gem5/sim/process.cc
Nathan Binkert 25a358983a Major stats package cleanup
Add support for generic visitors for stats and use them
to implement independent output functions.

Support for mysql output and some initial code for hacking
on mysql output with python

arch/alpha/pseudo_inst.cc:
base/hybrid_pred.cc:
base/hybrid_pred.hh:
base/sat_counter.cc:
base/sat_counter.hh:
cpu/simple_cpu/simple_cpu.cc:
kern/tru64/tru64_events.cc:
sim/main.cc:
sim/process.cc:
sim/process.hh:
sim/sim_events.cc:
sim/sim_object.cc:
sim/system.hh:
    update for changes in stats package
base/statistics.cc:
    move the python output code to base/stats/puthon.(cc|hh)
    and reimplement it as a visitor.

    move the text output code to base/stats/text.(cc|hh) and
    reimplement it as a visitor.

    move the database stuff into base/stats/statdb.(cc|hh) and
    get rid of the class.  Put everything as globals in the
    Statistics::Database namespace.

    allocate unique ids for all stats.

    directly implement the check routine and get rid of the
    various dumping routines since they're now in separate files.

    make sure that no two stats have the same name

    clean up some loops
base/statistics.hh:
    major changes to the statistics package again

    lots of code was factored out of statistics.hh into several
    separate files in base/stats/ (this will continue)

    There are now two Stat package types Result and Counter that
    are specified to allow the user to keep the counted type
    separate from the result type.  They are currently both doubles
    but that's an experiment.  There is no more per stat ability to
    set the type.  Statistics::Counter is not the same as Counter!

    Implement a visitor for statistics output so that new output
    types can be implemented independently from the stats package
    itself.

    Add a unique id to each stat so that it can be used to keep
    track of stats more simply.  This number can also be used in
    debugging problems with stats.

    Tweak the bucket size stuff a bit to make it work better.

    fixed VectorDist size bug
cpu/memtest/memtest.cc:
    Fix up for changes in stats package
    Don't use value() since it doesn't work with binning.  If you
    want a number as a stat, and to use it in the program itself,
    you really want two separate variables, one that's a stat,
    and one that's not.
cpu/memtest/memtest.hh:
    Fix up for changes in stats package
test/Makefile:
    Try to build stuff now that directories matter
test/stattest.cc:
    test all new output types
    choose which one with command line options

--HG--
extra : convert_revision : e3a3f5f0828c67c0e2de415d936ad240adaddc89
2004-05-04 17:01:00 -04:00

