mirror of
https://github.com/isar/libmdbx.git
synced 2025-01-02 01:04:13 +08:00
lmdb: detach from ReOpenLDAP project.
This commit is contained in:
Leo Yuriev
parent
73cfae2522
commit
09c140c1f4
137
barriers.h
Normal file
137
barriers.h
Normal file
@ -0,0 +1,137 @@
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/*****************************************************************************
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* Properly compiler/memory/coherence barriers
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* in the most portable way for ReOpenLDAP project.
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*
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* Feedback and comments are welcome.
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* https://gist.github.com/leo-yuriev/ba186a6bf5cf3a27bae7 */
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#if defined(__mips) && defined(__linux)
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/* Only MIPS has explicit cache control */
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# include <asm/cachectl.h>
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#endif
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#if defined(__GNUC__) || defined(__clang__)
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# define MDB_INLINE __inline
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#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */
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# include <intrin.h>
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# if defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
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# pragma intrinsic(__mf)
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# elif defined(__i386__) || defined(__x86_64__)
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# pragma intrinsic(_mm_mfence)
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# endif
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# define MDB_INLINE __inline
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#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun)
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# include <mbarrier.h>
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# define MDB_INLINE inline
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#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) \
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&& (defined(HP_IA64) || defined(__ia64))
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# include <machine/sys/inline.h>
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# define MDB_INLINE
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#elif defined(__IBMC__) && defined(__powerpc)
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# include <atomic.h>
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# define MDB_INLINE
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#elif defined(_AIX)
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# include <builtins.h>
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# include <sys/atomic_op.h>
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# define MDB_INLINE
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#elif (defined(__osf__) && defined(__DECC)) || defined(__alpha)
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# include <machine/builtins.h>
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# include <c_asm.h>
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# define MDB_INLINE
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#elif defined(__MWERKS__)
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/* CodeWarrior - troubles ? */
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# pragma gcc_extensions
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# define MDB_INLINE
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#elif defined(__SNC__)
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/* Sony PS3 - troubles ? */
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# define MDB_INLINE
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#else
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# define MDB_INLINE
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#endif
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#if defined(__i386__) || defined(__x86_64__) \
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|| defined(_M_AMD64) || defined(_M_IX86) \
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|| defined(__i386) || defined(__amd64) \
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|| defined(i386) || defined(__x86_64) \
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|| defined(_AMD64_) || defined(_M_X64)
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# define MDB_CACHE_IS_COHERENT 1
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#elif defined(__hppa) || defined(__hppa__)
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# define MDB_CACHE_IS_COHERENT 1
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#endif
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#ifndef MDB_CACHE_IS_COHERENT
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# define MDB_CACHE_IS_COHERENT 0
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#endif
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#define MDB_BARRIER_COMPILER 0
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#define MDB_BARRIER_MEMORY 1
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static MDB_INLINE void mdb_barrier(int type) {
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#if defined(__clang__)
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__asm__ __volatile__ ("" ::: "memory");
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if (type > MDB_BARRIER_COMPILER)
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# if __has_extension(c_atomic) || __has_extension(cxx_atomic)
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__c11_atomic_thread_fence(__ATOMIC_SEQ_CST);
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# else
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__sync_synchronize();
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# endif
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#elif defined(__GNUC__)
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__asm__ __volatile__ ("" ::: "memory");
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if (type > MDB_BARRIER_COMPILER)
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# if defined(__ATOMIC_SEQ_CST)
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__atomic_thread_fence(__ATOMIC_SEQ_CST);
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# else
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__sync_synchronize();
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# endif
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#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */
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__memory_barrier();
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if (type > MDB_BARRIER_COMPILER)
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# if defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
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__mf();
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# elif defined(__i386__) || defined(__x86_64__)
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_mm_mfence();
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# else
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# error "Unknown target for Intel Compiler, please report to us."
