diff options
author | Jonathan Wakely <jwakely@redhat.com> | 2018-07-24 22:09:55 +0100 |
---|---|---|
committer | Jonathan Wakely <redi@gcc.gnu.org> | 2018-07-24 22:09:55 +0100 |
commit | dfaa3c47cc0a5e858ff45e0f2ab4d686048f718e (patch) | |
tree | 2fa7f48a9def9b3dad9d767bd6a1148ed6d72af4 /libstdc++-v3/src | |
parent | e874029dd994ce1dd098a143aa06a0894da7b7de (diff) |
Add initial version of C++17 <memory_resource> header
This is missing the synchronized_pool_resource and
unsynchronized_pool_resource classes but is otherwise complete.
This is a new implementation, not based on the existing code in
<experimental/memory_resource>, but memory_resource and
polymorphic_allocator ended up looking almost the same anyway.
The constant_init kluge in src/c++17/memory_resource.cc is apparently
due to Richard Smith and ensures that the objects are constructed during
constant initialiation phase and not destroyed (because the
constant_init destructor doesn't destroy the union member and the
storage is not reused).
* config/abi/pre/gnu.ver: Export new symbols.
* configure: Regenerate.
* include/Makefile.am: Add new <memory_resource> header.
* include/Makefile.in: Regenerate.
* include/precompiled/stdc++.h: Include <memory_resource> for C++17.
* include/std/memory_resource: New header.
(memory_resource, polymorphic_allocator, new_delete_resource)
(null_memory_resource, set_default_resource, get_default_resource)
(pool_options, monotonic_buffer_resource): Define.
* src/Makefile.am: Add c++17 directory.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.am: Fix comment.
* src/c++17/Makefile.am: Add makefile for new sub-directory.
* src/c++17/Makefile.in: Generate.
* src/c++17/memory_resource.cc: New.
(newdel_res_t, null_res_t, constant_init, newdel_res, null_res)
(default_res, new_delete_resource, null_memory_resource)
(set_default_resource, get_default_resource): Define.
* testsuite/20_util/memory_resource/1.cc: New test.
* testsuite/20_util/memory_resource/2.cc: New test.
* testsuite/20_util/monotonic_buffer_resource/1.cc: New test.
* testsuite/20_util/monotonic_buffer_resource/allocate.cc: New test.
* testsuite/20_util/monotonic_buffer_resource/deallocate.cc: New test.
* testsuite/20_util/monotonic_buffer_resource/release.cc: New test.
* testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc:
New test.
* testsuite/20_util/polymorphic_allocator/1.cc: New test.
* testsuite/20_util/polymorphic_allocator/resource.cc: New test.
* testsuite/20_util/polymorphic_allocator/select.cc: New test.
* testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource):
Define concrete memory resource for testing.
(__gnu_test::default_resource_mgr): Define RAII helper for changing
default resource.
From-SVN: r262953
Diffstat (limited to 'libstdc++-v3/src')
-rw-r--r-- | libstdc++-v3/src/Makefile.am | 13 | ||||
-rw-r--r-- | libstdc++-v3/src/Makefile.in | 15 | ||||
-rw-r--r-- | libstdc++-v3/src/c++11/Makefile.am | 2 | ||||
-rw-r--r-- | libstdc++-v3/src/c++17/Makefile.am | 111 | ||||
-rw-r--r-- | libstdc++-v3/src/c++17/Makefile.in | 654 | ||||
-rw-r--r-- | libstdc++-v3/src/c++17/memory_resource.cc | 111 |
6 files changed, 894 insertions, 12 deletions
diff --git a/libstdc++-v3/src/Makefile.am b/libstdc++-v3/src/Makefile.am index ba30dde8fec..09edcdbc471 100644 --- a/libstdc++-v3/src/Makefile.am +++ b/libstdc++-v3/src/Makefile.am @@ -28,7 +28,7 @@ else filesystem_dir = endif -SUBDIRS = c++98 c++11 $(filesystem_dir) +SUBDIRS = c++98 c++11 c++17 $(filesystem_dir) # Cross compiler support. if VTV_CYGMIN @@ -58,6 +58,7 @@ endif vpath % $(top_srcdir)/src/c++98 vpath % $(top_srcdir)/src/c++11 +vpath % $(top_srcdir)/src/c++17 if ENABLE_FILESYSTEM_TS vpath % $(top_srcdir)/src/filesystem endif @@ -92,13 +93,15 @@ libstdc___la_LIBADD = \ $(GLIBCXX_LIBS) \ $(top_builddir)/libsupc++/libsupc++convenience.la \ $(top_builddir)/src/c++98/libc++98convenience.la \ - $(top_builddir)/src/c++11/libc++11convenience.la + $(top_builddir)/src/c++11/libc++11convenience.la \ + $(top_builddir)/src/c++17/libc++17convenience.la libstdc___la_DEPENDENCIES = \ ${version_dep} \ $(top_builddir)/libsupc++/libsupc++convenience.la \ $(top_builddir)/src/c++98/libc++98convenience.la \ - $(top_builddir)/src/c++11/libc++11convenience.la + $(top_builddir)/src/c++11/libc++11convenience.la \ + $(top_builddir)/src/c++17/libc++17convenience.la libstdc___la_LDFLAGS = \ -version-info $(libtool_VERSION) ${version_arg} -lm @@ -148,8 +151,8 @@ compatibility-condvar.o: compatibility-condvar.cc # Thus, the shared libs have more compat symbols, which can be found # segregated in the sources with -D_GLIBCXX_SHARED. # -# In the sub-directories of libsupc++, src/c++98, src/c++11, only -# -prefer-pic objects are generated for the convenience libraries. +# In the sub-directories of libsupc++, src/c++98, src/c++11, src/c++17, +# only -prefer-pic objects are generated for the convenience libraries. # # In the main src directory, make shared and static objects just for # the compat libraries. Shared objects are compiled with -prefer-pic diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in index d427ed539da..901533e528b 100644 --- a/libstdc++-v3/src/Makefile.in +++ b/libstdc++-v3/src/Makefile.in @@ -152,7 +152,7 @@ AM_RECURSIVE_TARGETS = $(RECURSIVE_TARGETS:-recursive=) \ $(RECURSIVE_CLEAN_TARGETS:-recursive=) tags TAGS ctags CTAGS ETAGS = etags CTAGS = ctags -DIST_SUBDIRS = c++98 c++11 filesystem +DIST_SUBDIRS = c++98 c++11 c++17 filesystem ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@ ACLOCAL = @ACLOCAL@ ALLOCATOR_H = @ALLOCATOR_H@ @@ -379,7 +379,7 @@ WARN_CXXFLAGS = \ AM_CPPFLAGS = $(GLIBCXX_INCLUDES) $(CPPFLAGS) @ENABLE_FILESYSTEM_TS_FALSE@filesystem_dir = @ENABLE_FILESYSTEM_TS_TRUE@filesystem_dir = filesystem -SUBDIRS = c++98 c++11 $(filesystem_dir) +SUBDIRS = c++98 c++11 c++17 $(filesystem_dir) @VTV_CYGMIN_FALSE@toolexeclib_LTLIBRARIES = libstdc++.la # Cross compiler support. @@ -419,13 +419,15 @@ libstdc___la_LIBADD = \ $(GLIBCXX_LIBS) \ $(top_builddir)/libsupc++/libsupc++convenience.la \ $(top_builddir)/src/c++98/libc++98convenience.la \ - $(top_builddir)/src/c++11/libc++11convenience.la + $(top_builddir)/src/c++11/libc++11convenience.la \ + $(top_builddir)/src/c++17/libc++17convenience.la libstdc___la_DEPENDENCIES = \ ${version_dep} \ $(top_builddir)/libsupc++/libsupc++convenience.la \ $(top_builddir)/src/c++98/libc++98convenience.la \ - $(top_builddir)/src/c++11/libc++11convenience.la + $(top_builddir)/src/c++11/libc++11convenience.la \ + $(top_builddir)/src/c++17/libc++17convenience.la libstdc___la_LDFLAGS = \ -version-info $(libtool_VERSION) ${version_arg} -lm @@ -440,8 +442,8 @@ libstdc___la_LINK = $(CXXLINK) $(libstdc___la_LDFLAGS) # Thus, the shared libs have more compat symbols, which can be found # segregated in the sources with -D_GLIBCXX_SHARED. # -# In the sub-directories of libsupc++, src/c++98, src/c++11, only -# -prefer-pic objects are generated for the convenience libraries. +# In the sub-directories of libsupc++, src/c++98, src/c++11, src/c++17, +# only -prefer-pic objects are generated for the convenience libraries. # # In the main src directory, make shared and static objects just for # the compat libraries. Shared objects are compiled with -prefer-pic @@ -900,6 +902,7 @@ uninstall-am: uninstall-toolexeclibLTLIBRARIES vpath % $(top_srcdir)/src/c++98 vpath % $(top_srcdir)/src/c++11 +vpath % $(top_srcdir)/src/c++17 @ENABLE_FILESYSTEM_TS_TRUE@vpath % $(top_srcdir)/src/filesystem # Use special rules for compatibility-ldbl.cc compilation, as we need to diff --git a/libstdc++-v3/src/c++11/Makefile.am