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Create sample offsets and test on a 32-bit machine

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git-svn-id: file:///svn/tokudb@241 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Bradley C. Kuszmaul 2007-09-04 21:18:09 +00:00
parent 801060c7a5
commit 948986c11e
3 changed files with 35 additions and 22 deletions
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4
buildheader/Makefile
View file

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

37
buildheader/sample_offsets.c
View file

@ -3,6 +3,7 @@
#include <db.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
DB db_dummy;
@ -30,11 +31,17 @@ int compare_fields (const void *av, const void *bv) {
db_fields[db_field_counter].size = sizeof(db_dummy.name); \
db_field_counter++; })
FILE *outf;
void open_file (void) {
char fname[100];
snprintf(fname, 100, "sample_offsets_%d.h", __WORDSIZE);
outf = fopen(fname, "w");
assert(outf);
}
void sample_offsets (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)");
@ -50,27 +57,17 @@ void sample_offsets (void) {
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");
fprintf(outf, "struct fieldinfo fields%d[] = {\n", __WORDSIZE);
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;
fprintf(outf, " {\"%s\", %d, %d}", db_fields[i].decl, db_fields[i].off, db_fields[i].size);
if (i+1<db_field_counter) fprintf(outf, ",");
fprintf(outf, "\n");
}
printf("}\n");
fprintf(outf, "};\n");
}
int main (int argc __attribute__((__unused__)), char *argv[] __attribute__((__unused__))) {
open_file();
fprintf(outf, "/* BDB offsets on a %d-bit machine */\n", __WORDSIZE);
sample_offsets();
return 0;
}

16
buildheader/sample_offsets_32.h Normal file
View file

@ -0,0 +1,16 @@
/* BDB offsets on a 32-bit machine */
struct fieldinfo fields32[] = {
{"void *app_private", 16, 4},
{"int (*close) (DB*, u_int32_t)", 272, 4},
{"int (*cursor) (DB *, DB_TXN *, DBC **, u_int32_t)", 276, 4},
{"int (*del) (DB *, DB_TXN *, DBT *, u_int32_t)", 280, 4},
{"int (*get) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)", 300, 4},
{"int (*key_range) (DB *, DB_TXN *, DBT *, DB_KEY_RANGE *, u_int32_t)", 364, 4},
{"int (*open) (DB *, DB_TXN *, const char *, const char *, DBTYPE, u_int32_t, int)", 368, 4},
{"int (*put) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)", 372, 4},
{"int (*remove) (DB *, const char *, const char *, u_int32_t)", 376, 4},
{"int (*rename) (DB *, const char *, const char *, const char *, u_int32_t)", 380, 4},
{"int (*set_flags) (DB *, u_int32_t)", 424, 4},
{"int (*stat) (DB *, void *, u_int32_t)", 452, 4},
{"int (*set_bt_compare) (DB *, int (*)(DB *, const DBT *, const DBT *))", 476, 4}
};