config: Remove CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE

The CONFIGURE_HAS_OWN_INIT_TASK_TABLE and
CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE are the last *_HAS_OWN_*
configuration options.  These two options are probably unused, see also:

* https://lists.rtems.org/pipermail/users/2019-April/033129.html

* https://lists.rtems.org/pipermail/users/2019-April/033130.html

Removing them simplifies the configuration. If there is a real user need
which shows up after the removal, we can resurrect them on demand.

Using CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE would have required the
use of the undocumented CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME and
CONFIGURE_POSIX_INIT_THREAD_TABLE_SIZE configuration options.

Update #3874.

5 files changed, 38 insertions, 100 deletions

diff --git a/cpukit/include/rtems/confdefs.h b/cpukit/include/rtems/confdefs.h
index 13ba4466f0..6a8b9ecb7e 100644
--- a/cpukit/include/rtems/confdefs.h
+++ b/cpukit/include/rtems/confdefs.h
@@ -2155,32 +2155,14 @@ struct _reent *__getreent(void)
 #endif
 
 #ifdef CONFIGURE_POSIX_INIT_THREAD_TABLE
-  #ifndef CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE
-    #ifndef CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT
-      #define CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT   POSIX_Init
-    #endif
-
-    #ifndef CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
-      #define CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE \
-        CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
-    #endif
-
-    #ifdef CONFIGURE_INIT
-      posix_initialization_threads_table POSIX_Initialization_threads[] = {
-        { CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT,
-          CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE }
-      };
-    #endif
-
-    #define CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME \
-      POSIX_Initialization_threads
+  #ifndef CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT
+    #define CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT   POSIX_Init
+  #endif
 
-    #define CONFIGURE_POSIX_INIT_THREAD_TABLE_SIZE \
-      RTEMS_ARRAY_SIZE(CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME)
-  #endif /* !CONFIGURE_POSIX_HAS_OWN_INIT_TASK_TABLE */
-#else /* !CONFIGURE_POSIX_INIT_THREAD_TABLE */
-  #define CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME NULL
-  #define CONFIGURE_POSIX_INIT_THREAD_TABLE_SIZE 0
+  #ifndef CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
+    #define CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE \
+      CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
+  #endif
 #endif /* CONFIGURE_POSIX_INIT_THREAD_TABLE */
 
 /**
@@ -2755,17 +2737,14 @@ struct _reent *__getreent(void)
  *  then we need to install the code that runs that loop.
  */
 #ifdef CONFIGURE_INIT
-  #if defined(CONFIGURE_POSIX_INIT_THREAD_TABLE) || \
-      defined(CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE)
-    posix_initialization_threads_table * const
-      _Configuration_POSIX_Initialization_threads =
-        CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME;
-
-    const size_t _Configuration_POSIX_Initialization_thread_count =
-      CONFIGURE_POSIX_INIT_THREAD_TABLE_SIZE;
+  #if defined(CONFIGURE_POSIX_INIT_THREAD_TABLE)
+    const posix_initialization_threads_table _POSIX_Threads_User_thread_table = {
+      CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT,
+      CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
+    };
 
     RTEMS_SYSINIT_ITEM(
-      _POSIX_Threads_Initialize_user_threads_body,
+      _POSIX_Threads_Initialize_user_thread,
       RTEMS_SYSINIT_POSIX_USER_THREADS,
       RTEMS_SYSINIT_ORDER_MIDDLE
     );
@@ -2990,6 +2969,10 @@ struct _reent *__getreent(void)
   #warning "The CONFIGURE_MAXIMUM_PTYS configuration option is obsolete since RTEMS 5.1"
 #endif
 
