gem5/base/sched_list.hh
Steve Reinhardt ad8b9636f8 Many files:
Update copyright dates and author list

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arch/alpha/alpha_linux_process.cc:
arch/alpha/alpha_linux_process.hh:
arch/alpha/alpha_memory.cc:
arch/alpha/alpha_memory.hh:
arch/alpha/alpha_tru64_process.cc:
arch/alpha/alpha_tru64_process.hh:
arch/alpha/aout_machdep.h:
arch/alpha/arguments.cc:
arch/alpha/arguments.hh:
arch/alpha/ev5.cc:
arch/alpha/ev5.hh:
arch/alpha/faults.cc:
arch/alpha/faults.hh:
arch/alpha/isa_desc:
arch/alpha/isa_traits.hh:
arch/alpha/osfpal.cc:
arch/alpha/osfpal.hh:
arch/alpha/pseudo_inst.cc:
arch/alpha/pseudo_inst.hh:
arch/alpha/vptr.hh:
arch/alpha/vtophys.cc:
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base/bitfield.hh:
base/callback.hh:
base/circlebuf.cc:
base/circlebuf.hh:
base/cprintf.cc:
base/cprintf.hh:
base/cprintf_formats.hh:
base/crc.hh:
base/date.cc:
base/dbl_list.hh:
base/endian.hh:
base/fast_alloc.cc:
base/fast_alloc.hh:
base/fifo_buffer.cc:
base/fifo_buffer.hh:
base/hashmap.hh:
base/hostinfo.cc:
base/hostinfo.hh:
base/hybrid_pred.cc:
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base/inet.cc:
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base/inifile.cc:
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base/intmath.cc:
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base/match.cc:
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base/misc.cc:
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base/mod_num.hh:
base/mysql.cc:
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base/refcnt.hh:
base/remote_gdb.cc:
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base/res_list.hh:
base/sat_counter.cc:
base/sat_counter.hh:
base/sched_list.hh:
base/socket.cc:
base/socket.hh:
base/statistics.cc:
base/statistics.hh:
base/compression/lzss_compression.cc:
base/compression/lzss_compression.hh:
base/compression/null_compression.hh:
base/loader/aout_object.cc:
base/loader/aout_object.hh:
base/loader/ecoff_object.cc:
base/loader/ecoff_object.hh:
base/loader/elf_object.cc:
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base/loader/object_file.cc:
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base/loader/symtab.cc:
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base/stats/events.cc:
base/stats/events.hh:
base/stats/flags.hh:
base/stats/mysql.cc:
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base/stats/mysql_run.hh:
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base/stats/statdb.cc:
base/stats/statdb.hh:
base/stats/text.cc:
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base/stats/types.hh:
base/stats/visit.cc:
base/stats/visit.hh:
base/str.cc:
base/str.hh:
base/time.cc:
base/time.hh:
base/timebuf.hh:
base/trace.cc:
base/trace.hh:
base/userinfo.cc:
base/userinfo.hh:
build/SConstruct:
cpu/base.cc:
cpu/base.hh:
cpu/base_dyn_inst.cc:
cpu/base_dyn_inst.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/exetrace.cc:
cpu/exetrace.hh:
cpu/inst_seq.hh:
cpu/intr_control.cc:
cpu/intr_control.hh:
cpu/memtest/memtest.cc:
cpu/pc_event.cc:
cpu/pc_event.hh:
cpu/smt.hh:
cpu/static_inst.cc:
cpu/static_inst.hh:
cpu/memtest/memtest.hh:
cpu/o3/sat_counter.cc:
cpu/o3/sat_counter.hh:
cpu/ozone/cpu.hh:
cpu/simple/cpu.cc:
cpu/simple/cpu.hh:
cpu/trace/opt_cpu.cc:
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cpu/trace/reader/ibm_reader.cc:
cpu/trace/reader/ibm_reader.hh:
cpu/trace/reader/itx_reader.cc:
cpu/trace/reader/itx_reader.hh:
cpu/trace/reader/m5_reader.cc:
cpu/trace/reader/m5_reader.hh:
cpu/trace/reader/mem_trace_reader.cc:
cpu/trace/reader/mem_trace_reader.hh:
cpu/trace/trace_cpu.cc:
cpu/trace/trace_cpu.hh:
dev/alpha_access.h:
dev/alpha_console.cc:
dev/alpha_console.hh:
dev/baddev.cc:
dev/baddev.hh:
dev/disk_image.cc:
dev/disk_image.hh:
dev/etherbus.cc:
dev/etherbus.hh:
dev/etherdump.cc:
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dev/etherint.cc:
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dev/pciconfigall.cc:
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dev/pcireg.h:
dev/pktfifo.cc:
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dev/platform.cc:
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dev/simconsole.cc:
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dev/simple_disk.cc:
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dev/sinic.cc:
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dev/tsunami.cc:
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dev/uart8250.cc:
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docs/stl.hh:
encumbered/cpu/full/op_class.hh:
kern/kernel_stats.cc:
kern/kernel_stats.hh:
kern/linux/linux.hh:
kern/linux/linux_syscalls.cc:
kern/linux/linux_syscalls.hh:
kern/linux/linux_system.cc:
kern/linux/linux_system.hh:
kern/linux/linux_threadinfo.hh:
kern/linux/printk.cc:
kern/linux/printk.hh:
kern/system_events.cc:
kern/system_events.hh:
kern/tru64/dump_mbuf.cc:
kern/tru64/dump_mbuf.hh:
kern/tru64/mbuf.hh:
kern/tru64/printf.cc:
kern/tru64/printf.hh:
kern/tru64/tru64.hh:
kern/tru64/tru64_events.cc:
kern/tru64/tru64_events.hh:
kern/tru64/tru64_syscalls.cc:
kern/tru64/tru64_syscalls.hh:
kern/tru64/tru64_system.cc:
kern/tru64/tru64_system.hh:
python/SConscript:
python/m5/__init__.py:
python/m5/config.py:
python/m5/convert.py:
python/m5/multidict.py:
python/m5/smartdict.py:
sim/async.hh:
sim/builder.cc:
sim/builder.hh:
sim/debug.cc:
sim/debug.hh:
sim/eventq.cc:
sim/eventq.hh:
sim/host.hh:
sim/main.cc:
sim/param.cc:
sim/param.hh:
sim/process.cc:
sim/process.hh:
sim/root.cc:
sim/serialize.cc:
sim/serialize.hh:
sim/sim_events.cc:
sim/sim_events.hh:
sim/sim_exit.hh:
sim/sim_object.cc:
sim/sim_object.hh:
sim/startup.cc:
sim/startup.hh:
sim/stat_control.cc:
sim/stat_control.hh:
sim/stats.hh:
sim/syscall_emul.cc:
sim/syscall_emul.hh:
sim/system.cc:
sim/system.hh:
test/bitvectest.cc:
test/circletest.cc:
test/cprintftest.cc:
test/genini.py:
test/initest.cc:
test/lru_test.cc:
test/nmtest.cc:
test/offtest.cc:
test/paramtest.cc:
test/rangetest.cc:
test/sized_test.cc:
test/stattest.cc:
test/strnumtest.cc:
test/symtest.cc:
test/tokentest.cc:
test/tracetest.cc:
util/ccdrv/devtime.c:
util/m5/m5.c:
util/oprofile-top.py:
util/rundiff:
util/m5/m5op.h:
util/m5/m5op.s:
util/stats/db.py:
util/stats/dbinit.py:
util/stats/display.py:
util/stats/info.py:
util/stats/print.py:
util/stats/stats.py:
util/tap/tap.cc:
    Update copyright dates and author list

