#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
+#ifdef _WIN32
+#include <windows.h>
+#else
#include <sys/uio.h>
#include <sys/mman.h>
#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
#include <fcntl.h>
+#endif
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
+#ifdef _WIN32
+#define pthread_t DWORD
+#define pthread_mutex_t HANDLE
+#define pthread_key_t DWORD
+#define pthread_self() GetCurrentThreadId()
+#define pthread_key_create(x,y) *(x) = TlsAlloc()
+#define pthread_key_delete(x) TlsFree(x)
+#define pthread_getspecific(x) TlsGetValue(x)
+#define pthread_setspecific(x,y) TlsSetValue(x,y)
+#define pthread_mutex_unlock(x) ReleaseMutex(x)
+#define pthread_mutex_lock(x) WaitForSingleObject(x, INFINITE)
+#define LOCK_MUTEX_R(env) pthread_mutex_lock(env->me_rmutex)
+#define UNLOCK_MUTEX_R(env) pthread_mutex_unlock(env->me_rmutex)
+#define LOCK_MUTEX_W(env) pthread_mutex_lock(env->me_wmutex)
+#define UNLOCK_MUTEX_W(env) pthread_mutex_unlock(env->me_wmutex)
+#define getpid() GetCurrentProcessId()
+#else
#include <pthread.h>
+#define LOCK_MUTEX_R(env) pthread_mutex_lock(&env->me_txns->mti_mutex)
+#define UNLOCK_MUTEX_R(env) pthread_mutex_unlock(&env->me_txns->mti_mutex)
+#define LOCK_MUTEX_W(env) pthread_mutex_lock(&env->me_txns->mti_wmutex)
+#define UNLOCK_MUTEX_W(env) pthread_mutex_unlock(&env->me_txns->mti_wmutex)
+#endif
+#ifdef _WIN32
+#define fdatasync(fd) !FlushFileBuffers(fd)
+#define ErrCode() GetLastError()
+#define GetPageSize(x) {SYSTEM_INFO si; GetSystemInfo(&si); (x) = si.dwPageSize;}
+#define close(fd) CloseHandle(fd)
+#define munmap(ptr,len) UnmapViewOfFile(ptr)
+#else
+#define ErrCode() errno
+#define HANDLE int
+#define INVALID_HANDLE_VALUE -1
+#define GetPageSize(x) (x) = sysconf(_SC_PAGE_SIZE)
+#endif
#include "mdb.h"
#define ULONG unsigned long
typedef struct MDB_txbody {
uint32_t mtb_magic;
uint32_t mtb_version;
+/* For POSIX the actual mutexes reside in shared memory.
+ * On Windows, mutexes are allocated by the kernel; we store
+ * the name in shared memory so that other processes can
+ * grab them.
+ */
+#ifdef _WIN32
+ char mtb_rmname[32];
+#else
pthread_mutex_t mtb_mutex;
+#endif
ULONG mtb_txnid;
uint32_t mtb_numreaders;
uint32_t mtb_me_toggle;
#define mti_magic mt1.mtb.mtb_magic
#define mti_version mt1.mtb.mtb_version
#define mti_mutex mt1.mtb.mtb_mutex
+#define mti_rmname mt1.mtb.mtb_rmname
#define mti_txnid mt1.mtb.mtb_txnid
#define mti_numreaders mt1.mtb.mtb_numreaders
#define mti_me_toggle mt1.mtb.mtb_me_toggle
char pad[(sizeof(MDB_txbody)+CACHELINE-1) & ~(CACHELINE-1)];
} mt1;
union {
+#ifdef _WIN32
+ char mt2_wmname[32];
+#define mti_wmname mt2.mt2_wmname
+#else
pthread_mutex_t mt2_wmutex;
#define mti_wmutex mt2.mt2_wmutex
+#endif
char pad[(sizeof(pthread_mutex_t)+CACHELINE-1) & ~(CACHELINE-1)];
} mt2;
MDB_reader mti_readers[1];
} MDB_xcursor;
struct MDB_env {
- int me_fd;
- int me_lfd;
- int me_mfd; /* just for writing the meta pages */
+ HANDLE me_fd;
+ HANDLE me_lfd;
+ HANDLE me_mfd; /* just for writing the meta pages */
