diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-07-23 11:24:09 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-07-23 11:24:09 +0000 |
commit | e36b37583bebd229102f46c4ed7d2f6fad8697d4 (patch) | |
tree | 73937b6f051fcaaa1ccbdfbaa9f3a1f36bbedb9e /regressions/ck_spinlock/linux_spinlock.h | |
parent | Initial commit. (diff) | |
download | ck-e36b37583bebd229102f46c4ed7d2f6fad8697d4.tar.xz ck-e36b37583bebd229102f46c4ed7d2f6fad8697d4.zip |
Adding upstream version 0.6.0.upstream/0.6.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'regressions/ck_spinlock/linux_spinlock.h')
-rw-r--r-- | regressions/ck_spinlock/linux_spinlock.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/regressions/ck_spinlock/linux_spinlock.h b/regressions/ck_spinlock/linux_spinlock.h new file mode 100644 index 0000000..5fe1f3e --- /dev/null +++ b/regressions/ck_spinlock/linux_spinlock.h @@ -0,0 +1,39 @@ +#include <ck_cc.h> + +CK_CC_INLINE static void +spin_lock(volatile unsigned int *lock) +{ +#ifdef __x86_64__ + __asm__ __volatile__( + "\n1:\t" + "lock ; decl %0\n\t" + "jns 2f\n" + "3:\n" + "rep;nop\n\t" + "cmpl $0,%0\n\t" + "jle 3b\n\t" + "jmp 1b\n" + "2:\t" : "=m" (*lock) : : "memory"); +#else + *lock = 1; +#endif + + return; +} + +CK_CC_INLINE static void +spin_unlock(volatile unsigned int *lock) +{ +#ifdef __x86_64__ + __asm__ __volatile__("movl $1,%0" :"=m" (*lock) :: "memory"); +#else + *lock = 0; + return; +#endif +} + +#define LOCK_NAME "linux_spinlock" +#define LOCK_DEFINE volatile unsigned int lock = 1 +#define LOCK spin_lock(&lock) +#define UNLOCK spin_unlock(&lock) + |