poll: introduce BackendUnavailableException

Author: bukka

ext/standard/io_poll.c

@@ -29,6 +29,7 @@ static zend_class_entry *php_io_poll_watcher_class_entry;
 static zend_class_entry *php_io_poll_handle_class_entry;
 static zend_class_entry *php_io_exception_class_entry;
 static zend_class_entry *php_io_poll_exception_class_entry;
+static zend_class_entry *php_io_poll_failed_backend_unavailable_class_entry;
 static zend_class_entry *php_io_poll_failed_operation_class_entry;
 static zend_class_entry *php_io_poll_failed_context_init_class_entry;
 static zend_class_entry *php_io_poll_failed_handle_add_class_entry;
@@ -662,7 +663,9 @@ PHP_METHOD(Io_Poll_Context, __construct)
 	intern->ctx = php_poll_create(backend_type, 0);
 
 	if (!intern->ctx) {
-		zend_argument_value_error(1, "must be available backend");
+		zend_throw_exception_ex(
+				php_io_poll_failed_backend_unavailable_class_entry, 0, "Backend %s not available",
+				php_io_poll_backend_type_to_name(backend_type));
 		RETURN_THROWS();
 	}
 
@@ -893,6 +896,9 @@ PHP_MINIT_FUNCTION(poll)
 	php_io_poll_failed_wait_class_entry = register_class_Io_Poll_FailedPollWaitException(
 			php_io_poll_failed_operation_class_entry);
 
+	php_io_poll_failed_backend_unavailable_class_entry = register_class_Io_Poll_BackendUnavailableException(
+		php_io_poll_exception_class_entry);
+
 	php_io_poll_inactive_watcher_class_entry = register_class_Io_Poll_InactiveWatcherException(
 			php_io_poll_exception_class_entry);
 

ext/standard/io_poll.stub.php

@@ -128,6 +128,8 @@ class FailedWatcherModificationException extends FailedPollOperationException {}
 
     class FailedPollWaitException extends FailedPollOperationException {}
 
+    class BackendUnavailableException extends PollException {}
+
     class InactiveWatcherException extends PollException {}
 
     class HandleAlreadyWatchedException extends PollException {}

ext/standard/io_poll_arginfo.h

@@ -1,5 +1,5 @@
 --TEST--
-Poll stream - backend name
+Poll context - backend on Unix
 --SKIPIF--
 <?php
 if (substr(PHP_OS, 0, 3) == 'WIN') {
@@ -16,7 +16,13 @@ var_dump($poll_ctx->getBackend());
 $poll_ctx = new Io\Poll\Context(Io\Poll\Backend::Poll);
 $backend = $poll_ctx->getBackend();
 var_dump($backend->name);
+try {
+    new Io\Poll\Context(Io\Poll\Backend::WSAPoll);
+} catch (\Io\Poll\BackendUnavailableException $e) {
+    var_dump($e->getMessage());
+}
 ?>
 --EXPECTF--
 enum(Io\Poll\Backend::%s)
 string(4) "Poll"
+string(29) "Backend WSAPoll not available"

…/poll/poll_stream_backend_name_unix.phpt …rd/tests/poll/poll_ctx_backend_unix.phptext/standard/tests/poll/poll_stream_backend_name_unix.phpt renamed to ext/standard/tests/poll/poll_ctx_backend_unix.phpt ext/standard/tests/poll/poll_stream_backend_name_unix.phpt renamed to ext/standard/tests/poll/poll_ctx_backend_unix.phpt

@@ -1,5 +1,5 @@
 --TEST--
-Poll stream - backend name on Windows
+Poll context - backend on Windows
 --SKIPIF--
 <?php
 if (substr(PHP_OS, 0, 3) != 'WIN') {
@@ -16,7 +16,13 @@ var_dump($poll_ctx->getBackend());
 $poll_ctx = new Io\Poll\Context(Io\Poll\Backend::WSAPoll);
 $backend = $poll_ctx->getBackend();
 var_dump($backend->name);
+try {
+    new Io\Poll\Context(Io\Poll\Backend::Epoll);
+} catch (\Io\Poll\BackendUnavailableException $e) {
+    var_dump($e->getMessage());
+}
 ?>
 --EXPECTF--
 enum(Io\Poll\Backend::%s)
 string(7) "WSAPoll"
+string(27) "Backend Epoll not available"