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For PR351:

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* Consolidate implementation for Unix systems into Unix/Memory.cpp
* Avoid use of symbolic link to #include platform-specific implementation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19152 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-12-27 06:15:57 +00:00
parent b9ed2c17da
commit ce7999598a
8 changed files with 7 additions and 407 deletions
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55
lib/System/AIX/Memory.cpp
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@ -1,55 +0,0 @@
//===- AIX/Memory.cpp - AIX Memory 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 AIX specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "../Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <sys/types.h>
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only AIX specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (pa == (void*)-1) {
throw std::string("Can't allocate RWX Memory: ") + strerror(errno);
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
throw std::string("Can't release RWX Memory: ") + strerror(errno);
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

55
lib/System/Cygwin/Memory.cpp
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@ -1,55 +0,0 @@
//===- Cygwin/Memory.cpp - Cygwin Memory 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 Cygwin specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <sys/types.h>
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only Cygwin specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (pa == (void*)-1) {
throw std::string("Can't allocate RWX Memory: ") + strerror(errno);
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
throw std::string("Can't release RWX Memory: ") + strerror(errno);
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

63
lib/System/Darwin/Memory.cpp
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@ -1,63 +0,0 @@
//===- Darwin/Memory.cpp - Darwin Memory 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 Darwin specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "../Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only Darwin-specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
/// AllocateRWXMemory - Allocate a slab of memory with read/write/execute
/// permissions. This is typically used for JIT applications where we want
/// to emit code to the memory and then jump to it. Getting this type of memory
/// is very OS-specific.
///
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANON, -1, 0);
if (pa == MAP_FAILED) {
char msg[MAXPATHLEN];
strerror_r(errno, msg, MAXPATHLEN-1);
throw std::string("Can't allocate RWX Memory: ") + msg;
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
char msg[MAXPATHLEN];
strerror_r(errno, msg, MAXPATHLEN-1);
throw std::string("Can't release RWX Memory: ") + msg;
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

55
lib/System/FreeBSD/Memory.cpp
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@ -1,55 +0,0 @@
//===- FreeBSD/Memory.cpp - FreeBSD Memory 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 FreeBSD specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "../Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only FreeBSD specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANON|MAP_NOCORE, -1, 0);
if (pa == (void*)-1) {
throw std::string("Can't allocate RWX Memory: ") + strerror(errno);
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
throw std::string("Can't release RWX Memory: ") + strerror(errno);
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

60
lib/System/Interix/Memory.cpp
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@ -1,60 +0,0 @@
//===- Interix/Memory.cpp - Interix Memory 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 Interix specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "../Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <fcntl.h>
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only Interix specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
int fd = open("/dev/zero", O_RDWR);
if (fd == -1) {
throw std::string("Can't open /dev/zero device: ") + strerror(errno);
}
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_SHARED, fd, 0);
if (pa == (void*)-1) {
throw std::string("Can't allocate RWX Memory: ") + strerror(errno);
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
throw std::string("Can't release RWX Memory: ") + strerror(errno);
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

63
lib/System/Linux/Memory.cpp
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@ -1,63 +0,0 @@
//===- Linux/Memory.cpp - Linux Memory 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 Linux specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "../Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only Linux specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
/// AllocateRWXMemory - Allocate a slab of memory with read/write/execute
/// permissions. This is typically used for JIT applications where we want
/// to emit code to the memory then jump to it. Getting this type of memory
/// is very OS specific.
///
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, 0, 0);
if (pa == MAP_FAILED) {
char msg[MAXPATHLEN];
strerror_r(errno, msg, MAXPATHLEN-1);
throw std::string("Can't allocate RWX Memory: ") + msg;
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
char msg[MAXPATHLEN];
strerror_r(errno, msg, MAXPATHLEN-1);
throw std::string("Can't release RWX Memory: ") + msg;
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

8
lib/System/Memory.cpp
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@ -13,6 +13,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/System/Memory.h"
#include "llvm/Config/config.h"
namespace llvm {
using namespace sys;
@ -25,6 +26,11 @@ using namespace sys;
}
// Include the platform-specific parts of this class.
#include "platform/Memory.cpp"
#ifdef LLVM_ON_UNIX
#include "Unix/Memory.cpp"
#endif
#ifdef LLVM_ON_WIN32
#include "Win32/Memory.cpp"
#endif
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab

55
lib/System/SunOS/Memory.cpp
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@ -1,55 +0,0 @@
//===- SunOS/Memory.cpp - SunOS Memory 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 SunOS specific implementation of various Memory
// management utilities
//
//===----------------------------------------------------------------------===//
// Include the generic unix implementation
#include "../Unix/Memory.cpp"
#include "llvm/System/Process.h"
#include <sys/types.h>
#include <sys/mman.h>
namespace llvm {
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only SunOS specific code
//=== and must not be generic UNIX code (see ../Unix/Memory.cpp)
//===----------------------------------------------------------------------===//
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
void *pa = mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (pa == (void*)-1) {
throw std::string("Can't allocate RWX Memory: ") + strerror(errno);
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != munmap(M.Address, M.Size)) {
throw std::string("Can't release RWX Memory: ") + strerror(errno);
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab