1 //===-- Process.cpp - Implement OS Process Concept --------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This header file implements the operating system Process concept.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Config/config.h"
15 #include "llvm/Support/Process.h"
16 #include "llvm/Support/ErrorHandling.h"
21 //===----------------------------------------------------------------------===//
22 //=== WARNING: Implementation here must contain only TRULY operating system
23 //=== independent code.
24 //===----------------------------------------------------------------------===//
26 // Empty virtual destructor to anchor the vtable for the process class.
27 process::~process() {}
29 self_process *process::get_self() {
30 // Use a function local static for thread safe initialization and allocate it
31 // as a raw pointer to ensure it is never destroyed.
32 static self_process *SP = new self_process();
38 // Visual Studio complains that the self_process destructor never exits. This
39 // doesn't make much sense, as that's the whole point of calling abort... Just
40 // silence this warning.
42 #pragma warning(disable:4722)
45 // The destructor for the self_process subclass must never actually be
46 // executed. There should be at most one instance of this class, and that
47 // instance should live until the process terminates to avoid the potential for
48 // racy accesses during shutdown.
49 self_process::~self_process() {
50 assert(TempDirectory->exists() && "Who has removed TempDirectory?");
51 llvm_unreachable("This destructor must never be executed!");
60 // Include the platform-specific parts of this class.
62 #include "Unix/Process.inc"
65 #include "Windows/Process.inc"