From 1b4d8c0fb616f33dc5386e180b4201fc996014cd Mon Sep 17 00:00:00 2001
From: Stig Bakken <ssb@php.net>
Date: Tue, 29 Aug 2000 09:18:48 +0000
Subject: [PATCH] @Added PHP API for Zend's ticks Added PHP API for registering
 tick functions.  Ticks is a per-instruction callback in Zend that allows us
 to implement cooperative multitasking within PHP.  Example:

In extension code:

php_add_tick_function(my_tick_func);

void my_tick_func(int count) {
    php_printf("[tick %d]", count);
}

In PHP code:
<?php

declare(ticks = 1) {
    print "there should be two ticks here.\n";
}

?>
---
 main/main.c      |  1 -
 main/php_ticks.c | 20 +++++++++++---------
 main/php_ticks.h |  9 ++-------
 3 files changed, 13 insertions(+), 17 deletions(-)

diff --git a/main/main.c b/main/main.c
index 4d0e8e7257..d62eb8db6a 100644
--- a/main/main.c
+++ b/main/main.c
@@ -757,7 +757,6 @@ int php_global_shutdown_extensions(zend_module_entry **ptr, int count)
 	return SUCCESS;
 }
 
-
 int php_module_startup(sapi_module_struct *sf)
 {
 	zend_utility_functions zuf;
diff --git a/main/php_ticks.c b/main/php_ticks.c
index c93200c9ad..e56f0af915 100644
--- a/main/php_ticks.c
+++ b/main/php_ticks.c
@@ -23,7 +23,7 @@
 
 int php_startup_ticks(PLS_D)
 {
-	zend_llist_init(&PG(tick_functions), sizeof(PG(tick_functions)), NULL, 1);
+	zend_llist_init(&PG(tick_functions), sizeof(void(*)(int)), NULL, 1);
 	return SUCCESS;
 }
 
@@ -34,31 +34,33 @@ void php_shutdown_ticks(PLS_D)
 
 static int php_compare_tick_functions(void *elem1, void *elem2)
 {
-	return ((void (*)(int))elem1 == (void (*)(int))elem2);
+	void(*func1)(int);
+	void(*func2)(int);
+	memcpy(&func1, elem1, sizeof(void(*)(int)));
+	memcpy(&func2, elem2, sizeof(void(*)(int)));
+	return (func1 == func2);
 }
 
-PHPAPI int php_add_tick_function(void (*func)(int))
+PHPAPI void php_add_tick_function(void (*func)(int))
 {
 	PLS_FETCH();
 
-	zend_llist_add_element(&PG(tick_functions), func);
-
-	return SUCCESS;
+	zend_llist_add_element(&PG(tick_functions), (void *)&func);
 }
 
-PHPAPI int php_remove_tick_function(void (*func)(int))
+PHPAPI void php_remove_tick_function(void (*func)(int))
 {
 	PLS_FETCH();
 
 	zend_llist_del_element(&PG(tick_functions), func,
 						   (int(*)(void*,void*))php_compare_tick_functions);
-	return SUCCESS;
 }
 
 static void php_tick_iterator(void *data, void *arg)
 {
 	void (*func)(int);
-	func = (void(*)(int))data;
+
+	memcpy(&func, data, sizeof(void(*)(int)));
 	func(*((int *)arg));
 }
 
diff --git a/main/php_ticks.h b/main/php_ticks.h
index 078ca3aae2..1ca4617424 100644
--- a/main/php_ticks.h
+++ b/main/php_ticks.h
@@ -21,16 +21,11 @@
 #ifndef PHP_TICKS_H
 #define PHP_TICKS_H
 
-struct _php_tick_function_entry {
-	void (*func)(int count);
-	struct _php_tick_function_entry *next;
-};
-
 int php_startup_ticks(PLS_D);
 void php_shutdown_ticks(PLS_D);
 void php_run_ticks(int count);
-PHPAPI int php_add_tick_function(void (*func)(int count));
-PHPAPI int php_remove_tick_function(void (*func)(int count));
+PHPAPI void php_add_tick_function(void (*func)(int));
+PHPAPI void php_remove_tick_function(void (*func)(int));
 
 #endif
 
-- 
2.40.0