From 2ab3d99967d68c79351fe2a3df22c445447e3010 Mon Sep 17 00:00:00 2001
From: Michał Cichoń <michcic@gmail.com>
Date: Tue, 15 Nov 2011 22:28:48 +0100
Subject: Initial import.

---
 pthreads/src/pthread_self.c | 141 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 pthreads/src/pthread_self.c

(limited to 'pthreads/src/pthread_self.c')

diff --git a/pthreads/src/pthread_self.c b/pthreads/src/pthread_self.c
new file mode 100644
index 0000000..9a1765f
--- /dev/null
+++ b/pthreads/src/pthread_self.c
@@ -0,0 +1,141 @@
+/*
+ * pthread_self.c
+ *
+ * Description:
+ * This translation unit implements miscellaneous thread functions.
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      Pthreads-win32 - POSIX Threads Library for Win32
+ *      Copyright(C) 1998 John E. Bossom
+ *      Copyright(C) 1999,2005 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@callisto.canberra.edu.au
+ * 
+ *      The current list of contributors is contained
+ *      in the file CONTRIBUTORS included with the source
+ *      code distribution. The list can also be seen at the
+ *      following World Wide Web location:
+ *      http://sources.redhat.com/pthreads-win32/contributors.html
+ * 
+ *      This library is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU Lesser General Public
+ *      License as published by the Free Software Foundation; either
+ *      version 2 of the License, or (at your option) any later version.
+ * 
+ *      This library 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
+ *      Lesser General Public License for more details.
+ * 
+ *      You should have received a copy of the GNU Lesser General Public
+ *      License along with this library in the file COPYING.LIB;
+ *      if not, write to the Free Software Foundation, Inc.,
+ *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+pthread_t
+pthread_self (void)
+     /*
+      * ------------------------------------------------------
+      * DOCPUBLIC
+      *      This function returns a reference to the current running
+      *      thread.
+      *
+      * PARAMETERS
+      *      N/A
+      *
+      *
+      * DESCRIPTION
+      *      This function returns a reference to the current running
+      *      thread.
+      *
+      * RESULTS
+      *              pthread_t       reference to the current thread
+      *
+      * ------------------------------------------------------
+      */
+{
+  pthread_t self;
+  pthread_t nil = {NULL, 0};
+  ptw32_thread_t * sp;
+
+#if defined(_UWIN)
+  if (!ptw32_selfThreadKey)
+    return nil;
+#endif
+
+  sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
+
+  if (sp != NULL)
+    {
+      self = sp->ptHandle;
+    }
+  else
+    {
+      /*
+       * Need to create an implicit 'self' for the currently
+       * executing thread.
+       */
+      self = ptw32_new ();
+      sp = (ptw32_thread_t *) self.p;
+
+      if (sp != NULL)
+	{
+	  /*
+	   * This is a non-POSIX thread which has chosen to call
+	   * a POSIX threads function for some reason. We assume that
+	   * it isn't joinable, but we do assume that it's
+	   * (deferred) cancelable.
+	   */
+	  sp->implicit = 1;
+	  sp->detachState = PTHREAD_CREATE_DETACHED;
+	  sp->thread = GetCurrentThreadId ();
+
+#if defined(NEED_DUPLICATEHANDLE)
+	  /*
+	   * DuplicateHandle does not exist on WinCE.
+	   *
+	   * NOTE:
+	   * GetCurrentThread only returns a pseudo-handle
+	   * which is only valid in the current thread context.
+	   * Therefore, you should not pass the handle to
+	   * other threads for whatever purpose.
+	   */
+	  sp->threadH = GetCurrentThread ();
+#else
+	  if (!DuplicateHandle (GetCurrentProcess (),
+				GetCurrentThread (),
+				GetCurrentProcess (),
+				&sp->threadH,
+				0, FALSE, DUPLICATE_SAME_ACCESS))
+	    {
+	      /*
+	       * Should not do this, but we have no alternative if
+	       * we can't get a Win32 thread handle.
+	       * Thread structs are never freed.
+	       */
+	      ptw32_threadReusePush (self);
+	      /*
+	       * As this is a win32 thread calling us and we have failed,
+	       * return a value that makes sense to win32.
+	       */
+	      return nil;
+	    }
+#endif
+
+	  /*
+	   * No need to explicitly serialise access to sched_priority
+	   * because the new handle is not yet public.
+	   */
+	  sp->sched_priority = GetThreadPriority (sp->threadH);
+	  pthread_setspecific (ptw32_selfThreadKey, (void *) sp);
+	}
+    }
+
+  return (self);
+
+}				/* pthread_self */
-- 
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