#define MDB_FATAL_ERROR 0x80000000U
uint32_t me_flags;
uint32_t me_extrapad; /* unused for now */
pgno_t me_free_pgs[MDB_IDL_UM_SIZE];
MIDL2 me_dirty_list[MDB_IDL_DB_SIZE];
LAZY_RWLOCK_DEF(me_dblock);
+#ifdef _WIN32
+ HANDLE me_rmutex; /* Windows mutexes don't reside in shared mem */
+ HANDLE me_wmutex;
+#endif
};
#define NODESIZE offsetof(MDB_node, mn_data)
static int memnrcmp(const void *s1, size_t n1,
const void *s2, size_t n2);
+#ifdef _WIN32
+static SECURITY_DESCRIPTOR mdb_null_sd;
+static SECURITY_ATTRIBUTES mdb_all_sa;
+static int mdb_sec_inited;
+#endif
+
static int
memncmp(const void *s1, size_t n1, const void *s2, size_t n2)
{
return MDB_VERSION_STRING;
}
-static char *const errstr[] = {
+static char *const mdb_errstr[] = {
"MDB_KEYEXIST: Key/data pair already exists",
"MDB_NOTFOUND: No matching key/data pair found",
"MDB_PAGE_NOTFOUND: Requested page not found",
return ("Successful return: 0");
if (err >= MDB_KEYEXIST && err <= MDB_VERSION_MISMATCH)
- return errstr[err - MDB_KEYEXIST];
+ return mdb_errstr[err - MDB_KEYEXIST];
return strerror(err);
}
int rc = 0;
if (force || !F_ISSET(env->me_flags, MDB_NOSYNC)) {
if (fdatasync(env->me_fd))
- rc = errno;
+ rc = ErrCode();
}
return rc;
}
pid_t pid = getpid();
pthread_t tid = pthread_self();
- pthread_mutex_lock(&env->me_txns->mti_mutex);
+ LOCK_MUTEX_R(env);
for (i=0; i<env->me_txns->mti_numreaders; i++)
if (env->me_txns->mti_readers[i].mr_pid == 0)
break;
if (i == env->me_maxreaders) {
- pthread_mutex_unlock(&env->me_txns->mti_mutex);
+ UNLOCK_MUTEX_R(env);
return ENOMEM;
}
env->me_txns->mti_readers[i].mr_pid = pid;
env->me_txns->mti_readers[i].mr_tid = tid;
if (i >= env->me_txns->mti_numreaders)
env->me_txns->mti_numreaders = i+1;
- pthread_mutex_unlock(&env->me_txns->mti_mutex);
+ UNLOCK_MUTEX_R(env);
r = &env->me_txns->mti_readers[i];
pthread_setspecific(env->me_txkey, r);
}
r->mr_txnid = txn->mt_txnid;
txn->mt_u.reader = r;
} else {
- pthread_mutex_lock(&env->me_txns->mti_wmutex);
+ LOCK_MUTEX_W(env);
txn->mt_txnid = env->me_txns->mti_txnid+1;
txn->mt_toggle = env->me_txns->mti_me_toggle;
return MDB_PANIC;
}
if ((txn = calloc(1, sizeof(MDB_txn) + env->me_maxdbs * sizeof(MDB_db))) == NULL) {
- DPRINTF("calloc: %s", strerror(errno));
+ DPRINTF("calloc: %s", strerror(ErrCode()));
return ENOMEM;
}
txn->mt_dbs = (MDB_db *)(txn+1);
env->me_txn = NULL;
for (i=2; i<env->me_numdbs; i++)
env->me_dbxs[i].md_dirty = 0;
- pthread_mutex_unlock(&env->me_txns->mti_wmutex);
+ UNLOCK_MUTEX_W(env);
}
}
MDB_dpage *dp;
MDB_env *env;
pgno_t next;
- struct iovec iov[MDB_COMMIT_PAGES];
assert(txn != NULL);
assert(txn->mt_env != NULL);
next = 0;
i = 1;
do {
+#ifdef _WIN32
+ /* Windows actually supports scatter/gather I/O, but only on
+ * unbuffered file handles. Since we're relying on the OS page
+ * cache for all our data, that's self-defeating. So we just
+ * write pages one at a time. We use the ov structure to set
+ * the write offset, to at least save the overhead of a Seek
+ * system call.
