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/* Copyright 2012 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* This file defines the <code>PPB_Core</code> interface defined by the browser
* and containing pointers to functions related to memory management, time, and
* threads.
*/
label Chrome {
M14 = 1.0
};
/**
* The <code>PPB_Core</code> interface contains pointers to functions related
* to memory management, time, and threads on the browser.
*
*/
interface PPB_Core {
/**
*
* AddRefResource() adds a reference to a resource.
*
* @param[in] config A <code>PP_Resource</code> corresponding to a
* resource.
*/
void AddRefResource([in] PP_Resource resource);
/**
* ReleaseResource() removes a reference from a resource.
*
* @param[in] config A <code>PP_Resource</code> corresponding to a
* resource.
*/
void ReleaseResource([in] PP_Resource resource);
/**
* GetTime() returns the "wall clock time" according to the
* browser.
*
* @return A <code>PP_Time</code> containing the "wall clock time" according
* to the browser.
*/
PP_Time GetTime();
/**
* GetTimeTicks() returns the "tick time" according to the browser.
* This clock is used by the browser when passing some event times to the
* module (e.g. using the <code>PP_InputEvent::time_stamp_seconds</code>
* 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.
*
* @return A <code>PP_TimeTicks</code> containing the "tick time" according
* to the browser.
*/
PP_TimeTicks GetTimeTicks();
/**
* CallOnMainThread() schedules work to be executed on the main module thread
* after the specified delay. The delay may be 0 to specify a call back as
* soon as possible.
*
* The <code>result</code> parameter will just be passed as the second
* argument to the callback. Many applications won't need this, but it allows
* a module to emulate calls of some callbacks which do use this value.
*
* <strong>Note:</strong> CallOnMainThread, even when used from the main
* thread with a delay of 0 milliseconds, will never directly invoke the
* callback. Even in this case, the callback will be scheduled
* asynchronously.
*
* <strong>Note:</strong> If the browser is shutting down or if the module
* has no instances, then the callback function may not be called.
*
* @param[in] delay_in_milliseconds An int32_t delay in milliseconds.
* @param[in] callback A <code>PP_CompletionCallback</code> callback function
* that the browser will call after the specified delay.
* @param[in] result An int32_t that the browser will pass to the given
* <code>PP_CompletionCallback</code>.
*/
void CallOnMainThread(
[in] int32_t delay_in_milliseconds,
[in] PP_CompletionCallback callback,
[in] int32_t result);
/**
* IsMainThread() returns true if the current thread is the main pepper
* thread.
*
* This function is useful for implementing sanity checks, and deciding if
* dispatching using CallOnMainThread() is required.
*
* @return A <code>PP_Bool</code> containing <code>PP_TRUE</code> if the
* current thread is the main pepper thread, otherwise <code>PP_FALSE</code>.
*/
PP_Bool IsMainThread();
};
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