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Simplify the sys::Memory interface per Chris' request.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16318 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2004-09-13 22:38:11 +00:00
parent 2565943289
commit 33189e787b
11 changed files with 114 additions and 94 deletions
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17
lib/System/Linux/Memory.cpp
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@@ -30,8 +30,8 @@ using namespace sys;
/// to emit code to the memory then jump to it. Getting this type of memory
/// is very OS specific.
///
void* Memory::AllocateRWX(Memory& M, unsigned NumBytes) {
if (NumBytes == 0) return 0;
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
static const long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
@@ -43,14 +43,15 @@ void* Memory::AllocateRWX(Memory& M, unsigned NumBytes) {
strerror_r(errno, msg, MAXPATHLEN-1);
throw std::string("Can't allocate RWX Memory: ") + msg;
}
M.Address = pa;
M.AllocSize = NumPages*pageSize;
return pa;
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(Memory& M) {
if (M.Address == 0 || M.AllocSize == 0) return;
if (0 != munmap(M.Address, M.AllocSize)) {
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;