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| author | Andrew Tridgell <tridge@samba.org> | 2003-08-13 01:53:07 +0000 |
|---|---|---|
| committer | Andrew Tridgell <tridge@samba.org> | 2003-08-13 01:53:07 +0000 |
| commit | cc3a6ea9920f30925a678c566b4af417da6d455b (patch) | |
| tree | 60015a1a5f4b47ac3d133bdbbe32b75815595d4d /source4/tdb/spinlock.h | |
| parent | 4d1f9d1def5bf5fea64722626028d94da49c654c (diff) | |
| parent | ef2e26c91b80556af033d3335e55f5dfa6fff31d (diff) | |
| download | samba-cc3a6ea9920f30925a678c566b4af417da6d455b.tar.gz samba-cc3a6ea9920f30925a678c566b4af417da6d455b.tar.bz2 samba-cc3a6ea9920f30925a678c566b4af417da6d455b.zip | |
This commit was generated by cvs2svn to compensate for changes in r30,
which included commits to RCS files with non-trunk default branches.
(This used to be commit 3a69cffb062d4f1238b8cae10481c1f2ea4d3d8b)
Diffstat (limited to 'source4/tdb/spinlock.h')
| -rw-r--r-- | source4/tdb/spinlock.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/source4/tdb/spinlock.h b/source4/tdb/spinlock.h new file mode 100644 index 0000000000..d6a2ac6eb8 --- /dev/null +++ b/source4/tdb/spinlock.h @@ -0,0 +1,55 @@ +#ifndef __SPINLOCK_H__ +#define __SPINLOCK_H__ + +#if HAVE_CONFIG_H +#include <config.h> +#endif + +#include "tdb.h" + +#ifdef USE_SPINLOCKS + +#define RWLOCK_BIAS 0x1000UL + +/* OS SPECIFIC */ +#define MAX_BUSY_LOOPS 1000 +#undef USE_SCHED_YIELD + +/* ARCH SPECIFIC */ +/* We should make sure these are padded to a cache line */ +#if defined(SPARC_SPINLOCKS) +typedef volatile char spinlock_t; +#elif defined(POWERPC_SPINLOCKS) +typedef volatile unsigned long spinlock_t; +#elif defined(INTEL_SPINLOCKS) +typedef volatile int spinlock_t; +#elif defined(MIPS_SPINLOCKS) +typedef volatile unsigned long spinlock_t; +#else +#error Need to implement spinlock code in spinlock.h +#endif + +typedef struct { + spinlock_t lock; + volatile int count; +} tdb_rwlock_t; + +int tdb_spinlock(TDB_CONTEXT *tdb, int list, int rw_type); +int tdb_spinunlock(TDB_CONTEXT *tdb, int list, int rw_type); +int tdb_create_rwlocks(int fd, unsigned int hash_size); +int tdb_clear_spinlocks(TDB_CONTEXT *tdb); + +#else /* !USE_SPINLOCKS */ +#if 0 +#define tdb_create_rwlocks(fd, hash_size) 0 +#define tdb_spinlock(tdb, list, rw_type) (-1) +#define tdb_spinunlock(tdb, list, rw_type) (-1) +#else +int tdb_spinlock(TDB_CONTEXT *tdb, int list, int rw_type); +int tdb_spinunlock(TDB_CONTEXT *tdb, int list, int rw_type); +int tdb_create_rwlocks(int fd, unsigned int hash_size); +#endif +int tdb_clear_spinlocks(TDB_CONTEXT *tdb); +#endif + +#endif |