--- /dev/null
+/*
+ +--------------------------------------------------------------------+
+ | PECL :: raphf |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted provided that the conditions mentioned |
+ | in the accompanying LICENSE file are met. |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2013, Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
+
+#ifndef PHP_RAPHF_API_H
+#define PHP_RAPHF_API_H
+
+/**
+ * A resource constructor.
+ *
+ * @param opaque is the \a data from php_persistent_handle_provide()
+ * @param init_arg is the \a init_arg from php_resource_factory_init()
+ * @return the created (persistent) handle
+ */
+typedef void *(*php_resource_factory_handle_ctor_t)(void *opaque,
+ void *init_arg TSRMLS_DC);
+
+/**
+ * The copy constructor of a resource.
+ *
+ * @param opaque the factory's data
+ * @param handle the (persistent) handle to copy
+ */
+typedef void *(*php_resource_factory_handle_copy_t)(void *opaque,
+ void *handle TSRMLS_DC);
+
+/**
+ * The destructor of a resource.
+ *
+ * @param opaque the factory's data
+ * @param handle the handle to destroy
+ */
+typedef void (*php_resource_factory_handle_dtor_t)(void *opaque,
+ void *handle TSRMLS_DC);
+
+/**
+ * The resource ops consisting of a ctor, a copy ctor and a dtor.
+ *
+ * Define this ops and register them with php_persistent_handle_provide()
+ * in MINIT.
+ */
+typedef struct php_resource_factory_ops {
+ /** The resource constructor */
+ php_resource_factory_handle_ctor_t ctor;
+ /** The resource's copy constructor */
+ php_resource_factory_handle_copy_t copy;
+ /** The resource's destructor */
+ php_resource_factory_handle_dtor_t dtor;
+} php_resource_factory_ops_t;
+
+/**
+ * The resource factory.
+ */
+typedef struct php_resource_factory {
+ /** The resource ops */
+ php_resource_factory_ops_t fops;
+ /** Opaque user data */
+ void *data;
+ /** User data destructor */
+ void (*dtor)(void *data);
+ /** How often this factory is referenced */
+ unsigned refcount;
+} php_resource_factory_t;
+
+/**
+ * Initialize a resource factory.
+ *
+ * If you register a \a dtor for a resource factory used with a persistent
+ * handle provider, be sure to call php_persistent_handle_cleanup() for your
+ * registered provider in MSHUTDOWN, else the dtor will point to no longer
+ * available memory if the extension has already been unloaded.
+ *
+ * @param f the factory to initialize; if NULL allocated on the heap
+ * @param fops the resource ops to assign to the factory
+ * @param data opaque user data; may be NULL
+ * @param dtor a destructor for the data; may be NULL
+ * @return \a f or an allocated resource factory
+ */
+PHP_RAPHF_API php_resource_factory_t *php_resource_factory_init(
+ php_resource_factory_t *f, php_resource_factory_ops_t *fops, void *data,
+ void (*dtor)(void *data));
+
+/**
+ * Increase the refcount of the resource factory.
+ *
+ * @param rf the resource factory
+ * @return the new refcount
+ */
+PHP_RAPHF_API unsigned php_resource_factory_addref(php_resource_factory_t *rf);
+
+/**
+ * Destroy the resource factory.
+ *
+ * If the factory's refcount reaches 0, the \a dtor for \a data is called.
+ *
+ * @param f the resource factory
+ */
+PHP_RAPHF_API void php_resource_factory_dtor(php_resource_factory_t *f);
+
+/**
+ * Destroy and free the resource factory.
+ *
+ * Calls php_resource_factory_dtor() and frees \æ f if the factory's refcount
+ * reached 0.
+ *
+ * @param f the resource factory
+ */
+PHP_RAPHF_API void php_resource_factory_free(php_resource_factory_t **f);
+
+/**
+ * Construct a resource by the resource factory \a f
+ *
+ * @param f the resource factory
+ * @param init_arg for the resource constructor
+ * @return the new resource
+ */
+PHP_RAPHF_API void *php_resource_factory_handle_ctor(php_resource_factory_t *f,
+ void *init_arg TSRMLS_DC);
+
+/**
+ * Create a copy of the resource \a handle
+ *
+ * @param f the resource factory
+ * @param handle the resource to copy
+ * @return the copy
+ */
+PHP_RAPHF_API void *php_resource_factory_handle_copy(php_resource_factory_t *f,
+ void *handle TSRMLS_DC);
+
+/**
+ * Destroy (and free) the resource
+ *
+ * @param f the resource factory
+ * @param handle the resource to destroy
+ */
+PHP_RAPHF_API void php_resource_factory_handle_dtor(php_resource_factory_t *f,
+ void *handle TSRMLS_DC);
+
+/**
+ * Persistent handles storage
+ */
+typedef struct php_persistent_handle_list {
+ /** Storage of free resources */
+ HashTable free;
+ /** Count of acquired resources */
+ ulong used;
+} php_persistent_handle_list_t;
+
+/**
+ * Definition of a persistent handle provider.
