typedef NTSTATUS()

in lib/Database/lmdb/mdb.c [68:190]

• 99 lines of code
• 11 McCabe index (conditional complexity)

typedef NTSTATUS (WINAPI NtMapViewOfSectionFunc)
  (IN PHANDLE sh, IN HANDLE ph,
  IN OUT PVOID *addr, IN ULONG_PTR zbits,
  IN SIZE_T cs, IN OUT PLARGE_INTEGER off OPTIONAL,
  IN OUT PSIZE_T vs, IN SECTION_INHERIT ih,
  IN ULONG at, IN ULONG pp);

static NtMapViewOfSectionFunc *NtMapViewOfSection;

typedef NTSTATUS (WINAPI NtCloseFunc)(HANDLE h);

static NtCloseFunc *NtClose;

/** getpid() returns int; MinGW defines pid_t but MinGW64 typedefs it
 *  as int64 which is wrong. MSVC doesn't define it at all, so just
 *  don't use it.
 */
#define MDB_PID_T	int
#define MDB_THR_T	DWORD
#include <sys/types.h>
#include <sys/stat.h>
#ifdef __GNUC__
# include <sys/param.h>
#else
# define LITTLE_ENDIAN	1234
# define BIG_ENDIAN	4321
# define BYTE_ORDER	LITTLE_ENDIAN
# ifndef SSIZE_MAX
#  define SSIZE_MAX	INT_MAX
# endif
#endif
#define MDB_OFF_T	int64_t
#else
#include <sys/types.h>
#include <sys/stat.h>
#define MDB_PID_T	pid_t
#define MDB_THR_T	pthread_t
#include <sys/param.h>
#include <sys/uio.h>
#include <sys/mman.h>
#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
#include <fcntl.h>
#define MDB_OFF_T	off_t
#endif

#if defined(__mips) && defined(__linux)
/* MIPS has cache coherency issues, requires explicit cache control */
#include <asm/cachectl.h>
extern int cacheflush(char *addr, int nbytes, int cache);
#define CACHEFLUSH(addr, bytes, cache)	cacheflush(addr, bytes, cache)
#else
#define CACHEFLUSH(addr, bytes, cache)
#endif

#if defined(__linux) && !defined(MDB_FDATASYNC_WORKS)
/** fdatasync is broken on ext3/ext4fs on older kernels, see
 *	description in #mdb_env_open2 comments. You can safely
 *	define MDB_FDATASYNC_WORKS if this code will only be run
 *	on kernels 3.6 and newer.
 */
#define	BROKEN_FDATASYNC
#endif

#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#ifdef _MSC_VER
#include <io.h>
typedef SSIZE_T	ssize_t;
#else
#include <unistd.h>
#endif

#if defined(__sun) || defined(__ANDROID__)
/* Most platforms have posix_memalign, older may only have memalign */
#define HAVE_MEMALIGN	1
#include <malloc.h>
/* On Solaris, we need the POSIX sigwait function */
#if defined (__sun)
# define _POSIX_PTHREAD_SEMANTICS	1
#endif
#endif

#if !(defined(BYTE_ORDER) || defined(__BYTE_ORDER))
#include <netinet/in.h>
#include <resolv.h>	/* defines BYTE_ORDER on HPUX and Solaris */
#endif

#if defined(__FreeBSD__) && defined(__FreeBSD_version) && __FreeBSD_version >= 1100110
# define MDB_USE_POSIX_MUTEX	1
# define MDB_USE_ROBUST	1
#elif defined(__APPLE__) || defined (BSD) || defined(__FreeBSD_kernel__)
# if !(defined(MDB_USE_POSIX_MUTEX) || defined(MDB_USE_POSIX_SEM))
# define MDB_USE_SYSV_SEM	1
# endif
# define MDB_FDATASYNC		fsync
#elif defined(__ANDROID__)
# define MDB_FDATASYNC		fsync
#endif

#ifndef _WIN32
#include <pthread.h>
#include <signal.h>
#ifdef MDB_USE_POSIX_SEM
# define MDB_USE_HASH		1
#include <semaphore.h>
#elif defined(MDB_USE_SYSV_SEM)
#include <sys/ipc.h>
#include <sys/sem.h>
#ifdef _SEM_SEMUN_UNDEFINED
union semun {
	int val;
	struct semid_ds *buf;
	unsigned short *array;
};