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# endif
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#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun)
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__compiler_barrier();
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if (type > MDB_BARRIER_COMPILER)
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__machine_rw_barrier();
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#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) \
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&& (defined(HP_IA64) || defined(__ia64))
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_Asm_sched_fence(/* LY: no-arg meaning 'all expect ALU', e.g. 0x3D3D */);
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if (type > MDB_BARRIER_COMPILER)
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_Asm_mf();
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#elif defined(_AIX) || defined(__ppc__) || defined(__powerpc__) \
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|| defined(__ppc64__) || defined(__powerpc64__)
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__fence();
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if (type > MDB_BARRIER_COMPILER)
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__lwsync();
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#elif (defined(__osf__) && defined(__DECC)) || defined(__alpha)
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__PAL_DRAINA(); /* LY: excessive ? */
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__MB();
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#else
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# error "Could not guess the kind of compiler, please report to us."
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#endif
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}
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#define mdb_compiler_barrier() \
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mdb_barrier(MDB_BARRIER_COMPILER)
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#define mdb_memory_barrier() \
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mdb_barrier(MDB_BARRIER_MEMORY)
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#define mdb_coherent_barrier() \
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mdb_barrier(MDB_CACHE_IS_COHERENT ? MDB_BARRIER_COMPILER : MDB_BARRIER_MEMORY)
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static MDB_INLINE void mdb_invalidate_cache(void *addr, int nbytes) {
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mdb_coherent_barrier();
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#if defined(__mips) && defined(__linux)
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/* MIPS has cache coherency issues.
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* Note: for any nbytes >= on-chip cache size, entire is flushed. */
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cacheflush(addr, nbytes, DCACHE);
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#elif defined(_M_MRX000) || defined(_MIPS_)
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# error "Sorry, cacheflush() for MIPS not implemented"
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#else
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/* LY: assume no mmap/dcache issues. */
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#endif
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}
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144
mdb.c
144
mdb.c
@ -33,12 +33,13 @@
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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*/
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#include "../../include/reopenldap.h"
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#ifndef MDB_DEBUG
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#ifndef MDB_DEBUG
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# define MDB_DEBUG 0
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# define MDB_DEBUG 0
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#endif
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#endif
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#include "reopen.h"
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#include "barriers.h"
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <sys/param.h>
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@ -49,145 +50,6 @@
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#endif
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#endif
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#include <fcntl.h>
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#include <fcntl.h>
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/*****************************************************************************
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* Properly compiler/memory/coherence barriers
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* in the most portable way for ReOpenLDAP project.
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*
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* Feedback and comments are welcome.
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* https://gist.github.com/leo-yuriev/ba186a6bf5cf3a27bae7 */
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#if defined(__mips) && defined(__linux)
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/* Only MIPS has explicit cache control */
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# include <asm/cachectl.h>
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#endif
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#if defined(__GNUC__) || defined(__clang__)
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# define MDB_INLINE __inline
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#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */
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# include <intrin.h>
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# if defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
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# pragma intrinsic(__mf)
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# elif defined(__i386__) || defined(__x86_64__)
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# pragma intrinsic(_mm_mfence)
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# endif
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# define MDB_INLINE __inline
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#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun)
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# include <mbarrier.h>
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# define MDB_INLINE inline
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#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) \
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&& (defined(HP_IA64) || defined(__ia64))
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# include <machine/sys/inline.h>
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# define MDB_INLINE
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#elif defined(__IBMC__) && defined(__powerpc)
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# include <atomic.h>
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# define MDB_INLINE
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#elif defined(_AIX)
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# include <builtins.h>
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# include <sys/atomic_op.h>
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# define MDB_INLINE
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#elif (defined(__osf__) && defined(__DECC)) || defined(__alpha)
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# include <machine/builtins.h>
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# include <c_asm.h>
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# define MDB_INLINE
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#elif defined(__MWERKS__)
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/* CodeWarrior - troubles ? */
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# pragma gcc_extensions
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# define MDB_INLINE
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#elif defined(__SNC__)
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/* Sony PS3 - troubles ? */
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# define MDB_INLINE
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#else
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# define MDB_INLINE
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#endif
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#if defined(__i386__) || defined(__x86_64__) \
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|| defined(_M_AMD64) || defined(_M_IX86) \
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|| defined(__i386) || defined(__amd64) \
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|| defined(i386) || defined(__x86_64) \
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|| defined(_AMD64_) || defined(_M_X64)
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# define MDB_CACHE_IS_COHERENT 1
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#elif defined(__hppa) || defined(__hppa__)
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# define MDB_CACHE_IS_COHERENT 1
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#endif
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#ifndef MDB_CACHE_IS_COHERENT
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# define MDB_CACHE_IS_COHERENT 0
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#endif
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#define MDB_BARRIER_COMPILER 0
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#define MDB_BARRIER_MEMORY 1
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static MDB_INLINE void mdb_barrier(int type) {
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#if defined(__clang__)
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__asm__ __volatile__ ("" ::: "memory");
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if (type > MDB_BARRIER_COMPILER)
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# if __has_extension(c_atomic) || __has_extension(cxx_atomic)
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__c11_atomic_thread_fence(__ATOMIC_SEQ_CST);
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# else
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__sync_synchronize();
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# endif
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#elif defined(__GNUC__)
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__asm__ __volatile__ ("" ::: "memory");
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if (type > MDB_BARRIER_COMPILER)
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# if defined(__ATOMIC_SEQ_CST)
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__atomic_thread_fence(__ATOMIC_SEQ_CST);
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# else
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__sync_synchronize();
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# endif
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#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */
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__memory_barrier();
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if (type > MDB_BARRIER_COMPILER)
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# if defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
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__mf();
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# elif defined(__i386__) || defined(__x86_64__)
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||||||
_mm_mfence();
