[PATCH] score: Rework global construction
Sebastian Huber
sebastian.huber at embedded-brains.de
Fri Oct 10 07:12:55 UTC 2014
Ensure that the global construction is performed in the context of the
first initialization thread. On SMP this was not guaranteed in the
previous implementation.
---
cpukit/posix/src/pthreadinitthreads.c | 17 +++-
cpukit/rtems/src/taskinitusers.c | 13 ++-
cpukit/score/Makefile.am | 1 +
cpukit/score/include/rtems/score/threadimpl.h | 10 +++
cpukit/score/src/threadglobalconstruction.c | 94 ++++++++++++++++++++++
cpukit/score/src/threadhandler.c | 84 +------------------
testsuites/psxtests/Makefile.am | 4 +
testsuites/psxtests/configure.ac | 9 ++-
testsuites/psxtests/psxglobalcon01/Makefile.am | 19 +++++
testsuites/psxtests/psxglobalcon01/init.cc | 58 +++++++++++++
.../psxtests/psxglobalcon01/psxglobalcon01.doc | 12 +++
.../psxtests/psxglobalcon01/psxglobalcon01.scn | 2 +
testsuites/psxtests/psxglobalcon02/Makefile.am | 19 +++++
testsuites/psxtests/psxglobalcon02/init.cc | 73 +++++++++++++++++
.../psxtests/psxglobalcon02/psxglobalcon02.doc | 12 +++
.../psxtests/psxglobalcon02/psxglobalcon02.scn | 2 +
16 files changed, 343 insertions(+), 86 deletions(-)
create mode 100644 cpukit/score/src/threadglobalconstruction.c
create mode 100644 testsuites/psxtests/psxglobalcon01/Makefile.am
create mode 100644 testsuites/psxtests/psxglobalcon01/init.cc
create mode 100644 testsuites/psxtests/psxglobalcon01/psxglobalcon01.doc
create mode 100644 testsuites/psxtests/psxglobalcon01/psxglobalcon01.scn
create mode 100644 testsuites/psxtests/psxglobalcon02/Makefile.am
create mode 100644 testsuites/psxtests/psxglobalcon02/init.cc
create mode 100644 testsuites/psxtests/psxglobalcon02/psxglobalcon02.doc
create mode 100644 testsuites/psxtests/psxglobalcon02/psxglobalcon02.scn
diff --git a/cpukit/posix/src/pthreadinitthreads.c b/cpukit/posix/src/pthreadinitthreads.c
index ad8906b..bc97aaf 100644
--- a/cpukit/posix/src/pthreadinitthreads.c
+++ b/cpukit/posix/src/pthreadinitthreads.c
@@ -34,6 +34,7 @@
#include <rtems/posix/priorityimpl.h>
#include <rtems/posix/config.h>
#include <rtems/posix/time.h>
+#include <rtems/rtems/config.h>
void _POSIX_Threads_Initialize_user_threads_body(void)
{
@@ -43,13 +44,18 @@ void _POSIX_Threads_Initialize_user_threads_body(void)
posix_initialization_threads_table *user_threads;
pthread_t thread_id;
pthread_attr_t attr;
+ bool register_global_construction;
+ void *(*thread_entry)(void *);
user_threads = Configuration_POSIX_API.User_initialization_threads_table;
maximum = Configuration_POSIX_API.number_of_initialization_threads;
- if ( !user_threads || maximum == 0 )
+ if ( !user_threads )
return;
+ register_global_construction =
+ Configuration_RTEMS_API.number_of_initialization_tasks == 0;
+
/*
* Be careful .. if the default attribute set changes, this may need to.
*
@@ -68,10 +74,17 @@ void _POSIX_Threads_Initialize_user_threads_body(void)
eno = pthread_attr_setstacksize(&attr, user_threads[ index ].stack_size);
_Assert( eno == 0 );
+ if ( register_global_construction ) {
+ register_global_construction = false;
+ thread_entry = (void *(*)(void *)) _Thread_Global_construction;
+ } else {
+ thread_entry = user_threads[ index ].thread_entry;
+ }
+
eno = pthread_create(
&thread_id,
&attr,
- user_threads[ index ].thread_entry,
+ thread_entry,
NULL
);
if ( eno )
diff --git a/cpukit/rtems/src/taskinitusers.c b/cpukit/rtems/src/taskinitusers.c
index 51fb474..c7bc4b3 100644
--- a/cpukit/rtems/src/taskinitusers.c
+++ b/cpukit/rtems/src/taskinitusers.c
@@ -48,6 +48,8 @@ void _RTEMS_tasks_Initialize_user_tasks_body( void )
rtems_id id;
rtems_status_code return_value;
rtems_initialization_tasks_table *user_tasks;
+ bool register_global_construction;
+ rtems_task_entry entry_point;
/*
* Move information into local variables
@@ -61,6 +63,8 @@ void _RTEMS_tasks_Initialize_user_tasks_body( void )
if ( !user_tasks )
return;
+ register_global_construction = true;
+
/*
* Now iterate over the initialization tasks and create/start them.
