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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_C_PPB_CORE_H_
#define PPAPI_C_PPB_CORE_H_
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_stdint.h"
#include "ppapi/c/pp_time.h"
#include "ppapi/c/pp_var.h"
struct PP_CompletionCallback;
#define PPB_CORE_INTERFACE "PPB_Core;0.1"
/**
* @file
* Defines the API ...
*
* @addtogroup PPB
* @{
*/
/** {PENDING: describe PPB_CORE} */
struct PPB_Core {
/** Same as AddRefVar for Resources. */
void (*AddRefResource)(PP_Resource resource);
/** Same as ReleaseVar for Resources. */
void (*ReleaseResource)(PP_Resource resource);
/**
* Allocate memory.
*
* @return NULL If the allocation fails.
*/
void* (*MemAlloc)(size_t num_bytes);
/** Free memory; it's safe to pass NULL. */
void (*MemFree)(void* ptr);
/**
* Returns the "wall clock time" according to the browser.
*
* See the definition of PP_Time.
*/
PP_Time (*GetTime)();
/**
* Returns the "tick time" according to the browser. This clock is used by
* the browser when passing some event times to the plugin (e.g., via the
* PP_InputEvent::time_stamp_seconds field). It is not correlated to any
* actual wall clock time (like GetTime()). Because of this, it will not run
* change if the user changes their computer clock.
*
* TODO(brettw) http://code.google.com/p/chromium/issues/detail?id=57448
* This currently does change with wall clock time, but will be fixed in
* a future release.
*/
PP_TimeTicks (*GetTimeTicks)();
/**
* Schedules work to be executed on the main plugin thread after the
* specified delay. The delay may be 0 to specify a call back as soon as
* possible.
*
* The |result| parameter will just be passed as the second argument as the
* callback. Many applications won't need this, but it allows a plugin to
* emulate calls of some callbacks which do use this value.
*
* NOTE: If the browser is shutting down or if the plugin has no instances,
* then the callback function may not be called.
*/
void (*CallOnMainThread)(int32_t delay_in_milliseconds,
struct PP_CompletionCallback callback,
int32_t result);
/**
* Returns true if the current thread is the main pepper thread.
*
* This is useful for implementing sanity checks, and deciding if dispatching
* via CallOnMainThread() is required.
*/
bool (*IsMainThread)();
};
/**
* @}
* End addtogroup PPB
*/
#endif // PPAPI_C_DEV_PPB_CORE_DEV_H_
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