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Message-Id: <1347460832-32118-1-git-send-email-andi@firstfloor.org>
Date: Wed, 12 Sep 2012 07:40:32 -0700
From: Andi Kleen <andi@...stfloor.org>
To: acme@...stprotocols.net
Cc: linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH] perf, tools: Stop perf stat -p when profiled process exits v2
From: Andi Kleen <ak@...ux.intel.com>
When counting a process with perf stat -p check if the process died
and exit collection if yes.
v2: Add more checks, handle non -p again. Handle /proc not there.
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
tools/perf/builtin-stat.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 861f0ae..2e5b4b3 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -536,7 +536,15 @@ static int run_perf_stat(int argc __used, const char **argv)
if (WIFSIGNALED(status))
psignal(WTERMSIG(status), argv[0]);
} else {
- while(!done) sleep(1);
+ char piddir[40];
+ if (target.pid && access("/proc", X_OK) == 0)
+ snprintf(piddir, sizeof piddir, "/proc/%d", atoi(target.pid));
+
+ while(!done) {
+ sleep(1);
+ if (target.pid && access(piddir, X_OK) < 0 && errno == ENOENT)
+ break;
+ }
}
t1 = rdclock();
--
1.7.7.6
--
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