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perf tools: Add memdup function

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Adding memdup function to duplicate region of memory.

  void *memdup(const void *src, size_t len)

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1347295819-23177-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-09-10 18:50:17 +02:00 committed by Arnaldo Carvalho de Melo
parent bdde37163e
commit b232e0732b
2 changed files with 19 additions and 1 deletions
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2
tools/perf/util/include/linux/string.h
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@ -1 +1,3 @@
#include <string.h>
void *memdup(const void *src, size_t len);

18
tools/perf/util/string.c
View File

@ -1,5 +1,5 @@
#include "util.h"
#include "string.h"
#include "linux/string.h"
#define K 1024LL
/*
@ -335,3 +335,19 @@ char *rtrim(char *s)
return s;
}
/**
* memdup - duplicate region of memory
* @src: memory region to duplicate
* @len: memory region length
*/
void *memdup(const void *src, size_t len)
{
void *p;
p = malloc(len);
if (p)
memcpy(p, src, len);
return p;
}