From a416ab17ecf9f2cb0f1e3f7bd645a8d1ce690ca2 Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Mon, 18 Feb 2002 03:16:52 +0000
Subject: Major reorganisation of source code; new routine and tests added.

---
 ptw32_increase_semaphore.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 ptw32_increase_semaphore.c

(limited to 'ptw32_increase_semaphore.c')

diff --git a/ptw32_increase_semaphore.c b/ptw32_increase_semaphore.c
new file mode 100644
index 0000000..5f0bbcb
--- /dev/null
+++ b/ptw32_increase_semaphore.c
@@ -0,0 +1,73 @@
+/*
+ * -------------------------------------------------------------
+ *
+ * Module: ptw32_increase_semaphore.c
+ *
+ * Purpose:
+ *	Semaphores aren't actually part of the PThreads standard.
+ *	They are defined by the POSIX Standard:
+ *
+ *		POSIX 1003.1b-1993	(POSIX.1b)
+ *
+ * -------------------------------------------------------------
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      Pthreads-win32 - POSIX Threads Library for Win32
+ *      Copyright(C) 1998 John E. Bossom
+ *      Copyright(C) 1999,2002 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@ise.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 "semaphore.h"
+#include "implement.h"
+
+#ifdef NEED_SEM
+
+INLINE BOOL
+ptw32_increase_semaphore(sem_t * sem, unsigned int n)
+{
+  BOOL result;
+  register sem_t s = *sem;
+
+  EnterCriticalSection(&s->sem_lock_cs);
+
+  if (s->value + n > s->value)
+    {
+       s->value += n;
+       SetEvent(s->event);
+       result = TRUE;
+    }
+  else
+    {
+       result = FALSE;
+    }
+
+  LeaveCriticalSection(&s->sem_lock_cs);
+  return result;
+}
+
+#endif /* NEED_SEM */
-- 
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