original files of m241

2026-07-30 11:19:44 +05:30
parent 170c2b3f3a
commit afc7070c1f
12254 changed files with 7655111 additions and 0 deletions
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+/* dshmSpinLock.h - DSHM spinlocks */
+
+/*
+ * Copyright (c) 2006-2007, 2010 Wind River Systems, Inc.
+ *
+ * The right to copy, distribute, modify or otherwise make use
+ * of this software may be licensed only pursuant to the terms
+ * of an applicable Wind River license agreement.
+ */
+
+/*
+modification history
+--------------------
+01g,15jul10,gjj  deprecated the DSHM technology and added deprecation macros.
+01f,29apr10,pad  Moved extern C statement after include statements.
+01e,24aug07,bwa  changed DSHM_ATOMIC_SET/CLEAR to DSHM_TAS/CLEAR
+01d,21jun07,bwa  changed RMW to ATOMIC_SET and _CLEAR
+01c,29jan07,bwa  added tracking of spinlock holder.
+01b,21dec06,bwa  updated to meet code standards.
+01a,05jul06,bwa  written.
+*/
+
+#ifndef __INCdshmSpinLockh
+#define __INCdshmSpinLockh
+
+#include <vxWorks.h>
+#include <dshm/dshm.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct _DSHM_SPINLOCK_OWNER
+    {
+    uint32_t seqnum;		/* sequence number of 'take' operation
+				 * that is considered to be holding the
+				 * lock for too long. */
+    uint16_t holder;		/* rogue entity holding lock */
+    uint16_t pad;
+    } DSHM_SPINLOCK_OWNER;
+
+typedef struct _DSHM_SPINLOCK
+    {
+    volatile int8_t lock;	/* the actual lock location */
+    volatile int8_t breaklock;	/* if held, the lock is getting broken */
+    uint16_t pad;
+    DSHM_SPINLOCK_OWNER owner;
+    } DSHM_SPINLOCK;
+
+extern void dshmSpinLockLibInit (void)
+	_WRS_DEPRECATED ("DSHM will be deprecated, you can use MIPC instead");
+extern void dshmSpinLockInit (DSHM_SPINLOCK * const pLock)
+	_WRS_DEPRECATED ("DSHM will be deprecated, you can use MIPC instead");
+extern int dshmSpinLockTake (DSHM_SPINLOCK * const pLock,
+                                const DSHM_TAS tas,
+				DSHM_SPINLOCK_OWNER * const pOwner,
+                                const int nTries)
+	_WRS_DEPRECATED ("DSHM will be deprecated, you can use MIPC instead");
+extern STATUS dshmSpinLockGive (DSHM_SPINLOCK * const pLock,
+                                    const DSHM_TAS_CLEAR clear,
+				    const int intlvl )
+	_WRS_DEPRECATED ("DSHM will be deprecated, you can use MIPC instead");
+extern void dshmSpinLockBreak (DSHM_SPINLOCK * const pLock,
+                                    const DSHM_TAS tas,
+                                    const DSHM_TAS_CLEAR clear,
+				    DSHM_SPINLOCK_OWNER * const pOwner)
+	_WRS_DEPRECATED ("DSHM will be deprecated, you can use MIPC instead");
+    
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* __INCdshmSpinLockh */
+