MFH: r278202,r278205-r278590

Sponsored by:	The FreeBSD Foundation

1 files changed, 14 insertions, 0 deletions

diff --git a/contrib/xz/src/liblzma/api/lzma/hardware.h b/contrib/xz/src/liblzma/api/lzma/hardware.h
index e7dd03c3e8dd..5321d9af8e46 100644
--- a/contrib/xz/src/liblzma/api/lzma/hardware.h
+++ b/contrib/xz/src/liblzma/api/lzma/hardware.h
@@ -48,3 +48,17 @@
  *              of RAM on the specific operating system.
  */
 extern LZMA_API(uint64_t) lzma_physmem(void) lzma_nothrow;
+
+
+/**
+ * \brief       Get the number of processor cores or threads
+ *
+ * This function may be useful when determining how many threads to use.
+ * If the hardware supports more than one thread per CPU core, the number
+ * of hardware threads is returned if that information is available.
+ *
+ * \brief       On success, the number of available CPU threads or cores is
+ *              returned. If this information isn't available or an error
+ *              occurs, zero is returned.
+ */
+extern LZMA_API(uint32_t) lzma_cputhreads(void) lzma_nothrow;