+ */
+ OVERLAPPED ov;
+ memset(&ov, 0, sizeof(ov));
+ for (; i<=txn->mt_u.dirty_list[0].mid; i++) {
+ dp = txn->mt_u.dirty_list[i].mptr;
+ DPRINTF("committing page %lu", dp->p.mp_pgno);
+ size = dp->p.mp_pgno * env->me_psize;
+ ov.Offset = size & 0xffffffff;
+ ov.OffsetHigh = size >> 16;
+ ov.OffsetHigh >>= 16;
+ /* clear dirty flag */
+ dp->p.mp_flags &= ~P_DIRTY;
+ rc = WriteFile(env->me_fd, &dp->p, env->me_psize * dp->h.md_num, NULL, &ov);
+ if (!rc) {
+ n = ErrCode();
+ DPRINTF("WriteFile: %d", n);
+ mdb_txn_abort(txn);
+ return n;
+ }
+ }
+ done = 1;;
+#else
+ struct iovec iov[MDB_COMMIT_PAGES];
n = 0;
done = 1;
size = 0;
DPRINTF("committing %u dirty pages", n);
rc = writev(env->me_fd, iov, n);
if (rc != size) {
- n = errno;
+ n = ErrCode();
if (rc > 0)
DPUTS("short write, filesystem full?");
else
- DPRINTF("writev: %s", strerror(errno));
+ DPRINTF("writev: %s", strerror(n));
mdb_txn_abort(txn);
return n;
}
DPRINTF("committing %u dirty pages", n);
rc = writev(env->me_fd, iov, n);
if (rc != size) {
- n = errno;
+ n = ErrCode();
if (rc > 0)
DPUTS("short write, filesystem full?");
else
- DPRINTF("writev: %s", strerror(errno));
+ DPRINTF("writev: %s", strerror(n));
mdb_txn_abort(txn);
return n;
}
-
+#endif
} while (!done);
/* Drop the dirty pages.
LAZY_RWLOCK_UNLOCK(&env->me_dblock);
}
- pthread_mutex_unlock(&env->me_txns->mti_wmutex);
+ UNLOCK_MUTEX_W(env);
free(txn);
return MDB_SUCCESS;
char page[PAGESIZE];
MDB_page *p;
MDB_meta *m;
- int rc;
-
- assert(env != NULL);
+ int rc, err;
/* We don't know the page size yet, so use a minimum value.