406 lines
12 KiB
C++

/*
* Copyright (c) 2003 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.
*/
#include <unistd.h>
#include <fcntl.h>
#include <cstdio>
#include <string>
#include "base/intmath.hh"
#include "base/loader/object_file.hh"
#include "base/statistics.hh"
#include "cpu/exec_context.hh"
#include "cpu/full_cpu/smt.hh"
#include "cpu/full_cpu/thread.hh"
#include "eio/eio.hh"
#include "mem/functional_mem/main_memory.hh"
#include "sim/builder.hh"
#include "sim/fake_syscall.hh"
#include "sim/process.hh"
#include "sim/stats.hh"
#ifdef TARGET_ALPHA
#include "arch/alpha/alpha_tru64_process.hh"
#include "arch/alpha/alpha_linux_process.hh"
#endif
using namespace std;
//
// The purpose of this code is to fake the loader & syscall mechanism
// when there's no OS: thus there's no resone to use it in FULL_SYSTEM
// mode when we do have an OS
//
#ifdef FULL_SYSTEM
#error "process.cc not compatible with FULL_SYSTEM"
#endif
// current number of allocated processes
int num_processes = 0;
Process::Process(const string &name,
int stdin_fd, // initial I/O descriptors
int stdout_fd,
int stderr_fd)
: SimObject(name)
{
// allocate memory space
memory = new MainMemory(name + ".MainMem");
// allocate initial register file
init_regs = new RegFile;
memset(init_regs, 0, sizeof(RegFile));
// initialize first 3 fds (stdin, stdout, stderr)
fd_map[STDIN_FILENO] = stdin_fd;
fd_map[STDOUT_FILENO] = stdout_fd;
fd_map[STDERR_FILENO] = stderr_fd;
// mark remaining fds as free
for (int i = 3; i <= MAX_FD; ++i) {
fd_map[i] = -1;
}
num_syscalls = 0;
// other parameters will be initialized when the program is loaded
}
void
Process::regStats()
{
using namespace Statistics;
num_syscalls
.name(name() + ".PROG:num_syscalls")
.desc("Number of system calls")
;
}
//
// static helper functions
//
int
Process::openInputFile(const string &filename)
{
int fd = open(filename.c_str(), O_RDONLY);
if (fd == -1) {
perror(NULL);
cerr << "unable to open \"" << filename << "\" for reading\n";
fatal("can't open input file");
}
return fd;
}
int
Process::openOutputFile(const string &filename)
{
int fd = open(filename.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0774);
if (fd == -1) {
perror(NULL);
cerr << "unable to open \"" << filename << "\" for writing\n";
fatal("can't open output file");
}
return fd;
}
int
Process::registerExecContext(ExecContext *xc)
{
// add to list
int myIndex = execContexts.size();
execContexts.push_back(xc);
if (myIndex == 0) {
// first exec context for this process... initialize & enable
// copy process's initial regs struct
xc->regs = *init_regs;
// mark this context as active.
// activate with zero delay so that we start ticking right
// away on cycle 0
xc->activate(0);
}
// return CPU number to caller and increment available CPU count
return myIndex;
}
void
Process::replaceExecContext(int xcIndex, ExecContext *xc)
{
if (xcIndex >= execContexts.size()) {
panic("replaceExecContext: bad xcIndex, %d >= %d\n",
xcIndex, execContexts.size());
}
execContexts[xcIndex] = xc;
}
// map simulator fd sim_fd to target fd tgt_fd
void
Process::dup_fd(int sim_fd, int tgt_fd)
{
if (tgt_fd < 0 || tgt_fd > MAX_FD)
panic("Process::dup_fd tried to dup past MAX_FD (%d)", tgt_fd);
fd_map[tgt_fd] = sim_fd;
}
// generate new target fd for sim_fd
int
Process::open_fd(int sim_fd)
{
int free_fd;
// in case open() returns an error, don't allocate a new fd
if (sim_fd == -1)
return -1;
// find first free target fd
for (free_fd = 0; fd_map[free_fd] >= 0; ++free_fd) {
if (free_fd == MAX_FD)
panic("Process::open_fd: out of file descriptors!");
}
fd_map[free_fd] = sim_fd;
return free_fd;
}
// look up simulator fd for given target fd
int
Process::sim_fd(int tgt_fd)
{
if (tgt_fd > MAX_FD)
return -1;
return fd_map[tgt_fd];
}
//
// need to declare these here since there is no concrete Process type
// that can be constructed (i.e., no REGISTER_SIM_OBJECT() macro call,
// which is where these get declared for concrete types).
//
DEFINE_SIM_OBJECT_CLASS_NAME("Process", Process)
////////////////////////////////////////////////////////////////////////
//
// LiveProcess member definitions
//
////////////////////////////////////////////////////////////////////////
static void
copyStringArray(vector<string> &strings, Addr array_ptr, Addr data_ptr,
FunctionalMemory *memory)
{
for (int i = 0; i < strings.size(); ++i) {
memory->access(Write, array_ptr, &data_ptr, sizeof(Addr));
memory->writeString(data_ptr, strings[i].c_str());
