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/* Copyright (c) 2011 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.
*/
/* Defines the core API. */
/*
* The PPB_Core interface contains pointers to functions related to memory
* management, time, and threads on the browser.
*/
interface PPB_Core_0_3 {
/* Same as AddRefVar for Resources. */
void AddRefResource(
[in] PP_Resource resource);
/* Same as ReleaseVar for Resources. */
void ReleaseResource(
[in] PP_Resource resource);
/* Allocate memory.
*
* Returns NULL If the allocation fails.
*/
mem_t MemAlloc(
[in] uint32_t num_bytes);
/* Free memory; it's safe to pass NULL. */
void MemFree(
[inout] mem_t 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(
[in] int32_t delay_in_milliseconds,
[in] PP_CompletionCallback callback,
[in] 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.
*/
PP_Bool IsMainThread();
};
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