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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. */
#include "cmFileLockPool.h"
#include <assert.h>
#include "cmAlgorithms.h"
#include "cmFileLock.h"
#include "cmFileLockResult.h"
cmFileLockPool::cmFileLockPool() = default;
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 (auto& funcScope : this->FunctionScopes) {
const cmFileLockResult result = funcScope->Release(filename);
if (!result.IsOk()) {
return result;
}
}
for (auto& fileScope : this->FileScopes) {
const cmFileLockResult result = fileScope->Release(filename);
if (!result.IsOk()) {
return result;
}
}
return this->ProcessScope.Release(filename);
}
bool cmFileLockPool::IsAlreadyLocked(const std::string& filename) const
{
for (auto const& funcScope : this->FunctionScopes) {
const bool result = funcScope->IsAlreadyLocked(filename);
if (result) {
return true;
}
}
for (auto const& fileScope : this->FileScopes) {
const bool result = fileScope->IsAlreadyLocked(filename);
if (result) {
return true;
}
}
return this->ProcessScope.IsAlreadyLocked(filename);
}
cmFileLockPool::ScopePool::ScopePool() = default;
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();
}
delete lock;
return result;
}
cmFileLockResult cmFileLockPool::ScopePool::Release(
const std::string& filename)
{
for (auto& lock : this->Locks) {
if (lock->IsLocked(filename)) {
return lock->Release();
}
}
return cmFileLockResult::MakeOk();
}
bool cmFileLockPool::ScopePool::IsAlreadyLocked(
const std::string& filename) const
{
for (auto const& lock : this->Locks) {
if (lock->IsLocked(filename)) {
return true;
}
}
return false;
}
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