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-rw-r--r--llvm/lib/Support/Unix/Threading.inc9
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/Support/Unix/Threading.inc b/llvm/lib/Support/Unix/Threading.inc
index 2d0aaca..667d023 100644
--- a/llvm/lib/Support/Unix/Threading.inc
+++ b/llvm/lib/Support/Unix/Threading.inc
@@ -28,6 +28,7 @@
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <errno.h>
+#include <sys/cpuset.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#include <unistd.h>
@@ -282,7 +283,13 @@ SetThreadPriorityResult llvm::set_thread_priority(ThreadPriority Priority) {
#include <thread>
int computeHostNumHardwareThreads() {
-#ifdef __linux__
+#if defined(__FreeBSD__)
+ cpuset_t mask;
+ CPU_ZERO(&mask);
+ if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(mask),
+ &mask) == 0)
+ return CPU_COUNT(&mask);
+#elif defined(__linux__)
cpu_set_t Set;
if (sched_getaffinity(0, sizeof(Set), &Set) == 0)
return CPU_COUNT(&Set);