Two closely-related new features:
property: /sim/pid
option: --pid=/pathto/some/file.pid
Having the pid available is useful for many purposes,
including sending a signal for debugging.
Somebody should please check that this works under MSVC.
It looks to me like pretty standard c++ but it's still
good to check.........
commit cc188f7499c03417b1d4a3cb296702ba7b4d67fa
Author: John Denker <j...@av8n.com>
Date: Fri Feb 5 10:12:15 2010 -0700
Write pid into property tree and optionally into a file.
diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index d5ac553..38202e4 100644
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -885,6 +885,7 @@ bool fgMainInit( int argc, char **argv ) {
upper_case_property("/sim/presets/runway");
upper_case_property("/sim/tower/airport-id");
upper_case_property("/autopilot/route-manager/input");
+ fgSetInt ("/sim/pid", getpid() );
// Scan the config file(s) and command line options to see if
// fg_root was specified (ignore all other options for now)
diff --git a/src/Main/options.cxx b/src/Main/options.cxx
index 3b4354f..9eb41b5 100644
--- a/src/Main/options.cxx
+++ b/src/Main/options.cxx
@@ -39,6 +39,7 @@
#include <string.h> // strcmp()
#include <algorithm>
+#include <fstream> /* ofstream */
#include <iostream>
#include <string>
@@ -1234,7 +1235,20 @@ fgOptFgviewer(const char* arg)
return FG_OPTIONS_OK;
}
-
+static int
+fgOptPid(const char* arg)
+{
+ pid_t pid = getpid();
+ ofstream out;
+ out.open(arg, ofstream::out);
+ out << pid << endl;
+ out.close();
+ if (!out.good()) {
+ SG_LOG(SG_GENERAL, SG_ALERT,
+ "Unable to write pid (" << pid
+ << ") to file '" << arg << "'");
+ }
+}
static map<string,size_t> fgOptionMap;
@@ -1449,6 +1463,7 @@ struct OptionDesc {
{"version", false, OPTION_FUNC, "", false, "",
fgOptVersion },
{"enable-fpe", false, OPTION_FUNC, "", false, "",
fgOptFpe},
{"fgviewer", false, OPTION_FUNC, "", false, "",
fgOptFgviewer},
+ {"pid", true, OPTION_FUNC, "", false, "",
fgOptPid },
{0}
};
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