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perf tools: Introduce zfree

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For the frequent idiom of:

   free(ptr);
   ptr = NULL;

Make it expect a pointer to the pointer being freed, so that it becomes
clear at first sight that the variable being freed is being modified.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-pfw02ezuab37kha18wlut7ir@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2013-12-26 17:41:15 -03:00
parent f5385650c0
commit 046625231a
22 changed files with 56 additions and 103 deletions
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12
tools/perf/util/annotate.c
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@@ -185,8 +185,7 @@ static int lock__parse(struct ins_operands *ops)
return 0;
out_free_ops:
free(ops->locked.ops);
ops->locked.ops = NULL;
zfree(&ops->locked.ops);
return 0;
}
@@ -256,8 +255,7 @@ static int mov__parse(struct ins_operands *ops)
return 0;
out_free_source:
free(ops->source.raw);
ops->source.raw = NULL;
zfree(&ops->source.raw);
return -1;
}
@@ -560,8 +558,7 @@ static int disasm_line__parse(char *line, char **namep, char **rawp)
return 0;
out_free_name:
free(*namep);
*namep = NULL;
zfree(namep);
return -1;
}
@@ -1113,8 +1110,7 @@ static void symbol__free_source_line(struct symbol *sym, int len)
src_line = (void *)src_line + sizeof_src_line;
}
free(notes->src->lines);
notes->src->lines = NULL;
zfree(&notes->src->lines);
}
/* Get the filename:line for the colored entries */