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- <?php
- declare(strict_types=1);
- namespace OC\Lock;
- use OCP\Lock\ILockingProvider;
- abstract class AbstractLockingProvider implements ILockingProvider {
- protected array $acquiredLocks = [
- 'shared' => [],
- 'exclusive' => []
- ];
-
- public function __construct(protected int $ttl) {
- }
-
- protected function hasAcquiredLock(string $path, int $type): bool {
- if ($type === self::LOCK_SHARED) {
- return isset($this->acquiredLocks['shared'][$path]) && $this->acquiredLocks['shared'][$path] > 0;
- } else {
- return isset($this->acquiredLocks['exclusive'][$path]) && $this->acquiredLocks['exclusive'][$path] === true;
- }
- }
-
- protected function markAcquire(string $path, int $targetType): void {
- if ($targetType === self::LOCK_SHARED) {
- if (!isset($this->acquiredLocks['shared'][$path])) {
- $this->acquiredLocks['shared'][$path] = 0;
- }
- $this->acquiredLocks['shared'][$path]++;
- } else {
- $this->acquiredLocks['exclusive'][$path] = true;
- }
- }
-
- protected function markRelease(string $path, int $type): void {
- if ($type === self::LOCK_SHARED) {
- if (isset($this->acquiredLocks['shared'][$path]) and $this->acquiredLocks['shared'][$path] > 0) {
- $this->acquiredLocks['shared'][$path]--;
- if ($this->acquiredLocks['shared'][$path] === 0) {
- unset($this->acquiredLocks['shared'][$path]);
- }
- }
- } elseif ($type === self::LOCK_EXCLUSIVE) {
- unset($this->acquiredLocks['exclusive'][$path]);
- }
- }
-
- protected function markChange(string $path, int $targetType): void {
- if ($targetType === self::LOCK_SHARED) {
- unset($this->acquiredLocks['exclusive'][$path]);
- if (!isset($this->acquiredLocks['shared'][$path])) {
- $this->acquiredLocks['shared'][$path] = 0;
- }
- $this->acquiredLocks['shared'][$path]++;
- } elseif ($targetType === self::LOCK_EXCLUSIVE) {
- $this->acquiredLocks['exclusive'][$path] = true;
- $this->acquiredLocks['shared'][$path]--;
- }
- }
-
- public function releaseAll(): void {
- foreach ($this->acquiredLocks['shared'] as $path => $count) {
- for ($i = 0; $i < $count; $i++) {
- $this->releaseLock($path, self::LOCK_SHARED);
- }
- }
- foreach ($this->acquiredLocks['exclusive'] as $path => $hasLock) {
- $this->releaseLock($path, self::LOCK_EXCLUSIVE);
- }
- }
- protected function getOwnSharedLockCount(string $path): int {
- return $this->acquiredLocks['shared'][$path] ?? 0;
- }
- }
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