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||||||
# else
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||||||
# error "Unknown target for Intel Compiler, please report to us."
|
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||||||
# endif
|
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||||||
#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun)
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__compiler_barrier();
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|
||||||
if (type > MDB_BARRIER_COMPILER)
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|
||||||
__machine_rw_barrier();
|
|
||||||
#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) \
|
|
||||||
&& (defined(HP_IA64) || defined(__ia64))
|
|
||||||
_Asm_sched_fence(/* LY: no-arg meaning 'all expect ALU', e.g. 0x3D3D */);
|
|
||||||
if (type > MDB_BARRIER_COMPILER)
|
|
||||||
_Asm_mf();
|
|
||||||
#elif defined(_AIX) || defined(__ppc__) || defined(__powerpc__) \
|
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||||||
|| defined(__ppc64__) || defined(__powerpc64__)
|
|
||||||
__fence();
|
|
||||||
if (type > MDB_BARRIER_COMPILER)
|
|
||||||
__lwsync();
|
|
||||||
#elif (defined(__osf__) && defined(__DECC)) || defined(__alpha)
|
|
||||||
__PAL_DRAINA(); /* LY: excessive ? */
|
|
||||||
__MB();
|
|
||||||
#else
|
|
||||||
# error "Could not guess the kind of compiler, please report to us."
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
#define mdb_compiler_barrier() \
|
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mdb_barrier(MDB_BARRIER_COMPILER)
|
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||||||
#define mdb_memory_barrier() \
|
|
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mdb_barrier(MDB_BARRIER_MEMORY)
|
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||||||
#define mdb_coherent_barrier() \
|
|
||||||
mdb_barrier(MDB_CACHE_IS_COHERENT ? MDB_BARRIER_COMPILER : MDB_BARRIER_MEMORY)
|
|
||||||
|
|
||||||
static MDB_INLINE void mdb_invalidate_cache(void *addr, int nbytes) {
|
|
||||||
mdb_coherent_barrier();
|
|
||||||
#if defined(__mips) && defined(__linux)
|
|
||||||
/* MIPS has cache coherency issues.
|
|
||||||
* Note: for any nbytes >= on-chip cache size, entire is flushed. */
|
|
||||||
cacheflush(addr, nbytes, DCACHE);
|
|
||||||
#elif defined(_M_MRX000) || defined(_MIPS_)
|
|
||||||
# error "Sorry, cacheflush() for MIPS not implemented"
|
|
||||||
#else
|
|
||||||
/* LY: assume no mmap/dcache issues. */
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
/*****************************************************************************/
|
|
||||||
|
|
||||||
#include <errno.h>
|
#include <errno.h>
|
||||||
#include <limits.h>
|
#include <limits.h>
|
||||||
#include <stddef.h>
|
#include <stddef.h>
|
||||||
|
|||||||
219
reopen.h
Normal file
219
reopen.h
Normal file
@ -0,0 +1,219 @@
|
|||||||
|
/*
|
||||||
|
Copyright (c) 2015 Leonid Yuriev <leo@yuriev.ru>.
|
||||||
|
Copyright (c) 2015 Peter-Service R&D LLC.
|
||||||
|
|
||||||
|
This file is part of ReOpenLDAP.