--HG--
extra : convert_revision : 0faba08fc0fc0146f1efb7f61e4b043c020ff9e4
2005-06-05 05:16:00 -04:00

176 lines
4.2 KiB
C++

/*
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* 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 the copyright holders 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 SCHED_LIST_HH
#define SCHED_LIST_HH
#include <list>
#include "base/misc.hh"
// Any types you use this class for must be covered here...
namespace {
void ClearEntry(int &i) { i = 0; };
void ClearEntry(unsigned &i) { i = 0; };
void ClearEntry(double &i) { i = 0; };
template <class T> void ClearEntry(std::list<T> &l) { l.clear(); };
};
//
// this is a special list type that allows the user to insert elements at a
// specified positive offset from the "current" element, but only allow them
// be extracted from the "current" element
//
template <class T>
class SchedList
{
T *data_array;
unsigned position;
unsigned size;
unsigned mask;
public:
SchedList(unsigned size);
SchedList(void);
void init(unsigned size);
T &operator[](unsigned offset);
void advance(void);
void clear(void);
};
//
// Constructor
//
template<class T>
SchedList<T>::SchedList(unsigned _size)
{
size = _size;
// size must be a power of two
if (size & (size-1)) {
panic("SchedList: size must be a power of two");
}
if (size < 2) {
panic("SchedList: you don't want a list that small");
}
// calculate the bit mask for the modulo operation
mask = size - 1;
data_array = new T[size];
if (!data_array) {
panic("SchedList: could not allocate memory");
}
clear();
}
template<class T>
SchedList<T>::SchedList(void)
{
data_array = 0;
size = 0;
}
template<class T> void
SchedList<T>::init(unsigned _size)
{
size = _size;
if (!data_array) {
// size must be a power of two
if (size & (size-1)) {
panic("SchedList: size must be a power of two");
}
if (size < 2) {
panic("SchedList: you don't want a list that small");
}
// calculate the bit mask for the modulo operation
mask = size - 1;
data_array = new T[size];
if (!data_array) {
panic("SchedList: could not allocate memory");
}
clear();
}
}
template<class T> void
SchedList<T>::advance(void)
{
ClearEntry(data_array[position]);
// position = (++position % size);
position = ++position & mask;
}
template<class T> void
SchedList<T>::clear(void)
{
for (unsigned i=0; i<size; ++i) {
ClearEntry(data_array[i]);
}
position = 0;
}
template<class T> T&
SchedList<T>::operator[](unsigned offset)
{
if (offset >= size) {
panic("SchedList: can't access element beyond current pointer");
}
// unsigned p = (position + offset) % size;
unsigned p = (position + offset) & mask;
return data_array[p];
}
#endif