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mdbx: drop mdbx_txn_trylock().

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This commit is contained in:
Leo Yuriev
2017-10-26 21:47:41 +03:00
parent 5e1721efdd
commit 0a7a290d06
4 changed files with 16 additions and 31 deletions
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19
src/lck-windows.c
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@@ -1,4 +1,4 @@
/*
/*
* Copyright 2015-2017 Leonid Yuriev <leo@yuriev.ru>
* and other libmdbx authors: please see AUTHORS file.
* All rights reserved.
@@ -126,20 +126,13 @@ static __inline BOOL funlock(mdbx_filehandle_t fd, uint64_t offset,
#define LCK_BODY LCK_BODY_OFFSET, LCK_BODY_LEN
#define LCK_WHOLE 0, LCK_MAXLEN
int mdbx_txn_lock(MDBX_env *env) {
if (flock(env->me_fd, LCK_EXCLUSIVE | LCK_WAITFOR, LCK_BODY))
return MDBX_SUCCESS;
return GetLastError();
}
int mdbx_txn_trylock(MDBX_env *env) {
if (flock(env->me_fd, LCK_EXCLUSIVE | LCK_DONTWAIT, LCK_BODY))
int mdbx_txn_lock(MDBX_env *env, bool dontwait) {
if (flock(env->me_fd, dontwait ? (LCK_EXCLUSIVE | LCK_DONTWAIT)
: (LCK_EXCLUSIVE | LCK_WAITFOR),
LCK_BODY))
return MDBX_SUCCESS;
int rc = GetLastError();
if (rc == ERROR_LOCK_VIOLATION) {
rc = MDBX_BUSY;
}
return rc;
return (!dontwait || rc != ERROR_LOCK_VIOLATION) ? rc : MDBX_BUSY;
}
void mdbx_txn_unlock(MDBX_env *env) {