Convert VG_(exitcode), a global variable, into a local variable.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2436

coregrind/vg_include.h

@@ -980,7 +980,7 @@ typedef
 
 
 /* The scheduler. */
-extern VgSchedReturnCode VG_(scheduler) ( void );
+extern VgSchedReturnCode VG_(scheduler) ( Int* exit_code );
 
 extern void VG_(scheduler_init) ( void );
 
@@ -1474,11 +1474,6 @@ extern UInt VG_(dispatch_ctr);
 /* This is the ThreadId of the last thread the scheduler ran. */
 extern ThreadId VG_(last_run_tid);
 
-/* This is the argument to __NR_exit() supplied by the first thread to
-   call that syscall.  We eventually pass that to __NR_exit() for
-   real. */
-extern Int VG_(exitcode);
-
 /* If we're doing the default action of a fatal signal */
 extern jmp_buf VG_(fatal_signal_jmpbuf);
 extern Bool    VG_(fatal_signal_set);		/* jmp_buf is valid */

coregrind/vg_main.c

@@ -179,11 +179,6 @@ ThreadId VG_(last_run_tid) = 0;
    descriptor or a socket descriptor. */
 Bool VG_(logging_to_filedes) = True;
 
-/* This is the argument to __NR_exit() supplied by the first thread to
-   call that syscall.  We eventually pass that to __NR_exit() for
-   real. */
-Int VG_(exitcode) = 0;
-
 
 /*====================================================================*/
 /*=== Counters, for profiling purposes only                        ===*/
@@ -2633,6 +2628,7 @@ int main(int argc, char **argv)
    Addr esp_at_startup;    /* client's %esp at the point we gained control. */
    UInt * client_auxv;
    VgSchedReturnCode src;
+   Int exitcode = 0;
    vki_rlimit zero = { 0, 0 };
 
    //============================================================
@@ -2976,7 +2972,7 @@ int main(int argc, char **argv)
 
    if (__builtin_setjmp(&VG_(fatal_signal_jmpbuf)) == 0) {
       VG_(fatal_signal_set) = True;
-      src = VG_(scheduler)();
+      src = VG_(scheduler)( &exitcode );
    } else
       src = VgSrc_FatalSig;
 
@@ -3003,7 +2999,7 @@ int main(int argc, char **argv)
    if (VG_(needs).core_errors || VG_(needs).skin_errors)
       VG_(show_all_errors)();
 
-   SK_(fini)( VG_(exitcode) );
+   SK_(fini)( exitcode );
 
    VG_(do_sanity_checks)( True /*include expensive checks*/ );
 
@@ -3045,7 +3041,7 @@ int main(int argc, char **argv)
          /* The thread's %EBX at the time it did __NR_exit() will hold
             the arg to __NR_exit(), so we just do __NR_exit() with
             that arg. */
-         VG_(exit)( VG_(exitcode) );
+         VG_(exit)( exitcode );
          /* NOT ALIVE HERE! */
          VG_(core_panic)("entered the afterlife in main() -- ExitSyscall");
          break; /* what the hell :) */

coregrind/vg_scheduler.c

@@ -876,7 +876,7 @@ void idle ( void )
    * One thread asks to shutdown Valgrind
    * The specified number of basic blocks has gone by.
 */
-VgSchedReturnCode VG_(scheduler) ( void )
+VgSchedReturnCode VG_(scheduler) ( Int* exitcode )
 {
    ThreadId tid, tid_next;
    UInt     trc;
@@ -956,7 +956,7 @@ VgSchedReturnCode VG_(scheduler) ( void )
 
 	 /* All threads have exited - pretend someone called exit() */
 	 if (n_waiting_for_reaper == n_exists) {
-	    VG_(exitcode) = 0;	/* ? */
+	    *exitcode = 0;	/* ? */
 	    return VgSrc_ExitSyscall;
 	 }
 
@@ -1108,7 +1108,7 @@ VgSchedReturnCode VG_(scheduler) ( void )
                ) {
 
                /* If __NR_exit, remember the supplied argument. */
-               VG_(exitcode) = VG_(threads)[tid].m_ebx; /* syscall arg1 */
+               *exitcode = VG_(threads)[tid].m_ebx; /* syscall arg1 */
 
                /* Only run __libc_freeres if the tool says it's ok and
                   it hasn't been overridden with --run-libc-freeres=no