mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-03 14:21:30 +00:00
9eb59ec548
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22520 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
4.1 KiB
C++
104 lines
4.1 KiB
C++
//===- llvm/System/Process.h ------------------------------------*- 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 declares the llvm::sys::Process class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SYSTEM_PROCESS_H
|
|
#define LLVM_SYSTEM_PROCESS_H
|
|
|
|
#include "llvm/System/TimeValue.h"
|
|
|
|
namespace llvm {
|
|
namespace sys {
|
|
|
|
/// This class provides an abstraction for getting information about the
|
|
/// currently executing process.
|
|
/// @since 1.4
|
|
/// @brief An abstraction for operating system processes.
|
|
class Process {
|
|
/// @name Accessors
|
|
/// @{
|
|
public:
|
|
/// This static function will return the operating system's virtual memory
|
|
/// page size.
|
|
/// @returns The number of bytes in a virtual memory page.
|
|
/// @throws nothing
|
|
/// @brief Get the virtual memory page size
|
|
static unsigned GetPageSize();
|
|
|
|
/// This static function will return the total amount of memory allocated
|
|
/// by the process. This only counts the memory allocated via the malloc,
|
|
/// calloc and realloc functions and includes any "free" holes in the
|
|
/// allocated space.
|
|
/// @throws nothing
|
|
/// @brief Return process memory usage.
|
|
static size_t GetMallocUsage();
|
|
|
|
/// This static function will return the total memory usage of the
|
|
/// process. This includes code, data, stack and mapped pages usage. Notei
|
|
/// that the value returned here is not necessarily the Running Set Size,
|
|
/// it is the total virtual memory usage, regardless of mapped state of
|
|
/// that memory.
|
|
static size_t GetTotalMemoryUsage();
|
|
|
|
/// This static function will set \p user_time to the amount of CPU time
|
|
/// spent in user (non-kernel) mode and \p sys_time to the amount of CPU
|
|
/// time spent in system (kernel) mode. If the operating system does not
|
|
/// support collection of these metrics, a zero TimeValue will be for both
|
|
/// values.
|
|
static void GetTimeUsage(
|
|
TimeValue& elapsed,
|
|
///< Returns the TimeValue::now() giving current time
|
|
TimeValue& user_time,
|
|
///< Returns the current amount of user time for the process
|
|
TimeValue& sys_time
|
|
///< Returns the current amount of system time for the process
|
|
);
|
|
|
|
/// This static function will return the process' current user id number.
|
|
/// Not all operating systems support this feature. Where it is not
|
|
/// supported, the function should return 65536 as the value.
|
|
static int GetCurrentUserId();
|
|
|
|
/// This static function will return the process' current group id number.
|
|
/// Not all operating systems support this feature. Where it is not
|
|
/// supported, the function should return 65536 as the value.
|
|
static int GetCurrentGroupId();
|
|
|
|
/// This function makes the necessary calls to the operating system to
|
|
/// prevent core files or any other kind of large memory dumps that can
|
|
/// occur when a program fails.
|
|
/// @brief Prevent core file generation.
|
|
static void PreventCoreFiles();
|
|
|
|
/// This function determines if the standard input is connected directly
|
|
/// to a user's input (keyboard probably), rather than coming from a file
|
|
/// or pipe.
|
|
static bool StandardInIsUserInput();
|
|
|
|
/// This function determines if the standard output is connected to a
|
|
/// "tty" or "console" window. That is, the output would be displayed to
|
|
/// the user rather than being put on a pipe or stored in a file.
|
|
static bool StandardOutIsDisplayed();
|
|
|
|
/// This function determines if the standard error is connected to a
|
|
/// "tty" or "console" window. That is, the output would be displayed to
|
|
/// the user rather than being put on a pipe or stored in a file.
|
|
static bool StandardErrIsDisplayed();
|
|
|
|
/// @}
|
|
};
|
|
}
|
|
}
|
|
|
|
|
|
#endif
|