*/
- if ((rc = pread(env->me_fd, page, PAGESIZE, 0)) == 0) {
+#ifdef _WIN32
+ if (!ReadFile(env->me_fd, page, PAGESIZE, (DWORD *)&rc, NULL) || rc == 0)
+#else
+ if ((rc = read(env->me_fd, page, PAGESIZE)) == 0)
+#endif
+ {
return ENOENT;
- } else if (rc != PAGESIZE) {
+ }
+ else if (rc != PAGESIZE) {
+ err = ErrCode();
if (rc > 0)
- errno = EINVAL;
- DPRINTF("read: %s", strerror(errno));
- return errno;
+ err = EINVAL;
+ DPRINTF("read: %s", strerror(err));
+ return err;
}
p = (MDB_page *)page;
unsigned int psize;
DPUTS("writing new meta page");
- psize = sysconf(_SC_PAGE_SIZE);
+
+ GetPageSize(psize);
meta->mm_magic = MDB_MAGIC;
meta->mm_version = MDB_VERSION;
m = METADATA(q);
memcpy(m, meta, sizeof(*meta));
+#ifdef _WIN32
+ {
+ DWORD len;
+ rc = WriteFile(env->me_fd, p, psize * 2, &len, NULL);
+ rc = (len == psize * 2) ? MDB_SUCCESS : ErrCode();
+ }
+#else
rc = write(env->me_fd, p, psize * 2);
+ rc = (rc == (int)psize * 2) ? MDB_SUCCESS : ErrCode();
+#endif
free(p);
- return (rc == (int)psize * 2) ? MDB_SUCCESS : errno;
+ return rc;
}
static int
off_t off;
int rc, len, toggle;
char *ptr;
+#ifdef _WIN32
+ OVERLAPPED ov;
+#endif
assert(txn != NULL);
assert(txn->mt_env != NULL);
off += PAGEHDRSZ;
/* Write to the SYNC fd */
+#ifdef _WIN32
+ {
+ memset(&ov, 0, sizeof(ov));
+ ov.Offset = off;
+ WriteFile(env->me_mfd, ptr, len, (DWORD *)&rc, &ov);
+ }
+#else
rc = pwrite(env->me_mfd, ptr, len, off);
+#endif
if (rc != len) {
int r2;
- rc = errno;
+ rc = ErrCode();
DPUTS("write failed, disk error?");
/* On a failure, the pagecache still contains the new data.
* Write some old data back, to prevent it from being used.
*/
meta.mm_last_pg = metab.mm_last_pg;
meta.mm_txnid = metab.mm_txnid;
+#ifdef _WIN32
+ WriteFile(env->me_fd, ptr, len, NULL, &ov);
+#else
r2 = pwrite(env->me_fd, ptr, len, off);
+#endif
env->me_flags |= MDB_FATAL_ERROR;
return rc;
}
e->me_maxreaders = DEFAULT_READERS;
e->me_maxdbs = 2;
- e->me_fd = -1;
- e->me_lfd = -1;
- e->me_mfd = -1;
+ e->me_fd = INVALID_HANDLE_VALUE;
+ e->me_lfd = INVALID_HANDLE_VALUE;
+ e->me_mfd = INVALID_HANDLE_VALUE;
*env = e;
return MDB_SUCCESS;
}
env->me_mapsize = newenv ? DEFAULT_MAPSIZE : meta.mm_mapsize;
}
+#ifdef _WIN32
+ {
+ HANDLE mh;
+ LONG sizelo, sizehi;
+ sizelo = env->me_mapsize & 0xffffffff;
+ sizehi = env->me_mapsize >> 16; /* pointless on WIN32, only needed on W64 */
+ sizehi >>= 16;
+ /* Windows won't create mappings for zero length files.
+ * Just allocate the maxsize right now.
+ */
+ if (newenv) {
+ SetFilePointer(env->me_fd, sizelo, sizehi ? &sizehi : NULL, 0);
+ if (!SetEndOfFile(env->me_fd))
+ return ErrCode();
+ SetFilePointer(env->me_fd, 0, NULL, 0);
+ }
+ mh = CreateFileMapping(env->me_fd, NULL, PAGE_READONLY,
+ sizehi, sizelo, NULL);
+ if (!mh)
+ return ErrCode();
+ env->me_map = MapViewOfFileEx(mh, FILE_MAP_READ, 0, 0, env->me_mapsize,
+ meta.mm_address);
+ CloseHandle(mh);
+ if (!env->me_map)
+ return ErrCode();
+ }
+#else
i = MAP_SHARED;
if (meta.mm_address && (flags & MDB_FIXEDMAP))
i |= MAP_FIXED;
env->me_map = mmap(meta.mm_address, env->me_mapsize, PROT_READ, i,
env->me_fd, 0);
if (env->me_map == MAP_FAILED)
- return errno;
+ return ErrCode();
+#endif
if (newenv) {
meta.mm_mapsize = env->me_mapsize;
return MDB_SUCCESS;
}
+#ifndef _WIN32
+/* Windows doesn't support destructor callbacks for thread-specific storage */
static void
mdb_env_reader_dest(void *ptr)
{
reader->mr_pid = 0;
reader->mr_tid = 0;
}
+#endif
/* downgrade the exclusive lock on the region back to shared */
static void
mdb_env_share_locks(MDB_env *env)
{
- struct flock lock_info;
int toggle = 0;
if (env->me_metas[0]->mm_txnid < env->me_metas[1]->mm_txnid)
env->me_txns->mti_me_toggle = toggle;
env->me_txns->mti_txnid = env->me_metas[toggle]->mm_txnid;
- memset((void *)&lock_info, 0, sizeof(lock_info));
- lock_info.l_type = F_RDLCK;
- lock_info.l_whence = SEEK_SET;
- lock_info.l_start = 0;
- lock_info.l_len = 1;
- fcntl(env->me_lfd, F_SETLK, &lock_info);
+#ifdef _WIN32
+ {
+ OVERLAPPED ov;
+ /* First acquire a shared lock. The Unlock will
+ * then release the existing exclusive lock.
