AuroraSupport/AuroraRuntime
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[*] NT ReadFile: replace GENERIC_READ, FILE_SHARE_READ with GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE

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[*] ByteBuffer::IsValid() will now return true if there is no underlying buffer so long as the object is marked with the dynamic scaling flag (no contents isnt an invalid state; alloc failure on construct and ad-hoc failure is. latterly, specify the write flag on failure in the ByteBuffer::Write method.) the alloc error can be safely unwound by state raii helpers bc realloc and frens will not free or dirty the state. write-fail-aware may roll back the write head, like how readers can roll back the read head if the stream is incomplete.
This commit is contained in:
Reece Wilson 2022-09-23 00:59:08 +01:00
parent 6ac4fd61ab
commit 1de0bdb4e7
3 changed files with 5 additions and 3 deletions
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1
Include/Aurora/Memory/ByteBuffer_ReadWrite.inl
View File

@ -96,6 +96,7 @@ namespace Aurora::Memory
{
if (!Resize(offset + requestLength))
{
this->flagWriteError = true;
return 0;
}

2
Include/Aurora/Memory/ByteBuffer_Utils.inl
View File

@ -117,7 +117,7 @@ namespace Aurora::Memory
bool ByteBuffer::IsValid() const
{
return !IsEmpty() && !HasStreamError();
return (!IsEmpty() || this->flagExpandable) && !HasStreamError();
}
bool ByteBuffer::IsEmpty() const

5
Source/IO/FS/FS.NT.cpp
View File

@ -247,7 +247,7 @@ namespace Aurora::IO::FS
return false;
}
auto fileHandle = CreateFileW(win32Path.c_str(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
auto fileHandle = CreateFileW(win32Path.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (fileHandle == INVALID_HANDLE_VALUE)
{
SysPushErrorIO("Couldn't open handle: {}", path);
@ -263,7 +263,8 @@ namespace Aurora::IO::FS
writeView = buffer.GetOrAllocateLinearWriteable(length.QuadPart);
if (!writeView)
{
return {};
SysPushErrorMem();
goto out;
}
while (length.QuadPart)