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9dad716d4d
Wean mtrace away from the malloc hooks and move them into the debug DSO. Split the API away from the implementation so that we can add the API to libc.so as well as libc_malloc_debug.so, with the libc implementations being empty. Update localplt data since memalign no longer has any callers after this change. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/* mtrace API for `malloc'.
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Copyright (C) 1991-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written April 2, 1991 by John Gilmore of Cygnus Support.
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Based on mcheck.c by Mike Haertel.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#if !IS_IN (libc)
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# include "mtrace-impl.c"
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#else
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# include <shlib-compat.h>
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# include <libc-symbols.h>
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#endif
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#if IS_IN (libc) && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_34)
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/* Compatibility symbols that were introduced to help break at allocation sites
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for specific memory allocations. This is unusable with ASLR, although gdb
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may allow predictable allocation addresses. Even then, gdb has watchpoint
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and conditional breakpoint support which should provide the same
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functionality without having this kludge. These symbols are preserved in
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case some applications ended up linking against them but they don't actually
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do anything anymore; not that they did much before anyway. */
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void *mallwatch;
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compat_symbol (libc, mallwatch, mallwatch, GLIBC_2_0);
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void
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tr_break (void)
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{
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}
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compat_symbol (libc, tr_break, tr_break, GLIBC_2_0);
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#endif
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void
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mtrace (void)
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{
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#if !IS_IN (libc)
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do_mtrace ();
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#endif
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}
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void
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muntrace (void)
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{
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#if !IS_IN (libc)
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do_muntrace ();
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#endif
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}
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