+ * Holds a resource factory an a persistent handle list.
+ */
+typedef struct php_persistent_handle_provider {
+ /**
+ * The list of free handles.
+ * Hash of "ident" => array(handles) entries. Persistent handles are
+ * acquired out of this list.
+ */
+ php_persistent_handle_list_t list;
+
+ /**
+ * The resource factory.
+ * New handles are created by this factory.
+ */
+ php_resource_factory_t rf;
+} php_persistent_handle_provider_t;
+
+typedef struct php_persistent_handle_factory php_persistent_handle_factory_t;
+
+/**
+ * Wakeup the persistent handle on re-acquisition.
+ */
+typedef void (*php_persistent_handle_wakeup_t)(
+ php_persistent_handle_factory_t *f, void **handle TSRMLS_DC);
+/**
+ * Retire the persistent handle on release.
+ */
+typedef void (*php_persistent_handle_retire_t)(
+ php_persistent_handle_factory_t *f, void **handle TSRMLS_DC);
+
+/**
+ * Definition of a persistent handle factory.
+ *
+ * php_persistent_handle_concede() will return a pointer to a
+ * php_persistent_handle_factory if a provider for the \a name_str has
+ * been registered with php_persistent_handle_provide().
+ */
+struct php_persistent_handle_factory {
+ /** The persistent handle provider */
+ php_persistent_handle_provider_t *provider;
+ /** The persistent handle wakeup routine; may be NULL */
+ php_persistent_handle_wakeup_t wakeup;
+ /** The persistent handle retire routine; may be NULL */
+ php_persistent_handle_retire_t retire;
+
+ /** The ident for which this factory manages resources */
+ struct {
+ /** ident string */
+ char *str;
+ /** ident length */
+ size_t len;
+ } ident;
+
+ /** Whether it has to be free'd on php_persistent_handle_abandon() */
+ unsigned free_on_abandon:1;
+};
+
+/**
+ * Register a persistent handle provider in MINIT.
+ *
+ * Registers a factory provider for \a name_str with \a fops resource factory
+ * ops. Call this in your MINIT.
+ *
+ * A php_resource_factory will be created with \a fops, \a data and \a dtor
+ * and will be stored together with a php_persistent_handle_list in the global
+ * raphf hash.
+ *
+ * A php_persistent_handle_factory can then be retrieved by
+ * php_persistent_handle_concede() at runtime.
+ *
+ * @param name_str the provider name, e.g. "http\Client\Curl"
+ * @param name_len the provider name length, e.g. strlen("http\Client\Curl")
+ * @param fops the resource factory ops
+ * @param data opaque user data
+ * @param dtor \a data destructor
+ * @return SUCCESS/FAILURE
+ */
+PHP_RAPHF_API int /* SUCCESS|FAILURE */ php_persistent_handle_provide(
+ const char *name_str, size_t name_len, php_resource_factory_ops_t *fops,
+ void *data, void (*dtor)(void *) TSRMLS_DC);
+
+/**
+ * Retrieve a persistent handle factory at runtime.
+ *
+ * If a persistent handle provider has been registered for \a name_str, a new
+ * php_persistent_handle_factory creating resources in the \a ident_str
+ * namespace will be constructed.
+ *
+ * The wakeup routine \a wakeup and the retire routine \a retire will be
+ * assigned to the new php_persistent_handle_factory.
+ *
+ * @param a pointer to a factory; allocated on the heap if NULL
+ * @param name_str the provider name, e.g. "http\Client\Curl"
+ * @param name_len the provider name length, e.g. strlen("http\Client\Curl")
+ * @param ident_str the subsidiary namespace, e.g. "php.net:80"
+ * @param ident_len the subsidiary namespace lenght, e.g. strlen("php.net:80")
+ * @param wakeup any persistent handle wakeup routine
+ * @param retire any persistent handle retire routine
+ * @return \a a or an allocated persistent handle factory
+ */
+PHP_RAPHF_API php_persistent_handle_factory_t *php_persistent_handle_concede(
+ php_persistent_handle_factory_t *a, const char *name_str,
+ size_t name_len, const char *ident_str, size_t ident_len,
+ php_persistent_handle_wakeup_t wakeup,
+ php_persistent_handle_retire_t retire TSRMLS_DC);
+
+/**
+ * Abandon the persistent handle factory.
+ *
+ * Destroy a php_persistent_handle_factory created by
+ * php_persistent_handle_concede(). If the memory for the factory was allocated,
+ * it will automatically be free'd.
+ *
+ * @param a the persistent handle factory to destroy
+ */
+PHP_RAPHF_API void php_persistent_handle_abandon(
+ php_persistent_handle_factory_t *a);
+
+/**
+ * Acquire a persistent handle.
+ *
+ * That is, either re-use a resource from the free list or create a new handle.
+ *
+ * If a handle is acquired from the free list, the
+ * php_persistent_handle_factory::wakeup callback will be executed for that
+ * handle.
