1 files changed, 84 insertions, 0 deletions
diff --git a/vendor/open-telemetry/context/FiberBoundContextStorage.php b/vendor/open-telemetry/context/FiberBoundContextStorage.php
new file mode 100644
index 000000000..667f73b3d
--- /dev/null
+++ b/vendor/open-telemetry/context/FiberBoundContextStorage.php
@@ -0,0 +1,84 @@
+<?php
+
+/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection */
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\Context;
+
+use function assert;
+use function class_exists;
+use const E_USER_WARNING;
+use Fiber;
+use function trigger_error;
+
+/**
+ * @internal
+ *
+ * @phan-file-suppress PhanUndeclaredClassReference
+ * @phan-file-suppress PhanUndeclaredClassMethod
+ */
+final class FiberBoundContextStorage implements ContextStorageInterface, ExecutionContextAwareInterface
+{
+    /** @var ContextStorageInterface&ExecutionContextAwareInterface */
+    private ContextStorageInterface $storage;
+
+    /**
+     * @param ContextStorageInterface&ExecutionContextAwareInterface $storage
+     */
+    public function __construct(ContextStorageInterface $storage)
+    {
+        $this->storage = $storage;
+    }
+
+    public function fork($id): void
+    {
+        $this->storage->fork($id);
+    }
+
+    public function switch($id): void
+    {
+        $this->storage->switch($id);
+    }
+
+    public function destroy($id): void
+    {
+        $this->storage->destroy($id);
+    }
+
+    public function scope(): ?ContextStorageScopeInterface
+    {
+        $this->checkFiberMismatch();
+
+        if (($scope = $this->storage->scope()) === null) {
+            return null;
+        }
+
+        return new FiberBoundContextStorageScope($scope);
+    }
+
+    public function current(): ContextInterface
+    {
+        $this->checkFiberMismatch();
+
+        return $this->storage->current();
+    }
+
+    public function attach(ContextInterface $context): ContextStorageScopeInterface
+    {
+        $scope = $this->storage->attach($context);
+        assert(class_exists(Fiber::class, false));
+        $scope[Fiber::class] = Fiber::getCurrent();
+
+        return new FiberBoundContextStorageScope($scope);
+    }
+
+    private function checkFiberMismatch(): void
+    {
+        $scope = $this->storage->scope();
+        assert(class_exists(Fiber::class, false));
+        if ($scope && $scope[Fiber::class] !== Fiber::getCurrent()) {
+            trigger_error('Fiber context switching not supported', E_USER_WARNING);
+        }
+    }
+}