Consider exec and exit events an end of outstanding calls

- This cleans up a lot of stuff.  The actual substance is addition of
  account_current_callstack in handle_event.c (which however uses
  those cleaned-up interfaces).

- trace-exec.exp was extended to check that the exec syscall can be
  seen in -c output.  That's one of the symptoms of what this fixes.

- This hides dict_opt_c in summary.c.  It also gets rid of the global
  variable current_time_spent--instead, the information is passed via
  a function argument in a struct timedelta (so that we never confuse
  absolute time with relative).  callstack_element.time_spent was renamed
  to .enter_time, as that is what it has always been.

1 files changed, 12 insertions, 4 deletions

diff --git a/testsuite/ltrace.minor/trace-exec.exp b/testsuite/ltrace.minor/trace-exec.exp
index 7a953de..57260f8 100644
--- a/testsuite/ltrace.minor/trace-exec.exp
+++ b/testsuite/ltrace.minor/trace-exec.exp
@@ -1,5 +1,5 @@
 # This file is part of ltrace.
-# Copyright (C) 2012 Petr Machata, Red Hat Inc.
+# Copyright (C) 2012, 2013 Petr Machata, Red Hat Inc.
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
@@ -16,22 +16,30 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 # 02110-1301 USA
 
-ltraceMatch [ltraceRun -xmain -- [ltraceCompile {} [ltraceSource c {
+set bin1 [ltraceCompile {} [ltraceSource c {
     #include <unistd.h>
     #include <stdlib.h>
     int main(int argc, char ** argv) {
 	execl(argv[1], argv[1], NULL);
 	abort();
     }
-}]] [ltraceCompile {} [ltraceSource c {
+}]]
+
+set bin2 [ltraceCompile {} [ltraceSource c {
     #include <stdio.h>
     int main(void) {
 	return puts("Hello, World.");
     }
-}]]] {
+}]]
+
+ltraceMatch [ltraceRun -xmain -- $bin1 $bin2] {
     {{^execl\(} == 1}
     {{^puts\(.*\) .*= 14} == 1}
     {{^main\(} == 2}
 }
 
+ltraceMatch [ltraceRun -c -- $bin1 $bin2] {
+    {{exec} > 0}
+}
+
 ltraceDone