Changeset 37419 in vbox for trunk/include/iprt

Timestamp:

Jun 11, 2011 8:25:37 PM (14 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

72218

Message:

PDM/IPRT CritSect: Introduced the NOP critical section for simplifying locking in IOM and TM. (Revisiting device emulation locking, making it more fine grained over time.)

File:

• trunk/include/iprt/critsect.h (modified) (1 diff)

trunk/include/iprt/critsect.h

@@ -102 +102 @@
 /** Bootstrap hack for use with certain memory allocator locks only! */
 #define RTCRITSECT_FLAGS_BOOTSTRAP_HACK UINT32_C(0x00000004)
+/** If set, the critical section becomes a dummy that doesn't serialize any
+ * threads.  This flag can only be set at creation time.
+ *
+ * The intended use is avoiding lots of conditional code where some component
+ * might or might not require entering a critical section before access. */
+#define RTCRITSECT_FLAGS_NOP            UINT32_C(0x00000008)
 /** @} */