mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-01-22 14:54:20 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Non-portable implementation

Browse source 
git-svn-id: file:///svn/tokudb@239 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Bradley C. Kuszmaul 2007-09-04 20:59:50 +00:00
parent 808951d65d
commit 78b48fa835
2 changed files with 96 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
buildheader/Makefile Normal file
View file

@ -0,0 +1,4 @@
CFLAGS = -Wall -W -O2 -Werror -g
make_db_h:
run: make_db_h
./make_db_h

92
buildheader/make_db_h.c Normal file
View file

@ -0,0 +1,92 @@
/* Make a db.h that will be link-time compatible with Sleepycat's Berkeley DB. */
#include <db.h>
#include <stdio.h>
#include <stdlib.h>
void print_dbtype(void) {
/* DBTYPE is mentioned by db_open.html */
printf("typedef enum {\n");
printf(" DB_BTREE=%d\n", DB_BTREE);
printf("} DBTYPE;\n");
}
DB db_dummy;
#define DECL_LIMIT 100
#define FIELD_LIMIT 100
struct fieldinfo {
char decl[DECL_LIMIT];
unsigned int off;
unsigned int size;
} db_fields[FIELD_LIMIT];
int db_field_counter=0;
int compare_fields (const void *av, const void *bv) {
const struct fieldinfo *a = av;
const struct fieldinfo *b = bv;
if (a->off < b->off) return -1;
if (a->off > b->off) return 1;
return 0;
}
#define DB_STRUCT_SETUP(name, fstring) ({ snprintf(db_fields[db_field_counter].decl, DECL_LIMIT, fstring, #name); \
db_fields[db_field_counter].off = offsetof(DB, name); \
db_fields[db_field_counter].size = sizeof(db_dummy.name); \
db_field_counter++; })
void print_db_struct (void) {
int i;
unsigned int current_offset=0;
int dummy_counter=0;
int did_toku_internal=0;
/* Do these in alphabetical order. */
DB_STRUCT_SETUP(app_private, "void *%s");
DB_STRUCT_SETUP(close, "int (*%s) (DB*, u_int32_t)");
DB_STRUCT_SETUP(cursor, "int (*%s) (DB *, DB_TXN *, DBC **, u_int32_t)");
DB_STRUCT_SETUP(del, "int (*%s) (DB *, DB_TXN *, DBT *, u_int32_t)");
DB_STRUCT_SETUP(get, "int (*%s) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)");
DB_STRUCT_SETUP(key_range, "int (*%s) (DB *, DB_TXN *, DBT *, DB_KEY_RANGE *, u_int32_t)");
DB_STRUCT_SETUP(open, "int (*%s) (DB *, DB_TXN *, const char *, const char *, DBTYPE, u_int32_t, int)");
DB_STRUCT_SETUP(put, "int (*%s) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)");
DB_STRUCT_SETUP(remove, "int (*%s) (DB *, const char *, const char *, u_int32_t)");
DB_STRUCT_SETUP(rename, "int (*%s) (DB *, const char *, const char *, const char *, u_int32_t)");
DB_STRUCT_SETUP(set_bt_compare, "int (*%s) (DB *, int (*)(DB *, const DBT *, const DBT *))");
DB_STRUCT_SETUP(set_flags, "int (*%s) (DB *, u_int32_t)");
DB_STRUCT_SETUP(stat, "int (*%s) (DB *, void *, u_int32_t)");
qsort(db_fields, db_field_counter, sizeof(db_fields[0]), compare_fields);
printf("struct __toku_db {\n");
for (i=0; i<db_field_counter; i++) {
unsigned int this_offset = db_fields[i].off;
if (!did_toku_internal && this_offset+sizeof(void*)>current_offset) {
printf(" struct __tokudb_internal *i;\n");
current_offset+=sizeof(void*);
did_toku_internal=1;
}
if (this_offset>current_offset) {
printf(" char dummy%d[%d];\n", dummy_counter++, this_offset-current_offset);
current_offset=this_offset;
}
if (this_offset<current_offset) {
printf("Whoops\n");
}
printf(" %s; /* offset=%d size=%d */\n", db_fields[i].decl, db_fields[i].off, db_fields[i].size);
current_offset+=db_fields[i].size;
}
printf("}\n");
}
int main (int argc __attribute__((__unused__)), char *argv[] __attribute__((__unused__))) {
printf("#ifndef _DB_H\n");
printf("#define _DB_H\n");
printf("/* This code generated by make_db_h. Copyright (c) 2007 Tokutek */\n");
printf("#if defined(__cplusplus)\nextern \"C\" {\n#endif\n");
printf("#if defined(__cplusplus)\n}\n#endif\n");
printf("typedef struct __toku_db DB;\n");
print_dbtype();
print_db_struct();
printf("#endif\n");
return 0;
}