d500751443
(Based on proposal at https://sourceware.org/glibc/wiki/ThreadPropertiesAPI) This includes API to: - locate static and dynamic TLS - register thread-exit and dynamic TLS creation/destruction callbacks Change-Id: Icd9d29a5b2f47495395645e19d3b2c96826f19c8
97 lines
3.6 KiB
C
97 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 2020 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
/**
|
|
* @file thread_properties.h
|
|
* @brief Thread properties API.
|
|
*
|
|
* https://sourceware.org/glibc/wiki/ThreadPropertiesAPI
|
|
* API for querying various properties of the current thread, used mostly by
|
|
* the sanitizers.
|
|
*
|
|
* Available since API level 31.
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <unistd.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/**
|
|
* Gets the bounds of static TLS for the current thread.
|
|
*
|
|
* Available since API level 31.
|
|
*/
|
|
void __libc_get_static_tls_bounds(void** __static_tls_begin,
|
|
void** __static_tls_end) __INTRODUCED_IN(31);
|
|
|
|
|
|
/**
|
|
* Registers callback to be called right before the thread is dead.
|
|
* The callbacks are chained, they are called in the order opposite to the order
|
|
* they were registered.
|
|
*
|
|
* The callbacks must be registered only before any threads were created.
|
|
* No signals may arrive during the calls to these callbacks.
|
|
* The callbacks may not access the thread's dynamic TLS because they will have
|
|
* been freed by the time these callbacks are invoked.
|
|
*
|
|
* Available since API level 31.
|
|
*/
|
|
void __libc_register_thread_exit_callback(void (*__cb)(void)) __INTRODUCED_IN(31);
|
|
|
|
/**
|
|
* Iterates over all dynamic TLS chunks for the given thread.
|
|
* The thread should have been suspended. It is undefined-behaviour if there is concurrent
|
|
* modification of the target thread's dynamic TLS.
|
|
*
|
|
* Available since API level 31.
|
|
*/
|
|
void __libc_iterate_dynamic_tls(pid_t __tid,
|
|
void (*__cb)(void* __dynamic_tls_begin,
|
|
void* __dynamic_tls_end,
|
|
size_t __dso_id,
|
|
void* __arg),
|
|
void* __arg) __INTRODUCED_IN(31);
|
|
|
|
/**
|
|
* Register on_creation and on_destruction callbacks, which will be called after a dynamic
|
|
* TLS creation and before a dynamic TLS destruction, respectively.
|
|
*
|
|
* Available since API level 31.
|
|
*/
|
|
void __libc_register_dynamic_tls_listeners(
|
|
void (*__on_creation)(void* __dynamic_tls_begin,
|
|
void* __dynamic_tls_end),
|
|
void (*__on_destruction)(void* __dynamic_tls_begin,
|
|
void* __dynamic_tls_end)) __INTRODUCED_IN(31);
|
|
|
|
__END_DECLS
|