|
||||||
|
|
||||||
|
ReOpenLDAP is free software; you can redistribute it and/or modify it under
|
||||||
|
the terms of the GNU Affero General Public License as published by
|
||||||
|
the Free Software Foundation; either version 3 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
ReOpenLDAP 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 Affero General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Affero General Public License
|
||||||
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* LY: Please do not ask us for Windows support, just never!
|
||||||
|
* But you can make a fork for Windows, or become maintainer for FreeBSD... */
|
||||||
|
#ifndef __gnu_linux__
|
||||||
|
# error "ReOpenLDAP branch supports only GNU Linux"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef _REOPEN_H
|
||||||
|
#define _REOPEN_H
|
||||||
|
|
||||||
|
#ifndef _GNU_SOURCE
|
||||||
|
# define _GNU_SOURCE
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_ANSIDECL_H
|
||||||
|
# include <ansidecl.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef __has_attribute
|
||||||
|
# define __has_attribute(x) (0)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if !defined(GCC_VERSION) && defined(__GNUC__)
|
||||||
|
# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
|
||||||
|
#endif /* GCC_VERSION */
|
||||||
|
|
||||||
|
#ifndef ALLOW_UNUSED
|
||||||
|
# ifdef ATTRIBUTE_UNUSED
|
||||||
|
# define ALLOW_UNUSED ATTRIBUTE_UNUSED
|
||||||
|
# elif defined(GCC_VERSION) && (GCC_VERSION >= 3004)
|
||||||
|
# define ALLOW_UNUSED __attribute__((__unused__))
|
||||||
|
# elif __has_attribute(__unused__)
|
||||||
|
# define ALLOW_UNUSED __attribute__((__unused__))
|
||||||
|
# elif __has_attribute(unused)
|
||||||
|
# define ALLOW_UNUSED __attribute__((unused))
|
||||||
|
# else
|
||||||
|
# define ALLOW_UNUSED
|
||||||
|
# endif
|
||||||
|
#endif /* ALLOW_UNUSED */
|
||||||
|
|
||||||
|
#if !defined(__thread) && (defined(_MSC_VER) || defined(__DMC__))
|
||||||
|
# define __thread __declspec(thread)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef __forceinline
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# define __forceinline __inline __attribute__((always_inline))
|
||||||
|
# elif ! defined(_MSC_VER)
|
||||||
|
# define __forceinline
|
||||||
|
# endif
|
||||||
|
#endif /* __forceinline */
|
||||||
|
|
||||||
|
#ifndef __must_check_result
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# define __must_check_result __attribute__((warn_unused_result))
|
||||||
|
# else
|
||||||
|
# define __must_check_result
|
||||||
|
# endif
|
||||||
|
#endif /* __must_check_result */
|
||||||
|
|
||||||
|
#ifndef __hot
|
||||||
|
# if defined(__GNUC__) && !defined(__clang__)
|
||||||
|
# define __hot __attribute__((hot, optimize("O3")))
|
||||||
|
# else
|
||||||
|
# define __hot
|
||||||
|
# endif
|
||||||
|
#endif /* __hot */
|
||||||
|
|
||||||
|
#ifndef __cold
|
||||||
|
# if defined(__GNUC__) && !defined(__clang__)
|
||||||
|
# define __cold __attribute__((cold, optimize("Os")))
|
||||||
|
# else
|
||||||
|
# define __cold
|
||||||
|
# endif
|
||||||
|
#endif /* __cold */
|
||||||
|
|
||||||
|
#ifndef __flatten
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# define __flatten __attribute__((flatten))
|
||||||
|
# else
|
||||||
|
# define __flatten
|
||||||
|
# endif
|
||||||
|
#endif /* __flatten */
|
||||||
|
|
||||||
|
#ifndef __aligned
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# define __aligned(N) __attribute__((aligned(N)))
|
||||||
|
# elif defined(__MSC_VER)
|
||||||
|
# define __aligned(N) __declspec(align(N))
|
||||||
|
# else
|
||||||
|
# define __aligned(N)
|
||||||
|
# endif
|
||||||
|
#endif /* __align */
|
||||||
|
|
||||||
|
#ifndef __noreturn
