jemalloc cpp new/delete bindings

Adds cpp bindings for jemalloc, along with necessary autoconf settings. This is mostly to add sized deallocation support, which can't be added from C directly. Sized deallocation is ~10% microbench improvement. * Import ax_cxx_compile_stdcxx.m4 from the autoconf repo, seems like the easiest way to get c++14 detection. * Adds various other changes, like CXXFLAGS, to configure.ac. * Adds new rules to Makefile.in for src/jemalloc-cpp.cpp, and a basic unittest. * Both new and delete are overridden, to ensure jemalloc is used for both. * TODO future enhancement of avoiding extra PLT thunks for new and delete - sdallocx and malloc are publicly exported jemalloc symbols, using an alias would link them directly. Unfortunately, was having trouble getting it to play nice with jemalloc's namespace support. Testing: Tested gcc 4.8, gcc 5, gcc 5.2, clang 4.0. Only gcc >= 5 has sized deallocation support, verified that the rest build correctly. Tested mac osx and Centos. Tested --with-jemalloc-prefix and --without-export. This resolves #202.
2016-10-23 15:56:30 -07:00 · 2016-10-23 15:56:30 -07:00 · 2319152d9f
commit 2319152d9f
parent d4c5aceb7c
13 changed files with 905 additions and 25 deletions
--- a/.gitignore
+++ b/.gitignore
@ -54,6 +54,13 @@ test/include/test/jemalloc_test_defs.h
 /test/integration/*.gcno
 /test/integration/*.out

+/test/integration/cpp/[A-Za-z]*
+!/test/integration/cpp/[A-Za-z]*.*
+/test/integration/cpp/*.[od]
+/test/integration/cpp/*.gcda
+/test/integration/cpp/*.gcno
+/test/integration/cpp/*.out
+
 /test/src/*.[od]
 /test/src/*.gcda
 /test/src/*.gcno
--- a/4
+++ b/4
@ -208,6 +208,10 @@ any of the following arguments (not a definitive list) to 'configure':
    intended as a workaround for systems that place security limitations on
    syscall(2).

+--disable-cxx
+    Disable C++ integration.  This will cause new and delete operator
+    implementations to be omitted.
+
 --with-xslroot=<path>
    Specify where to find DocBook XSL stylesheets when building the
    documentation.
--- a/Makefile.in
+++ b/Makefile.in
@ -9,6 +9,7 @@ vpath % .
 SHELL := /bin/sh

 CC := @CC@
+CXX := @CXX@

 # Configuration parameters.
 DESTDIR =
@ -26,6 +27,8 @@ abs_objroot := @abs_objroot@
 CPPFLAGS := @CPPFLAGS@ -I$(srcroot)include -I$(objroot)include
 EXTRA_CFLAGS := @EXTRA_CFLAGS@
 CFLAGS := @CFLAGS@ $(EXTRA_CFLAGS)
+EXTRA_CXXFLAGS := @EXTRA_CXXFLAGS@
+CXXFLAGS := @CXXFLAGS@ $(EXTRA_CXXFLAGS)
 LDFLAGS := @LDFLAGS@
 EXTRA_LDFLAGS := @EXTRA_LDFLAGS@
 LIBS := @LIBS@
@ -140,8 +143,10 @@ C_TESTLIB_SRCS := $(srcroot)test/src/btalloc.c $(srcroot)test/src/btalloc_0.c \
 	$(srcroot)test/src/thd.c $(srcroot)test/src/timer.c
 ifeq (1, $(link_whole_archive))
 C_UTIL_INTEGRATION_SRCS :=
+C_UTIL_CPP_SRCS :=
 else
 C_UTIL_INTEGRATION_SRCS := $(srcroot)src/nstime.c $(srcroot)src/util.c
+C_UTIL_CPP_SRCS := $(srcroot)src/nstime.c $(srcroot)src/util.c
 endif
 TESTS_UNIT := \
 	$(srcroot)test/unit/a0.c \
@ -195,11 +200,21 @@ TESTS_INTEGRATION := $(srcroot)test/integration/aligned_alloc.c \
 	$(srcroot)test/integration/thread_arena.c \
 	$(srcroot)test/integration/thread_tcache_enabled.c \
 	$(srcroot)test/integration/xallocx.c
+ifeq (@enable_cxx@, 1)
+CPP_SRCS := $(srcroot)src/jemalloc_cpp.cpp
+TESTS_INTEGRATION_CPP := $(srcroot)test/integration/cpp/basic.cpp
+else
+CPP_SRCS :=
+TESTS_INTEGRATION_CPP :=
+endif
 TESTS_STRESS := $(srcroot)test/stress/microbench.c
-TESTS := $(TESTS_UNIT) $(TESTS_INTEGRATION) $(TESTS_STRESS)
+
+TESTS := $(TESTS_UNIT) $(TESTS_INTEGRATION) $(TESTS_INTEGRATION_CPP) $(TESTS_STRESS)

