i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

kernel: atomic_*() functions rework

Browse Source 
* 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
Download Patch File Download Diff File Expand all files Collapse all files
headers/private/kernel/util/atomic.h
+20 -7
View File
@@ -18,22 +18,34 @@ atomic_pointer_test_and_set(PointerType** _pointer, const PointerType* set,
const PointerType* test)
{
#if LONG_MAX == INT_MAX
return (PointerType*)atomic_test_and_set((vint32*)_pointer, (int32)set,
return (PointerType*)atomic_test_and_set((int32*)_pointer, (int32)set,
(int32)test);
#else
return (PointerType*)atomic_test_and_set64((vint64*)_pointer, (int64)set,
return (PointerType*)atomic_test_and_set64((int64*)_pointer, (int64)set,
(int64)test);
#endif
}
template<typename PointerType> PointerType*
atomic_pointer_set(PointerType** _pointer, const PointerType* set)
atomic_pointer_get_and_set(PointerType** _pointer, const PointerType* set)
{
#if LONG_MAX == INT_MAX
return (PointerType*)atomic_set((vint32*)_pointer, (int32)set);
return (PointerType*)atomic_get_and_set((int32*)_pointer, (int32)set);
#else
return (PointerType*)atomic_set64((vint64*)_pointer, (int64)set);
return (PointerType*)atomic_get_and_set64((int64*)_pointer, (int64)set);
#endif
}
template<typename PointerType> void
atomic_pointer_set(PointerType** _pointer, const PointerType* set)
{
ASSERT((addr_t(_pointer) & (sizeof(PointerType*) - 1)) == 0);
#if LONG_MAX == INT_MAX
atomic_set((int32*)_pointer, (int32)set);
#else
atomic_set64((int64*)_pointer, (int64)set);
#endif
}
@@ -41,10 +53,11 @@ atomic_pointer_set(PointerType** _pointer, const PointerType* set)
template<typename PointerType> PointerType*
atomic_pointer_get(PointerType** _pointer)
{
ASSERT((addr_t(_pointer) & (sizeof(PointerType*) - 1)) == 0);
#if LONG_MAX == INT_MAX
return (PointerType*)atomic_get((vint32*)_pointer);
return (PointerType*)atomic_get((int32*)_pointer);
#else
return (PointerType*)atomic_get64((vint64*)_pointer);
return (PointerType*)atomic_get64((int64*)_pointer);
#endif
}