+ */
+ memset(&ov, 0, sizeof(ov));
+ LockFileEx(env->me_lfd, 0, 0, 1, 0, &ov);
+ UnlockFile(env->me_lfd, 0, 0, 1, 0);
+ }
+#else
+ {
+ struct flock lock_info;
+ /* The shared lock replaces the existing lock */
+ memset((void *)&lock_info, 0, sizeof(lock_info));
+ lock_info.l_type = F_RDLCK;
+ lock_info.l_whence = SEEK_SET;
+ lock_info.l_start = 0;
+ lock_info.l_len = 1;
+ fcntl(env->me_lfd, F_SETLK, &lock_info);
+ }
+#endif
}
static int
{
int rc;
off_t size, rsize;
- struct flock lock_info;
*excl = 0;
+#ifdef _WIN32
+ if ((env->me_lfd = CreateFile(lpath, GENERIC_READ|GENERIC_WRITE,
+ FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_ALWAYS,
+ FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE) {
+ rc = ErrCode();
+ return rc;
+ }
+ /* Try to get exclusive lock. If we succeed, then
+ * nobody is using the lock region and we should initialize it.
+ */
+ {
+ if (LockFile(env->me_lfd, 0, 0, 1, 0)) {
+ *excl = 1;
+ } else {
+ OVERLAPPED ov;
+ memset(&ov, 0, sizeof(ov));
+ if (!LockFileEx(env->me_lfd, 0, 0, 1, 0, &ov)) {
+ rc = ErrCode();
+ goto fail;
+ }
+ }
+ }
+ size = GetFileSize(env->me_lfd, NULL);
+#else
if ((env->me_lfd = open(lpath, O_RDWR|O_CREAT, mode)) == -1) {
- rc = errno;
+ rc = ErrCode();
return rc;
}
/* Try to get exclusive lock. If we succeed, then
* nobody is using the lock region and we should initialize it.
