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author | Jakob Odersky <jodersky@gmail.com> | 2014-04-08 13:18:27 +0200 |
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committer | Jakob Odersky <jodersky@gmail.com> | 2014-04-08 14:57:10 +0200 |
commit | 350437ef4b8ba0811d285f7454d2b54ffce6b029 (patch) | |
tree | 5084c73adbb4cc3aee9d000b3816d98a57203f36 /kernel/include/mux/lock.h | |
parent | c4ebb91caf33ecf5a47785584a4231eb1e4dfa2a (diff) | |
download | mux-350437ef4b8ba0811d285f7454d2b54ffce6b029.tar.gz mux-350437ef4b8ba0811d285f7454d2b54ffce6b029.tar.bz2 mux-350437ef4b8ba0811d285f7454d2b54ffce6b029.zip |
change build structure
Diffstat (limited to 'kernel/include/mux/lock.h')
-rw-r--r-- | kernel/include/mux/lock.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/kernel/include/mux/lock.h b/kernel/include/mux/lock.h new file mode 100644 index 0000000..b5ac4d9 --- /dev/null +++ b/kernel/include/mux/lock.h @@ -0,0 +1,24 @@ +#ifndef MUX_LOCK_H +#define MUX_LOCK_H + +#include "mux/sched.h" + +typedef volatile char spin_lock_t; + +#define SPIN_LOCK_UNLOCKED 0 +#define SPIN_LOCK_LOCKED 0 + +static inline void spin_lock(spin_lock_t* lock) { + while(*lock != SPIN_LOCK_UNLOCKED) {yield();}; + cli(); + *lock = SPIN_LOCK_LOCKED; + sei(); +} + +static inline void spin_unlock(spin_lock_t* lock) { + cli(); + *lock = SPIN_LOCK_UNLOCKED; + sei(); +} + +#endif
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