Fix line endings

[flightgear.git] / src / Main / bootstrap.cxx

diff --git a/src/Main/bootstrap.cxx b/src/Main/bootstrap.cxx
index 5f2b24a54f149ee568cdf07996e26e331dcd64a5..78f34101128a1c50e7e1d1b59560ba4f75e9efaa 100644 (file)
--- a/src/Main/bootstrap.cxx
+++ b/src/Main/bootstrap.cxx
@@ -30,6 +30,7 @@
 #  include <signal.h>
 #endif
 
+#include <errno.h>
 #include <stdlib.h>
 #include <stdio.h>
 
@@ -56,6 +57,10 @@ SG_USING_STD(endl);
 #  include <console.h>         // -dw- for command line dialog
 #endif
 
+char *homedir = ::getenv( "HOME" );
+char *hostname = ::getenv( "HOSTNAME" );
+bool free_hostname = false;
+
 // foreward declaration.
 void fgExitCleanup();
 
@@ -116,18 +121,16 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
 
 #if defined( sgi )
 #include <sys/fpu.h>
+#include <sys/sysmp.h>
+#include <unistd.h>
 
 /*
-    set the special "flush zero" bit (FS, bit 24) in the Control Status
-    Register of the FPU of R4k and beyond so that the result of any
-    underflowing operation will be clamped to zero, and no exception of
-    any kind will be generated on the CPU.  This has no effect on an
-    R3000.
-
-    the FS bit is inherited by processes fork()ed out of this one,
-    but it is not inherited across an exec().  so anytime you exec()
-    a process, you must re-set the FS bit in that process.
-  */
+ *  set the special "flush zero" bit (FS, bit 24) in the Control Status
+ *  Register of the FPU of R4k and beyond so that the result of any
+ *  underflowing operation will be clamped to zero, and no exception of
+ *  any kind will be generated on the CPU.  This has no effect on an
+ *  R3000.
+ */
 void flush_fpe(void)
 {
     union fpc_csr f;
@@ -151,6 +154,16 @@ int main ( int argc, char **argv ) {
 
 #if defined(sgi)
     flush_fpe();
+
+    // Bind all non-rendering threads to CPU1
+    // This will reduce the jitter caused by them to an absolute minimum,
+    // but it will only work with superuser authority.
+    if ( geteuid() == 0 )
+    {
+       sysmp(MP_CLOCK, 0);             // bind the timer only to CPU0
+       sysmp(MP_ISOLATE, 1 );          // Isolate CPU1
+       sysmp(MP_NONPREEMPTIVE, 1 );    // disable process time slicing on CPU1
+    }
 #endif
 
     // Enable floating-point exceptions for Windows
@@ -187,11 +200,14 @@ int main ( int argc, char **argv ) {
                             // We must use cerr rather than
                             // logging, since logging may be
                             // disabled.
-        cerr << "Fatal error: " << t.getFormattedMessage()
-             << "\n (received from " << t.getOrigin() << ')' << endl;
+        cerr << "Fatal error: " << t.getFormattedMessage() << endl;
+        if (!t.getOrigin().empty())
+            cerr << " (received from " << t.getOrigin() << ')' << endl;
+
     } catch (...) {
         cerr << "Unknown exception in the main loop. Aborting..." << endl;
-        perror("Possible cause");
+        if (errno)
+            perror("Possible cause");
     }
 
     return 0;
@@ -204,7 +220,9 @@ void fgExitCleanup() {
     if (_bootstrap_OSInit != 0)
         fgSetMouseCursor(MOUSE_CURSOR_POINTER);
 
-    if (globals)
-        delete globals;
+    delete globals;
+
+    if (free_hostname && hostname != NULL)
+        free(hostname);
 }