#ifdef THREAD
- if (readbytes == 0 && errno == EINTR)
- continue; /* Interrupted */
+ if (readbytes == 0 && errno == EINTR)
+ continue; /* Interrupted */
#endif
- if (MyFlags & (MY_WME | MY_FAE | MY_FNABP))
- {
- if ((int) readbytes == -1)
- my_error(EE_READ, MYF(ME_BELL+ME_WAITTANG),
- my_filename(Filedes),my_errno);
- else if (MyFlags & (MY_NABP | MY_FNABP))
- my_error(EE_EOFERR, MYF(ME_BELL+ME_WAITTANG),
- my_filename(Filedes),my_errno);
- }
- if ((int) readbytes == -1 || (MyFlags & (MY_FNABP | MY_NABP)))
- DBUG_RETURN(MY_FILE_ERROR); /* Return with error */
+ if (MyFlags & (MY_WME | MY_FAE | MY_FNABP))
+ {
+ if ((int) readbytes == -1)
+ my_error(EE_READ, MYF(ME_BELL+ME_WAITTANG),
+ my_filename(Filedes),my_errno);
+ else if (MyFlags & (MY_NABP | MY_FNABP))
+ my_error(EE_EOFERR, MYF(ME_BELL+ME_WAITTANG),
+ my_filename(Filedes),my_errno);
}
+ if ((int) readbytes == -1 || (MyFlags & (MY_FNABP | MY_NABP)))
+ DBUG_RETURN(MY_FILE_ERROR); /* Return with error */
+ }
if (MyFlags & (MY_NABP | MY_FNABP))
DBUG_RETURN(0); /* Ok vid l{sning */
DBUG_RETURN(readbytes); /* purecov: inspected */
@@ -76,6 +80,7 @@ uint my_pread(File Filedes, byte *Buffer, uint Count, my_off_t offset,
uint my_pwrite(int Filedes, const byte *Buffer, uint Count, my_off_t offset,
myf MyFlags)
{
+ int error;
uint writenbytes,errors;
ulong written;
DBUG_ENTER("my_pwrite");
@@ -87,12 +92,16 @@ uint my_pwrite(int Filedes, const byte *Buffer, uint Count, my_off_t offset,
{
#ifndef HAVE_PREAD
writenbytes= (uint) -1;
- if (lseek(Filedes, offset, MY_SEEK_SET) != -1L &&
- (writenbytes = (uint) write(Filedes, Buffer, Count)) == Count)
+ pthread_mutex_lock(&my_file_info[Filedes].mutex);
+ error=(lseek(Filedes, offset, MY_SEEK_SET) != -1L &&
+ (writenbytes = (uint) write(Filedes, Buffer, Count)) == Count);
+ pthread_mutex_unlock(&my_file_info[Filedes].mutex);
+ if (error)
+ break;
#else
if ((writenbytes = (uint) pwrite(Filedes, Buffer, Count,offset)) == Count)
-#endif
break;
+#endif
if ((int) writenbytes != -1)
{ /* Safegueard */
written+=writenbytes;