+ *
+ * @param a the persistent handle factory
+ * @param init_arg the \a init_arg for php_resource_factory_handle_ctor()
+ * @return the acquired resource
+ */
+PHP_RAPHF_API void *php_persistent_handle_acquire(
+ php_persistent_handle_factory_t *a, void *init_arg TSRMLS_DC);
+
+/**
+ * Release a persistent handle.
+ *
+ * That is, either put it back into the free list for later re-use or clean it
+ * up with php_resource_factory_handle_dtor().
+ *
+ * If a handle is put back into the free list, the
+ * php_persistent_handle_factory::retire callback will be executed for that
+ * handle.
+ *
+ * @param a the persistent handle factory
+ * @param handle the handle to release
+ */
+PHP_RAPHF_API void php_persistent_handle_release(
+ php_persistent_handle_factory_t *a, void *handle TSRMLS_DC);
+
+/**
+ * Copy a persistent handle.
+ *
+ * Let the underlying resource factory copy the \a handle.
+ *
+ * @param a the persistent handle factory
+ * @param handle the resource to accrete
+ */
+PHP_RAPHF_API void *php_persistent_handle_accrete(
+ php_persistent_handle_factory_t *a, void *handle TSRMLS_DC);
+
+/**
+ * Retrieve persistent handle resource factory ops.
+ *
+ * These ops can be used to mask a persistent handle factory as
+ * resource factory itself, so you can transparently use the
+ * resource factory API, both for persistent and non-persistent
+ * ressources.
+ *
+ * Example:
+ * ~~~~~~~~~~~~~~~{.c}
+ * php_resource_factory_t *create_my_rf(const char *persistent_id_str,
+ * size_t persistent_id_len TSRMLS_DC)
+ * {
+ * php_resource_factory_t *rf;
+ *
+ * if (persistent_id_str) {
+ * php_persistent_handle_factory_t *pf;
+ * php_resource_factory_ops_t *ops;
+ *
+ * ops = php_persistent_handle_get_resource_factory_ops();
+ *
+ * pf = php_persistent_handle_concede(NULL, "my", 2,
+ * persistent_id_str, persistent_id_len, NULL, NULL TSRMLS_CC);
+ *
+ * rf = php_persistent_handle_resource_factory_init(NULL, pf);
+ * } else {
+ * rf = php_resource_factory_init(NULL, &myops, NULL, NULL);
+ * }
+ * return rf;
+ * }
+ * ~~~~~~~~~~~~~~~
+ */
+PHP_RAPHF_API php_resource_factory_ops_t *
+php_persistent_handle_get_resource_factory_ops(void);
+
+/**
+ * Create a resource factory for persistent handles.
+ *
+ * This will create a resource factory with persistent handle ops, which wraps
+ * the provided reource factory \a pf.
+ *
+ * @param a the persistent handle resource factory to initialize
+ * @param pf the resource factory to wrap
+ */
+PHP_RAPHF_API php_resource_factory_t *
+php_persistent_handle_resource_factory_init(php_resource_factory_t *a,
+ php_persistent_handle_factory_t *pf);
+
+/**
+ * Check whether a resource factory is a persistent handle resource factory.
+ *
+ * @param a the resource factory to check
+ */
+PHP_RAPHF_API zend_bool php_resource_factory_is_persistent(
+ php_resource_factory_t *a);
+
+/**
+ * Clean persistent handles up.
+ *
+ * Destroy persistent handles of provider \a name_str and in subsidiary
+ * namespace \a ident_str.
+ *
+ * If \a name_str is NULL, all persistent handles of all providers with a
+ * matching \a ident_str will be cleaned up.
+ *
+ * If \a ident_str is NULL all persistent handles of the provider will be
+ * cleaned up.
+ *
+ * Ergo, if both, \a name_str and \a ident_str are NULL, then all
+ * persistent handles will be cleaned up.
+ *
+ * You must call this in MSHUTDOWN, if your resource factory ops hold a
+ * registered php_resource_factory::dtor, else the dtor will point to
+ * memory not any more available if the extension has already been unloaded.
+ *
+ * @param name_str the provider name; may be NULL
+ * @param name_len the provider name length
+ * @param ident_str the subsidiary namespace name; may be NULL
+ * @param ident_len the subsidiary namespace name length
+ */
+PHP_RAPHF_API void php_persistent_handle_cleanup(const char *name_str,
+ size_t name_len, const char *ident_str, size_t ident_len TSRMLS_DC);
+
+/**
+ * Retrieve statistics about the current process/thread's persistent handles.
+ *
+ * @return a HashTable like:
+ * ~~~~~~~~~~~~~~~
+ * [
+ * "name" => [
+ * "ident" => [
+ * "used" => 1,
+ * "free" => 0,
+ * ]
+ * ]
+ * ]
+ * ~~~~~~~~~~~~~~~
+ */
+PHP_RAPHF_API HashTable *php_persistent_handle_statall(HashTable *ht TSRMLS_DC);
+
+#endif /* PHP_RAPHF_API_H */
+
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: noet sw=4 ts=4 fdm=marker
+ * vim<600: noet sw=4 ts=4
+ */
projects / m6w6 / ext-raphf / blobdiff