*/
@@ -76,9 +80,16 @@ void _RTEMS_tasks_Initialize_user_tasks_body( void )
if ( !rtems_is_status_successful( return_value ) )
_Terminate( INTERNAL_ERROR_RTEMS_API, true, return_value );
+ if ( register_global_construction ) {
+ register_global_construction = false;
+ entry_point = (rtems_task_entry) _Thread_Global_construction;
+ } else {
+ entry_point = user_tasks[ index ].entry_point;
+ }
+
return_value = rtems_task_start(
id,
- user_tasks[ index ].entry_point,
+ entry_point,
user_tasks[ index ].argument
);
if ( !rtems_is_status_successful( return_value ) )
diff --git a/cpukit/score/Makefile.am b/cpukit/score/Makefile.am
index 55e10e9..3e646a1 100644
--- a/cpukit/score/Makefile.am
+++ b/cpukit/score/Makefile.am
@@ -289,6 +289,7 @@ libscore_a_SOURCES += src/thread.c src/threadchangepriority.c \
src/threadstackallocate.c src/threadstackfree.c src/threadstart.c \
src/threadstartmultitasking.c src/iterateoverthreads.c \
src/threadblockingoperationcancel.c
+libscore_a_SOURCES += src/threadglobalconstruction.c
libscore_a_SOURCES += src/threadyield.c
if HAS_SMP
diff --git a/cpukit/score/include/rtems/score/threadimpl.h b/cpukit/score/include/rtems/score/threadimpl.h
index 9321c01..61b498a 100644
--- a/cpukit/score/include/rtems/score/threadimpl.h
+++ b/cpukit/score/include/rtems/score/threadimpl.h
@@ -305,6 +305,16 @@ void _Thread_Load_environment(
void _Thread_Handler( void );
/**
+ * @brief Executes the global constructors and then restarts itself as the
+ * first initialization thread.
+ *
+ * The first initialization thread is the first RTEMS initialization task or
+ * the first POSIX initialization thread in case no RTEMS initialization tasks
+ * are present.
+ */
+void *_Thread_Global_construction( void );
+
+/**
* @brief Ended the delay of a thread.
*
* This routine is invoked when a thread must be unblocked at the
diff --git a/cpukit/score/src/threadglobalconstruction.c b/cpukit/score/src/threadglobalconstruction.c
new file mode 100644
index 0000000..ff8af51
--- /dev/null
+++ b/cpukit/score/src/threadglobalconstruction.c
@@ -0,0 +1,94 @@
+/**
+ * @file
+ *
+ * @brief Thread Global Construction
+ *
+ * @ingroup ScoreThread
+ */
+
+/*
+ * COPYRIGHT (c) 1989-2012.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/score/threadimpl.h>
+#include <rtems/score/assert.h>
+#include <rtems/rtems/config.h>
+#include <rtems/posix/config.h>
+
+/*
+ * Conditional magic to determine what style of C++ constructor
+ * initialization this target and compiler version uses.
