tools/perf/util/expr.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef PARSE_CTX_H
   3 #define PARSE_CTX_H 1
   4
   5 // There are fixes that need to land upstream before we can use libbpf's headers,
   6 // for now use our copy uncoditionally, since the data structures at this point
   7 // are exactly the same, no problem.
   8 //#ifdef HAVE_LIBBPF_SUPPORT
   9 //#include <bpf/hashmap.h>
  10 //#else
  11 #include "util/hashmap.h"
  12 //#endif
  13
  14 struct metric_ref;
  15
  16 struct expr_id {
  17         char            *id;
  18         struct expr_id  *parent;
  19 };
  20
  21 struct expr_parse_ctx {
  22         struct hashmap   ids;
  23         struct expr_id  *parent;
  24 };
  25
  26 struct expr_id_data {
  27         union {
  28                 double val;
  29                 struct {
  30                         const char *metric_name;
  31                         const char *metric_expr;
  32                         bool counted;
  33                 } ref;
  34                 struct expr_id  *parent;
  35         };
  36
  37         bool is_ref;
  38 };
  39
  40 struct expr_scanner_ctx {
  41         int start_token;
  42         int runtime;
  43 };
  44
  45 void expr__ctx_init(struct expr_parse_ctx *ctx);
  46 void expr__ctx_clear(struct expr_parse_ctx *ctx);
  47 void expr__del_id(struct expr_parse_ctx *ctx, const char *id);
  48 int expr__add_id(struct expr_parse_ctx *ctx, const char *id);
  49 int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val);
  50 int expr__add_ref(struct expr_parse_ctx *ctx, struct metric_ref *ref);
  51 int expr__get_id(struct expr_parse_ctx *ctx, const char *id,
  52                  struct expr_id_data **data);
  53 int expr__resolve_id(struct expr_parse_ctx *ctx, const char *id,
  54                      struct expr_id_data **datap);
  55 int expr__parse(double *final_val, struct expr_parse_ctx *ctx,
  56                 const char *expr, int runtime);
  57 int expr__find_other(const char *expr, const char *one,
  58                 struct expr_parse_ctx *ids, int runtime);
  59
  60 #endif