platform_bionic/libc/bionic/malloc_common_dynamic.h

/*
 * Copyright (C) 2019 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

#include <pthread.h>
#include <stdatomic.h>

#include <private/bionic_globals.h>
#include <private/bionic_malloc_dispatch.h>

// Function prototypes.
bool InitSharedLibrary(void* impl_handle, const char* shared_lib, const char* prefix,
                       MallocDispatch* dispatch_table);

void* LoadSharedLibrary(const char* shared_lib, const char* prefix, MallocDispatch* dispatch_table);

bool FinishInstallHooks(libc_globals* globals, const char* options, const char* prefix);

// Lock for globals, to guarantee that only one thread is doing a mutate.
extern pthread_mutex_t gGlobalsMutateLock;
extern _Atomic bool gGlobalsMutating;

// Function hooks instantiations, used by dispatch-table allocators to install themselves.
void SetGlobalFunctions(void* functions[]);