VBox

Timestamp:

Nov 20, 2008 5:23:43 PM (16 years ago)

Author:

vboxsync

Message:

when building against glibc 2.6, use the Posix implementation of the event mutexes as the glibc futex bug is fixed there

Location:

trunk/src/VBox/Runtime

Files:

trunk/src/VBox/Runtime/Makefile.kmk

-              r14423
+              r14429
         r3/linux/semevent-linux.cpp \
         r3/linux/semeventmulti-linux.cpp
+# with glibc >= 2.6 we use the libc implementation
+r3/linux/semevent-linux.cpp_INCS = .
+r3/linux/semeventmulti-linux.cpp_INCS = .
 ifdef RT_NEW_LINUX_MUTEX_CODE
  RuntimeR3_SOURCES.linux.amd64 += \

-              r14412
+              r14429
  */
+#include <features.h>
+#if __GLIBC_PREREQ(2,6)
+/* glibc 2.6 fixed a serious bug in the mutex implementation
+ * The external refernce to epoll_pwait is a hack which prevents
+ * that we link against glibc < 2.6 */
+asm volatile (".global epoll_pwait");
+#include "r3/posix/semevent-posix.cpp"
+#else /* glibc < 2.6 */
 /*******************************************************************************
 *   Header Files                                                               *
 …
+}
+#endif /* glibc < 2.6 */

-              r8707
+              r14429
  * additional information or have any questions.
  */
+#include <features.h>
+#if __GLIBC_PREREQ(2,6)
+/* glibc 2.6 fixed a serious bug in the mutex implementation.
+ * The external refernce to epoll_pwait is a hack which prevents
+ * that we link against glibc < 2.6 */
+asm volatile (".global epoll_pwait");
+#include "r3/posix/semeventmulti-posix.cpp"
+#else /* glibc < 2.6 */
 /*******************************************************************************
 …
+}
+#endif /* glibc < 2.6 */

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