f17f7e6305
This subsystem is a spin-off of the mmap_cache subsystem. The mmap_cache subsystem had two features: (1) tracking the change of memory mapping, and (2) maintaining the cache of memory mapping. mmap_notify is a subsystem specialized to provide feature (2). unwind-libdw itself has the feature (1). It needs only (2). * mmap_notify.h: New file. * mmap_notify.c: Likewise. * Makefile.am (strace_SOURCES): Add them. Signed-off-by: Masatake YAMATO <yamato@redhat.com>
55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/*
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* Copyright (c) 2018 The strace developers.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "mmap_notify.h"
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struct mmap_notify_client {
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mmap_notify_fn fn;
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void *data;
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struct mmap_notify_client *next;
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};
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static struct mmap_notify_client *clients;
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void
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mmap_notify_register_client(mmap_notify_fn fn, void *data)
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{
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struct mmap_notify_client *client = xmalloc(sizeof(*client));
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client->fn = fn;
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client->data = data;
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client->next = clients;
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clients = client;
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}
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void
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mmap_notify_report(struct tcb *tcp)
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{
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struct mmap_notify_client *client;
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for (client = clients; client; client = client->next)
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client->fn(tcp, client->data);
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}
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