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Implement C23's free_sized and free_aligned_sized

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[N2699 - Sized Memory Deallocation](https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2699.htm)
introduced two new functions which were incorporated into the C23
standard, `free_sized` and `free_aligned_sized`. Both already have
analogues in Jemalloc, all we are doing here is adding the appropriate
wrappers.
This commit is contained in:
Kevin Svetlitski 2023-07-14 13:14:06 -07:00 • committed by Qi Wang
parent 41e0b857be
commit cdb2c0e02f
5 changed files with 75 additions and 1 deletions
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12
configure.ac
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@ -1105,7 +1105,7 @@ AC_ARG_WITH([export],
fi]
)
public_syms="aligned_alloc calloc dallocx free mallctl mallctlbymib mallctlnametomib malloc malloc_conf malloc_conf_2_conf_harder malloc_message malloc_stats_print malloc_usable_size mallocx smallocx_${jemalloc_version_gid} nallocx posix_memalign rallocx realloc sallocx sdallocx xallocx"
public_syms="aligned_alloc calloc dallocx free free_sized free_aligned_sized mallctl mallctlbymib mallctlnametomib malloc malloc_conf malloc_conf_2_conf_harder malloc_message malloc_stats_print malloc_usable_size mallocx smallocx_${jemalloc_version_gid} nallocx posix_memalign rallocx realloc sallocx sdallocx xallocx"
dnl Check for additional platform-specific public API functions.
AC_CHECK_FUNC([memalign],
[AC_DEFINE([JEMALLOC_OVERRIDE_MEMALIGN], [ ], [ ])
@ -1129,6 +1129,16 @@ if test "x${JEMALLOC_PREFIX}" = "x" ; then
AC_CHECK_FUNC([__libc_free],
[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_FREE], [ ], [ ])
wrap_syms="${wrap_syms} __libc_free"])
dnl __libc_free_sized and __libc_free_aligned_sized are here speculatively
dnl under the assumption that glibc will eventually define symbols with these
dnl names. In the event glibc chooses different names for these symbols,
dnl these will need to be amended to match.
AC_CHECK_FUNC([__libc_free_sized],
[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_FREE_SIZED], [ ], [ ])
wrap_syms="${wrap_syms} __libc_free_sized"])
AC_CHECK_FUNC([__libc_free_aligned_sized],
[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_FREE_ALIGNED_SIZED], [ ], [ ])
wrap_syms="${wrap_syms} __libc_free_aligned_sized"])
AC_CHECK_FUNC([__libc_malloc],
[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_MALLOC], [ ], [ ])
wrap_syms="${wrap_syms} __libc_malloc"])