*/
- memset((void *)&lock_info, 0, sizeof(lock_info));
- lock_info.l_type = F_WRLCK;
- lock_info.l_whence = SEEK_SET;
- lock_info.l_start = 0;
- lock_info.l_len = 1;
- rc = fcntl(env->me_lfd, F_SETLK, &lock_info);
- if (rc == 0) {
- *excl = 1;
- } else {
- lock_info.l_type = F_RDLCK;
+ {
+ struct flock lock_info;
+ memset((void *)&lock_info, 0, sizeof(lock_info));
+ lock_info.l_type = F_WRLCK;
+ lock_info.l_whence = SEEK_SET;
+ lock_info.l_start = 0;
+ lock_info.l_len = 1;
rc = fcntl(env->me_lfd, F_SETLK, &lock_info);
- if (rc) {
- rc = errno;
- goto fail;
+ if (rc == 0) {
+ *excl = 1;
+ } else {
+ lock_info.l_type = F_RDLCK;
+ rc = fcntl(env->me_lfd, F_SETLKW, &lock_info);
+ if (rc) {
+ rc = ErrCode();
+ goto fail;
+ }
}
}
size = lseek(env->me_lfd, 0, SEEK_END);
+#endif
rsize = (env->me_maxreaders-1) * sizeof(MDB_reader) + sizeof(MDB_txninfo);
if (size < rsize && *excl) {
+#ifdef _WIN32
+ SetFilePointer(env->me_lfd, rsize, NULL, 0);
+ if (!SetEndOfFile(env->me_lfd)) {
+ rc = ErrCode();
+ goto fail;
+ }
+#else
if (ftruncate(env->me_lfd, rsize) != 0) {
- rc = errno;
+ rc = ErrCode();
goto fail;
}
+#endif
} else {
rsize = size;
size = rsize - sizeof(MDB_txninfo);
env->me_maxreaders = size/sizeof(MDB_reader) + 1;
}
+#ifdef _WIN32
+ {
+ HANDLE mh;
+ mh = CreateFileMapping(env->me_lfd, NULL, PAGE_READWRITE,
+ 0, 0, NULL);
+ if (!mh) {
+ rc = ErrCode();
+ goto fail;
+ }
+ env->me_txns = MapViewOfFileEx(mh, FILE_MAP_WRITE, 0, 0, rsize, NULL);
+ CloseHandle(mh);
+ if (!env->me_txns) {
+ rc = ErrCode();
+ goto fail;
+ }
+ }
+#else
env->me_txns = mmap(0, rsize, PROT_READ|PROT_WRITE, MAP_SHARED,
env->me_lfd, 0);
if (env->me_txns == MAP_FAILED) {
- rc = errno;
+ rc = ErrCode();
goto fail;
}
+#endif
if (*excl) {
+#ifdef _WIN32
+ char *ptr;
+ if (!mdb_sec_inited) {
+ InitializeSecurityDescriptor(&mdb_null_sd,
+ SECURITY_DESCRIPTOR_REVISION);
+ SetSecurityDescriptorDacl(&mdb_null_sd, TRUE, 0, FALSE);
+ mdb_all_sa.nLength = sizeof(SECURITY_ATTRIBUTES);
+ mdb_all_sa.bInheritHandle = FALSE;
+ mdb_all_sa.lpSecurityDescriptor = &mdb_null_sd;
+ mdb_sec_inited = 1;
+ }
+ /* FIXME: only using up to 20 characters of the env path here,
+ * probably not enough to assure uniqueness...
+ */
+ sprintf(env->me_txns->mti_rmname, "Global\\MDBr%.20s", lpath);
+ ptr = env->me_txns->mti_rmname + sizeof("Global\\MDBr");
+ while ((ptr = strchr(ptr, '\\')))
+ *ptr++ = '/';
+ env->me_rmutex = CreateMutex(&mdb_all_sa, FALSE, env->me_txns->mti_rmname);
+ if (!env->me_rmutex) {
+ rc = ErrCode();
+ goto fail;
+ }
+ sprintf(env->me_txns->mti_rmname, "Global\\MDBw%.20s", lpath);
+ ptr = env->me_txns->mti_rmname + sizeof("Global\\MDBw");
+ while ((ptr = strchr(ptr, '\\')))
+ *ptr++ = '/';
+ env->me_wmutex = CreateMutex(&mdb_all_sa, FALSE, env->me_txns->mti_rmname);
+ if (!env->me_wmutex) {
+ rc = ErrCode();
+ goto fail;
+ }
+#else
pthread_mutexattr_t mattr;
pthread_mutexattr_init(&mattr);
