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authorsave2008-04-07 14:17:42 +0000
committersave2008-04-07 14:17:42 +0000
commit3d58a62727346b7ac1a6cb36fed1a06ed72228dd (patch)
treed7788c3cf9f76426aef0286d0202e2097f0fa0eb /cesar/ecos/packages/error/current/src/errno.cxx
parent095dca4b0a8d4924093bab424f71f588fdd84613 (diff)
Moved the complete svn base into the cesar directory.
git-svn-id: svn+ssh://pessac/svn/cesar/trunk@1769 017c9cb6-072f-447c-8318-d5b54f68fe89
Diffstat (limited to 'cesar/ecos/packages/error/current/src/errno.cxx')
-rw-r--r--cesar/ecos/packages/error/current/src/errno.cxx121
1 files changed, 121 insertions, 0 deletions
diff --git a/cesar/ecos/packages/error/current/src/errno.cxx b/cesar/ecos/packages/error/current/src/errno.cxx
new file mode 100644
index 0000000000..fbe969f329
--- /dev/null
+++ b/cesar/ecos/packages/error/current/src/errno.cxx
@@ -0,0 +1,121 @@
+//===========================================================================
+//
+// errno.cxx
+//
+// ISO C and POSIX error code
+//
+//===========================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+//
+// eCos 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; either version 2 or (at your option) any later version.
+//
+// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+//
+// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
+// at http://sources.redhat.com/ecos/ecos-license/
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//===========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): jlarmour
+// Contributors: jlarmour
+// Date: 2000-04-14
+// Purpose: Provide the errno variable
+// Description: This file either provides the errno variable directly,
+// or if thread-safe, using a kernel per-thread data
+// access function
+// Usage:
+//
+//####DESCRIPTIONEND####
+//
+//===========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/system.h>
+#include <pkgconf/error.h> // Configuration header
+
+#ifdef CYGPKG_ERROR_ERRNO
+
+// INCLUDES
+
+#include <cyg/infra/cyg_type.h> // Common project-wide type definitions
+#include <cyg/infra/cyg_trac.h> // Common tracing functions
+#include <cyg/error/errno.h> // Header for this file
+
+#ifdef CYGSEM_ERROR_PER_THREAD_ERRNO
+# include <pkgconf/kernel.h> // kernel configuration
+# include <cyg/kernel/thread.hxx> // per-thread data
+# include <cyg/kernel/thread.inl> // per-thread data
+# include <cyg/kernel/mutex.hxx> // mutexes
+#endif
+
+// GLOBAL VARIABLES
+
+#ifndef CYGSEM_ERROR_PER_THREAD_ERRNO
+
+// errno is initialised to 0 at program startup - ANSI 7.1.4
+Cyg_ErrNo errno = 0;
+
+#else // ifndef CYGSEM_ERROR_PER_THREAD_ERRNO
+
+# if defined(CYGDBG_USE_TRACING) && defined(CYGNUM_ERROR_ERRNO_TRACE_LEVEL)
+static int errno_trace = CYGNUM_ERROR_ERRNO_TRACE_LEVEL;
+# define TL1 (0 < errno_trace)
+# else
+# define TL1 (0)
+# endif
+
+// FUNCTIONS
+
+Cyg_ErrNo *
+cyg_error_get_errno_p( void )
+{
+ Cyg_ErrNo *errno_p;
+
+ CYG_REPORT_FUNCNAMETYPE( "cyg_error_get_errno_p", "&errno is %d");
+
+ // set up the thread data, allocating if necessary (even though the
+ // user _shouldn't_ read errno before its set, we can't stop them - and
+ // ANSI prescribes it has a sensible value (0) before its set too anyway.
+
+ Cyg_Thread *self = Cyg_Thread::self();
+
+ errno_p = (Cyg_ErrNo *)self->get_data_ptr(CYGNUM_KERNEL_THREADS_DATA_ERRNO);
+
+ CYG_TRACE1( TL1, "errno is %d", *errno_p );
+
+ CYG_REPORT_RETVAL( errno_p );
+
+ // return the internal data's errno
+ return errno_p;
+} // cyg_error_get_errno_p()
+
+#endif // ifdef CYGSEM_ERROR_PER_THREAD_ERRNO
+
+#endif // ifdef CYGPKG_ERROR_ERRNO
+
+// EOF errno.cxx