From 1b306f66bcd15e9bf6b27882e2daa6375ac4cd2e Mon Sep 17 00:00:00 2001
From: Yuri <yuri@rawbw.com>
Date: Wed, 14 Nov 2018 22:15:09 -0800
Subject: [PATCH] FreeBSD compatibility patch

---
 SimTKcommon/src/ParallelExecutor.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/SimTKcommon/src/ParallelExecutor.cpp b/SimTKcommon/src/ParallelExecutor.cpp
index 311712d32..fbd95cbcb 100644
--- a/SimTKcommon/src/ParallelExecutor.cpp
+++ b/SimTKcommon/src/ParallelExecutor.cpp
@@ -29,6 +29,11 @@
 #include <algorithm>
 #include <mutex>
 
+#if defined(__FreeBSD__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
 using namespace std;
 
 namespace SimTK {
@@ -187,6 +192,9 @@ void ParallelExecutor::execute(Task& task, int times) {
 #elif __linux__
    #include <dlfcn.h>
    #include <unistd.h>
+#elif __FreeBSD__
+   #include <dlfcn.h>
+   #include <unistd.h>
 #else
   #error "Architecture unsupported"
 #endif
@@ -210,6 +218,17 @@ int ParallelExecutor::getNumProcessors() {
     } else {
         return( (int)nProcessorsOnline );
     }
+#else
+#ifdef __FreeBSD__
+    int ncpu,retval;
+    size_t len = 4;
+
+    retval = sysctlbyname( "hw.ncpu", &ncpu, &len, NULL, 0 );
+    if( retval == 0 ) {
+       return (ncpu );
+    } else {
+       return(1);
+    }
 #else
     // Windows
 
@@ -227,6 +246,7 @@ int ParallelExecutor::getNumProcessors() {
     return(ncpu);
 #endif
 #endif
+#endif
 }
 
 bool ParallelExecutor::isWorkerThread() {