//
// Written by Curtis Olson, started May 1997.
//
-// Copyright (C) 1997 - 2002 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1997 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
# include <config.h>
#endif
-#if defined(__linux__) && defined(__i386__)
+#if defined(HAVE_FEENABLEEXCEPT)
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <fenv.h>
+#elif defined(__linux__) && defined(__i386__)
# include <fpu_control.h>
-# include <signal.h>
#endif
+#include <errno.h>
+#include <signal.h>
#include <stdlib.h>
+#include <stdio.h>
#include <simgear/compiler.h>
#include <simgear/structure/exception.hxx>
#include <simgear/debug/logstream.hxx>
-#include STL_IOSTREAM
-SG_USING_STD(cerr);
-SG_USING_STD(endl);
+#include <cstring>
+#include <iostream>
+using std::cerr;
+using std::endl;
#include "main.hxx"
+#include "globals.hxx"
-#ifdef HAVE_WINDOWS_H
-# include <windows.h>
-# include <float.h>
-#endif
-
#include "fg_os.hxx"
-#ifdef macintosh
-# 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();
-#if defined(__linux__) && defined(__i386__)
+static bool fpeAbort = false;
+static void handleFPE(int);
+static void initFPE();
-static void handleFPE (int);
+#if defined(HAVE_FEENABLEEXCEPT)
+static void
+initFPE ()
+{
+ if (fpeAbort) {
+ int except = fegetexcept();
+ feenableexcept(except | FE_DIVBYZERO | FE_INVALID);
+ } else {
+ signal(SIGFPE, handleFPE);
+ }
+}
+
+static void handleFPE(int)
+{
+ feclearexcept(FE_ALL_EXCEPT);
+ signal(SIGFPE, handleFPE);
+}
+#elif defined(__linux__) && defined(__i386__)
static void
initFPE ()
initFPE();
SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
}
-#endif
-
-#ifdef __APPLE__
-
-typedef struct
+#else
+static void handleFPE(int)
{
- int lo;
- int hi;
-} PSN;
-
-extern "C" {
- short CPSGetCurrentProcess(PSN *psn);
- short CPSSetProcessName (PSN *psn, char *processname);
- short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
- short CPSSetFrontProcess(PSN *psn);
-};
-
-#define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
+}
+static void initFPE()
+{
+}
#endif
#ifdef _MSC_VER
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow) {
+ logbuf::has_no_console();
main( __argc, __argv );
}
#endif
#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;
}
#endif
+static void fg_terminate() {
+ cerr << endl <<
+ "Uncaught Exception: you should see a meaningful error message\n"
+ "here, but your GLUT (or SDL) library was apparently compiled\n"
+ "and/or linked without exception support. Please complain to\n"
+ "its provider!"
+ << endl << endl;
+ abort();
+}
+
+int _bootstrap_OSInit;
+
// Main entry point; catch any exceptions that have made it this far.
int main ( int argc, char **argv ) {
- // Enable floating-point exceptions for Linux/x86
-#if defined(__linux__) && defined(__i386__)
+#ifdef PTW32_STATIC_LIB
+ // Initialise static pthread win32 lib
+ pthread_win32_process_attach_np ();
+#endif
+ _bootstrap_OSInit = 0;
+
+#if defined(__FreeBSD__)
+ // Ignore floating-point exceptions on FreeBSD
+ signal(SIGFPE, SIG_IGN);
+#else
+ // Maybe Enable floating-point exceptions on Linux
+ for (int i = 0; i < argc; ++i) {
+ if (!strcmp("--enable-fpe", argv[i])) {
+ fpeAbort = true;
+ break;
+ }
+ }
initFPE();
#endif
+#if !defined( _MSC_VER ) && !defined( __MINGW32__ )
+ signal(SIGPIPE, SIG_IGN);
+#endif
#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
_control87(MCW_EM, MCW_EM); /* defined in float.h */
#endif
- // Keyboard focus hack
-#if defined(__APPLE__) && !defined(OSX_BUNDLE)
- {
- PSN psn;
-
- fgOSInit (&argc, argv);
-
- CPSGetCurrentProcess(&psn);
- CPSSetProcessName(&psn, "FlightGear");
- CPSEnableFG(&psn);
- CPSSetFrontProcess(&psn);
- }
-#endif
-
// FIXME: add other, more specific
// exceptions.
try {
+ std::set_terminate(fg_terminate);
+ atexit(fgExitCleanup);
fgMainInit(argc, argv);
- } catch (sg_throwable &t) {
+ } catch (const sg_throwable &t) {
// We must use cerr rather than
// logging, since logging may be
// disabled.
- cerr << "Fatal error: " << t.getFormattedMessage()
- << "\n (received from " << t.getOrigin() << ')' << endl;
- exit(1);
+ cerr << "Fatal error: " << t.getFormattedMessage() << endl;
+ if (std::strlen(t.getOrigin()) != 0)
+ cerr << " (received from " << t.getOrigin() << ')' << endl;
+
+ } catch (const string &s) {
+ cerr << "Fatal error: " << s << endl;
+
+ } catch (const char *s) {
+ cerr << "Fatal error: " << s << endl;
+
+ } catch (...) {
+ cerr << "Unknown exception in the main loop. Aborting..." << endl;
+ if (errno)
+ perror("Possible cause");
}
return 0;
}
+// do some clean up on exit. Specifically we want to call alutExit()
+// which happens in the sound manager destructor.
+void fgExitCleanup() {
+
+ if (_bootstrap_OSInit != 0)
+ fgSetMouseCursor(MOUSE_CURSOR_POINTER);
+
+ delete globals;
+
+ if (free_hostname && hostname != NULL)
+ free(hostname);
+}
projects / flightgear.git / blobdiff