linux-kernel - [PATCH -tip 01/10] perf tools: Introduce xzalloc() for detecting out of memory

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Message-ID: <20100316220521.32050.85155.stgit@localhost6.localdomain6>
Date:	Tue, 16 Mar 2010 18:05:21 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>, lkml <linux-kernel@...r.kernel.org>
Cc:	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Mike Galbraith <efault@....de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH -tip 01/10] perf tools: Introduce xzalloc() for detecting out
	of memory

Introducing xzalloc() which wrapping zalloc() for detecting out of memory.

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Mike Galbraith <efault@....de>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
---

 tools/perf/util/util.h |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 0f5b2a6..630902e 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -295,6 +295,13 @@ extern void *xmemdupz(const void *data, size_t len);
 extern char *xstrndup(const char *str, size_t len);
 extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
 
+static inline void *xzalloc(size_t size)
+{
+	void *buf;
+	buf = xmalloc(size);
+	return memset(buf, 0, size);
+}
+
 static inline void *zalloc(size_t size)
 {
 	return calloc(1, size);


-- 
Masami Hiramatsu
e-mail: mhiramat@...hat.com
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