OnDiskCommon.h File Reference

#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include <chrono>
#include <optional>

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Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.
namespace	llvm::cas
namespace	llvm::cas::ondisk

Functions
Expected< std::optional< uint64_t > >	llvm::cas::ondisk::getOverriddenMaxMappingSize ()
	Retrieves an overridden maximum mapping size for CAS files, if any, speicified by LLVM_CAS_MAX_MAPPING_SIZE in the environment or set by setMaxMappingSize().
void	llvm::cas::ondisk::setMaxMappingSize (uint64_t Size)
	Set MaxMappingSize for ondisk CAS.
bool	llvm::cas::ondisk::useSmallMappingSize (const Twine &Path)
	Whether to use a small file mapping for ondisk databases created in Path.
std::error_code	llvm::cas::ondisk::lockFileThreadSafe (int FD, llvm::sys::fs::LockKind Kind)
	Thread-safe alternative to sys::fs::lockFile.
std::error_code	llvm::cas::ondisk::unlockFileThreadSafe (int FD)
	Thread-safe alternative to sys::fs::unlockFile.
std::error_code	llvm::cas::ondisk::tryLockFileThreadSafe (int FD, std::chrono::milliseconds Timeout=std::chrono::milliseconds(0), llvm::sys::fs::LockKind Kind=llvm::sys::fs::LockKind::Exclusive)
	Thread-safe alternative to sys::fs::tryLockFile.
Expected< size_t >	llvm::cas::ondisk::preallocateFileTail (int FD, size_t CurrentSize, size_t NewSize)
	Allocate space for the file FD on disk, if the filesystem supports it.

Variables
constexpr StringLiteral	llvm::cas::ondisk::CASFormatVersion = "v1"
	The version for all the ondisk database files.