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This commit is contained in:
Patrick Pelissier committed 2017-03-05 22:37:00 +01:00
1 parent fd751d7d07
commit d6ee3c6329
1 file changed
+7 -1
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m-snapshot.h
+7 -1
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@@ -40,7 +40,7 @@
/* Define the oplist of a snapshot */ /* Define the oplist of a snapshot */
#define SNAPSHOT_OPLIST(...) \ #define SNAPSHOT_OPLIST(...) \
M_IF_NARGS_EQ1(__VA_ARGS__) \ M_IF_NARGS_EQ1(__VA_ARGS__) \
(SNAPSHOTI_OPLIST(__VA_ARGS__, M_DEFAULT_OPLIST ), \ (SNAPSHOTI_OPLIST(__VA_ARGS__, M_DEFAULT_OPLIST ), \
SNAPSHOTI_OPLIST(__VA_ARGS__ )) SNAPSHOTI_OPLIST(__VA_ARGS__ ))
/********************************** INTERNAL ************************************/ /********************************** INTERNAL ************************************/
@@ -57,6 +57,12 @@
,M_IF_METHOD(MOVE, oplist)(MOVE(M_C3(snapshot_, name, _move)),) \ ,M_IF_METHOD(MOVE, oplist)(MOVE(M_C3(snapshot_, name, _move)),) \
) )
/* Flag defining the atomic state of a snapshot:
* - r: Index of the read buffer Range [0..2]
* - w: Index of the write buffer Range [0..2]
* - f: Next index of the write buffer when a shot is taken Range [0..2]
* - b: Boolean indicating that the read buffer shall be updated
*/
#define SNAPSHOTI_FLAG(r, w, f, b) \ #define SNAPSHOTI_FLAG(r, w, f, b) \
( ( (r) << 4) | ((w) << 2) | ((f)) | ((b) << 6)) ( ( (r) << 4) | ((w) << 2) | ((f)) | ((b) << 6))
#define SNAPSHOTI_R(flags) \ #define SNAPSHOTI_R(flags) \