}
pthread_mutex_init(&env->me_txns->mti_mutex, &mattr);
pthread_mutex_init(&env->me_txns->mti_wmutex, &mattr);
+#endif
env->me_txns->mti_version = MDB_VERSION;
env->me_txns->mti_magic = MDB_MAGIC;
env->me_txns->mti_txnid = 0;
rc = MDB_VERSION_MISMATCH;
goto fail;
}
- if (errno != EACCES && errno != EAGAIN) {
- rc = errno;
+ rc = ErrCode();
+ if (rc != EACCES && rc != EAGAIN) {
goto fail;
}
+#ifdef _WIN32
+ env->me_rmutex = OpenMutex(SYNCHRONIZE, FALSE, env->me_txns->mti_rmname);
+ if (!env->me_rmutex) {
+ rc = ErrCode();
+ goto fail;
+ }
+ env->me_wmutex = OpenMutex(SYNCHRONIZE, FALSE, env->me_txns->mti_wmname);
+ if (!env->me_wmutex) {
+ rc = ErrCode();
+ goto fail;
+ }
+#endif
}
return MDB_SUCCESS;
fail:
close(env->me_lfd);
- env->me_lfd = -1;
+ env->me_lfd = INVALID_HANDLE_VALUE;
return rc;
}
if (rc)
goto leave;
+#ifdef _WIN32
+ if (F_ISSET(flags, MDB_RDONLY)) {
+ oflags = GENERIC_READ;
+ len = OPEN_EXISTING;
+ } else {
+ oflags = GENERIC_READ|GENERIC_WRITE;
+ len = OPEN_ALWAYS;
+ }
+ mode = FILE_ATTRIBUTE_NORMAL;
+ if ((env->me_fd = CreateFile(dpath, oflags, FILE_SHARE_READ|FILE_SHARE_WRITE,
+ NULL, len, mode, NULL)) == INVALID_HANDLE_VALUE) {
+ rc = ErrCode();
+ goto leave;
+ }
+#else
if (F_ISSET(flags, MDB_RDONLY))
oflags = O_RDONLY;
else
oflags = O_RDWR | O_CREAT;
if ((env->me_fd = open(dpath, oflags, mode)) == -1) {
- rc = errno;
+ rc = ErrCode();
goto leave;
}
+#endif
if ((rc = mdb_env_open2(env, flags)) == MDB_SUCCESS) {
/* synchronous fd for meta writes */
+#ifdef _WIN32
+ if (!(flags & (MDB_RDONLY|MDB_NOSYNC)))
+ mode |= FILE_FLAG_WRITE_THROUGH;
+ if ((env->me_mfd = CreateFile(dpath, oflags, FILE_SHARE_READ|FILE_SHARE_WRITE,
+ NULL, len, mode, NULL)) == INVALID_HANDLE_VALUE) {
+ rc = ErrCode();
+ goto leave;
+ }
+#else
if (!(flags & (MDB_RDONLY|MDB_NOSYNC)))
oflags |= MDB_DSYNC;
if ((env->me_mfd = open(dpath, oflags, mode)) == -1) {
- rc = errno;
+ rc = ErrCode();
goto leave;
}
-
+#endif
env->me_path = strdup(path);
DPRINTF("opened dbenv %p", (void *) env);
pthread_key_create(&env->me_txkey, mdb_env_reader_dest);
leave:
if (rc) {
- if (env->me_fd >= 0) {
+ if (env->me_fd != INVALID_HANDLE_VALUE) {
close(env->me_fd);
- env->me_fd = -1;
+ env->me_fd = INVALID_HANDLE_VALUE;
}
- if (env->me_lfd >= 0) {
+ if (env->me_lfd != INVALID_HANDLE_VALUE) {
close(env->me_lfd);
- env->me_lfd = -1;
+ env->me_lfd = INVALID_HANDLE_VALUE;
}
}
free(lpath);
close(env->me_fd);
if (env->me_txns) {
pid_t pid = getpid();
- size_t size = (env->me_maxreaders-1) * sizeof(MDB_reader) + sizeof(MDB_txninfo);
unsigned int i;
for (i=0; i<env->me_txns->mti_numreaders; i++)
if (env->me_txns->mti_readers[i].mr_pid == pid)
env->me_txns->mti_readers[i].mr_pid = 0;
- munmap(env->me_txns, size);
+ munmap(env->me_txns, (env->me_maxreaders-1)*sizeof(MDB_reader)+sizeof(MDB_txninfo));
}
close(env->me_lfd);
free(env);
projects / openldap / commitdiff