+ */
+#if defined(__USE_INIT_FINI__)
+ #if defined(__M32R__)
+ #define INIT_NAME __init
+ #elif defined(__ARM_EABI__)
+ #define INIT_NAME __libc_init_array
+ #else
+ #define INIT_NAME _init
+ #endif
+
+ extern void INIT_NAME(void);
+ #define EXECUTE_GLOBAL_CONSTRUCTORS
+#endif
+
+#if defined(__USE__MAIN__)
+ extern void __main(void);
+ #define INIT_NAME __main
+ #define EXECUTE_GLOBAL_CONSTRUCTORS
+#endif
+
+void *_Thread_Global_construction( void )
+{
+ Thread_Control *executing;
+ Thread_Entry entry_point;
+
+#if defined(EXECUTE_GLOBAL_CONSTRUCTORS)
+ /*
+ * _init could be a weak symbol and we SHOULD test it but it isn't
+ * in any configuration I know of and it generates a warning on every
+ * RTEMS target configuration. --joel (12 May 2007)
+ */
+ INIT_NAME();
+#endif
+
+#if defined(RTEMS_POSIX_API)
+ if ( Configuration_RTEMS_API.number_of_initialization_tasks > 0 ) {
+#endif
+ entry_point = (Thread_Entry)
+ Configuration_RTEMS_API.User_initialization_tasks_table[ 0 ].entry_point;
+#if defined(RTEMS_POSIX_API)
+ } else {
+ entry_point = (Thread_Entry)
+ Configuration_POSIX_API
+ .User_initialization_threads_table[ 0 ].thread_entry;
+ }
+#endif
+
+ _Thread_Disable_dispatch();
+
+ executing = _Thread_Executing;
+ executing->Start.entry_point = entry_point;
+
+ _Thread_Restart(
+ executing,
+ executing,
+ executing->Start.pointer_argument,
+ executing->Start.numeric_argument
+ );
+
+ _Thread_Enable_dispatch();
+
+ _Assert_Not_reached();
+
+ return NULL;
+}
diff --git a/cpukit/score/src/threadhandler.c b/cpukit/score/src/threadhandler.c
index 5f6623f..f8a9a62 100644
--- a/cpukit/score/src/threadhandler.c
+++ b/cpukit/score/src/threadhandler.c
@@ -24,76 +24,11 @@
#include <rtems/score/isrlevel.h>
#include <rtems/score/userextimpl.h>
-/*
- * Conditional magic to determine what style of C++ constructor
- * initialization this target and compiler version uses.
- */
-#if defined(__USE_INIT_FINI__)
- #if defined(__M32R__)
- #define INIT_NAME __init
- #elif defined(__ARM_EABI__)
- #define INIT_NAME __libc_init_array
- #else
- #define INIT_NAME _init
- #endif
-
- extern void INIT_NAME(void);
- #define EXECUTE_GLOBAL_CONSTRUCTORS
-#endif
-
-#if defined(__USE__MAIN__)
- extern void __main(void);
- #define INIT_NAME __main
- #define EXECUTE_GLOBAL_CONSTRUCTORS
-#endif
-
-#if defined(EXECUTE_GLOBAL_CONSTRUCTORS)
- static bool _Thread_Handler_is_constructor_execution_required(
- Thread_Control *executing
- )
- {
- static bool doneConstructors;
- bool doCons = false;
-
- #if defined(RTEMS_SMP)
- static SMP_lock_Control constructor_lock =
- SMP_LOCK_INITIALIZER("constructor");
-
- SMP_lock_Context lock_context;
-
- if ( !doneConstructors ) {
- _SMP_lock_Acquire( &constructor_lock, &lock_context );
- #endif
-
- #if defined(RTEMS_MULTIPROCESSING)
- doCons = !doneConstructors
- && _Objects_Get_API( executing->Object.id ) != OBJECTS_INTERNAL_API;
- if (doCons)
- doneConstructors = true;
- #else
- (void) executing;
- doCons = !doneConstructors;
- doneConstructors = true;
- #endif
-
- #if defined(RTEMS_SMP)
- _SMP_lock_Release( &constructor_lock, &lock_context );
- }
- #endif
-
- return doCons;
- }
-#endif
-
void _Thread_Handler( void )
{
- ISR_Level level;
- Thread_Control *executing;
- #if defined(EXECUTE_GLOBAL_CONSTRUCTORS)
- bool doCons;
- #endif
+ Thread_Control *executing = _Thread_Executing;
+ ISR_Level level;
- executing = _Thread_Executing;
/*
* Some CPUs need to tinker with the call frame or registers when the
@@ -111,10 +46,6 @@ void _Thread_Handler( void )
_ISR_Set_level( level );
#endif
- #if defined(EXECUTE_GLOBAL_CONSTRUCTORS)
- doCons = _Thread_Handler_is_constructor_execution_required( executing );
- #endif
-
/*
* Initialize the floating point context because we do not come
* through _Thread_Dispatch on our first invocation. So the normal
@@ -171,17 +102,6 @@ void _Thread_Handler( void )
_Thread_Enable_dispatch();
