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authorMattias Andrée <maandree@kth.se>2020-05-30 22:58:04 +0200
committerMattias Andrée <maandree@kth.se>2020-05-30 22:58:04 +0200
commit783dc9ce1c729ce171a4a460703bdd413bce6364 (patch)
treeaf846446517b4c184e216fd82aa83a2c83034796 /sctrace.c
parentAdd todo about different (bad) behaviour under valgrind (diff)
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Do not print PID numbers if only configured to trace one thread
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to '')
-rw-r--r--sctrace.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/sctrace.c b/sctrace.c
index 0ab561c..f027a77 100644
--- a/sctrace.c
+++ b/sctrace.c
@@ -99,7 +99,7 @@ main(int argc, char **argv)
char *outfile = NULL;
FILE *outfp = stderr;
const char *num = NULL;
- int status, exit_value = 0, trace_event, with_argv0 = 0;
+ int status, exit_value = 0, trace_event, with_argv0 = 0, multiprocess = 0;
unsigned long int trace_options = PTRACE_O_EXITKILL | PTRACE_O_TRACESYSGOOD | PTRACE_O_TRACEEXEC;
struct process *proc, *proc2;
unsigned long int event;
@@ -118,6 +118,7 @@ main(int argc, char **argv)
case 'f':
trace_options |= PTRACE_O_TRACEFORK;
trace_options |= PTRACE_O_TRACEVFORK;
+ multiprocess = 1;
break;
default:
usage();
@@ -184,7 +185,7 @@ main(int argc, char **argv)
}
have_outfp:
- set_trace_output(outfp);
+ setup_trace_output(outfp, multiprocess);
for (;;) {
pid = wait(&status);