+#elif GTEST_OS_DRAGONFLY || GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD || \
+ GTEST_OS_NETBSD
+
+#if GTEST_OS_NETBSD
+#undef KERN_PROC
+#define KERN_PROC KERN_PROC2
+#define kinfo_proc kinfo_proc2
+#endif
+
+#if GTEST_OS_DRAGONFLY
+#define KP_NLWP(kp) (kp.kp_nthreads)
+#elif GTEST_OS_FREEBSD || GTEST_OS_GNU_KFREEBSD
+#define KP_NLWP(kp) (kp.ki_numthreads)
+#elif GTEST_OS_NETBSD
+#define KP_NLWP(kp) (kp.p_nlwps)
+#endif
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+ int mib[] = {
+ CTL_KERN,
+ KERN_PROC,
+ KERN_PROC_PID,
+ getpid(),
+#if GTEST_OS_NETBSD
+ sizeof(struct kinfo_proc),
+ 1,
+#endif
+ };
+ u_int miblen = sizeof(mib) / sizeof(mib[0]);
+ struct kinfo_proc info;
+ size_t size = sizeof(info);
+ if (sysctl(mib, miblen, &info, &size, NULL, 0)) {
+ return 0;
+ }
+ return static_cast<size_t>(KP_NLWP(info));
+}
+#elif GTEST_OS_OPENBSD
+
+// Returns the number of threads running in the process, or 0 to indicate that
+// we cannot detect it.
+size_t GetThreadCount() {
+ int mib[] = {
+ CTL_KERN,
+ KERN_PROC,
+ KERN_PROC_PID | KERN_PROC_SHOW_THREADS,
+ getpid(),
+ sizeof(struct kinfo_proc),
+ 0,
+ };
+ u_int miblen = sizeof(mib) / sizeof(mib[0]);
+
+ // get number of structs
+ size_t size;
+ if (sysctl(mib, miblen, NULL, &size, NULL, 0)) {
+ return 0;
+ }
+ mib[5] = size / mib[4];
+
+ // populate array of structs
+ struct kinfo_proc info[mib[5]];
+ if (sysctl(mib, miblen, &info, &size, NULL, 0)) {
+ return 0;
+ }
+
+ // exclude empty members
+ int nthreads = 0;
+ for (int i = 0; i < size / mib[4]; i++) {
+ if (info[i].p_tid != -1)
+ nthreads++;
+ }
+ return nthreads;
+}
+