73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
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/*
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* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _USERLAND_FS_RECURSIVE_LOCK_H
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#define _USERLAND_FS_RECURSIVE_LOCK_H
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#include <lock.h> // private/kernel
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namespace UserlandFSUtil {
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class RecursiveLock {
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public:
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RecursiveLock(bool benaphore_style = true)
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{
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recursive_lock_init(&fLock, "anonymous locker");
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}
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RecursiveLock(const char *name, bool benaphore_style = true)
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{
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recursive_lock_init_etc(&fLock, name, MUTEX_FLAG_CLONE_NAME);
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}
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~RecursiveLock()
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{
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recursive_lock_destroy(&fLock);
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}
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status_t InitCheck() const
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{
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return B_OK;
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}
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bool Lock(void)
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{
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return recursive_lock_lock(&fLock) == B_OK;
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}
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void Unlock(void)
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{
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recursive_lock_unlock(&fLock);
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}
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thread_id LockingThread(void) const
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{
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return RECURSIVE_LOCK_HOLDER(&fLock);
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}
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bool IsLocked(void) const
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{
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return RECURSIVE_LOCK_HOLDER(&fLock) == find_thread(NULL);
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}
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int32 CountLocks(void) const
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{
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int32 count = recursive_lock_get_recursion(
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const_cast<recursive_lock*>(&fLock));
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return count >= 0 ? count : 0;
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}
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private:
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recursive_lock fLock;
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};
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}; // namespace UserlandFSUtil
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using UserlandFSUtil::RecursiveLock;
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#endif // _USERLAND_FS_RECURSIVE_LOCK_H
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