From e3cd1f9826e6fbffa750a4bdaaad07bd66463faf Mon Sep 17 00:00:00 2001
From: "Bradley C. Kuszmaul" <bradley@tokutek.com>
Date: Wed, 5 Sep 2007 17:40:16 +0000
Subject: [PATCH] Do dbt

git-svn-id: file:///svn/tokudb@247 c7de825b-a66e-492c-adef-691d508d4ae1
---
 buildheader/sample_offsets.c    | 74 ++++++++++++++++++++-------------
 buildheader/sample_offsets_32.h | 27 +++++++-----
 2 files changed, 61 insertions(+), 40 deletions(-)

diff --git a/buildheader/sample_offsets.c b/buildheader/sample_offsets.c
index 1157a59cefd..86bb89d8619 100644
--- a/buildheader/sample_offsets.c
+++ b/buildheader/sample_offsets.c
@@ -1,21 +1,19 @@
 /* Make a db.h that will be link-time compatible with Sleepycat's Berkeley DB. */
 
-#include <db.h>
+#include "../../mysql-5.0.27/mysql-5.0.27/bdb/build_win32/db.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
 
 
-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;
+} fields[FIELD_LIMIT];
+int field_counter=0;
 
 
 int compare_fields (const void *av, const void *bv) {
@@ -26,10 +24,11 @@ int compare_fields (const void *av, const void *bv) {
     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++; })
+#define STRUCT_SETUP(typ, name, fstring) ({ snprintf(fields[field_counter].decl, DECL_LIMIT, fstring, #name); \
+	    fields[field_counter].off = __builtin_offsetof(typ, name);       \
+            { typ dummy;                                           \
+		fields[field_counter].size = sizeof(dummy.name); } \
+	    field_counter++; })
 
 FILE *outf;
 void open_file (void) {
@@ -40,34 +39,49 @@ void open_file (void) {
 
 }
 
-void sample_offsets (void) {
+void sort_and_dump_fields (const char *structname) {
     int i;
-    /* 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);
-    fprintf(outf, "struct fieldinfo fields%d[] = {\n", __WORDSIZE);
-    for (i=0; i<db_field_counter; i++) {
-	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, ",");
+    qsort(fields, field_counter, sizeof(fields[0]), compare_fields);
+    fprintf(outf, "struct fieldinfo %s_fields%d[] = {\n", structname, __WORDSIZE);
+    for (i=0; i<field_counter; i++) {
+	fprintf(outf, "  {\"%s\", %d, %d}", fields[i].decl, fields[i].off, fields[i].size);
+	if (i+1<field_counter) fprintf(outf, ",");
 	fprintf(outf, "\n");
     }
     fprintf(outf, "};\n");
 }
+
+void sample_db_offsets (void) {
+    /* Do these in alphabetical order. */
+    field_counter=0;
+    STRUCT_SETUP(DB,app_private,    "void *%s");
+    STRUCT_SETUP(DB,close,          "int (*%s) (DB*, u_int32_t)");
+    STRUCT_SETUP(DB,cursor,         "int (*%s) (DB *, DB_TXN *, DBC **, u_int32_t)");
+    STRUCT_SETUP(DB,del,            "int (*%s) (DB *, DB_TXN *, DBT *, u_int32_t)");
+    STRUCT_SETUP(DB,get,            "int (*%s) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)");
+    STRUCT_SETUP(DB,key_range,      "int (*%s) (DB *, DB_TXN *, DBT *, DB_KEY_RANGE *, u_int32_t)");
+    STRUCT_SETUP(DB,open,           "int (*%s) (DB *, DB_TXN *, const char *, const char *, DBTYPE, u_int32_t, int)");
+    STRUCT_SETUP(DB,put,            "int (*%s) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)");
+    STRUCT_SETUP(DB,remove,         "int (*%s) (DB *, const char *, const char *, u_int32_t)");
+    STRUCT_SETUP(DB,rename,         "int (*%s) (DB *, const char *, const char *, const char *, u_int32_t)");
+    STRUCT_SETUP(DB,set_bt_compare, "int (*%s) (DB *, int (*)(DB *, const DBT *, const DBT *))");
+    STRUCT_SETUP(DB,set_flags,      "int (*%s) (DB *, u_int32_t)");
+    STRUCT_SETUP(DB,stat,           "int (*%s) (DB *, void *, u_int32_t)");
+    sort_and_dump_fields("db");
+}
+void sample_dbt_offsets (void) {
+    field_counter=0;
+    STRUCT_SETUP(DBT,app_private, "void*%s");
+    STRUCT_SETUP(DBT,data,        "void*%s");
+    STRUCT_SETUP(DBT,flags,       "u_int32_t %s");
+    STRUCT_SETUP(DBT,size,        "u_int32_t %s");
+    STRUCT_SETUP(DBT,ulen,        "u_int32_t %s");
+    sort_and_dump_fields("dbt");
+}
 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();
+    sample_db_offsets();
+    sample_dbt_offsets();
     return 0;
 }
diff --git a/buildheader/sample_offsets_32.h b/buildheader/sample_offsets_32.h
index d360c2ba17e..f126c26c97c 100644
--- a/buildheader/sample_offsets_32.h
+++ b/buildheader/sample_offsets_32.h
@@ -1,16 +1,23 @@
 /* BDB offsets on a 32-bit machine */
-struct fieldinfo fields32[] = {
+struct fieldinfo db_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}
+  {"int (*get) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)", 296, 4},
+  {"int (*key_range) (DB *, DB_TXN *, DBT *, DB_KEY_RANGE *, u_int32_t)", 316, 4},
+  {"int (*open) (DB *, DB_TXN *, const char *, const char *, DBTYPE, u_int32_t, int)", 320, 4},
+  {"int (*put) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t)", 324, 4},
+  {"int (*remove) (DB *, const char *, const char *, u_int32_t)", 328, 4},
+  {"int (*rename) (DB *, const char *, const char *, const char *, u_int32_t)", 332, 4},
+  {"int (*set_flags) (DB *, u_int32_t)", 380, 4},
+  {"int (*stat) (DB *, void *, u_int32_t)", 396, 4},
+  {"int (*set_bt_compare) (DB *, int (*)(DB *, const DBT *, const DBT *))", 412, 4}
+};
+struct fieldinfo dbt_fields32[] = {
+  {"void*data", 0, 4},
+  {"u_int32_t size", 4, 4},
+  {"u_int32_t ulen", 8, 4},
+  {"void*app_private", 20, 4},
+  {"u_int32_t flags", 24, 4}
 };