X-Git-Url: https://git.saurik.com/apple/libpthread.git/blobdiff_plain/45deb508575711c47d78d19e326a9a26e43e63e0..c1f56ec94c29e576da2d6d7164bee1bdb2f02471:/pthread/introspection.h

diff --git a/pthread/introspection.h b/pthread/introspection.h
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-/*
- * Copyright (c) 2013, 2016 Apple Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-#ifndef __PTHREAD_INTROSPECTION__
-#define __PTHREAD_INTROSPECTION__
-
-#include <sys/cdefs.h>
-#include <pthread/pthread.h>
-#include <Availability.h>
-
-/*!
- * @header
- *
- * @abstract
- * Introspection API for libpthread.
- *
- * This should only be used for introspection and debugging tools.  Do not rely
- * on it in shipping code.
- */
-
-__BEGIN_DECLS
-
-/*!
- * @typedef pthread_introspection_hook_t
- *
- * @abstract
- * A function pointer called at various points in a PThread's lifetime.  The
- * function must be able to be called in contexts with invalid thread state.
- *
- * @param event
- * One of the events in pthread_introspection_event_t.
- *
- * @param thread
- * pthread_t associated with the event.
- *
- * @param addr
- * Address associated with the event, e.g. stack address.
- *
- * @param size
- * Size associated with the event, e.g. stack size.
- */
-typedef void (*pthread_introspection_hook_t)(unsigned int event,
-		pthread_t thread, void *addr, size_t size);
-
-/*!
- * @enum pthread_introspection_event_t
- * Events sent by libpthread about threads lifetimes.
- *
- * @const PTHREAD_INTROSPECTION_THREAD_CREATE
- * The specified pthread_t was created, and there will be a paired
- * PTHREAD_INTROSPECTION_THREAD_DESTROY event. However, there may not be
- * a START/TERMINATE pair of events for this pthread_t.
- *
- * Starting with macOS 10.14, and iOS 12, this event is always sent before
- * PTHREAD_INTROSPECTION_THREAD_START is sent. This event is however not sent
- * for the main thread.
- *
- * This event may not be sent from the context of the passed in pthread_t.
- *
- * Note that all properties of this thread may not be functional yet, and it is
- * not permitted to call functions on this thread past observing its address.
- *
- * @const PTHREAD_INTROSPECTION_THREAD_START
- * Thread has started and its stack was allocated. There will be a matching
- * PTHREAD_INTROSPECTION_THREAD_TERMINATE event.
- *
- * This event is always sent from the context of the passed in pthread_t.
- *
- * @const PTHREAD_INTROSPECTION_THREAD_TERMINATE
- * Thread is about to be terminated and stack will be deallocated. This always
- * matches a PTHREAD_INTROSPECTION_THREAD_START event.
- *
- * This event is always sent from the context of the passed in pthread_t.
- *
- * @const PTHREAD_INTROSPECTION_THREAD_DESTROY
- * pthread_t is about to be destroyed. This always matches
- * a PTHREAD_INTROSPECTION_THREAD_CREATE event, but there may not have been
- * a START/TERMINATE pair of events for this pthread_t.
- *
- * This event may not be sent from the context of the passed in pthread_t.
- */
-enum {
-	PTHREAD_INTROSPECTION_THREAD_CREATE = 1,
-	PTHREAD_INTROSPECTION_THREAD_START,
-	PTHREAD_INTROSPECTION_THREAD_TERMINATE,
-	PTHREAD_INTROSPECTION_THREAD_DESTROY,
-};
-
-/*!
- * @function pthread_introspection_hook_install
- *
- * @abstract
- * Install introspection hook function into libpthread.
- *
- * @discussion
- * The caller is responsible for implementing chaining to the hook that was
- * previously installed (if any).
- *
- * @param hook
- * Pointer to hook function.
- *
- * @result
- * Previously installed hook function or NULL.
- */
-
-__API_AVAILABLE(macos(10.9), ios(7.0))
-__attribute__((__nonnull__, __warn_unused_result__))
-extern pthread_introspection_hook_t
-pthread_introspection_hook_install(pthread_introspection_hook_t hook);
-
-__END_DECLS
-
-#endif