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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 <algorithm>
#include <cassert>
#include <utility>
#include "cmFileLock.h"
#include "cmFileLockResult.h"
cmFileLockPool::cmFileLockPool() = default;
cmFileLockPool::~cmFileLockPool() = default;
void cmFileLockPool::PushFunctionScope()
{
this->FunctionScopes.emplace_back();
}
void cmFileLockPool::PopFunctionScope()
{
assert(!this->FunctionScopes.empty());
this->FunctionScopes.pop_back();
}
void cmFileLockPool::PushFileScope()
{
this->FileScopes.emplace_back();
}
void cmFileLockPool::PopFileScope()
{
assert(!this->FileScopes.empty());
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() = default;
cmFileLockPool::ScopePool::ScopePool(ScopePool&&) noexcept = default;
cmFileLockPool::ScopePool& cmFileLockPool::ScopePool::operator=(
ScopePool&& other) noexcept
{
if (this != &other) {
this->Locks = std::move(other.Locks);
}
return *this;
}
cmFileLockResult cmFileLockPool::ScopePool::Lock(const std::string& filename,
unsigned long timeoutSec)
{
cmFileLock lock;
const cmFileLockResult result = lock.Lock(filename, timeoutSec);
if (result.IsOk()) {
this->Locks.push_back(std::move(lock));
return cmFileLockResult::MakeOk();
}
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
{
return std::any_of(this->Locks.begin(), this->Locks.end(),
[&filename](cmFileLock const& lock) -> bool {
return lock.IsLocked(filename);
});
}
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