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Added boolean parameter to IsReadLocked() to specify when a write lock shall not be considered as read lock.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3653 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2003-06-25 00:00:34 +00:00
parent eba400a809
commit 86e8beea7d
2 changed files with 5 additions and 5 deletions
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src/kernel/core/disk_device_manager/RWLocker.cpp
+4 -4
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@@ -118,15 +118,15 @@ RWLocker::ReadUnlock()
// IsReadLocked // IsReadLocked
// //
// Returns whether or not the calling thread owns a read lock or even a // Returns whether or not the calling thread owns a read lock or, if
// write lock. // orWriteLock is true, at least a write lock.
bool bool
RWLocker::IsReadLocked() const RWLocker::IsReadLocked(bool orWriteLock) const
{ {
bool result = false; bool result = false;
if (_AcquireBenaphore(fLock) == B_OK) { if (_AcquireBenaphore(fLock) == B_OK) {
thread_id thread = find_thread(NULL); thread_id thread = find_thread(NULL);
result = (thread == fWriter || _IndexOf(thread) >= 0); result = ((orWriteLock && thread == fWriter) || _IndexOf(thread) >= 0);
_ReleaseBenaphore(fLock); _ReleaseBenaphore(fLock);
} }
return result; return result;
src/kernel/core/disk_device_manager/RWLocker.h
+1 -1
View File
@@ -83,7 +83,7 @@ class RWLocker {
bool ReadLock(); bool ReadLock();
status_t ReadLockWithTimeout(bigtime_t timeout); status_t ReadLockWithTimeout(bigtime_t timeout);
void ReadUnlock(); void ReadUnlock();
bool IsReadLocked() const; bool IsReadLocked(bool orWriteLock = true) const;
bool WriteLock(); bool WriteLock();
status_t WriteLockWithTimeout(bigtime_t timeout); status_t WriteLockWithTimeout(bigtime_t timeout);