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-rw-r--r--lib/System/Unix/Process.inc295
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diff --git a/lib/System/Unix/Process.inc b/lib/System/Unix/Process.inc
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-//===- Unix/Process.cpp - Unix Process Implementation --------- -*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file 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
-// DragonFly BSD has deprecated <malloc.h> for <stdlib.h> instead,
-// Unix.h includes this for us already.
-#if defined(HAVE_MALLOC_H) && !defined(__DragonFly__)
-#include <malloc.h>
-#endif
-#ifdef HAVE_MALLOC_MALLOC_H
-#include <malloc/malloc.h>
-#endif
-#ifdef HAVE_SYS_IOCTL_H
-# include <sys/ioctl.h>
-#endif
-#ifdef HAVE_TERMIOS_H
-# include <termios.h>
-#endif
-
-//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only generic UNIX code that
-//=== is guaranteed to work on *all* UNIX variants.
-//===----------------------------------------------------------------------===//
-
-using namespace llvm;
-using namespace sys;
-
-unsigned
-Process::GetPageSize()
-{
-#if defined(__CYGWIN__)
- // On Cygwin, getpagesize() returns 64k but the page size for the purposes of
- // memory protection and mmap() is 4k.
- // See http://www.cygwin.com/ml/cygwin/2009-01/threads.html#00492
- const int page_size = 0x1000;
-#elif defined(HAVE_GETPAGESIZE)
- const int page_size = ::getpagesize();
-#elif defined(HAVE_SYSCONF)
- long page_size = ::sysconf(_SC_PAGE_SIZE);
-#else
-#warning Cannot get the page size on this machine
-#endif
- return static_cast<unsigned>(page_size);
-}
-
-size_t Process::GetMallocUsage() {
-#if defined(HAVE_MALLINFO)
- struct mallinfo mi;
- mi = ::mallinfo();
- return mi.uordblks;
-#elif defined(HAVE_MALLOC_ZONE_STATISTICS) && defined(HAVE_MALLOC_MALLOC_H)
- malloc_statistics_t Stats;
- malloc_zone_statistics(malloc_default_zone(), &Stats);
- return Stats.size_in_use; // darwin
-#elif defined(HAVE_SBRK)
- // Note this is only an approximation and more closely resembles
- // the value returned by mallinfo in the arena field.
- static char *StartOfMemory = reinterpret_cast<char*>(::sbrk(0));
- char *EndOfMemory = (char*)sbrk(0);
- if (EndOfMemory != ((char*)-1) && StartOfMemory != ((char*)-1))
- return EndOfMemory - StartOfMemory;
- 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_MALLOC_ZONE_STATISTICS) && defined(HAVE_MALLOC_MALLOC_H)
- malloc_statistics_t Stats;
- malloc_zone_statistics(malloc_default_zone(), &Stats);
- return Stats.size_allocated; // darwin
-#elif defined(HAVE_GETRUSAGE) && !defined(__HAIKU__)
- 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();
-}
-
-#ifdef HAVE_MACH_MACH_H
-#include <mach/mach.h>
-#endif
-
-// 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;
- setrlimit(RLIMIT_CORE, &rlim);
-#endif
-
-#ifdef HAVE_MACH_MACH_H
- // Disable crash reporting on Mac OS X 10.0-10.4
-
- // get information about the original set of exception ports for the task
- mach_msg_type_number_t Count = 0;
- exception_mask_t OriginalMasks[EXC_TYPES_COUNT];
- exception_port_t OriginalPorts[EXC_TYPES_COUNT];
- exception_behavior_t OriginalBehaviors[EXC_TYPES_COUNT];
- thread_state_flavor_t OriginalFlavors[EXC_TYPES_COUNT];
- kern_return_t err =
- task_get_exception_ports(mach_task_self(), EXC_MASK_ALL, OriginalMasks,
- &Count, OriginalPorts, OriginalBehaviors,
- OriginalFlavors);
- if (err == KERN_SUCCESS) {
- // replace each with MACH_PORT_NULL.
