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# Copyright (C) 1991-2018 Free Software Foundation, Inc.
# This file is part of the GNU C Library.

# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# The GNU C 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
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.

#
#	Makefile for malloc routines
#
subdir	:= malloc

include ../Makeconfig

dist-headers := malloc.h
headers := $(dist-headers) obstack.h mcheck.h
tests := mallocbug tst-malloc tst-valloc tst-calloc tst-obstack \
	 tst-mcheck tst-mallocfork tst-trim1 \
	 tst-malloc-usable tst-realloc tst-reallocarray tst-posix_memalign \
	 tst-pvalloc tst-memalign tst-mallopt \
	 tst-malloc-backtrace tst-malloc-thread-exit \
	 tst-malloc-thread-fail tst-malloc-fork-deadlock \
	 tst-mallocfork2 \
	 tst-interpose-nothread \
	 tst-interpose-thread \
	 tst-alloc_buffer \
	 tst-malloc-tcache-leak \
	 tst-malloc_info \
	 tst-malloc-too-large \
	 tst-malloc-stats-cancellation \
	 tst-tcfree1 tst-tcfree2 tst-tcfree3 \

tests-static := \
	 tst-interpose-static-nothread \
	 tst-interpose-static-thread \
	 tst-malloc-usable-static \

tests-internal := tst-mallocstate tst-scratch_buffer

# The dynarray framework is only available inside glibc.
tests-internal += \
	 tst-dynarray \
	 tst-dynarray-fail \
	 tst-dynarray-at-fail \

ifneq (no,$(have-tunables))
tests += tst-malloc-usable-tunables
tests-static += tst-malloc-usable-static-tunables
endif

tests += $(tests-static)
test-srcs = tst-mtrace

routines = malloc morecore mcheck mtrace obstack reallocarray \
  scratch_buffer_grow scratch_buffer_grow_preserve \
  scratch_buffer_set_array_size \
  dynarray_at_failure \
  dynarray_emplace_enlarge \
  dynarray_finalize \
  dynarray_resize \
  dynarray_resize_clear \
  alloc_buffer_alloc_array \
  alloc_buffer_allocate \
  alloc_buffer_copy_bytes  \
  alloc_buffer_copy_string \
  alloc_buffer_create_failure \

install-lib := libmcheck.a
non-lib.a := libmcheck.a

# Additional library.
extra-libs = libmemusage
extra-libs-others = $(extra-libs)

# Helper objects for some tests.
extra-tests-objs += \
  tst-interpose-aux-nothread.o \
  tst-interpose-aux-thread.o \

test-extras = \
  tst-interpose-aux-nothread \
  tst-interpose-aux-thread \

libmemusage-routines = memusage
libmemusage-inhibit-o = $(filter-out .os,$(object-suffixes))

$(objpfx)tst-malloc-backtrace: $(shared-thread-library)
$(objpfx)tst-malloc-thread-exit: $(shared-thread-library)
$(objpfx)tst-malloc-thread-fail: $(shared-thread-library)
$(objpfx)tst-malloc-fork-deadlock: $(shared-thread-library)
$(objpfx)tst-malloc-stats-cancellation: $(shared-thread-library)

# Export the __malloc_initialize_hook variable to libc.so.
LDFLAGS-tst-mallocstate = -rdynamic

# These should be removed by `make clean'.
extra-objs = mcheck-init.o libmcheck.a
others-extras = mcheck-init.o

# Include the cleanup handler.
aux := set-freeres thread-freeres

# The Perl script to analyze the output of the mtrace functions.
ifneq ($(PERL),no)
install-bin-script = mtrace
generated += mtrace

# The Perl script will print addresses and to do this nicely we must know
# whether we are on a 32 or 64 bit machine.
ifneq ($(findstring wordsize-32,$(config-sysdirs)),)
address-width=10
else
address-width=18
endif
endif

# Unless we get a test for the availability of libgd which also works
# for cross-compiling we disable the memusagestat generation in this
# situation.
ifneq ($(cross-compiling),yes)
# If the gd library is available we build the `memusagestat' program.
ifneq ($(LIBGD),no)
others: $(objpfx)memusage
install-bin = memusagestat
install-bin-script += memusage
generated += memusagestat memusage
extra-objs += memusagestat.o