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# define __noreturn __attribute__((noreturn))
|
||||||
|
# else
|
||||||
|
# define __noreturn
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef __nothrow
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# define __nothrow __attribute__((nothrow))
|
||||||
|
# else
|
||||||
|
# define __nothrow
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef CACHELINE_SIZE
|
||||||
|
# if defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
|
||||||
|
# define CACHELINE_SIZE 128
|
||||||
|
# else
|
||||||
|
# define CACHELINE_SIZE 64
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef __cache_aligned
|
||||||
|
# define __cache_aligned __aligned(CACHELINE_SIZE)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef likely
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# ifdef __cplusplus
|
||||||
|
/* LY: workaround for "pretty" boost */
|
||||||
|
static __inline __attribute__((always_inline))
|
||||||
|
bool likely(bool cond) { return __builtin_expect(cond, 1); }
|
||||||
|
# else
|
||||||
|
# define likely(cond) __builtin_expect(!!(cond), 1)
|
||||||
|
# endif
|
||||||
|
# else
|
||||||
|
# define likely(x) (x)
|
||||||
|
# endif
|
||||||
|
#endif /* likely */
|
||||||
|
|
||||||
|
#ifndef unlikely
|
||||||
|
# if defined(__GNUC__) || defined(__clang__)
|
||||||
|
# ifdef __cplusplus
|
||||||
|
/* LY: workaround for "pretty" boost */
|
||||||
|
static __inline __attribute__((always_inline))
|
||||||
|
bool unlikely(bool cond) { return __builtin_expect(cond, 0); }
|
||||||
|
# else
|
||||||
|
# define unlikely(cond) __builtin_expect(!!(cond), 0)
|
||||||
|
# endif
|
||||||
|
# else
|
||||||
|
# define unlikely(x) (x)
|
||||||
|
# endif
|
||||||
|
#endif /* unlikely */
|
||||||
|
|
||||||
|
#ifndef __extern_C
|
||||||
|
# ifdef __cplusplus
|
||||||
|
# define __extern_C extern "C"
|
||||||
|
# else
|
||||||
|
# define __extern_C
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef __noop
|
||||||
|
# define __noop() do {} while (0)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
|
||||||
|
#include <assert.h>
|
||||||
|
|
||||||
|
/* Prototype should match libc runtime. ISO POSIX (2003) & LSB 3.1 */
|
||||||
|
__extern_C void __assert_fail(
|
||||||
|
const char* assertion,
|
||||||
|
const char* file,
|
||||||
|
unsigned line,
|
||||||
|
const char* function) __nothrow __noreturn;
|
||||||
|
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
|
||||||
|
#if defined(HAVE_VALGRIND) || defined(USE_VALGRIND)
|
||||||
|
/* Get debugging help from Valgrind */
|
||||||
|
# include <valgrind/memcheck.h>
|
||||||
|
# ifndef VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE
|
||||||
|
/* LY: available since Valgrind 3.10 */
|
||||||
|
# define VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s)
|
||||||
|
# define VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s)
|
||||||
|
# endif
|
||||||
|
#else
|
||||||
|
# define VALGRIND_CREATE_MEMPOOL(h,r,z)
|
||||||
|
# define VALGRIND_DESTROY_MEMPOOL(h)
|
||||||
|
# define VALGRIND_MEMPOOL_TRIM(h,a,s)
|
||||||
|
# define VALGRIND_MEMPOOL_ALLOC(h,a,s)
|
||||||
|
# define VALGRIND_MEMPOOL_FREE(h,a)
|
||||||
|
# define VALGRIND_MEMPOOL_CHANGE(h,a,b,s)
|
||||||
|
# define VALGRIND_MAKE_MEM_NOACCESS(a,s)
|
||||||
|
# define VALGRIND_MAKE_MEM_DEFINED(a,s)
|
||||||
|
# define VALGRIND_MAKE_MEM_UNDEFINED(a,s)
|
||||||
|
# define VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s)
|
||||||
|
# define VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE(a,s)
|
||||||
|
# define VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,s) (0)
|
||||||
|
# define VALGRIND_CHECK_MEM_IS_DEFINED(a,s) (0)
|
||||||
|
#endif /* ! USE_VALGRIND */
|
||||||
|
|
||||||
|
#endif /* _REOPEN_H */
|
||||||
Loading…
x
Reference in New Issue
Block a user