 C_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.$(O))
+CPP_OBJS := $(CPP_SRCS:$(srcroot)%.cpp=$(objroot)%.$(O))
 C_PIC_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.pic.$(O))
+CPP_PIC_OBJS := $(CPP_SRCS:$(srcroot)%.cpp=$(objroot)%.pic.$(O))
 C_JET_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.jet.$(O))
 C_TESTLIB_UNIT_OBJS := $(C_TESTLIB_SRCS:$(srcroot)%.c=$(objroot)%.unit.$(O))
 C_TESTLIB_INTEGRATION_OBJS := $(C_TESTLIB_SRCS:$(srcroot)%.c=$(objroot)%.integration.$(O))
@ -209,15 +224,17 @@ C_TESTLIB_OBJS := $(C_TESTLIB_UNIT_OBJS) $(C_TESTLIB_INTEGRATION_OBJS) $(C_UTIL_

 TESTS_UNIT_OBJS := $(TESTS_UNIT:$(srcroot)%.c=$(objroot)%.$(O))
 TESTS_INTEGRATION_OBJS := $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%.$(O))
+TESTS_INTEGRATION_CPP_OBJS := $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%.$(O))
 TESTS_STRESS_OBJS := $(TESTS_STRESS:$(srcroot)%.c=$(objroot)%.$(O))
 TESTS_OBJS := $(TESTS_UNIT_OBJS) $(TESTS_INTEGRATION_OBJS) $(TESTS_STRESS_OBJS)
+TESTS_CPP_OBJS := $(TESTS_INTEGRATION_CPP_OBJS)

 .PHONY: all dist build_doc_html build_doc_man build_doc
 .PHONY: install_bin install_include install_lib
 .PHONY: install_doc_html install_doc_man install_doc install
 .PHONY: tests check clean distclean relclean

-.SECONDARY : $(TESTS_OBJS)
+.SECONDARY : $(TESTS_OBJS) $(TESTS_CPP_OBJS)

 # Default target.
 all: build_lib
@ -239,15 +256,21 @@ build_doc: $(DOCS)
 #
 ifdef CC_MM
 -include $(C_OBJS:%.$(O)=%.d)
+-include $(CPP_OBJS:%.$(O)=%.d)
 -include $(C_PIC_OBJS:%.$(O)=%.d)
+-include $(CPP_PIC_OBJS:%.$(O)=%.d)
 -include $(C_JET_OBJS:%.$(O)=%.d)
 -include $(C_TESTLIB_OBJS:%.$(O)=%.d)
 -include $(TESTS_OBJS:%.$(O)=%.d)
+-include $(TESTS_CPP_OBJS:%.$(O)=%.d)
 endif

 $(C_OBJS): $(objroot)src/%.$(O): $(srcroot)src/%.c
+$(CPP_OBJS): $(objroot)src/%.$(O): $(srcroot)src/%.cpp
 $(C_PIC_OBJS): $(objroot)src/%.pic.$(O): $(srcroot)src/%.c
 $(C_PIC_OBJS): CFLAGS += $(PIC_CFLAGS)
+$(CPP_PIC_OBJS): $(objroot)src/%.pic.$(O): $(srcroot)src/%.cpp
+$(CPP_PIC_OBJS): CXXFLAGS += $(PIC_CFLAGS)
 $(C_JET_OBJS): $(objroot)src/%.jet.$(O): $(srcroot)src/%.c
 $(C_JET_OBJS): CFLAGS += -DJEMALLOC_JET
 $(C_TESTLIB_UNIT_OBJS): $(objroot)test/src/%.unit.$(O): $(srcroot)test/src/%.c
@ -260,11 +283,14 @@ $(C_TESTLIB_STRESS_OBJS): CPPFLAGS += -DJEMALLOC_STRESS_TEST -DJEMALLOC_STRESS_T
 $(C_TESTLIB_OBJS): CPPFLAGS += -I$(srcroot)test/include -I$(objroot)test/include
 $(TESTS_UNIT_OBJS): CPPFLAGS += -DJEMALLOC_UNIT_TEST
 $(TESTS_INTEGRATION_OBJS): CPPFLAGS += -DJEMALLOC_INTEGRATION_TEST
+$(TESTS_INTEGRATION_CPP_OBJS): CPPFLAGS += -DJEMALLOC_INTEGRATION_CPP_TEST
 $(TESTS_STRESS_OBJS): CPPFLAGS += -DJEMALLOC_STRESS_TEST
 $(TESTS_OBJS): $(objroot)test/%.$(O): $(srcroot)test/%.c
+$(TESTS_CPP_OBJS): $(objroot)test/%.$(O): $(srcroot)test/%.cpp
 $(TESTS_OBJS): CPPFLAGS += -I$(srcroot)test/include -I$(objroot)test/include
+$(TESTS_CPP_OBJS): CPPFLAGS += -I$(srcroot)test/include -I$(objroot)test/include
 ifneq ($(IMPORTLIB),$(SO))
-$(C_OBJS) $(C_JET_OBJS): CPPFLAGS += -DDLLEXPORT
+$(CPP_OBJS) $(C_OBJS) $(C_JET_OBJS): CPPFLAGS += -DDLLEXPORT
 endif