array_ptr += sizeof(Addr);
data_ptr += strings[i].size() + 1;
}
// add NULL terminator
data_ptr = 0;
memory->access(Write, array_ptr, &data_ptr, sizeof(Addr));
}
LiveProcess::LiveProcess(const string &name, ObjectFile *objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp)
: Process(name, stdin_fd, stdout_fd, stderr_fd)
{
prog_fname = argv[0];
prog_entry = objFile->entryPoint();
text_base = objFile->textBase();
text_size = objFile->textSize();
data_base = objFile->dataBase();
data_size = objFile->dataSize() + objFile->bssSize();
brk_point = RoundUp<uint64_t>(data_base + data_size, VMPageSize);
// load object file into target memory
objFile->loadSections(memory);
// Set up stack. On Alpha, stack goes below text section. This
// code should get moved to some architecture-specific spot.
stack_base = text_base - (409600+4096);
// Set up region for mmaps. Tru64 seems to start just above 0 and
// grow up from there.
mmap_base = 0x10000;
// Set pointer for next thread stack. Reserve 8M for main stack.
next_thread_stack_base = stack_base - (8 * 1024 * 1024);
// Calculate how much space we need for arg & env arrays.
int argv_array_size = sizeof(Addr) * (argv.size() + 1);
int envp_array_size = sizeof(Addr) * (envp.size() + 1);
int arg_data_size = 0;
for (int i = 0; i < argv.size(); ++i) {
arg_data_size += argv[i].size() + 1;
}
int env_data_size = 0;
for (int i = 0; i < envp.size(); ++i) {
env_data_size += envp[i].size() + 1;
}
int space_needed =
argv_array_size + envp_array_size + arg_data_size + env_data_size;
// for SimpleScalar compatibility
if (space_needed < 16384)
space_needed = 16384;
// set bottom of stack
stack_min = stack_base - space_needed;
// align it
stack_min &= ~7;
stack_size = stack_base - stack_min;
// map out initial stack contents
Addr argv_array_base = stack_min + sizeof(uint64_t); // room for argc
Addr envp_array_base = argv_array_base + argv_array_size;
Addr arg_data_base = envp_array_base + envp_array_size;
Addr env_data_base = arg_data_base + arg_data_size;
// write contents to stack
uint64_t argc = argv.size();
memory->access(Write, stack_min, &argc, sizeof(uint64_t));
copyStringArray(argv, argv_array_base, arg_data_base, memory);
copyStringArray(envp, envp_array_base, env_data_base, memory);
init_regs->intRegFile[ArgumentReg0] = argc;
init_regs->intRegFile[ArgumentReg1] = argv_array_base;
init_regs->intRegFile[StackPointerReg] = stack_min;
init_regs->intRegFile[GlobalPointerReg] = objFile->globalPointer();
init_regs->pc = prog_entry;
init_regs->npc = prog_entry + sizeof(MachInst);
}
LiveProcess *
LiveProcess::create(const string &name,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp)
{
LiveProcess *process = NULL;
ObjectFile *objFile = createObjectFile(argv[0]);
if (objFile == NULL) {
fatal("Can't load object file %s", argv[0]);
}
// check object type & set up syscall emulation pointer
if (objFile->getArch() == ObjectFile::Alpha) {
switch (objFile->getOpSys()) {
case ObjectFile::Tru64:
process = new AlphaTru64Process(name, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
case ObjectFile::Linux:
process = new AlphaLinuxProcess(name, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
default:
fatal("Unknown/unsupported operating system.");
}
} else {
fatal("Unknown object file architecture.");
}
delete objFile;
if (process == NULL)
fatal("Unknown error creating process object.");
return process;
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
VectorParam<string> cmd;
Param<string> input;
Param<string> output;
VectorParam<string> env;
END_DECLARE_SIM_OBJECT_PARAMS(LiveProcess)
BEGIN_INIT_SIM_OBJECT_PARAMS(LiveProcess)
INIT_PARAM(cmd, "command line (executable plus arguments)"),
INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
INIT_PARAM(env, "environment settings")
END_INIT_SIM_OBJECT_PARAMS(LiveProcess)
CREATE_SIM_OBJECT(LiveProcess)
{
// initialize file descriptors to default: same as simulator
int stdin_fd = input.isValid() ? Process::openInputFile(input) : 0;
int stdout_fd = output.isValid() ? Process::openOutputFile(output) : 1;
int stderr_fd = output.isValid() ? stdout_fd : 2;
// dummy for default env
vector<string> null_vec;
// We do this with "temp" because of the bogus compiler warning
// you get with g++ 2.95 -O if you just "return new LiveProcess(..."
LiveProcess *temp = LiveProcess::create(getInstanceName(),
stdin_fd, stdout_fd, stderr_fd,
cmd,
env.isValid() ? env : null_vec);
return temp;
}
REGISTER_SIM_OBJECT("LiveProcess", LiveProcess)