perf tools: Introduce xzalloc() for detecting out of memory conditions
Introducing xzalloc() which wrapping zalloc() for detecting out of memory conditions. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20100316220521.32050.85155.stgit@localhost6.localdomain6> [ -v2: small cleanups in surrounding code ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -295,6 +295,13 @@ extern void *xmemdupz(const void *data, size_t len);
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extern char *xstrndup(const char *str, size_t len);
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extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
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static inline void *xzalloc(size_t size)
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{
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void *buf = xmalloc(size);
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return memset(buf, 0, size);
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}
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static inline void *zalloc(size_t size)
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{
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return calloc(1, size);
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@ -309,6 +316,7 @@ static inline int has_extension(const char *filename, const char *ext)
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{
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size_t len = strlen(filename);
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size_t extlen = strlen(ext);
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return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
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}
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@ -322,6 +330,7 @@ static inline int has_extension(const char *filename, const char *ext)
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#undef isalnum
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#undef tolower
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#undef toupper
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extern unsigned char sane_ctype[256];
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#define GIT_SPACE 0x01
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#define GIT_DIGIT 0x02
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