cef/include/capi/cef_base_capi.h

90 lines
3.2 KiB
C

// Copyright (c) 2014 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_CAPI_CEF_BASE_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_BASE_CAPI_H_
#include <stdint.h>
#include "include/internal/cef_export.h"
#include "include/internal/cef_string.h"
#include "include/internal/cef_string_list.h"
#include "include/internal/cef_string_map.h"
#include "include/internal/cef_string_multimap.h"
#include "include/internal/cef_types.h"
#ifdef __cplusplus
extern "C" {
#endif
///
// Structure defining the reference count implementation functions. All
// framework structures must include the cef_base_t structure first.
///
typedef struct _cef_base_t {
///
// Size of the data structure.
///
size_t size;
///
// Called to increment the reference count for the object. Should be called
// for every new copy of a pointer to a given object.
///
void (CEF_CALLBACK *add_ref)(struct _cef_base_t* self);
///
// Called to decrement the reference count for the object. If the reference
// count falls to 0 the object should self-delete. Returns true (1) if the
// resulting reference count is 0.
///
int (CEF_CALLBACK *release)(struct _cef_base_t* self);
///
// Returns true (1) if the current reference count is 1.
///
int (CEF_CALLBACK *has_one_ref)(struct _cef_base_t* self);
} cef_base_t;
// Check that the structure |s|, which is defined with a cef_base_t member named
// |base|, is large enough to contain the specified member |f|.
#define CEF_MEMBER_EXISTS(s, f) \
((intptr_t)&((s)->f) - (intptr_t)(s) + sizeof((s)->f) <= (s)->base.size)
#define CEF_MEMBER_MISSING(s, f) (!CEF_MEMBER_EXISTS(s, f) || !((s)->f))
#ifdef __cplusplus
}
#endif
#endif // CEF_INCLUDE_CAPI_CEF_BASE_CAPI_H_