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86578eccf2
Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#ifndef cmFileLockPool_h
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#define cmFileLockPool_h
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#include <cmConfigure.h> // IWYU pragma: keep
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#include <list>
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#include <string>
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class cmFileLock;
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class cmFileLockResult;
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class cmFileLockPool
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{
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public:
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cmFileLockPool();
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~cmFileLockPool();
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//@{
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/**
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* @brief Function scope control.
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*/
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void PushFunctionScope();
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void PopFunctionScope();
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//@}
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//@{
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/**
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* @brief File scope control.
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*/
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void PushFileScope();
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void PopFileScope();
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//@}
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//@{
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/**
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* @brief Lock the file in given scope.
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* @param timeoutSec Lock timeout. If -1 try until success or fatal error.
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*/
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cmFileLockResult LockFunctionScope(const std::string& filename,
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unsigned long timeoutSec);
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cmFileLockResult LockFileScope(const std::string& filename,
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unsigned long timeoutSec);
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cmFileLockResult LockProcessScope(const std::string& filename,
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unsigned long timeoutSec);
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//@}
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/**
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* @brief Unlock the file explicitly.
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*/
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cmFileLockResult Release(const std::string& filename);
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private:
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cmFileLockPool(const cmFileLockPool&);
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cmFileLockPool& operator=(const cmFileLockPool&);
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bool IsAlreadyLocked(const std::string& filename) const;
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class ScopePool
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{
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public:
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ScopePool();
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~ScopePool();
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cmFileLockResult Lock(const std::string& filename,
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unsigned long timeoutSec);
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cmFileLockResult Release(const std::string& filename);
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bool IsAlreadyLocked(const std::string& filename) const;
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private:
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ScopePool(const ScopePool&);
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ScopePool& operator=(const ScopePool&);
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typedef std::list<cmFileLock*> List;
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typedef List::iterator It;
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typedef List::const_iterator CIt;
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List Locks;
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};
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typedef std::list<ScopePool*> List;
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typedef List::iterator It;
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typedef List::const_iterator CIt;
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List FunctionScopes;
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List FileScopes;
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ScopePool ProcessScope;
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};
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#endif // cmFileLockPool_h
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