Applying InnoDB Plugin 1.0.5 snapshot , part 8

Note : r5865 is skipped
       r5869 plug.in related changes are aslo skipped

Detailed revision comments:

r5865 | vasil | 2009-09-12 02:26:03 -0500 (Sat, 12 Sep 2009) | 10 lines
branches/zip:

Simplify the compile time checks by splittig them into 5 independent checks:

* Whether GCC atomics are available
* Whether pthread_t can be used by GCC atomics
* Whether Solaris libc atomics are available
* Whether pthread_t can be used by Solaris libs atomics
* Checking the size of pthread_t

r5866 | vasil | 2009-09-12 02:30:08 -0500 (Sat, 12 Sep 2009) | 5 lines
branches/zip:

Add the check for GCC atomics to ut0auxconf* (copied from plug.in) because
we no longer rely on MySQL's HAVE_GCC_ATOMIC_BUILTINS.

r5867 | vasil | 2009-09-12 02:43:45 -0500 (Sat, 12 Sep 2009) | 4 lines
branches/zip:

Update comment to reflect reality.

r5868 | vasil | 2009-09-12 03:01:17 -0500 (Sat, 12 Sep 2009) | 6 lines
branches/zip:

Move the check whether to include ut0auxconf.h before everything because
we are now even checking for GCC atomics, we relied on MySQL to define
this macro before.

r5869 | vasil | 2009-09-12 03:33:11 -0500 (Sat, 12 Sep 2009) | 15 lines
branches/zip:

Include ut0auxconf.h only if none of the macros it would define is defined.
The check when to include this header was outdated from the time when there
was only one macro involved.

Move the atomics checks that are in univ.i outside of
#if windows ... #else ... #endif
This simplifies the code and removes some duplicates like defining
HAVE_ATOMIC_BUILTINS if HAVE_WINDOWS_ATOMICS is defined in both branches.

Do not define the same macro HAVE_ATOMIC_PTHREAD_T for different events.
Instead define HAVE_IB_ATOMIC_PTHREAD_T_GCC and
HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS.

r5870 | vasil | 2009-09-12 04:13:44 -0500 (Sat, 12 Sep 2009) | 7 lines
branches/zip:

Define HAVE_ATOMIC_BUILTINS and INNODB_RW_LOCKS_USE_ATOMICS in os0sync.h
instead of in univ.i. The code expects os_*() macros to be present if
HAVE_ATOMIC_BUILTINS and INNODB_RW_LOCKS_USE_ATOMICS are defined. So define
them next to defining the os_*() macros.

r5871 | vasil | 2009-09-12 04:25:44 -0500 (Sat, 12 Sep 2009) | 6 lines
branches/zip:

Rename HAVE_SOLARIS_ATOMICS to HAVE_IB_SOLARIS_ATOMICS and 
IB_HAVE_PAUSE_INSTRUCTION to HAVE_IB_PAUSE_INSTRUCTION so they
all follow the same HAVE_IB_* convention.

r5872 | vasil | 2009-09-12 04:35:17 -0500 (Sat, 12 Sep 2009) | 5 lines
branches/zip:

Explicitly include os0sync.h to the places where HAVE_ATOMIC_BUILTINS and
INNODB_RW_LOCKS_USE_ATOMICS are used to avoid potential problems.

storage/innodb_plugin/ut/ut0auxconf_have_gcc_atomics.c

@@ -0,0 +1,122 @@
+/*****************************************************************************
+
+Copyright (c) 2009, Innobase Oy. All Rights Reserved.
+
+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., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+
+*****************************************************************************/
+
+/*****************************************************************************
+If this program compiles and returns 0, then GCC atomic funcions are available.
+
+Created September 12, 2009 Vasil Dimov
+*****************************************************************************/
+
+int
+main(int argc, char** argv)
+{
+	long	x;
+	long	y;
+	long	res;
+	char	c;
+
+	x = 10;
+	y = 123;
+	res = __sync_bool_compare_and_swap(&x, x, y);
+	if (!res || x != y) {
+		return(1);
+	}
+
+	x = 10;
+	y = 123;
+	res = __sync_bool_compare_and_swap(&x, x + 1, y);
+	if (res || x != 10) {
+		return(1);
+	}
+
+	x = 10;
+	y = 123;
+	res = __sync_add_and_fetch(&x, y);
+	if (res != 123 + 10 || x != 123 + 10) {
+		return(1);
+	}
+
+	c = 10;
+	res = __sync_lock_test_and_set(&c, 123);
+	if (res != 10 || c != 123) {
+		return(1);
+	}
+
+	return(0);
+}
+/*****************************************************************************
+
+Copyright (c) 2009, Innobase Oy. All Rights Reserved.
+
+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., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+
+*****************************************************************************/
+
+/*****************************************************************************
+If this program compiles and returns 0, then GCC atomic funcions are available.
+
+Created September 12, 2009 Vasil Dimov
+*****************************************************************************/
+
+int
+main(int argc, char** argv)
+{
+	long	x;
+	long	y;
+	long	res;
+	char	c;
+
+	x = 10;
+	y = 123;
+	res = __sync_bool_compare_and_swap(&x, x, y);
+	if (!res || x != y) {
+		return(1);
+	}
+
+	x = 10;
+	y = 123;
+	res = __sync_bool_compare_and_swap(&x, x + 1, y);
+	if (res || x != 10) {
+		return(1);
+	}
+
+	x = 10;
+	y = 123;
+	res = __sync_add_and_fetch(&x, y);
+	if (res != 123 + 10 || x != 123 + 10) {
+		return(1);
+	}
+
+	c = 10;
+	res = __sync_lock_test_and_set(&c, 123);
+	if (res != 10 || c != 123) {
+		return(1);
+	}
+
+	return(0);
+}