 ifndef CC_MM
@ -272,8 +298,8 @@ ifndef CC_MM
 HEADER_DIRS = $(srcroot)include/jemalloc/internal \
 	$(objroot)include/jemalloc $(objroot)include/jemalloc/internal
 HEADERS = $(wildcard $(foreach dir,$(HEADER_DIRS),$(dir)/*.h))
-$(C_OBJS) $(C_PIC_OBJS) $(C_JET_OBJS) $(C_TESTLIB_OBJS) $(TESTS_OBJS): $(HEADERS)
-$(TESTS_OBJS): $(objroot)test/include/test/jemalloc_test.h
+$(C_OBJS) $(CPP_OBJS) $(C_PIC_OBJS) $(CPP_PIC_OBJS) $(C_JET_OBJS) $(C_TESTLIB_OBJS) $(TESTS_OBJS): $(HEADERS)
+$(TESTS_OBJS) $(TESTS_CPP_OBJS): $(objroot)test/include/test/jemalloc_test.h
 endif

 $(C_OBJS) $(C_PIC_OBJS) $(C_JET_OBJS) $(C_TESTLIB_OBJS) $(TESTS_OBJS): %.$(O):
@ -283,19 +309,26 @@ ifdef CC_MM
 	@$(CC) -MM $(CPPFLAGS) -MT $@ -o $(@:%.$(O)=%.d) $<
 endif

+$(CPP_OBJS) $(CPP_PIC_OBJS) $(TESTS_CPP_OBJS): %.$(O):
+	@mkdir -p $(@D)
+	$(CXX) $(CXXFLAGS) -c $(CPPFLAGS) $(CTARGET) $<
+ifdef CC_MM
+	@$(CXX) -MM $(CPPFLAGS) -MT $@ -o $(@:%.$(O)=%.d) $<
+endif
+
 ifneq ($(SOREV),$(SO))
 %.$(SO) : %.$(SOREV)
 	@mkdir -p $(@D)
 	ln -sf $(<F) $@
 endif

-$(objroot)lib/$(LIBJEMALLOC).$(SOREV) : $(if $(PIC_CFLAGS),$(C_PIC_OBJS),$(C_OBJS))
+$(objroot)lib/$(LIBJEMALLOC).$(SOREV) : $(if $(PIC_CFLAGS),$(C_PIC_OBJS),$(C_OBJS)) $(if $(PIC_CFLAGS),$(CPP_PIC_OBJS),$(CPP_OBJS))
 	@mkdir -p $(@D)
 	$(CC) $(DSO_LDFLAGS) $(call RPATH,$(RPATH_EXTRA)) $(LDTARGET) $+ $(LDFLAGS) $(LIBS) $(EXTRA_LDFLAGS)

-$(objroot)lib/$(LIBJEMALLOC)_pic.$(A) : $(C_PIC_OBJS)
-$(objroot)lib/$(LIBJEMALLOC).$(A) : $(C_OBJS)
-$(objroot)lib/$(LIBJEMALLOC)_s.$(A) : $(C_OBJS)
+$(objroot)lib/$(LIBJEMALLOC)_pic.$(A) : $(C_PIC_OBJS) $(CPP_PIC_OBJS)
+$(objroot)lib/$(LIBJEMALLOC).$(A) : $(C_OBJS) $(CPP_OBJS)
+$(objroot)lib/$(LIBJEMALLOC)_s.$(A) : $(C_OBJS) $(CPP_OBJS)

 $(STATIC_LIBS):
 	@mkdir -p $(@D)
@ -307,7 +340,11 @@ $(objroot)test/unit/%$(EXE): $(objroot)test/unit/%.$(O) $(TESTS_UNIT_LINK_OBJS)

