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authorReid Spencer <rspencer@reidspencer.com>2005-01-09 23:29:00 +0000
committerReid Spencer <rspencer@reidspencer.com>2005-01-09 23:29:00 +0000
commitc892a0db9faab4c36f2276f4675661875b2c84b9 (patch)
treea6c30a9befae0918f0a62d7a354cd339a711c91e /llvm/lib/System/Win32/Memory.inc
parentfde3a212e2f7f983e676d374e9a7bd445071e5d8 (diff)
downloadbcm5719-llvm-c892a0db9faab4c36f2276f4675661875b2c84b9.tar.gz
bcm5719-llvm-c892a0db9faab4c36f2276f4675661875b2c84b9.zip
Rename Unix/*.cpp and Win32/*.cpp to have a *.inc suffix so that the silly
gdb debugger doesn't get confused on which file it is reading (the one in lib/System or the one in lib/System/{Win32,Unix}) llvm-svn: 19426
Diffstat (limited to 'llvm/lib/System/Win32/Memory.inc')
-rw-r--r--llvm/lib/System/Win32/Memory.inc53
1 files changed, 53 insertions, 0 deletions
diff --git a/llvm/lib/System/Win32/Memory.inc b/llvm/lib/System/Win32/Memory.inc
new file mode 100644
index 00000000000..f7b05abe037
--- /dev/null
+++ b/llvm/lib/System/Win32/Memory.inc
@@ -0,0 +1,53 @@
+//===- Win32/Memory.cpp - Win32 Memory Implementation -----------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Jeff Cohen and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides the Win32 specific implementation of various Memory
+// management utilities
+//
+//===----------------------------------------------------------------------===//
+
+#include "Win32.h"
+#include "llvm/System/Process.h"
+
+namespace llvm {
+using namespace sys;
+
+//===----------------------------------------------------------------------===//
+//=== WARNING: Implementation here must contain only Win32 specific code
+//=== and must not be UNIX code
+//===----------------------------------------------------------------------===//
+
+MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
+ if (NumBytes == 0) return MemoryBlock();
+
+ static const long pageSize = Process::GetPageSize();
+ unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
+
+ void *pa = VirtualAlloc(NULL, NumPages*pageSize, MEM_COMMIT,
+ PAGE_EXECUTE_READWRITE);
+ if (pa == NULL) {
+ ThrowError("Can't allocate RWX Memory: ");
+ }
+
+ 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 (!VirtualFree(M.Address, 0, MEM_RELEASE)) {
+ ThrowError("Can't release RWX Memory: ");
+ }
+}
+
+}
+
+// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
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