Changeset 51940 in vbox for trunk/include/iprt

Timestamp:

Jul 8, 2014 5:45:51 PM (11 years ago)

Author:

vboxsync

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

94833

Message:

GMMR0: Switched from fast mutex to critical section for the giant GMMR0 lock to avoid running into unnecessary trouble with the windows driver verifier. Required making the critical section code compile and link in the ring-0 environment.

File:

• trunk/include/iprt/critsect.h (modified) (6 diffs)

trunk/include/iprt/critsect.h

@@ -108 +108 @@
  * might or might not require entering a critical section before access. */
 #define RTCRITSECT_FLAGS_NOP            UINT32_C(0x00000008)
+/** Indicates that this is a ring-0 critical section. */
+#define RTCRITSECT_FLAGS_RING0          UINT32_C(0x00000010)
 /** @} */
 
 
-#ifdef IN_RING3
+#if defined(IN_RING3) || defined(IN_RING0)
 
 /**
@@ -209 +211 @@
 RTDECL(int) RTCritSectTryEnterDebug(PRTCRITSECT pCritSect, RTHCUINTPTR uId, RT_SRC_POS_DECL);
 
+#ifdef IN_RING3 /* Crazy APIs: ring-3 only. */
+
 /**
  * Enter multiple critical sections.
@@ -248 +252 @@
 RTDECL(int) RTCritSectEnterMultipleDebug(size_t cCritSects, PRTCRITSECT *papCritSects, RTUINTPTR uId, RT_SRC_POS_DECL);
 
+#endif /* IN_RING3 */
+
 /**
  * Leave a critical section.
@@ -285 +291 @@
 }
 
-#endif /* IN_RING3 */
+#endif /* IN_RING3 || IN_RING0 */
 
 /**
@@ -455 +461 @@
 /** @} */
 
-#ifdef IN_RING3
+#if defined(IN_RING3) || defined(IN_RING0)
 
 /**
@@ -701 +707 @@
 RTDECL(uint32_t) RTCritSectRwGetReadCount(PRTCRITSECTRW pThis);
 
-#endif /* IN_RING3 */
+#endif /* IN_RING3 || IN_RING0 */
 
 /**