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// -*- C++ -*-
/*
* @copyright
* Copyright (C) 2009-2011
* Intel Corporation
*
* @copyright
* This file is part of the Intel Cilk Plus Library. This library is free
* software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the
* Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* @copyright
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* @copyright
* Under Section 7 of GPL version 3, you are granted additional
* permissions described in the GCC Runtime Library Exception, version
* 3.1, as published by the Free Software Foundation.
*
* @copyright
* You should have received a copy of the GNU General Public License and
* a copy of the GCC Runtime Library Exception along with this program;
* see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
* <http://www.gnu.org/licenses/>.
*
******************************************************************************
*
* metacall.h
*
* This is an internal header file defining part of the metacall
* interface used by Cilkscreen. It is not a stable API and is
* subject to change without notice.
*/
// Provides the enum of metacall kinds. This is used by Cilkscreen and the
// runtime, and will probably be used by any future ptools.
#pragma once
///////////////////////////////////////////////////////////////////////////////
enum
{
// Notify Cilkscreen to stop/start instrumenting code
HYPER_DISABLE_INSTRUMENTATION = 0,
HYPER_ENABLE_INSTRUMENTATION = 1,
// Write 0 in *(char *)arg if the p-tool is sequential. The Cilk runtime
// system invokes this metacall to know whether to spawn worker threads.
HYPER_ZERO_IF_SEQUENTIAL_PTOOL = 2,
// Write 0 in *(char *)arg if the runtime must force reducers to
// call the reduce() method even if no actual stealing occurs.
HYPER_ZERO_IF_FORCE_REDUCE = 3,
// Inform cilkscreen about the current stack pointer.
HYPER_ESTABLISH_C_STACK = 4,
// Inform Cilkscreen about the current worker
HYPER_ESTABLISH_WORKER = 5,
// Tell tools to ignore a block of memory. Parameter is a 2 element
// array: void *block[2] = {_begin, _end}; _end is 1 beyond the end
// of the block to be ignored. Essentially, if p is a pointer to an
// array, _begin = &p[0], _end = &p[max]
HYPER_IGNORE_MEMORY_BLOCK = 6
// If you add metacalls here, remember to update BOTH workspan.cpp AND
// cilkscreen-common.cpp!
};
typedef struct
{
unsigned int tool; // Specifies tool metacall is for
// (eg. system=0, cilkscreen=1, cilkview=2).
// All tools should understand system codes.
// Tools should ignore all other codes, except
// their own.
unsigned int code; // Tool-specific code specifies what to do and how to
// interpret data
void *data;
} metacall_data_t;
#define METACALL_TOOL_SYSTEM 0
///////////////////////////////////////////////////////////////////////////////
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