diff options
| -rw-r--r-- | ace/OS.cpp | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/ace/OS.cpp b/ace/OS.cpp index c7a7b719d20..210e58b88b6 100644 --- a/ace/OS.cpp +++ b/ace/OS.cpp @@ -1355,6 +1355,55 @@ ACE_OS::socket_fini (void) #if defined (VXWORKS) int sys_nerr = ERRMAX + 1; +#include <usrLib.h> // for ::sp() + +// This global function can be used from the VxWorks shell to +// pass arguments to a C main () function. +// usage: -> spa main, "arg1", "arg2" +// All arguments must be quoted, even numbers. +int +spa (FUNCPTR entry, ...) +{ + static const unsigned int MAX_ARGS = 10; + static char *argv[MAX_ARGS]; + va_list pvar; + int argc; + + // Hardcode a program name because the real one isn't available + // through the VxWorks shell. + argv[0] = "spa ():t"; + + // Peel off arguments to spa () and put into argv. va_arg () + // isn't necessarily supposed to return 0 when done, though + // since the VxWorks shell uses a fixed number (10) of arguments, + // it might 0 the unused ones. + // This function could be used to increase that limit, but then + // it couldn't depend on the trailing 0. So, the number of arguments + // would have to be passed. + va_start (pvar, entry); + for (argc = 1; argc <= MAX_ARGS; ++argc) + { + argv[argc] = va_arg (pvar, char *); + if (argv[argc] == 0) + break; + } + + if (argc > MAX_ARGS && argv[argc-1] != 0) + { + // try to read another arg, and warn user if the limit was exceeded + if (va_arg (pvar, char *) != 0) + fprintf (stderr, "spa(): number of arguments limited to %d\n", + MAX_ARGS); + } + + int ret = ::sp (entry, argc, (int) argv, 0, 0, 0, 0, 0, 0, 0); + va_end (pvar); + + // ::sp () returns the taskID on success: return 0 instead + // if successful + return ret > 0 ? 0 : ret; +} + #endif /* VXWORKS */ #if !defined (ACE_HAS_SIGINFO_T) |