From e501d79f46c347203a912332b5892836054335a0 Mon Sep 17 00:00:00 2001
From: Ralf Corsepius <ralf.corsepius@rtems.org>
Date: Mon, 16 Aug 2010 05:39:59 +0000
Subject: 2010-08-16	Alin Rus <alin.codejunkie@gmail.com>

	* posix/include/aio.h: Extend struct aiocb.
	* posix/include/rtems/posix/aio_misc.h: New.
---
 cpukit/posix/Makefile.am                    |   3 +-
 cpukit/posix/include/aio.h                  |   4 ++
 cpukit/posix/include/rtems/posix/aio_misc.h | 101 ++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+), 2 deletions(-)
 create mode 100644 cpukit/posix/include/rtems/posix/aio_misc.h

(limited to 'cpukit/posix')

diff --git a/cpukit/posix/Makefile.am b/cpukit/posix/Makefile.am
index f71b34b48a..463705e688 100644
--- a/cpukit/posix/Makefile.am
+++ b/cpukit/posix/Makefile.am
@@ -24,12 +24,11 @@ include_rtems_posix_HEADERS = include/rtems/posix/sigset.h
 
 if HAS_PTHREADS
 # include
-
 include_HEADERS = include/aio.h include/mqueue.h \
     include/semaphore.h include/devctl.h
 
 # include/rtems/posix
-
+include_rtems_posix_HEADERS += include/rtems/posix/aio_misc.h
 
 include_rtems_posix_HEADERS += include/rtems/posix/cancel.h \
     include/rtems/posix/cond.h include/rtems/posix/config.h \
diff --git a/cpukit/posix/include/aio.h b/cpukit/posix/include/aio.h
index 7472d8a54d..bc74126287 100644
--- a/cpukit/posix/include/aio.h
+++ b/cpukit/posix/include/aio.h
@@ -60,6 +60,7 @@ extern "C" {
  */
 
 struct aiocb {
+  /* public */
   int             aio_fildes;     /* File descriptor */
   off_t           aio_offset;     /* File offset */
   volatile void  *aio_buf;        /* Location of buffer */
@@ -67,6 +68,9 @@ struct aiocb {
   int             aio_reqprio;    /* Request priority offset */
   struct sigevent aio_sigevent;   /* Signal number and value */
   int             aio_lio_opcode; /* Operation to be performed */
+  /* private */
+  int		  error_code;      /* Used for aio_error() */
+  ssize_t	  return_value;     /* Used for aio_return() */
 };
 
 /*
diff --git a/cpukit/posix/include/rtems/posix/aio_misc.h b/cpukit/posix/include/rtems/posix/aio_misc.h
new file mode 100644
index 0000000000..3adbd11cac
--- /dev/null
+++ b/cpukit/posix/include/rtems/posix/aio_misc.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2010, Alin Rus <alin.codejunkie@gmail.com> 
+ * 
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ *
+ * $Id$
+ */
+
+
+#ifndef _AIO_MISC_H
+#define _AIO_MISC_H
+
+#include <stdio.h>
+#include <string.h>
+#include <aio.h>
+#include <pthread.h>
+#include <rtems.h>
+#include <rtems/chain.h>
+#include <rtems/system.h>
+#include <rtems/seterr.h>
+  
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+  /* Actual request being processed */
+  typedef struct rtems_aio_request_s
+  {
+    int policy;                 /* If _POSIX_PRIORITIZED_IO and 
+		                   _POSIX_PRIORITY_SCHEDULING are defined */ 
+    int priority;               /* see above */
+    rtems_chain_node next_prio; /* chain requests in order of priority */
+    pthread_t caller_thread;    /* used for notification */
+    struct aiocb *aiocbp;       /* aio control block */
+  } rtems_aio_request;
+
+  typedef struct rtems_aio_request_chain_s
+  {
+    int fildes;                 /* file descriptor to be processed */  
+    int new_fd;                 /* if this is a newly created chain */
+    rtems_chain_node next_fd;   /* order fd chains in queue */
+    rtems_chain_control perfd;  /* chain of requests for this fd */
+    pthread_mutex_t mutex;      
+    pthread_cond_t cond;
+
+  } rtems_aio_request_chain;
+
+  typedef struct rtems_aio_queue_s
+  {
+    pthread_mutex_t mutex;
+    pthread_cond_t new_req;
+    pthread_attr_t attr;
+
+    rtems_chain_control work_req; /* chains being worked by active threads */
+    rtems_chain_control idle_req; /* fd chains waiting to be processed */
+    unsigned int initialized;     /* specific value if queue is initialized */
+    int size;
+    int active_threads;           /* the number of active threads */
+    int idle_threads;             /* number of idle threads */
+
+  } rtems_aio_queue;
+
+#define AIO_QUEUE_INITIALIZED 0xB00B
+
+#ifndef AIO_MAX_THREADS
+#define AIO_MAX_THREADS 5
+#endif
+
+#ifndef AIO_MAX_QUEUE_SIZE
+#define AIO_MAX_QUEUE_SIZE 30
+#endif
+
+extern int rtems_aio_init (void);
+extern int rtems_aio_enqueue (rtems_aio_request * req);
+extern rtems_aio_request_chain *rtems_aio_search_fd (rtems_chain_control *
+                                                       chain, int fildes,
+                                                       int create);
+
+#ifdef RTEMS_DEBUG
+#include <assert.h>
+
+#define AIO_assert(_x) assert(_x)
+#define AIO_printf(_x) printf(_x)
+#else
+#define AIO_assert(_x)
+#define AIO_printf(_x)
+#endif
+
+#define rtems_aio_set_errno_return_minus_one( _error, _aiocbp ) \
+  do { (_aiocbp)->error_code = (_error);			\
+    (_aiocbp)->return_value = -1;				\
+    rtems_set_errno_and_return_minus_one (_error);} while(0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
-- 
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