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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmFileLockPool_h
#define cmFileLockPool_h
#include "cmConfigure.h" // IWYU pragma: keep
#include <string>
#include <vector>
class cmFileLock;
class cmFileLockResult;
class cmFileLockPool
{
public:
cmFileLockPool();
~cmFileLockPool();
cmFileLockPool(cmFileLockPool const&) = delete;
cmFileLockPool& operator=(cmFileLockPool const&) = delete;
//@{
/**
* @brief Function scope control.
*/
void PushFunctionScope();
void PopFunctionScope();
//@}
//@{
/**
* @brief File scope control.
*/
void PushFileScope();
void PopFileScope();
//@}
//@{
/**
* @brief Lock the file in given scope.
* @param timeoutSec Lock timeout. If -1 try until success or fatal error.
*/
cmFileLockResult LockFunctionScope(const std::string& filename,
unsigned long timeoutSec);
cmFileLockResult LockFileScope(const std::string& filename,
unsigned long timeoutSec);
cmFileLockResult LockProcessScope(const std::string& filename,
unsigned long timeoutSec);
//@}
/**
* @brief Unlock the file explicitly.
*/
cmFileLockResult Release(const std::string& filename);
private:
bool IsAlreadyLocked(const std::string& filename) const;
class ScopePool
{
public:
ScopePool();
~ScopePool();
ScopePool(ScopePool const&) = delete;
ScopePool& operator=(ScopePool const&) = delete;
cmFileLockResult Lock(const std::string& filename,
unsigned long timeoutSec);
cmFileLockResult Release(const std::string& filename);
bool IsAlreadyLocked(const std::string& filename) const;
private:
using List = std::vector<cmFileLock*>;
using It = List::iterator;
using CIt = List::const_iterator;
List Locks;
};
using List = std::vector<ScopePool*>;
using It = List::iterator;
using CIt = List::const_iterator;
List FunctionScopes;
List FileScopes;
ScopePool ProcessScope;
};
#endif // cmFileLockPool_h
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