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kernel: atomic_*() functions rework

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* No need for the atomically changed variables to be declared as
   volatile.
 * Drop support for atomically getting and setting unaligned data.
 * Introduce atomic_get_and_set[64]() which works the same as
   atomic_set[64]() used to. atomic_set[64]() does not return the
   previous value anymore.
This commit is contained in:
Pawel Dziepak
2013-11-05 22:32:59 +01:00
parent e7dba861fd
commit 077c84eb27
47 changed files with 360 additions and 253 deletions
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headers/build/HaikuBuildCompatibility.h
+11 -9
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@@ -118,17 +118,19 @@ struct media_node;
extern "C" {
#endif
extern int32 atomic_set(vint32 *value, int32 newValue);
extern int32 atomic_test_and_set(vint32 *value, int32 newValue,
extern void atomic_set(int32* value, int32 newValue);
extern int32 atomic_get_and_set(int32* value, int32 newValue);
extern int32 atomic_test_and_set(int32 *value, int32 newValue,
int32 testAgainst);
extern int32 atomic_get(vint32 *value);
extern int64 atomic_set64(vint64 *value, int64 newValue);
extern int64 atomic_test_and_set64(vint64 *value, int64 newValue,
extern int32 atomic_get(int32 *value);
extern void atomic_set64(int64* value, int64 newValue);
extern int64 atomic_get_and_set64(int64* value, int64 newValue);
extern int64 atomic_test_and_set64(int64 *value, int64 newValue,
int64 testAgainst);
extern int64 atomic_get64(vint64 *value);
extern int64 atomic_add64(vint64 *value, int64 addValue);
extern int64 atomic_and64(vint64 *value, int64 andValue);
extern int64 atomic_or64(vint64 *value, int64 orValue);
extern int64 atomic_get64(int64 *value);
extern int64 atomic_add64(int64 *value, int64 addValue);
extern int64 atomic_and64(int64 *value, int64 andValue);
extern int64 atomic_or64(int64 *value, int64 orValue);
extern size_t strnlen(const char *string, size_t count);