 $(objroot)test/integration/%$(EXE): $(objroot)test/integration/%.$(O) $(C_TESTLIB_INTEGRATION_OBJS) $(C_UTIL_INTEGRATION_OBJS) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
 	@mkdir -p $(@D)
-	$(CC) $(TEST_LD_MODE) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(LJEMALLOC) $(LDFLAGS) $(filter-out -lm,$(filter -lrt -lpthread,$(LIBS))) $(LM) $(EXTRA_LDFLAGS)
+	$(CC) $(TEST_LD_MODE) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(LJEMALLOC) $(LDFLAGS) $(filter-out -lm,$(filter -lrt -lpthread -lstdc++,$(LIBS))) $(LM) $(EXTRA_LDFLAGS)
+
+$(objroot)test/integration/cpp/%$(EXE): $(objroot)test/integration/cpp/%.$(O) $(C_TESTLIB_INTEGRATION_OBJS) $(C_UTIL_INTEGRATION_OBJS) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
+	@mkdir -p $(@D)
+	$(CXX) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB) $(LDFLAGS) $(filter-out -lm,$(LIBS)) -lm $(EXTRA_LDFLAGS)

 $(objroot)test/stress/%$(EXE): $(objroot)test/stress/%.$(O) $(C_JET_OBJS) $(C_TESTLIB_STRESS_OBJS) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
 	@mkdir -p $(@D)
@ -373,7 +410,7 @@ install_doc: install_doc_html install_doc_man
 install: install_bin install_include install_lib install_doc

 tests_unit: $(TESTS_UNIT:$(srcroot)%.c=$(objroot)%$(EXE))
-tests_integration: $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%$(EXE))
+tests_integration: $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%$(EXE)) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%$(EXE))
 tests_stress: $(TESTS_STRESS:$(srcroot)%.c=$(objroot)%$(EXE))
 tests: tests_unit tests_integration tests_stress

@ -389,14 +426,14 @@ check_unit: tests_unit check_unit_dir
 	$(SHELL) $(objroot)test/test.sh $(TESTS_UNIT:$(srcroot)%.c=$(objroot)%)
 check_integration_prof: tests_integration check_integration_dir
 ifeq ($(enable_prof), 1)
-	$(MALLOC_CONF)="prof:true" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%)
-	$(MALLOC_CONF)="prof:true,prof_active:false" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%)
+	$(MALLOC_CONF)="prof:true" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+	$(MALLOC_CONF)="prof:true,prof_active:false" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
 endif
 check_integration_decay: tests_integration check_integration_dir
-	$(MALLOC_CONF)="decay_time:-1" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%)
-	$(MALLOC_CONF)="decay_time:0" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%)
+	$(MALLOC_CONF)="decay_time:-1" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+	$(MALLOC_CONF)="decay_time:0" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
 check_integration: tests_integration check_integration_dir
-	$(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%)
+	$(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
 stress: tests_stress stress_dir
 	$(SHELL) $(objroot)test/test.sh $(TESTS_STRESS:$(srcroot)%.c=$(objroot)%)
 check: check_unit check_integration check_integration_decay check_integration_prof
@ -412,6 +449,7 @@ coverage_integration: check_integration
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)src integration $(C_UTIL_INTEGRATION_OBJS)
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/src integration $(C_TESTLIB_INTEGRATION_OBJS)
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/integration integration $(TESTS_INTEGRATION_OBJS)
+	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/integration/cpp integration $(TESTS_INTEGRATION_CPP_OBJS)

 coverage_stress: stress
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)src pic $(C_PIC_OBJS)
@ -428,20 +466,29 @@ coverage: check
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/src stress $(C_TESTLIB_STRESS_OBJS)
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/unit unit $(TESTS_UNIT_OBJS) $(TESTS_UNIT_AUX_OBJS)
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/integration integration $(TESTS_INTEGRATION_OBJS)
+	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/integration/cpp integration $(TESTS_INTEGRATION_CPP_OBJS)
 	$(SHELL) $(srcroot)coverage.sh $(srcroot)test/stress integration $(TESTS_STRESS_OBJS)
 endif