- for (unsigned i = 0; i != Count; ++i)
- task_set_exception_ports(mach_task_self(), OriginalMasks[i],
- MACH_PORT_NULL, OriginalBehaviors[i],
- OriginalFlavors[i]);
- }
-
- // Disable crash reporting on Mac OS X 10.5
- signal(SIGABRT, _exit);
- signal(SIGILL, _exit);
- signal(SIGFPE, _exit);
- signal(SIGSEGV, _exit);
- signal(SIGBUS, _exit);
-#endif
-}
-
-bool Process::StandardInIsUserInput() {
- return FileDescriptorIsDisplayed(STDIN_FILENO);
-}
-
-bool Process::StandardOutIsDisplayed() {
- return FileDescriptorIsDisplayed(STDOUT_FILENO);
-}
-
-bool Process::StandardErrIsDisplayed() {
- return FileDescriptorIsDisplayed(STDERR_FILENO);
-}
-
-bool Process::FileDescriptorIsDisplayed(int fd) {
-#if HAVE_ISATTY
- return isatty(fd);
-#else
- // If we don't have isatty, just return false.
- return false;
-#endif
-}
-
-static unsigned getColumns(int FileID) {
- // If COLUMNS is defined in the environment, wrap to that many columns.
- if (const char *ColumnsStr = std::getenv("COLUMNS")) {
- int Columns = std::atoi(ColumnsStr);
- if (Columns > 0)
- return Columns;
- }
-
- unsigned Columns = 0;
-
-#if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_TERMIOS_H)
- // Try to determine the width of the terminal.
- struct winsize ws;
- if (ioctl(FileID, TIOCGWINSZ, &ws) == 0)
- Columns = ws.ws_col;
-#endif
-
- return Columns;
-}
-
-unsigned Process::StandardOutColumns() {
- if (!StandardOutIsDisplayed())
- return 0;
-
- return getColumns(1);
-}
-
-unsigned Process::StandardErrColumns() {
- if (!StandardErrIsDisplayed())
- return 0;
-
- return getColumns(2);
-}
-
-static bool terminalHasColors() {
- if (const char *term = std::getenv("TERM")) {
- // Most modern terminals support ANSI escape sequences for colors.
- // We could check terminfo, or have a list of known terms that support
- // colors, but that would be overkill.
- // The user can always ask for no colors by setting TERM to dumb, or
- // using a commandline flag.
- return strcmp(term, "dumb") != 0;
- }
- return false;
-}
-
-bool Process::StandardOutHasColors() {
- if (!StandardOutIsDisplayed())
- return false;
- return terminalHasColors();
-}
-
-bool Process::StandardErrHasColors() {
- if (!StandardErrIsDisplayed())
- return false;
- return terminalHasColors();
-}
-
-bool Process::ColorNeedsFlush() {
- // No, we use ANSI escape sequences.
- return false;
-}
-
-#define COLOR(FGBG, CODE, BOLD) "\033[0;" BOLD FGBG CODE "m"
-
-#define ALLCOLORS(FGBG,BOLD) {\
- COLOR(FGBG, "0", BOLD),\
- COLOR(FGBG, "1", BOLD),\
- COLOR(FGBG, "2", BOLD),\
- COLOR(FGBG, "3", BOLD),\
- COLOR(FGBG, "4", BOLD),\
- COLOR(FGBG, "5", BOLD),\
- COLOR(FGBG, "6", BOLD),\
- COLOR(FGBG, "7", BOLD)\
- }
-
-static const char colorcodes[2][2][8][10] = {
- { ALLCOLORS("3",""), ALLCOLORS("3","1;") },
- { ALLCOLORS("4",""), ALLCOLORS("4","1;") }
-};
-
-const char *Process::OutputColor(char code, bool bold, bool bg) {
- return colorcodes[bg?1:0][bold?1:0][code&7];
-}
-
-const char *Process::OutputBold(bool bg) {
- return "\033[1m";
-}
-
-const char *Process::ResetColor() {
- return "\033[0m";
-}
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