+#ifdef CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE
+  #warning "The CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE configuration option is obsolete since RTEMS 5.1"
+#endif
+
 #ifdef CONFIGURE_TERMIOS_DISABLED
   #warning "The CONFIGURE_TERMIOS_DISABLED configuration option is obsolete since RTEMS 5.1"
 #endif
diff --git a/cpukit/include/rtems/config.h b/cpukit/include/rtems/config.h
index 24a654e39c..d9f91db741 100644
--- a/cpukit/include/rtems/config.h
+++ b/cpukit/include/rtems/config.h
@@ -34,7 +34,6 @@
 #include <rtems/score/userextdata.h>
 #include <rtems/score/watchdogticks.h>
 #include <rtems/rtems/config.h>
-#include <rtems/posix/config.h>
 #include <rtems/extension.h>
 #if defined(RTEMS_MULTIPROCESSING)
 #include <rtems/rtems/types.h>
diff --git a/cpukit/include/rtems/posix/config.h b/cpukit/include/rtems/posix/config.h
deleted file mode 100644
index a7e60c2fee..0000000000
--- a/cpukit/include/rtems/posix/config.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/**
- * @file
- *
- * @brief User Defined Configuration Parameters Specific For The POSIX API
- * 
- * This include file contains the table of user defined configuration
- * parameters specific for the POSIX API.
- */
-
-/*
- *  COPYRIGHT (c) 1989-2014.
- *  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.
- */
-
-#ifndef _RTEMS_POSIX_CONFIG_H
-#define _RTEMS_POSIX_CONFIG_H
-
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- *  @defgroup PosixConfig Configuration
- *
- *  @ingroup POSIXAPI
- *
- *  This encapsulates functionality related to the application's configuration
- *  of the Classic API including the maximum number of each class of objects.
- */
-/**@{*/
-
-/**
- *  For now, we are only allowing the user to specify the entry point
- *  and stack size for POSIX initialization threads.
- */
-typedef struct {
-  /** This is the entry point for a POSIX initialization thread. */
-  void       *(*thread_entry)(void *);
-  /** This is the stack size for a POSIX initialization thread. */
-  int       stack_size;
-} posix_initialization_threads_table;
-
-extern posix_initialization_threads_table * const
-  _Configuration_POSIX_Initialization_threads;
-
-extern const size_t _Configuration_POSIX_Initialization_thread_count;
-
-/**@}*/
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-/* end of include file */
diff --git a/cpukit/include/rtems/posix/pthread.h b/cpukit/include/rtems/posix/pthread.h
index 5df938e0b9..8aa11c53fe 100644
--- a/cpukit/include/rtems/posix/pthread.h
+++ b/cpukit/include/rtems/posix/pthread.h
@@ -36,15 +36,32 @@ extern "C" {
  */
 /**@{**/
 
+/**
+ *  For now, we are only allowing the user to specify the entry point
+ *  and stack size for POSIX initialization threads.
+ */
+typedef struct {
+  /** This is the entry point for a POSIX initialization thread. */
+  void       *(*thread_entry)(void *);
+  /** This is the stack size for a POSIX initialization thread. */
+  int       stack_size;
+} posix_initialization_threads_table;
+
 extern const size_t _POSIX_Threads_Minimum_stack_size;
 
 /**
- * @brief POSIX threads initialize user threads body.
+ * @brief Initialization table for the first user POSIX thread.
  *
- * This routine creates and starts all configured user
- * initialization threads.
+ * This table is used by _POSIX_Threads_Initialize_user_thread() and
+ * initialized via <rtems/confdefs.h>.
+ */
+extern const posix_initialization_threads_table
+  _POSIX_Threads_User_thread_table;
+
+/**
+ * @brief System initialization handler to create the first user POSIX thread.
  */
-extern void _POSIX_Threads_Initialize_user_threads_body(void);
+extern void _POSIX_Threads_Initialize_user_thread( void );
 
 /**
  * The following defines the information control block used to manage
diff --git a/cpukit/include/rtems/posix/pthreadimpl.h b/cpukit/include/rtems/posix/pthreadimpl.h
index fd263c2761..74e46e4d92 100644
--- a/cpukit/include/rtems/posix/pthreadimpl.h
+++ b/cpukit/include/rtems/posix/pthreadimpl.h
@@ -20,7 +20,6 @@
 #define _RTEMS_POSIX_PTHREADIMPL_H
 
 #include <rtems/posix/pthread.h>
-#include <rtems/posix/config.h>
 #include <rtems/posix/threadsup.h>
 #include <rtems/score/assert.h>
 #include <rtems/score/objectimpl.h>