 clean:
 	rm -f $(C_OBJS)
+	rm -f $(CPP_OBJS)
 	rm -f $(C_PIC_OBJS)
+	rm -f $(CPP_PIC_OBJS)
 	rm -f $(C_JET_OBJS)
 	rm -f $(C_TESTLIB_OBJS)
 	rm -f $(C_OBJS:%.$(O)=%.d)
 	rm -f $(C_OBJS:%.$(O)=%.gcda)
 	rm -f $(C_OBJS:%.$(O)=%.gcno)
+	rm -f $(CPP_OBJS:%.$(O)=%.d)
+	rm -f $(CPP_OBJS:%.$(O)=%.gcda)
+	rm -f $(CPP_OBJS:%.$(O)=%.gcno)
 	rm -f $(C_PIC_OBJS:%.$(O)=%.d)
 	rm -f $(C_PIC_OBJS:%.$(O)=%.gcda)
 	rm -f $(C_PIC_OBJS:%.$(O)=%.gcno)
+	rm -f $(CPP_PIC_OBJS:%.$(O)=%.d)
+	rm -f $(CPP_PIC_OBJS:%.$(O)=%.gcda)
+	rm -f $(CPP_PIC_OBJS:%.$(O)=%.gcno)
 	rm -f $(C_JET_OBJS:%.$(O)=%.d)
 	rm -f $(C_JET_OBJS:%.$(O)=%.gcda)
 	rm -f $(C_JET_OBJS:%.$(O)=%.gcno)
@ -454,6 +501,12 @@ clean:
 	rm -f $(TESTS_OBJS:%.$(O)=%.gcda)
 	rm -f $(TESTS_OBJS:%.$(O)=%.gcno)
 	rm -f $(TESTS_OBJS:%.$(O)=%.out)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%$(EXE))
+	rm -f $(TESTS_CPP_OBJS)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%.d)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%.gcda)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%.gcno)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%.out)
 	rm -f $(DSOS) $(STATIC_LIBS)
 	rm -f $(objroot)*.gcov.*

--- a/bin/jemalloc-config.in
+++ b/bin/jemalloc-config.in
@ -18,6 +18,7 @@ Options:
  --cc         : Print compiler used to build jemalloc.
  --cflags     : Print compiler flags used to build jemalloc.
  --cppflags   : Print preprocessor flags used to build jemalloc.
+  --cxxflags   : Print C++ compiler flags used to build jemalloc.
  --ldflags    : Print library flags used to build jemalloc.
  --libs       : Print libraries jemalloc was linked against.
 EOF
@ -67,6 +68,9 @@ case "$1" in
 --cppflags)
 	echo "@CPPFLAGS@"
 	;;
+--cxxflags)
+	echo "@CXXFLAGS@"
+	;;
 --ldflags)
 	echo "@LDFLAGS@ @EXTRA_LDFLAGS@"
 	;;
--- a/configure.ac
+++ b/configure.ac
@ -29,6 +29,29 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 )
 ])

+dnl JE_CXXFLAGS_APPEND(cflag)
+AC_DEFUN([JE_CXXFLAGS_APPEND],
+[
+AC_MSG_CHECKING([whether compiler supports $1])
+TCXXFLAGS="${CXXFLAGS}"
+if test "x${CXXFLAGS}" = "x" ; then
+  CXXFLAGS="$1"
+else
+  CXXFLAGS="${CXXFLAGS} $1"
+fi
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+]], [[
+    return 0;
+]])],
+              [je_cv_cflags_appended=$1]
+              AC_MSG_RESULT([yes]),
+              [je_cv_cflags_appended=]
+              AC_MSG_RESULT([no])
+              [CXXFLAGS="${TCXXFLAGS}"]
+)
+])
+
 dnl JE_COMPILABLE(label, hcode, mcode, rvar)
 dnl 
 dnl Use AC_LINK_IFELSE() rather than AC_COMPILE_IFELSE() so that linker errors
@ -211,6 +234,46 @@ fi
 AC_SUBST([EXTRA_CFLAGS])
 AC_PROG_CPP

