Merge System into Support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Unix/Process.inc b/lib/Support/Unix/Process.inc
new file mode 100644
index 0000000..5cdb11c
--- /dev/null
+++ b/lib/Support/Unix/Process.inc
@@ -0,0 +1,295 @@
+//===- 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";
+}