b/libstdc++-v3/src/c++11/Makefile.am index 91bf6f8d642..a22258782cb 100644 --- a/libstdc++-v3/src/c++11/Makefile.am +++ b/libstdc++-v3/src/c++11/Makefile.am @@ -1,4 +1,4 @@ -## Makefile for the C++03 sources of the GNU C++ Standard library. +## Makefile for the C++11 sources of the GNU C++ Standard library. ## ## Copyright (C) 1997-2018 Free Software Foundation, Inc. ## diff --git a/libstdc++-v3/src/c++17/Makefile.am b/libstdc++-v3/src/c++17/Makefile.am new file mode 100644 index 00000000000..21b64b52dc2 --- /dev/null +++ b/libstdc++-v3/src/c++17/Makefile.am @@ -0,0 +1,111 @@ +## Makefile for the C++17 sources of the GNU C++ Standard library. +## +## Copyright (C) 1997-2018 Free Software Foundation, Inc. +## +## This file is part of the libstdc++ version 3 distribution. +## Process this file with automake to produce Makefile.in. + +## This file is part of the GNU ISO C++ Library. This library is free +## software; you can redistribute it and/or modify it under the +## terms of the GNU General Public License as published by the +## Free Software Foundation; either version 3, or (at your option) +## any later version. + +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. + +## You should have received a copy of the GNU General Public License along +## with this library; see the file COPYING3. If not see +## <http://www.gnu.org/licenses/>. + +include $(top_srcdir)/fragment.am + +# Convenience library for C++17 runtime. +noinst_LTLIBRARIES = libc++17convenience.la + +headers = + +sources = \ + memory_resource.cc + +if ENABLE_DUAL_ABI +extra_string_inst_sources = +else +extra_string_inst_sources = +endif + +if ENABLE_EXTERN_TEMPLATE +# XTEMPLATE_FLAGS = -fno-implicit-templates +inst_sources = \ + $(extra_string_inst_sources) +else +# XTEMPLATE_FLAGS = +inst_sources = +endif + +vpath % $(top_srcdir)/src/c++17 + +libc__17convenience_la_SOURCES = $(sources) $(inst_sources) + +# AM_CXXFLAGS needs to be in each subdirectory so that it can be +# modified in a per-library or per-sub-library way. Need to manually +# set this option because CONFIG_CXXFLAGS has to be after +# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden +# as the occasion calls for it. +AM_CXXFLAGS = \ + -std=gnu++17 \ + $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ + $(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \ + $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) + +AM_MAKEFLAGS = \ + "gxx_include_dir=$(gxx_include_dir)" + +# Libtool notes + +# 1) In general, libtool expects an argument such as `--tag=CXX' when +# using the C++ compiler, because that will enable the settings +# detected when C++ support was being configured. However, when no +# such flag is given in the command line, libtool attempts to figure +# it out by matching the compiler name in each configuration section +# against a prefix of the command line. The problem is that, if the +# compiler name and its initial flags stored in the libtool +# configuration file don't match those in the command line, libtool +# can't decide which configuration to use, and it gives up. The +# correct solution is to add `--tag CXX' to LTCXXCOMPILE and maybe +# CXXLINK, just after $(LIBTOOL), so that libtool doesn't have to +# attempt to infer which configuration to use. +# +# The second tag argument, `--tag disable-shared` means that libtool +# only compiles each source once, for static objects. In actuality, +# glibcxx_lt_pic_flag and glibcxx_compiler_shared_flag are added to +# the libtool command that is used create the object, which is +# suitable for shared libraries. The `--tag disable-shared` must be +# placed after --tag CXX lest things CXX undo the affect of +# disable-shared. + +# 2) Need to explicitly set LTCXXCOMPILE so that EXTRA_CXX_FLAGS is +# last. (That way, things like -O2 passed down from the toplevel can +# be overridden by --enable-debug.) +LTCXXCOMPILE = \ + $(LIBTOOL) --tag CXX --tag disable-shared \ + $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CXX) $(TOPLEVEL_INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS) + +LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS)) + +# 3) We'd have a problem when building the shared libstdc++ object if +# the rules automake generates would be used. We cannot allow g++ to +# be used since this would add -lstdc++ to the link line which of +# course is problematic at this point. So, we get the top-level +# directory to configure libstdc++-v3 to use gcc as the C++ +# compilation driver. +CXXLINK = \ + $(LIBTOOL) --tag CXX --tag disable-shared \ + $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=link $(CXX) \ + $(VTV_CXXLINKFLAGS) \ + $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@ diff --git a/libstdc++-v3/src/c++17/Makefile.in b/libstdc++-v3/src/c++17/Makefile.in new file mode 100644 index 00000000000..40b186e0a77 --- /dev/null +++ b/libstdc++-v3/src/c++17/Makefile.in @@ -0,0 +1,654 @@ +# Makefile.in generated by automake 1.11.6 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software +# Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__make_dryrun = \ + { \ + am__dry=no; \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + echo 'am--echo: ; @echo "AM" OK' | $(MAKE) -f - 2>/dev/null \ + | grep '^AM OK$$' >/dev/null || am__dry=yes;; \ + *) \ + for am__flg in $$MAKEFLAGS; do \ + case $$am__flg in \ + *=*|--*) ;; \ + *n*) am__dry=yes; break;; \ + esac; \ + done;; \ + esac; \ + test $$am__dry = yes; \ + } +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = 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This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +#include <memory_resource> +#include <atomic> +#include <new> + +namespace std _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION +namespace pmr +{ + namespace + { + class newdel_res_t final : public memory_resource + { + void* + do_allocate(size_t __bytes, size_t __alignment) override + { return ::operator new(__bytes, std::align_val_t(__alignment)); } + + void + do_deallocate(void* __p, size_t __bytes, size_t __alignment) noexcept + override + { ::operator delete(__p, __bytes, std::align_val_t(__alignment)); } + + bool + do_is_equal(const memory_resource& __other) const noexcept override + { return &__other == this; } + }; + + class null_res_t final : public memory_resource + { + void* + do_allocate(size_t, size_t) override + { std::__throw_bad_alloc(); } + + void + do_deallocate(void*, size_t, size_t) noexcept override + { } + + bool + do_is_equal(const memory_resource& __other) const noexcept override + { return &__other == this; } + }; + + template<typename T> + struct constant_init + { + union { + unsigned char unused; + T obj; + }; + constexpr constant_init() : obj() { } + + template<typename U> + explicit constexpr constant_init(U arg) : obj(arg) { } + + ~constant_init() { /* do nothing, union member is not destroyed */ } + }; + + constant_init<newdel_res_t> newdel_res{}; + constant_init<null_res_t> null_res{}; + constant_init<atomic<memory_resource*>> default_res{&newdel_res.obj}; + } // namespace + + memory_resource* + new_delete_resource() noexcept + { return &newdel_res.obj; } + + memory_resource* + null_memory_resource() noexcept + { return &null_res.obj; } + + memory_resource* + set_default_resource(memory_resource* r) noexcept + { + if (r == nullptr) + r = new_delete_resource(); + return default_res.obj.exchange(r); + } + + memory_resource* + get_default_resource() noexcept + { return default_res.obj.load(); } + +} // namespace pmr +_GLIBCXX_END_NAMESPACE_VERSION +} // namespace std + + |