+AC_ARG_ENABLE([cxx],
+  [AS_HELP_STRING([--disable-cxx], [Disable C++ integration])],
+if test "x$enable_cxx" = "xno" ; then
+  enable_cxx="0"
+else
+  enable_cxx="1"
+fi
+,
+enable_cxx="1"
+)
+if test "x$enable_cxx" = "x1" ; then
+  CXXFLAGS=""
+  dnl Require at least c++14, which is the first version to support sized
+  dnl deallocation.  C++ support is not compiled otherwise.
+  m4_include([m4/ax_cxx_compile_stdcxx.m4])
+  AX_CXX_COMPILE_STDCXX([14], [noext], [optional])
+  if test "x${HAVE_CXX14}" = "x1" ; then
+    JE_CXXFLAGS_APPEND([-Wall])
+    JE_CXXFLAGS_APPEND([-g3])
+
+    SAVED_LIBS="${LIBS}"
+    LIBS="${LIBS} -lstdc++"
+    JE_COMPILABLE([libstdc++ linkage], [
+#include <stdlib.h>
+], [[
+	int *arr = (int *)malloc(sizeof(int) * 42);
+	if (arr == NULL)
+		return (1);
+]], [je_cv_libstdcxx])
+    if test "x${je_cv_libstdcxx}" = "xno" ; then
+      LIBS="${SAVED_LIBS}"
+    fi
+  else
+    enable_cxx="0"
+  fi
+fi
+AC_SUBST([enable_cxx])
+AC_SUBST([CXXFLAGS])
+AC_SUBST([EXTRA_CXXFLAGS])
+
 AC_C_BIGENDIAN([ac_cv_big_endian=1], [ac_cv_big_endian=0])
 if test "x${ac_cv_big_endian}" = "x1" ; then
  AC_DEFINE_UNQUOTED([JEMALLOC_BIG_ENDIAN], [ ])
@ -516,6 +579,7 @@ if test "x${je_cv_attribute}" = "xyes" ; then
  AC_DEFINE([JEMALLOC_HAVE_ATTR], [ ])
  if test "x${GCC}" = "xyes" -a "x${abi}" = "xelf"; then
    JE_CFLAGS_APPEND([-fvisibility=hidden])
+    JE_CXXFLAGS_APPEND([-fvisibility=hidden])
  fi
 fi
 dnl Check for tls_model attribute support (clang 3.0 still lacks support).
@ -824,11 +888,14 @@ if test "x$enable_debug" = "x0" -a "x$no_CFLAGS" = "xyes" ; then
  if test "x${optimize}" = "xyes" ; then
    if test "x$GCC" = "xyes" ; then
      JE_CFLAGS_APPEND([-O3])
+      JE_CXXFLAGS_APPEND([-O3])
      JE_CFLAGS_APPEND([-funroll-loops])
    elif test "x$je_cv_msvc" = "xyes" ; then
      JE_CFLAGS_APPEND([-O2])
+      JE_CXXFLAGS_APPEND([-O2])
    else
      JE_CFLAGS_APPEND([-O])
+      JE_CXXFLAGS_APPEND([-O])
    fi
  fi
 fi
@ -1943,8 +2010,12 @@ AC_MSG_RESULT([CC                 : ${CC}])
 AC_MSG_RESULT([CFLAGS             : ${CFLAGS}])
 AC_MSG_RESULT([EXTRA_CFLAGS       : ${EXTRA_CFLAGS}])
 AC_MSG_RESULT([CPPFLAGS           : ${CPPFLAGS}])
+AC_MSG_RESULT([CXX                : ${CXX}])
+AC_MSG_RESULT([CXXFLAGS           : ${CXXFLAGS}])
+AC_MSG_RESULT([EXTRA_CXXFLAGS     : ${EXTRA_CXXFLAGS}])
 AC_MSG_RESULT([LDFLAGS            : ${LDFLAGS}])
 AC_MSG_RESULT([EXTRA_LDFLAGS      : ${EXTRA_LDFLAGS}])
+AC_MSG_RESULT([DSO_LDFLAGS        : ${DSO_LDFLAGS}])
 AC_MSG_RESULT([LIBS               : ${LIBS}])
 AC_MSG_RESULT([RPATH_EXTRA        : ${RPATH_EXTRA}])
 AC_MSG_RESULT([])
@ -1985,4 +2056,5 @@ AC_MSG_RESULT([munmap             : ${enable_munmap}])
 AC_MSG_RESULT([lazy_lock          : ${enable_lazy_lock}])
 AC_MSG_RESULT([tls                : ${enable_tls}])
 AC_MSG_RESULT([cache-oblivious    : ${enable_cache_oblivious}])
+AC_MSG_RESULT([cxx                : ${enable_cxx}])
 AC_MSG_RESULT([===============================================================================])
--- a/include/jemalloc/internal/jemalloc_internal.h.in
+++ b/include/jemalloc/internal/jemalloc_internal.h.in
@ -1,6 +1,10 @@
 #ifndef JEMALLOC_INTERNAL_H
 #define	JEMALLOC_INTERNAL_H

+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "jemalloc_internal_defs.h"
 #include "jemalloc/internal/jemalloc_internal_decls.h"

@ -135,7 +139,7 @@ static const bool config_cache_oblivious =
 #endif
    ;

-#ifdef JEMALLOC_C11ATOMICS
+#if defined(JEMALLOC_C11ATOMICS) && !defined(__cplusplus)
 #include <stdatomic.h>
 #endif

@ -888,7 +892,7 @@ arena_get(tsdn_t *tsdn, unsigned ind, bool init_if_missing)

 	ret = arenas[ind];
 	if (unlikely(ret == NULL)) {
-		ret = atomic_read_p((void *)&arenas[ind]);
+		ret = (arena_t *)atomic_read_p((void **)&arenas[ind]);
 		if (init_if_missing && unlikely(ret == NULL))
 			ret = arena_init(tsdn, ind);
 	}
@ -1194,4 +1198,9 @@ ixalloc(tsdn_t *tsdn, extent_t *extent, void *ptr, size_t oldsize, size_t size,