#endif
- #if defined(EXECUTE_GLOBAL_CONSTRUCTORS)
- /*
- * _init could be a weak symbol and we SHOULD test it but it isn't
- * in any configuration I know of and it generates a warning on every
- * RTEMS target configuration. --joel (12 May 2007)
- */
- if (doCons) /* && (volatile void *)_init) */ {
- INIT_NAME ();
- }
- #endif
-
/*
* RTEMS supports multiple APIs and each API can define a different
* thread/task prototype. The following code supports invoking the
diff --git a/testsuites/psxtests/Makefile.am b/testsuites/psxtests/Makefile.am
index d8eee14..e15d72f 100644
--- a/testsuites/psxtests/Makefile.am
+++ b/testsuites/psxtests/Makefile.am
@@ -15,6 +15,10 @@ _SUBDIRS += psxhdrs psx01 psx02 psx03 psx04 psx05 psx06 psx07 psx08 psx09 \
psxtime psxtimer01 psxtimer02 psxualarm psxusleep psxfatal01 psxfatal02 \
psxintrcritical01 psxstack01 psxstack02 \
psxeintr_join psxgetattrnp01
+if HAS_CPLUSPLUS
+_SUBDIRS += psxglobalcon01
+_SUBDIRS += psxglobalcon02
+endif
endif
## File IO tests
diff --git a/testsuites/psxtests/configure.ac b/testsuites/psxtests/configure.ac
index 26e4b60..23c7211 100644
--- a/testsuites/psxtests/configure.ac
+++ b/testsuites/psxtests/configure.ac
@@ -11,17 +11,22 @@ RTEMS_CANONICAL_TARGET_CPU
AM_INIT_AUTOMAKE([no-define foreign 1.12.2])
AM_MAINTAINER_MODE
+RTEMS_ENABLE_CXX
+
RTEMS_ENV_RTEMSBSP
RTEMS_PROJECT_ROOT
RTEMS_PROG_CC_FOR_TARGET
+RTEMS_PROG_CXX_FOR_TARGET
RTEMS_CANONICALIZE_TOOLS
RTEMS_CHECK_CUSTOM_BSP(RTEMS_BSP)
+RTEMS_CHECK_CXX(RTEMS_BSP)
-AM_CONDITIONAL([HAS_NETWORKING],[test "$HAS_NETWORKING" = "yes"])
+AM_CONDITIONAL([HAS_NETWORKING],[test x"$HAS_NETWORKING" = x"yes"])
+AM_CONDITIONAL([HAS_CPLUSPLUS],[test x"$HAS_CPLUSPLUS" = x"yes"])
RTEMS_CHECK_CPUOPTS([RTEMS_POSIX_API])
AM_CONDITIONAL(HAS_POSIX,test x"${rtems_cv_RTEMS_POSIX_API}" = x"yes")
@@ -145,6 +150,8 @@ psxfile02/Makefile
psxfilelock01/Makefile
psxgetattrnp01/Makefile
psxgetrusage01/Makefile
+psxglobalcon01/Makefile
+psxglobalcon02/Makefile
psxhdrs/Makefile
psxid01/Makefile
psximfs01/Makefile
diff --git a/testsuites/psxtests/psxglobalcon01/Makefile.am b/testsuites/psxtests/psxglobalcon01/Makefile.am
new file mode 100644
index 0000000..3b87ebe
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon01/Makefile.am
@@ -0,0 +1,19 @@
+rtems_tests_PROGRAMS = psxglobalcon01
+psxglobalcon01_SOURCES = init.cc
+
+dist_rtems_tests_DATA = psxglobalcon01.scn psxglobalcon01.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(psxglobalcon01_OBJECTS)
+LINK_LIBS = $(psxglobalcon01_LDLIBS)
+
+psxglobalcon01$(EXEEXT): $(psxglobalcon01_OBJECTS) $(psxglobalcon01_DEPENDENCIES)
+ @rm -f psxglobalcon01$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/psxtests/psxglobalcon01/init.cc b/testsuites/psxtests/psxglobalcon01/init.cc
new file mode 100644
index 0000000..f33efc3
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon01/init.cc
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include "tmacros.h"
+
+const char rtems_test_name[] = "PSXGLOBALCON 1";
+
+class A {
+ public:
+ A()
+ {
+ ++i;
+ }
+
+ static int i;
+};
+
+int A::i;
+
+static A a;
+
+static void *POSIX_Init(void *argument)
+{
+ TEST_BEGIN();
+
+ rtems_test_assert(a.i == 1);
+
+ TEST_END();
+ rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_MAXIMUM_POSIX_THREADS 1
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_POSIX_INIT_THREAD_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/psxtests/psxglobalcon01/psxglobalcon01.doc b/testsuites/psxtests/psxglobalcon01/psxglobalcon01.doc
new file mode 100644
index 0000000..7ed81da
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon01/psxglobalcon01.doc
@@ -0,0 +1,12 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: psxglobalcon01
+
+directives:
+
+ - _Thread_Global_construction()
+
+concepts:
+
+ - Ensure that the global construction is performed exactly once in case only
+ a POSIX initialization thread is present.
