patch-2.3.99-pre2 linux/include/linux/netfilter_ipv4/lockhelp.h
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- Lines: 130
- Date:
Fri Mar 17 10:56:20 2000
- Orig file:
v2.3.99-pre1/linux/include/linux/netfilter_ipv4/lockhelp.h
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre1/linux/include/linux/netfilter_ipv4/lockhelp.h linux/include/linux/netfilter_ipv4/lockhelp.h
@@ -0,0 +1,129 @@
+#ifndef _LOCKHELP_H
+#define _LOCKHELP_H
+#include <linux/config.h>
+
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+#include <linux/interrupt.h>
+#include <linux/smp.h>
+
+/* Header to do help in lock debugging. */
+
+#ifdef CONFIG_NETFILTER_DEBUG
+struct spinlock_debug
+{
+ spinlock_t l;
+ atomic_t locked_by;
+};
+
+struct rwlock_debug
+{
+ rwlock_t l;
+ int read_locked_map;
+ int write_locked_map;
+};
+
+#define DECLARE_LOCK(l) \
+struct spinlock_debug l = { SPIN_LOCK_UNLOCKED, ATOMIC_INIT(-1) }
+#define DECLARE_LOCK_EXTERN(l) \
+extern struct spinlock_debug l
+#define DECLARE_RWLOCK(l) \
+struct rwlock_debug l = { RW_LOCK_UNLOCKED, 0, 0 }
+#define DECLARE_RWLOCK_EXTERN(l) \
+extern struct rwlock_debug l
+
+#define MUST_BE_LOCKED(l) \
+do { if (atomic_read(&(l)->locked_by) != smp_processor_id()) \
+ printk("ASSERT %s:%u %s unlocked\n", __FILE__, __LINE__, #l); \
+} while(0)
+
+#define MUST_BE_UNLOCKED(l) \
+do { if (atomic_read(&(l)->locked_by) == smp_processor_id()) \
+ printk("ASSERT %s:%u %s locked\n", __FILE__, __LINE__, #l); \
+} while(0)
+
+/* Write locked OK as well. */ \
+#define MUST_BE_READ_LOCKED(l) \
+do { if (!((l)->read_locked_map & (1 << smp_processor_id())) \
+ && !((l)->write_locked_map & (1 << smp_processor_id()))) \
+ printk("ASSERT %s:%u %s not readlocked\n", __FILE__, __LINE__, #l); \
+} while(0)
+
+#define MUST_BE_WRITE_LOCKED(l) \
+do { if (!((l)->write_locked_map & (1 << smp_processor_id()))) \
+ printk("ASSERT %s:%u %s not writelocked\n", __FILE__, __LINE__, #l); \
+} while(0)
+
+#define MUST_BE_READ_WRITE_UNLOCKED(l) \
+do { if ((l)->read_locked_map & (1 << smp_processor_id())) \
+ printk("ASSERT %s:%u %s readlocked\n", __FILE__, __LINE__, #l); \
+ else if ((l)->write_locked_map & (1 << smp_processor_id())) \
+ printk("ASSERT %s:%u %s writelocked\n", __FILE__, __LINE__, #l); \
+} while(0)
+
+#define LOCK_BH(lk) \
+do { \
+ MUST_BE_UNLOCKED(lk); \
+ spin_lock_bh(&(lk)->l); \
+ atomic_set(&(lk)->locked_by, smp_processor_id()); \
+} while(0)
+
+#define UNLOCK_BH(lk) \
+do { \
+ MUST_BE_LOCKED(lk); \
+ atomic_set(&(lk)->locked_by, -1); \
+ spin_unlock_bh(&(lk)->l); \
+} while(0)
+
+#define READ_LOCK(lk) \
+do { \
+ MUST_BE_READ_WRITE_UNLOCKED(lk); \
+ read_lock_bh(&(lk)->l); \
+ set_bit(smp_processor_id(), &(lk)->read_locked_map); \
+} while(0)
+
+#define WRITE_LOCK(lk) \
+do { \
+ MUST_BE_READ_WRITE_UNLOCKED(lk); \
+ write_lock_bh(&(lk)->l); \
+ set_bit(smp_processor_id(), &(lk)->write_locked_map); \
+} while(0)
+
+#define READ_UNLOCK(lk) \
+do { \
+ if (!((lk)->read_locked_map & (1 << smp_processor_id()))) \
+ printk("ASSERT: %s:%u %s not readlocked\n", \
+ __FILE__, __LINE__, #lk); \
+ clear_bit(smp_processor_id(), &(lk)->read_locked_map); \
+ read_unlock_bh(&(lk)->l); \
+} while(0)
+
+#define WRITE_UNLOCK(lk) \
+do { \
+ MUST_BE_WRITE_LOCKED(lk); \
+ clear_bit(smp_processor_id(), &(lk)->write_locked_map); \
+ write_unlock_bh(&(lk)->l); \
+} while(0)
+
+#else
+#define DECLARE_LOCK(l) spinlock_t l = SPIN_LOCK_UNLOCKED
+#define DECLARE_LOCK_EXTERN(l) extern spinlock_t l
+#define DECLARE_RWLOCK(l) rwlock_t l = RW_LOCK_UNLOCKED
+#define DECLARE_RWLOCK_EXTERN(l) extern rwlock_t l
+
+#define MUST_BE_LOCKED(l)
+#define MUST_BE_UNLOCKED(l)
+#define MUST_BE_READ_LOCKED(l)
+#define MUST_BE_WRITE_LOCKED(l)
+#define MUST_BE_READ_WRITE_UNLOCKED(l)
+
+#define LOCK_BH(l) spin_lock_bh(l)
+#define UNLOCK_BH(l) spin_unlock_bh(l)
+
+#define READ_LOCK(l) read_lock_bh(l)
+#define WRITE_LOCK(l) write_lock_bh(l)
+#define READ_UNLOCK(l) read_unlock_bh(l)
+#define WRITE_UNLOCK(l) write_unlock_bh(l)
+#endif /*CONFIG_NETFILTER_DEBUG*/
+
+#endif /* _LOCKHELP_H */
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TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)