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SubjectRe: [PATCH 03/10] perf tools: Add expr__add_id function
On Fri, Jun 26, 2020 at 12:47 PM Jiri Olsa <jolsa@kernel.org> wrote:
>
> Adding expr__add_id function to data for ID
> with zero value, which is used when scanning
> the expression for IDs.
>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---
> tools/perf/util/expr.c | 29 +++++++++++++++++++++++------
> tools/perf/util/expr.h | 1 +
> tools/perf/util/expr.y | 2 +-
> 3 files changed, 25 insertions(+), 7 deletions(-)
>
> diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
> index 7573b21e73df..0b6d3a6ce88e 100644
> --- a/tools/perf/util/expr.c
> +++ b/tools/perf/util/expr.c
> @@ -32,6 +32,24 @@ static bool key_equal(const void *key1, const void *key2,
> return !strcmp((const char *)key1, (const char *)key2);
> }
>
> +/* Caller must make sure id is allocated */
> +int expr__add_id(struct expr_parse_ctx *ctx, const char *name)

Nit, perhaps "id" is more consistent than "name". Perhaps also change
add_val below.

Acked-by: Ian Rogers <irogers@google.com>

> +{
> + struct expr_parse_data *data_ptr = NULL, *old_data = NULL;
> + char *old_key = NULL;
> + int ret;
> +
> + data_ptr = malloc(sizeof(*data_ptr));
> + if (!data_ptr)
> + return -ENOMEM;
> +
> + ret = hashmap__set(&ctx->ids, name, data_ptr,
> + (const void **)&old_key, (void **)&old_data);
> + free(old_key);
> + free(old_data);
> + return ret;
> +}
> +
> /* Caller must make sure id is allocated */
> int expr__add_val(struct expr_parse_ctx *ctx, const char *name, double val)
> {
> @@ -39,12 +57,11 @@ int expr__add_val(struct expr_parse_ctx *ctx, const char *name, double val)
> char *old_key = NULL;
> int ret;
>
> - if (val != 0.0) {
> - data_ptr = malloc(sizeof(*data_ptr));
> - if (!data_ptr)
> - return -ENOMEM;
> - data_ptr->val = val;
> - }
> + data_ptr = malloc(sizeof(*data_ptr));
> + if (!data_ptr)
> + return -ENOMEM;
> + data_ptr->val = val;
> +
> ret = hashmap__set(&ctx->ids, name, data_ptr,
> (const void **)&old_key, (void **)&old_data);
> free(old_key);
> diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
> index f9f16efe76bc..5452e641acf4 100644
> --- a/tools/perf/util/expr.h
> +++ b/tools/perf/util/expr.h
> @@ -26,6 +26,7 @@ struct expr_scanner_ctx {
>
> void expr__ctx_init(struct expr_parse_ctx *ctx);
> void expr__ctx_clear(struct expr_parse_ctx *ctx);
> +int expr__add_id(struct expr_parse_ctx *ctx, const char *name);
> int expr__add_val(struct expr_parse_ctx *ctx, const char *id, double val);
> int expr__get_id(struct expr_parse_ctx *ctx, const char *id, double *val_ptr);
> int expr__parse(double *final_val, struct expr_parse_ctx *ctx,
> diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
> index ff5e5f6e170d..ac4b119877e0 100644
> --- a/tools/perf/util/expr.y
> +++ b/tools/perf/util/expr.y
> @@ -71,7 +71,7 @@ all_other: all_other other
>
> other: ID
> {
> - expr__add_val(ctx, $1, 0.0);
> + expr__add_id(ctx, $1);
> }
> |
> MIN | MAX | IF | ELSE | SMT_ON | NUMBER | '|' | '^' | '&' | '-' | '+' | '*' | '/' | '%' | '(' | ')' | ','
> --
> 2.25.4
>

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