summaryrefslogblamecommitdiff
path: root/tools/perf/util/expr.h
blob: 81d04ff7f85714aa6cfa6dd3e362111535755506 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
                                      

                     






                                                                                 
 
                  
                       
                           
  
                     







                                                
  
                         
                    
  
                                                
                                                 
                                                              
                                                             
                                                                             
                                                                      
                                                            


                                                              
      
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef PARSE_CTX_H
#define PARSE_CTX_H 1

// There are fixes that need to land upstream before we can use libbpf's headers,
// for now use our copy uncoditionally, since the data structures at this point
// are exactly the same, no problem.
//#ifdef HAVE_LIBBPF_SUPPORT
//#include <bpf/hashmap.h>
//#else
#include "util/hashmap.h"
//#endif

struct metric_ref;

struct expr_parse_ctx {
	struct hashmap ids;
};

struct expr_id_data {
	union {
		double val;
		struct {
			const char *metric_name;
			const char *metric_expr;
		} ref;
	};

	bool is_ref;
};

struct expr_scanner_ctx {
	int start_token;
	int runtime;
};

void expr__ctx_init(struct expr_parse_ctx *ctx);
void expr__ctx_clear(struct expr_parse_ctx *ctx);
void expr__del_id(struct expr_parse_ctx *ctx, const char *id);
int expr__add_id(struct expr_parse_ctx *ctx, const char *id);
int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val);
int expr__add_ref(struct expr_parse_ctx *ctx, struct metric_ref *ref);
int expr__get_id(struct expr_parse_ctx *ctx, const char *id,
		 struct expr_id_data **data);
int expr__parse(double *final_val, struct expr_parse_ctx *ctx,
		const char *expr, int runtime);
int expr__find_other(const char *expr, const char *one,
		struct expr_parse_ctx *ids, int runtime);

#endif