mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 22:32:47 +00:00
6b8a63ae58
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21704 91177308-0d34-0410-b5e6-96231b3b80d8
160 lines
4.0 KiB
C++
160 lines
4.0 KiB
C++
//===- Unix/Process.cpp - Unix Process Implementation --------- -*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by Reid Spencer and is distributed under the
|
|
// University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file provides the generic Unix implementation of the Process class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Unix.h"
|
|
#ifdef HAVE_SYS_TIME_H
|
|
#include <sys/time.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_RESOURCE_H
|
|
#include <sys/resource.h>
|
|
#endif
|
|
#ifdef HAVE_MALLOC_H
|
|
#include <malloc.h>
|
|
#endif
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
//=== WARNING: Implementation here must contain only generic UNIX code that
|
|
//=== is guaranteed to work on *all* UNIX variants.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
namespace llvm {
|
|
using namespace sys;
|
|
|
|
unsigned
|
|
Process::GetPageSize()
|
|
{
|
|
#if defined(HAVE_GETPAGESIZE)
|
|
static const int page_size = ::getpagesize();
|
|
#elif defined(HAVE_SYSCONF)
|
|
static long page_size = ::sysconf(_SC_PAGE_SIZE);
|
|
#else
|
|
#warning Cannot get the page size on this machine
|
|
#endif
|
|
return static_cast<unsigned>(page_size);
|
|
}
|
|
|
|
#if defined(HAVE_SBRK)
|
|
static char* som = reinterpret_cast<char*>(::sbrk(0));
|
|
#endif
|
|
|
|
size_t
|
|
Process::GetMallocUsage()
|
|
{
|
|
#if defined(HAVE_MALLINFO)
|
|
struct mallinfo mi;
|
|
mi = ::mallinfo();
|
|
return mi.uordblks;
|
|
#elif defined(HAVE_SBRK)
|
|
// Note this is only an approximation and more closely resembles
|
|
// the value returned by mallinfo in the arena field.
|
|
char * eom = (char*) sbrk(0);
|
|
if (eom != ((char*)-1) && som != ((char*)-1))
|
|
return eom - som;
|
|
else
|
|
return 0;
|
|
#else
|
|
#warning Cannot get malloc info on this platform
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
size_t
|
|
Process::GetTotalMemoryUsage()
|
|
{
|
|
#if defined(HAVE_MALLINFO)
|
|
struct mallinfo mi = ::mallinfo();
|
|
return mi.uordblks + mi.hblkhd;
|
|
#elif defined(HAVE_GETRUSAGE)
|
|
struct rusage usage;
|
|
::getrusage(RUSAGE_SELF, &usage);
|
|
return usage.ru_maxrss;
|
|
#else
|
|
#warning Cannot get total memory size on this platform
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
Process::GetTimeUsage(TimeValue& elapsed, TimeValue& user_time,
|
|
TimeValue& sys_time)
|
|
{
|
|
elapsed = TimeValue::now();
|
|
#if defined(HAVE_GETRUSAGE)
|
|
struct rusage usage;
|
|
::getrusage(RUSAGE_SELF, &usage);
|
|
user_time = TimeValue(
|
|
static_cast<TimeValue::SecondsType>( usage.ru_utime.tv_sec ),
|
|
static_cast<TimeValue::NanoSecondsType>( usage.ru_utime.tv_usec *
|
|
TimeValue::NANOSECONDS_PER_MICROSECOND ) );
|
|
sys_time = TimeValue(
|
|
static_cast<TimeValue::SecondsType>( usage.ru_stime.tv_sec ),
|
|
static_cast<TimeValue::NanoSecondsType>( usage.ru_stime.tv_usec *
|
|
TimeValue::NANOSECONDS_PER_MICROSECOND ) );
|
|
#else
|
|
#warning Cannot get usage times on this platform
|
|
user_time.seconds(0);
|
|
user_time.microseconds(0);
|
|
sys_time.seconds(0);
|
|
sys_time.microseconds(0);
|
|
#endif
|
|
}
|
|
|
|
int Process::GetCurrentUserId()
|
|
{
|
|
return getuid();
|
|
}
|
|
|
|
int Process::GetCurrentGroupId()
|
|
{
|
|
return getgid();
|
|
}
|
|
|
|
// Some LLVM programs such as bugpoint produce core files as a normal part of
|
|
// their operation. To prevent the disk from filling up, this function
|
|
// does what's necessary to prevent their generation.
|
|
void Process::PreventCoreFiles() {
|
|
#if HAVE_SETRLIMIT
|
|
struct rlimit rlim;
|
|
rlim.rlim_cur = rlim.rlim_max = 0;
|
|
int res = setrlimit(RLIMIT_CORE, &rlim);
|
|
if (res != 0)
|
|
ThrowErrno("Can't prevent core file generation");
|
|
#endif
|
|
}
|
|
|
|
bool Process::StandardInIsUserInput() {
|
|
#if HAVE_ISATTY
|
|
return isatty(0);
|
|
#endif
|
|
// If we don't have isatty, just return false.
|
|
return false;
|
|
}
|
|
|
|
bool Process::StandardOutIsDisplayed() {
|
|
#if HAVE_ISATTY
|
|
return isatty(1);
|
|
#endif
|
|
// If we don't have isatty, just return false.
|
|
return false;
|
|
}
|
|
|
|
bool Process::StandardErrIsDisplayed() {
|
|
#if HAVE_ISATTY
|
|
return isatty(2);
|
|
#endif
|
|
// If we don't have isatty, just return false.
|
|
return false;
|
|
}
|
|
|
|
}
|