From 31be80f02cddda55e75614884038fa4645b694cd Mon Sep 17 00:00:00 2001
From: Glenn Kasten <gkasten@google.com>
Date: Tue, 5 Jun 2012 16:42:22 -0700
Subject: [PATCH] Add -n and -S options for 'nohup', offline traces

Change-Id: Ieef12b36b8519ff689ab5a81447b1b9bf4806171
---
 cmds/atrace/atrace.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/cmds/atrace/atrace.c b/cmds/atrace/atrace.c
index 5edc47b38..890165af8 100644
--- a/cmds/atrace/atrace.c
+++ b/cmds/atrace/atrace.c
@@ -39,6 +39,8 @@ static bool g_traceWorkqueue = false;
 static bool g_traceOverwrite = false;
 static int g_traceBufferSizeKB = 2048;
 static bool g_compress = false;
+static bool g_nohup = false;
+static int g_initialSleepSecs = 0;
 
 /* Global state */
 static bool g_traceAborted = false;
@@ -417,7 +419,9 @@ static void showHelp(const char *cmd)
 }
 
 static void handleSignal(int signo) {
-    g_traceAborted = true;
+    if (!g_nohup) {
+        g_traceAborted = true;
+    }
 }
 
 static void registerSigHandler() {
@@ -443,7 +447,7 @@ int main(int argc, char **argv)
     for (;;) {
         int ret;
 
-        ret = getopt(argc, argv, "b:cidflst:uwz");
+        ret = getopt(argc, argv, "b:cidflst:uwznS:");
 
         if (ret < 0) {
             break;
@@ -478,10 +482,18 @@ int main(int argc, char **argv)
                 g_traceFrequency = true;
             break;
 
+            case 'n':
+                g_nohup = true;
+                break;
+
             case 's':
                 g_traceSchedSwitch = true;
             break;
 
+            case 'S':
+                g_initialSleepSecs = atoi(optarg);
+            break;
+
             case 't':
                 g_traceDurationSeconds = atoi(optarg);
             break;
@@ -516,6 +528,10 @@ int main(int argc, char **argv)
 
     registerSigHandler();
 
+    if (g_initialSleepSecs > 0) {
+        sleep(g_initialSleepSecs);
+    }
+
     bool ok = startTrace(isRoot);
 
     if (ok) {