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AK: Make MappedFile heap-allocated and ref-counted

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Let's adapt this class a bit better to how it's actually being used.

Instead of having valid/invalid states and storing an error in case
it's invalid, a MappedFile is now always valid, and the factory
function that creates it will return an OSError if mapping fails.
This commit is contained in:
Andreas Kling 2021-01-10 15:55:54 +01:00
parent 70fce5c4c7
commit 2f3b901f7f
36 changed files with 184 additions and 199 deletions
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10
Libraries/LibPCIDB/Database.cpp
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@ -34,7 +34,10 @@ namespace PCIDB {
RefPtr<Database> Database::open(const StringView& file_name)
{
auto res = adopt(*new Database(file_name));
auto file_or_error = MappedFile::map(file_name);
if (file_or_error.is_error())
return nullptr;
auto res = adopt(*new Database(file_or_error.release_value()));
if (res->init() != 0)
return nullptr;
return res;
@ -131,10 +134,7 @@ int Database::init()
if (m_ready)
return 0;
if (!m_file.is_valid())
return -1;
m_view = StringView((const char*)m_file.data(), m_file.size());
m_view = StringView { m_file->bytes() };
ParseMode mode = ParseMode::UnknownMode;