 #undef JEMALLOC_H_INLINES
 /******************************************************************************/
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* JEMALLOC_INTERNAL_H */
--- a/include/jemalloc/internal/jemalloc_internal_macros.h
+++ b/include/jemalloc/internal/jemalloc_internal_macros.h
@ -52,6 +52,6 @@
 #  define	__DECONST(type, var)	((type)(uintptr_t)(const void *)(var))
 #endif

-#ifndef JEMALLOC_HAS_RESTRICT
+#if !defined(JEMALLOC_HAS_RESTRICT) || defined(__cplusplus)
 #  define restrict
 #endif
--- a/include/jemalloc/internal/rtree.h
+++ b/include/jemalloc/internal/rtree.h
@ -260,7 +260,7 @@ rtree_child_tryread(rtree_elm_t *elm, bool dependent)
 	/* Double-checked read (first read may be stale). */
 	child = elm->child;
 	if (!dependent && !rtree_node_valid(child))
-		child = atomic_read_p(&elm->pun);
+		child = (rtree_elm_t *)atomic_read_p(&elm->pun);
 	assert(!dependent || child != NULL);
 	return (child);
 }
@ -320,8 +320,10 @@ rtree_subtree_tryread(rtree_t *rtree, unsigned level, bool dependent)

 	/* Double-checked read (first read may be stale). */
 	subtree = rtree->levels[level].subtree;
-	if (!dependent && unlikely(!rtree_node_valid(subtree)))
-		subtree = atomic_read_p(&rtree->levels[level].subtree_pun);
+	if (!dependent && unlikely(!rtree_node_valid(subtree))) {
+		subtree = (rtree_elm_t *)atomic_read_p(
+		    &rtree->levels[level].subtree_pun);
+	}
 	assert(!dependent || subtree != NULL);
 	return (subtree);
 }
--- a/m4/ax_cxx_compile_stdcxx.m4
+++ b/m4/ax_cxx_compile_stdcxx.m4
@ -0,0 +1,562 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
+#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 4
+
+dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
+dnl  (serial version number 13).
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
+  m4_if([$1], [11], [],
+        [$1], [14], [],
+        [$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
+        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$2], [], [],
+        [$2], [ext], [],
+        [$2], [noext], [],
+        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
+        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
+  AC_LANG_PUSH([C++])dnl
+  ac_success=no
+  AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
+  ax_cv_cxx_compile_cxx$1,
+  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+    [ax_cv_cxx_compile_cxx$1=yes],
+    [ax_cv_cxx_compile_cxx$1=no])])
+  if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
+    ac_success=yes
+  fi
+
+  m4_if([$2], [noext], [], [dnl
+  if test x$ac_success = xno; then
+    for switch in -std=gnu++$1 -std=gnu++0x; do
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+
+  m4_if([$2], [ext], [], [dnl
+  if test x$ac_success = xno; then
+    dnl HP's aCC needs +std=c++11 according to:
+    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
+    dnl Cray's crayCC needs "-h std=c++11"
+    for switch in -std=c++$1 -std=c++0x +std=c++$1 "-h std=c++$1"; do
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+  AC_LANG_POP([C++])
+  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
+    if test x$ac_success = xno; then
+      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX$1=0
+    AC_MSG_NOTICE([No compiler with C++$1 support was found])
+  else
+    HAVE_CXX$1=1
+    AC_DEFINE(HAVE_CXX$1,1,
+              [define if the compiler supports basic C++$1 syntax])
+  fi
+  AC_SUBST(HAVE_CXX$1)
+])
+
+
+dnl  Test body for checking C++11 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+)
+
+
+dnl  Test body for checking C++14 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+)
+
+
+dnl  Tests for new features in C++11
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+]])
+
+
+dnl  Tests for new features in C++14
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_seperators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+]])
--- a/src/jemalloc_cpp.cpp
+++ b/src/jemalloc_cpp.cpp
