Major reorganisation of source code; new routine and tests added.

1 files changed, 164 insertions, 0 deletions

diff --git a/pthread_cond_init.c b/pthread_cond_init.c
new file mode 100644
index 0000000..446fcc1
--- /dev/null
+++ b/pthread_cond_init.c
@@ -0,0 +1,164 @@
+/*
+ * pthread_cond_init.c
+ *
+ * Description:
+ * This translation unit implements condition variables and their primitives.
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      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 "implement.h"
+
+
+int
+pthread_cond_init (pthread_cond_t * cond, const pthread_condattr_t * attr)
+     /*
+      * ------------------------------------------------------
+      * DOCPUBLIC
+      *      This function initializes a condition variable.
+      *
+      * PARAMETERS
+      *      cond
+      *              pointer to an instance of pthread_cond_t
+      *
+      *      attr
+      *              specifies optional creation attributes.
+      *
+      *
+      * DESCRIPTION
+      *      This function initializes a condition variable.
+      *
+      * RESULTS
+      *              0               successfully created condition variable,
+      *              EINVAL          'attr' is invalid,
+      *              EAGAIN          insufficient resources (other than
+      *                              memory,
+      *              ENOMEM          insufficient memory,
+      *              EBUSY           'cond' is already initialized,
+      *
+      * ------------------------------------------------------
+      */
+{
+  int result;
+  pthread_cond_t cv = NULL;
+
+  if (cond == NULL)
+    {
+      return EINVAL;
+    }
+
+  if ((attr != NULL && *attr != NULL) &&
+      ((*attr)->pshared == PTHREAD_PROCESS_SHARED))
+    {
+      /*
+       * Creating condition variable that can be shared between
+       * processes.
+       */
+      result = ENOSYS;
+      goto DONE;
+    }
+
+  cv = (pthread_cond_t) calloc(1, sizeof (*cv));
+
+  if (cv == NULL)
+    {
+      result = ENOMEM;
+      goto DONE;
+    }
+
+  cv->nWaitersBlocked   = 0;
+  cv->nWaitersToUnblock = 0;
+  cv->nWaitersGone      = 0;
+
+  if (sem_init(&(cv->semBlockLock), 0, 1) != 0)
+    {
+      result = errno;
+      goto FAIL0;
+    }
+
+  if (sem_init(&(cv->semBlockQueue), 0, 0) != 0)
+    {
+      result = errno;
+      goto FAIL1;
+    }
+
+  if ((result = pthread_mutex_init(&(cv->mtxUnblockLock), 0)) != 0)
+    {
+      goto FAIL2;
+    }
+
+  result = 0;
+
+  goto DONE;
+
+  /*
+   * -------------
+   * Failed...
+   * -------------
+   */
+FAIL2:
+  (void) sem_destroy(&(cv->semBlockQueue));
+
+FAIL1:
+  (void) sem_destroy(&(cv->semBlockLock));
+
+FAIL0:
+  (void) free(cv);
+  cv = NULL;
+
+DONE:
+  if (0 == result)
+    {
+      EnterCriticalSection(&ptw32_cond_list_lock);
+
+      cv->next = NULL;
+      cv->prev = ptw32_cond_list_tail;
+
+      if (ptw32_cond_list_tail != NULL)
+        {
+          ptw32_cond_list_tail->next = cv;
+        }
+
+      ptw32_cond_list_tail = cv;
+
+      if (ptw32_cond_list_head == NULL)
+        {
+          ptw32_cond_list_head = cv;
+        }
+
+      LeaveCriticalSection(&ptw32_cond_list_lock);
+    }
+  *cond = cv;
+
+  return result;
+
+}                               /* pthread_cond_init */