linux-kernel - Re: [PATCH 1/8] perf, tools: Add jsmn `jasmine' JSON parser

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Date:	Tue, 11 Mar 2014 14:38:11 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	acme@...radead.org, mingo@...nel.org, linux-kernel@...r.kernel.org,
	peterz@...radead.org, eranian@...gle.com, namhyung@...nel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 1/8] perf, tools: Add jsmn `jasmine' JSON parser

On Wed, Mar 05, 2014 at 11:49:31AM -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 

SNIP

> +jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len)
> +{
> +	jsmn_parser parser;
> +	jsmntok_t *tokens;
> +	jsmnerr_t res;
> +	unsigned sz;
> +
> +	*map = mapfile(fn, size);
> +	if (!*map)
> +		return NULL;
> +	/* Heuristic */
> +	sz = *size * 16;
> +	tokens = malloc(sz);
> +	if (!tokens)
> +		goto error;
> +	jsmn_init(&parser);
> +	res = jsmn_parse(&parser, *map, *size, tokens,
> +			 sz / sizeof(jsmntok_t));
> +	if (res != JSMN_SUCCESS) {
> +		fprintf(stderr, "%s: json error %d\n", fn, res);

use pr_err

jirka
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