@ -0,0 +1,140 @@
+#include <mutex>
+#include <new>
+
+#define	JEMALLOC_CPP_CPP_
+#include "jemalloc/internal/jemalloc_internal.h"
+
+// All operators in this file are exported.
+
+// Possibly alias hidden versions of malloc and sdallocx to avoid an extra plt
+// thunk?
+//
+// extern __typeof (sdallocx) sdallocx_int
+//  __attribute ((alias ("sdallocx"),
+//		visibility ("hidden")));
+//
+// ... but it needs to work with jemalloc namespaces.
+
+void	*operator new(std::size_t size);
+void	*operator new[](std::size_t size);
+void	*operator new(std::size_t size, const std::nothrow_t&) noexcept;
+void	*operator new[](std::size_t size, const std::nothrow_t&) noexcept;
+void	operator delete(void* ptr) noexcept;
+void	operator delete[](void* ptr) noexcept;
+void	operator delete(void* ptr, const std::nothrow_t&) noexcept;
+void	operator delete[](void* ptr, const std::nothrow_t&) noexcept;
+
+#if __cpp_sized_deallocation >= 201309
+/* C++14's sized-delete operators. */
+void	operator delete(void* ptr, std::size_t size) noexcept;
+void	operator delete[](void* ptr, std::size_t size) noexcept;
+#endif
+
+
+template <bool IsNoExcept>
+JEMALLOC_INLINE
+void *
+newImpl(std::size_t size) noexcept(IsNoExcept)
+{
+	void* ptr = je_malloc(size);
+	if (likely(ptr != nullptr))
+		return (ptr);
+
+	while (ptr == nullptr) {
+		std::new_handler handler;
+		// GCC-4.8 and clang 4.0 do not have std::get_new_handler.
+		{
+			static std::mutex mtx;
+			std::lock_guard<std::mutex> lock(mtx);
+
+			handler = std::set_new_handler(nullptr);
+			std::set_new_handler(handler);
+		}
+		if (handler == nullptr)
+			break;
+
+		try {
+			handler();
+		} catch (const std::bad_alloc&) {
+			break;
+		}
+
+		ptr = je_malloc(size);
+	}
+
+	if (ptr == nullptr && !IsNoExcept)
+		std::__throw_bad_alloc();
+	return (ptr);
+}
+
+void *
+operator new(std::size_t size)
+{
+
+	return (newImpl<false>(size));
+}
+
+void *
+operator new[](std::size_t size)
+{
+
+	return (newImpl<false>(size));
+}
+
+void *
+operator new(std::size_t size, const std::nothrow_t&) noexcept
+{
+
+	return (newImpl<true>(size));
+}
+
+void *
+operator new[](std::size_t size, const std::nothrow_t&) noexcept
+{
+
+  return (newImpl<true>(size));
+}
+
+void
+operator delete(void* ptr) noexcept
+{
+
+	je_free(ptr);
+}
+
+void
+operator delete[](void* ptr) noexcept
+{
+
+	je_free(ptr);
+}
+
+void
+operator delete(void* ptr, const std::nothrow_t&) noexcept
+{
+
+	je_free(ptr);
+}
+
+void operator delete[](void* ptr, const std::nothrow_t&) noexcept
+{
+
+	je_free(ptr);
+}
+
+#if __cpp_sized_deallocation >= 201309
+
+void
+operator delete(void* ptr, std::size_t size) noexcept
+{
+
+	je_sdallocx(ptr, size, /*flags=*/0);
+}
+
+void operator delete[](void* ptr, std::size_t size) noexcept
+{
+
+	je_sdallocx(ptr, size, /*flags=*/0);
+}
+
+#endif  // __cpp_sized_deallocation
--- a/test/include/test/jemalloc_test.h.in
+++ b/test/include/test/jemalloc_test.h.in
@ -1,3 +1,7 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <limits.h>
 #ifndef SIZE_T_MAX
 #  define SIZE_T_MAX	SIZE_MAX
@ -47,7 +51,8 @@
 * expose the minimum necessary internal utility code (to avoid re-implementing
 * essentially identical code within the test infrastructure).
 */
-#elif defined(JEMALLOC_INTEGRATION_TEST)
+#elif defined(JEMALLOC_INTEGRATION_TEST) || \
+    defined(JEMALLOC_INTEGRATION_CPP_TEST)
 #  define JEMALLOC_MANGLE
 #  include "jemalloc/jemalloc@install_suffix@.h"
 #  include "jemalloc/internal/jemalloc_internal_defs.h"
@ -161,3 +166,7 @@ static const bool config_debug =
 	if (!(e))							\
 		not_implemented();					\
 } while (0)
+
+#ifdef __cplusplus
+}
+#endif
--- a/test/integration/cpp/basic.cpp
+++ b/test/integration/cpp/basic.cpp
@ -0,0 +1,18 @@
+#include <memory>
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_basic)
+{
+	auto foo = new long(4);
+	assert_ptr_not_null(foo, "Unexpected new[] failure");
+	delete foo;
+}
+TEST_END
+
+int
+main()
+{
+
+	return (test(
+	    test_basic));
+}