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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2014 Ruslan Baratov
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmFileLockPool.h"
#include <assert.h>
#include "cmFileLock.h"
#include "cmFileLockResult.h"
#include "cmAlgorithms.h"
cmFileLockPool::cmFileLockPool()
{
}
cmFileLockPool::~cmFileLockPool()
{
cmDeleteAll(this->FunctionScopes);
cmDeleteAll(this->FileScopes);
}
void cmFileLockPool::PushFunctionScope()
{
this->FunctionScopes.push_back(new ScopePool());
}
void cmFileLockPool::PopFunctionScope()
{
assert(!this->FunctionScopes.empty());
delete this->FunctionScopes.back();
this->FunctionScopes.pop_back();
}
void cmFileLockPool::PushFileScope()
{
this->FileScopes.push_back(new ScopePool());
}
void cmFileLockPool::PopFileScope()
{
assert(!this->FileScopes.empty());
delete this->FileScopes.back();
this->FileScopes.pop_back();
}
cmFileLockResult cmFileLockPool::LockFunctionScope(
const std::string& filename, unsigned long timeoutSec)
{
if (this->IsAlreadyLocked(filename))
{
return cmFileLockResult::MakeAlreadyLocked();
}
if (this->FunctionScopes.empty())
{
return cmFileLockResult::MakeNoFunction();
}
return this->FunctionScopes.back()->Lock(filename, timeoutSec);
}
cmFileLockResult cmFileLockPool::LockFileScope(
const std::string& filename, unsigned long timeoutSec)
{
if (this->IsAlreadyLocked(filename))
{
return cmFileLockResult::MakeAlreadyLocked();
}
assert(!this->FileScopes.empty());
return this->FileScopes.back()->Lock(filename, timeoutSec);
}
cmFileLockResult cmFileLockPool::LockProcessScope(
const std::string& filename, unsigned long timeoutSec)
{
if (this->IsAlreadyLocked(filename))
{
return cmFileLockResult::MakeAlreadyLocked();
}
return this->ProcessScope.Lock(filename, timeoutSec);
}
cmFileLockResult cmFileLockPool::Release(const std::string& filename)
{
for (It i = this->FunctionScopes.begin();
i != this->FunctionScopes.end(); ++i)
{
const cmFileLockResult result = (*i)->Release(filename);
if (!result.IsOk())
{
return result;
}
}
for (It i = this->FileScopes.begin(); i != this->FileScopes.end(); ++i)
{
const cmFileLockResult result = (*i)->Release(filename);
if (!result.IsOk())
{
return result;
}
}
return this->ProcessScope.Release(filename);
}
bool cmFileLockPool::IsAlreadyLocked(const std::string& filename) const
{
for (CIt i = this->FunctionScopes.begin();
i != this->FunctionScopes.end(); ++i)
{
const bool result = (*i)->IsAlreadyLocked(filename);
if (result)
{
return true;
}
}
for (CIt i = this->FileScopes.begin(); i != this->FileScopes.end(); ++i)
{
const bool result = (*i)->IsAlreadyLocked(filename);
if (result)
{
return true;
}
}
return this->ProcessScope.IsAlreadyLocked(filename);
}
cmFileLockPool::ScopePool::ScopePool()
{
}
cmFileLockPool::ScopePool::~ScopePool()
{
cmDeleteAll(this->Locks);
}
cmFileLockResult cmFileLockPool::ScopePool::Lock(
const std::string& filename, unsigned long timeoutSec)
{
cmFileLock *lock = new cmFileLock();
const cmFileLockResult result = lock->Lock(filename, timeoutSec);
if (result.IsOk())
{
this->Locks.push_back(lock);
return cmFileLockResult::MakeOk();
}
else
{
delete lock;
return result;
}
}
cmFileLockResult cmFileLockPool::ScopePool::Release(
const std::string& filename)
{
for (It i = this->Locks.begin(); i != this->Locks.end(); ++i)
{
if ((*i)->IsLocked(filename))
{
return (*i)->Release();
}
}
return cmFileLockResult::MakeOk();
}
bool cmFileLockPool::ScopePool::IsAlreadyLocked(
const std::string& filename) const
{
for (CIt i = this->Locks.begin(); i != this->Locks.end(); ++i)
{
if ((*i)->IsLocked(filename))
{
return true;
}
}
return false;
}
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