test_json_parser_perf.c File Reference

#include "postgres_fe.h"
#include "common/jsonapi.h"
#include "common/logging.h"
#include "lib/stringinfo.h"
#include "mb/pg_wchar.h"
#include <stdio.h>
#include <string.h>

Include dependency graph for test_json_parser_perf.c:

Go to the source code of this file.

Macros
#define	BUFSIZE   6000

Functions
int	main (int argc, char **argv)

Macro Definition Documentation

BUFSIZE

#define BUFSIZE   6000

Definition at line 32 of file test_json_parser_perf.c.

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 35 of file test_json_parser_perf.c.

{
    char        buff[BUFSIZE];
    FILE       *json_file;
    JsonParseErrorType result;
    JsonLexContext *lex;
    StringInfoData json;
    int         n_read;
    int         iter;
    int         use_inc = 0;
 
    pg_logging_init(argv[0]);
 
    initStringInfo(&json);
 
    if (strcmp(argv[1], "-i") == 0)
    {
        use_inc = 1;
        argv++;
    }
 
    sscanf(argv[1], "%d", &iter);
 
    if ((json_file = fopen(argv[2], PG_BINARY_R)) == NULL)
        pg_fatal("Could not open input file '%s': %m", argv[2]);
 
    while ((n_read = fread(buff, 1, 6000, json_file)) > 0)
    {
        appendBinaryStringInfo(&json, buff, n_read);
    }
    fclose(json_file);
    for (int i = 0; i < iter; i++)
    {
        if (use_inc)
        {
            lex = makeJsonLexContextIncremental(NULL, PG_UTF8, false);
            result = pg_parse_json_incremental(lex, &nullSemAction,
                                               json.data, json.len,
                                               true);
            freeJsonLexContext(lex);
        }
        else
        {
            lex = makeJsonLexContextCstringLen(NULL, json.data, json.len,
                                               PG_UTF8, false);
            result = pg_parse_json(lex, &nullSemAction);
            freeJsonLexContext(lex);
        }
        if (result != JSON_SUCCESS)
            pg_fatal("unexpected result %d (expecting %d) on parse",
                     result, JSON_SUCCESS);
    }
    exit(0);
}

References appendBinaryStringInfo(), BUFSIZE, StringInfoData::data, freeJsonLexContext(), i, initStringInfo(), JSON_SUCCESS, StringInfoData::len, makeJsonLexContextCstringLen(), makeJsonLexContextIncremental(), nullSemAction, PG_BINARY_R, pg_fatal, pg_logging_init(), pg_parse_json(), pg_parse_json_incremental(), and PG_UTF8.