diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-07-19 17:37:07 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-07-19 17:37:07 +0000 |
| commit | 1ea5ca46c7eefe66a01cb4db3b72fc0e5a04e2cb (patch) | |
| tree | 11db61e6d73e5a6b0bca974e7e4a8e29f1344a49 /MdePkg/Library/BaseLib/Synchronization.c | |
| parent | ebfe209ec07c4105baba33576457a4bd6c798a2b (diff) | |
| download | edk2-platforms-1ea5ca46c7eefe66a01cb4db3b72fc0e5a04e2cb.tar.xz | |
1. added functions header for BaseUefiDecompressLi
2. added some internal functions header for BaseLib
3. added EFIAPI for some internal assembly files declare
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1050 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/Synchronization.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/Synchronization.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Synchronization.c b/MdePkg/Library/BaseLib/Synchronization.c index 0d51956d74..cf001ce4d1 100644 --- a/MdePkg/Library/BaseLib/Synchronization.c +++ b/MdePkg/Library/BaseLib/Synchronization.c @@ -17,18 +17,61 @@ #define SPIN_LOCK_RELEASED ((SPIN_LOCK)1)
#define SPIN_LOCK_ACQUIRED ((SPIN_LOCK)2)
+/**
+ Performs an atomic increment of an 32-bit unsigned integer.
+
+ Performs an atomic increment of the 32-bit unsigned integer specified by
+ Value and returns the incremented value. The increment operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to increment.
+
+ @return The incremented value.
+
+**/
UINT32
EFIAPI
InternalSyncIncrement (
IN volatile UINT32 *Value
);
+/**
+ Performs an atomic decrement of an 32-bit unsigned integer.
+
+ Performs an atomic decrement of the 32-bit unsigned integer specified by
+ Value and returns the decrement value. The decrement operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to decrement.
+
+ @return The decrement value.
+
+**/
UINT32
EFIAPI
InternalSyncDecrement (
IN volatile UINT32 *Value
);
+/**
+ Performs an atomic compare exchange operation on a 32-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 32-bit unsigned integer
+ specified by Value. If Value is equal to CompareValue, then Value is set to
+ ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
+ then Value is returned. The compare exchange operation must be performed using
+ MP safe mechanisms.
+
+ @param Value A pointer to the 32-bit value for the compare exchange
+ operation.
+ @param CompareValue 32-bit value used in compare operation.
+ @param ExchangeValue 32-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
UINT32
EFIAPI
InternalSyncCompareExchange32 (
@@ -37,6 +80,22 @@ InternalSyncCompareExchange32 ( IN UINT32 ExchangeValue
);
+/**
+ Performs an atomic compare exchange operation on a 64-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
+ by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
+ CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
+ The compare exchange operation must be performed using MP safe mechanisms.
+
+ @param Value A pointer to the 64-bit value for the compare exchange
+ operation.
+ @param CompareValue 64-bit value used in compare operation.
+ @param ExchangeValue 64-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
UINT64
EFIAPI
InternalSyncCompareExchange64 (
@@ -267,6 +326,14 @@ InterlockedDecrement ( /**
Performs an atomic compare exchange operation on a 32-bit unsigned integer.
+ Performs an atomic compare exchange operation on the 32-bit unsigned integer
+ specified by Value. If Value is equal to CompareValue, then Value is set to
+ ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
+ then Value is returned. The compare exchange operation must be performed using
+ MP safe mechanisms.
+
+ If Value is NULL, then ASSERT().
+
@param Value A pointer to the 32-bit value for the compare exchange
operation.
@param CompareValue 32-bit value used in compare operation.
@@ -290,6 +357,13 @@ InterlockedCompareExchange32 ( /**
Performs an atomic compare exchange operation on a 64-bit unsigned integer.
+ Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
+ by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
+ CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
+ The compare exchange operation must be performed using MP safe mechanisms.
+
+ If Value is NULL, then ASSERT().
+
@param Value A pointer to the 64-bit value for the compare exchange
operation.
@param CompareValue 64-bit value used in compare operation.
|