1 files changed, 85 insertions, 0 deletions
diff --git a/tools/schedsim/shell/shared/main_semobtain.c b/tools/schedsim/shell/shared/main_semobtain.c
new file mode 100644
index 0000000000..dc02f9aec9
--- /dev/null
+++ b/tools/schedsim/shell/shared/main_semobtain.c
@@ -0,0 +1,85 @@
+/*
+ *  Task Delete Shell Command Implmentation
+ *
+ *  COPYRIGHT (c) 1989-2010.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+
+#include <rtems.h>
+#include "shell.h"
+#include <rtems/stringto.h>
+#include <schedsim_shell.h>
+#include <rtems/error.h>
+
+int rtems_shell_main_semaphore_obtain(
+  int   argc,
+  char *argv[]
+)
+{
+  rtems_id           id;
+  rtems_status_code  status;
+  long               tmp;
+  rtems_interval     ticks;
+  Thread_Control    *caller;
+ 
+  /* XXX for now, do not support polling */
+
+  if (argc != 3) {
+    fprintf( stderr, "%s: Usage name|id timeout\n", argv[0] );
+    return -1;
+  }
+
+  if ( lookup_semaphore( argv[1], &id ) )
+    return -1;
+
+  if ( rtems_string_to_long(argv[2], &tmp, NULL, 0) ) {
+    printf( "Ceiling argument (%s) is not a number\n", argv[1] );
+    return -1;
+  }
+  ticks = tmp;
+
+  /*
+   *  Now obtain the semaphore
+   *
+   *  If the calling thread blocks, we will return as another thread
+   *  but with a "unsatisfied" return code.  So we check that we did
+   *  a thread switch inside the semaphore obtain.  If we did, then
+   *  just return successfully.
+   */
+  caller = _Thread_Executing;
+  printf("Obtain semaphore (0x%08x) with timeout %d\n", id, ticks );
+  status = rtems_semaphore_obtain( id, RTEMS_DEFAULT_OPTIONS, ticks );
+  if ( caller == _Thread_Executing ) {
+    if ( status != RTEMS_SUCCESSFUL ) {
+      fprintf(
+        stderr,
+        "Semaphore obtain(%s) returned %s\n",
+        argv[1],
+        rtems_status_text( status )
+      ); 
+      return -1;
+    }
+  }
+  return 0;
+}
+
+rtems_shell_cmd_t rtems_shell_SEMAPHORE_OBTAIN_Command = {
+  "semaphore_obtain",                /* name */
+  "semaphore_obtain name ticks",     /* usage */
+  "rtems",                           /* topic */
+  rtems_shell_main_semaphore_obtain, /* command */
+  NULL,                              /* alias */
+  NULL                               /* next */
+};