Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

* Base class of InterruptsLocker was accidentially private.

Browse Source 
* Added class InterruptsSpinLocker, which disables interrupts and
  acquires a spinlock all in one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22086 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2007-08-28 02:23:11 +00:00
parent 5461952df6
commit be8990115c
1 changed files with 35 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
headers/private/kernel/util/AutoLock.h
View File

@ -83,7 +83,7 @@ public:
}; };
// InterruptsLocker // InterruptsLocker
class InterruptsLocker : AutoLocker<int, InterruptsLocking> { class InterruptsLocker : public AutoLocker<int, InterruptsLocking> {
public: public:
inline InterruptsLocker(bool alreadyLocked = false, inline InterruptsLocker(bool alreadyLocked = false,
bool lockIfNotLocked = true) bool lockIfNotLocked = true)
@ -114,6 +114,39 @@ public:
// SpinLocker // SpinLocker
typedef AutoLocker<spinlock, SpinLocking> SpinLocker; typedef AutoLocker<spinlock, SpinLocking> SpinLocker;
// InterruptsSpinLocking
class InterruptsSpinLocking {
public:
struct State {
State(spinlock* lock)
: lock(lock)
{
}
int state;
spinlock* lock;
};
inline bool Lock(spinlock* lockable)
{
fState = disable_interrupts();
acquire_spinlock(lockable);
return true;
}
inline void Unlock(spinlock* lockable)
{
release_spinlock(lockable);
restore_interrupts(fState);
}
private:
int fState;
};
// InterruptsSpinLocker
typedef AutoLocker<spinlock, InterruptsSpinLocking> InterruptsSpinLocker;
} // namespace BPrivate } // namespace BPrivate
using BPrivate::AutoLocker; using BPrivate::AutoLocker;
@ -122,5 +155,6 @@ using BPrivate::RecursiveLocker;
using BPrivate::BenaphoreLocker; using BPrivate::BenaphoreLocker;
using BPrivate::InterruptsLocker; using BPrivate::InterruptsLocker;
using BPrivate::SpinLocker; using BPrivate::SpinLocker;
using BPrivate::InterruptsSpinLocker;
#endif // KERNEL_UTIL_AUTO_LOCKER_H #endif // KERNEL_UTIL_AUTO_LOCKER_H