diff --git a/testsuites/psxtests/psxglobalcon01/psxglobalcon01.scn b/testsuites/psxtests/psxglobalcon01/psxglobalcon01.scn
new file mode 100644
index 0000000..13d7b65
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon01/psxglobalcon01.scn
@@ -0,0 +1,2 @@
+*** BEGIN OF TEST PSXGLOBALCON 1 ***
+*** END OF TEST PSXGLOBALCON 1 ***
diff --git a/testsuites/psxtests/psxglobalcon02/Makefile.am b/testsuites/psxtests/psxglobalcon02/Makefile.am
new file mode 100644
index 0000000..0d29894
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon02/Makefile.am
@@ -0,0 +1,19 @@
+rtems_tests_PROGRAMS = psxglobalcon02
+psxglobalcon02_SOURCES = init.cc
+
+dist_rtems_tests_DATA = psxglobalcon02.scn psxglobalcon02.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(psxglobalcon02_OBJECTS)
+LINK_LIBS = $(psxglobalcon02_LDLIBS)
+
+psxglobalcon02$(EXEEXT): $(psxglobalcon02_OBJECTS) $(psxglobalcon02_DEPENDENCIES)
+ @rm -f psxglobalcon02$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/psxtests/psxglobalcon02/init.cc b/testsuites/psxtests/psxglobalcon02/init.cc
new file mode 100644
index 0000000..6de4fbd
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon02/init.cc
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include "tmacros.h"
+
+const char rtems_test_name[] = "PSXGLOBALCON 2";
+
+class A {
+ public:
+ A()
+ {
+ ++i;
+ }
+
+ static int i;
+};
+
+int A::i;
+
+static A a;
+
+static bool rtems_init_done;
+
+extern "C" void Init(rtems_task_argument argument)
+{
+ TEST_BEGIN();
+
+ rtems_test_assert(a.i == 1);
+
+ rtems_init_done = true;
+
+ rtems_task_delete(RTEMS_SELF);
+ rtems_test_assert(0);
+}
+
+static void *POSIX_Init(void *argument)
+{
+ rtems_test_assert(rtems_init_done);
+ rtems_test_assert(a.i == 1);
+
+ TEST_END();
+ rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_MAXIMUM_TASKS 1
+#define CONFIGURE_MAXIMUM_POSIX_THREADS 1
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+#define CONFIGURE_POSIX_INIT_THREAD_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/psxtests/psxglobalcon02/psxglobalcon02.doc b/testsuites/psxtests/psxglobalcon02/psxglobalcon02.doc
new file mode 100644
index 0000000..4dc5bde
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon02/psxglobalcon02.doc
@@ -0,0 +1,12 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: psxglobalcon02
+
+directives:
+
+ - _Thread_Global_construction()
+
+concepts:
+
+ - Ensure that the global construction is performed exactly once in case a
+ RTEMS initialization task and a POSIX initialization thread are present.
diff --git a/testsuites/psxtests/psxglobalcon02/psxglobalcon02.scn b/testsuites/psxtests/psxglobalcon02/psxglobalcon02.scn
new file mode 100644
index 0000000..54ae33b
--- /dev/null
+++ b/testsuites/psxtests/psxglobalcon02/psxglobalcon02.scn
@@ -0,0 +1,2 @@
+*** BEGIN OF TEST PSXGLOBALCON 2 ***
+*** END OF TEST PSXGLOBALCON 2 ***
--
1.8.4.5
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