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[Linux] Implement virtual memory allocation

This commit is contained in:
uytvbn 2017-10-24 23:12:33 +02:00 committed by Triang3l
parent 5fa59fc4a9
commit 962b90f699
1 changed files with 8 additions and 2 deletions
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10
src/xenia/base/memory_posix.cc
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@ -40,7 +40,13 @@ void* AllocFixed(void* base_address, size_t length,
AllocationType allocation_type, PageAccess access) { AllocationType allocation_type, PageAccess access) {
// mmap does not support reserve / commit, so ignore allocation_type. // mmap does not support reserve / commit, so ignore allocation_type.
uint32_t prot = ToPosixProtectFlags(access); uint32_t prot = ToPosixProtectFlags(access);
return mmap(base_address, length, prot, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); void* result = mmap(base_address, length, prot,
MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
if (result == MAP_FAILED) {
return nullptr;
} else {
return result;
}
} }
bool DeallocFixed(void* base_address, size_t length, bool DeallocFixed(void* base_address, size_t length,
@ -91,7 +97,7 @@ FileMappingHandle CreateFileMappingHandle(const std::filesystem::path& path,
} }
void CloseFileMappingHandle(FileMappingHandle handle) { void CloseFileMappingHandle(FileMappingHandle handle) {
close((intptr_t)handle); close(static_cast<int>(reinterpret_cast<int64_t>(handle)));
} }
void* MapFileView(FileMappingHandle handle, void* base_address, size_t length, void* MapFileView(FileMappingHandle handle, void* base_address, size_t length,