static void
check(const char *fmt, ...)
{
size_t len;
char buf[200], *end, *p;
va_list ap;
len = 0; /* -Werror=maybe-uninitialized */
va_start(ap, fmt);
testutil_check(__wt_struct_sizev(NULL, &len, fmt, ap));
va_end(ap);
if (len < 1 || len >= sizeof(buf))
testutil_die(EINVAL,
"Unexpected length from __wt_struct_sizev");
va_start(ap, fmt);
testutil_check(__wt_struct_packv(NULL, buf, sizeof(buf), fmt, ap));
va_end(ap);
printf("%s ", fmt);
for (p = buf, end = p + len; p < end; p++)
printf("%02x", (u_char)*p & 0xff);
printf("\n");
}
/*内部使用的struct pack函数封装*/
int __wt_struct_pack(WT_SESSION_IMPL *session,
void *buffer, size_t size, const char *fmt, ...)
{
WT_DECL_RET;
va_list ap;
va_start(ap, fmt);
ret = __wt_struct_packv(session, buffer, size, fmt, ap);
va_end(ap);
return (ret);
}
/*
* wiredtiger_struct_pack --
* Pack a byte string (extension API).
*/
int
wiredtiger_struct_pack(WT_SESSION *wt_session,
void *buffer, size_t len, const char *format, ...)
{
WT_DECL_RET;
WT_SESSION_IMPL *session;
va_list ap;
session = (WT_SESSION_IMPL *)wt_session;
va_start(ap, format);
ret = __wt_struct_packv(session, buffer, len, format, ap);
va_end(ap);
return (ret);
}
/*
* __wt_ext_struct_pack --
* Pack a byte string (extension API).
*/
int
__wt_ext_struct_pack(WT_EXTENSION_API *wt_api, WT_SESSION *wt_session,
void *buffer, size_t len, const char *fmt, ...)
{
WT_DECL_RET;
WT_SESSION_IMPL *session;
va_list ap;
session = (wt_session != NULL) ? (WT_SESSION_IMPL *)wt_session :
((WT_CONNECTION_IMPL *)wt_api->conn)->default_session;
va_start(ap, fmt);
ret = __wt_struct_packv(session, buffer, len, fmt, ap);
va_end(ap);
return (ret);
}
int
__wt_log_put(WT_SESSION_IMPL *session, WT_LOGREC_DESC *recdesc, ...)
{
WT_DECL_RET;
WT_ITEM *buf;
va_list ap;
size_t size;
buf = &session->logrec_buf;
va_start(ap, recdesc);
ret = __log_record_size(session, &size, recdesc, ap);
va_end(ap);
WT_RET(ret);
WT_RET(__wt_buf_initsize(session, buf, size));
va_start(ap, recdesc);
ret = __wt_struct_packv(session, buf->mem, size, recdesc->fmt, ap);
va_end(ap);
return (ret);
}
static void
check(const char *fmt, ...)
{
char buf[200], *end, *p;
va_list ap;
size_t len;
len = 0; /* -Werror=maybe-uninitialized */
va_start(ap, fmt);
assert(__wt_struct_sizev(NULL, &len, fmt, ap) == 0);
va_end(ap);
assert(len > 0 && len < sizeof(buf));
va_start(ap, fmt);
assert(__wt_struct_packv(NULL, buf, sizeof(buf), fmt, ap) == 0);
va_end(ap);
printf("%s ", fmt);
for (p = buf, end = p + len; p < end; p++)
printf("%02x", *p & 0xff);
printf("\n");
}