# The configure.ac check for libgd and its headers did not use $SYSINCLUDES.
# The directory specified by --with-headers usually contains only the basic
# kernel interface headers, not something like libgd.  So the simplest thing
# is to presume that the standard system headers will be ok for this file.
$(objpfx)memusagestat.o: sysincludes = # nothing
endif
endif

# Another goal which can be used to override the configure decision.
.PHONY: do-memusagestat
do-memusagestat: $(objpfx)memusagestat

memusagestat-modules = memusagestat

cpp-srcs-left := $(memusagestat-modules)
lib := memusagestat
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))

$(objpfx)memusagestat: $(memusagestat-modules:%=$(objpfx)%.o)
	$(LINK.o) -o $@ $^ $(libgd-LDFLAGS) -lgd -lpng -lz -lm

ifeq ($(run-built-tests),yes)
ifeq (yes,$(build-shared))
ifneq ($(PERL),no)
tests-special += $(objpfx)tst-mtrace.out
tests-special += $(objpfx)tst-dynarray-mem.out
tests-special += $(objpfx)tst-dynarray-fail-mem.out
endif
endif
endif

include ../Rules

CFLAGS-mcheck-init.c += $(PIC-ccflag)
CFLAGS-obstack.c += $(uses-callbacks)

$(objpfx)libmcheck.a: $(objpfx)mcheck-init.o
	-rm -f $@
	$(patsubst %/,cd % &&,$(objpfx)) \
	$(LN_S) $(<F) $(@F)

lib: $(objpfx)libmcheck.a

ifeq ($(run-built-tests),yes)
ifeq (yes,$(build-shared))
ifneq ($(PERL),no)
$(objpfx)tst-mtrace.out: tst-mtrace.sh $(objpfx)tst-mtrace
	$(SHELL) $< $(common-objpfx) '$(test-program-prefix-before-env)' \
		 '$(run-program-env)' '$(test-program-prefix-after-env)' > $@; \
	$(evaluate-test)
endif
endif
endif

tst-mcheck-ENV = MALLOC_CHECK_=3
tst-malloc-usable-ENV = MALLOC_CHECK_=3
tst-malloc-usable-static-ENV = $(tst-malloc-usable-ENV)
tst-malloc-usable-tunables-ENV = GLIBC_TUNABLES=glibc.malloc.check=3
tst-malloc-usable-static-tunables-ENV = $(tst-malloc-usable-tunables-ENV)

ifeq ($(experimental-malloc),yes)
CPPFLAGS-malloc.c += -DUSE_TCACHE=1
else
CPPFLAGS-malloc.c += -DUSE_TCACHE=0
endif
# Uncomment this for test releases.  For public releases it is too expensive.
#CPPFLAGS-malloc.o += -DMALLOC_DEBUG=1

sLIBdir := $(shell echo $(slibdir) | sed 's,lib\(\|64\)$$,\\\\$$LIB,')

$(objpfx)mtrace: mtrace.pl
	rm -f $@.new
	sed -e 's|@PERL@|$(PERL)|' -e 's|@XXX@|$(address-width)|' \
	    -e 's|@VERSION@|$(version)|' \
	    -e 's|@PKGVERSION@|$(PKGVERSION)|' \
	    -e 's|@REPORT_BUGS_TO@|$(REPORT_BUGS_TO)|' $^ > $@.new \
	&& rm -f $@ && mv $@.new $@ && chmod +x $@

$(objpfx)memusage: memusage.sh
	rm -f $@.new
	sed -e 's|@BASH@|$(BASH)|' -e 's|@VERSION@|$(version)|' \
	    -e 's|@SLIBDIR@|$(sLIBdir)|' -e 's|@BINDIR@|$(bindir)|' \
	    -e 's|@PKGVERSION@|$(PKGVERSION)|' \
	    -e 's|@REPORT_BUGS_TO@|$(REPORT_BUGS_TO)|' $^ > $@.new \
	&& rm -f $@ && mv $@.new $@ && chmod +x $@


# The implementation uses `dlsym'
$(objpfx)libmemusage.so: $(libdl)

# Extra dependencies
$(foreach o,$(all-object-suffixes),$(objpfx)malloc$(o)): arena.c hooks.c

# Compile the tests with a flag which suppresses the mallopt call in
# the test skeleton.
$(tests:%=$(objpfx)%.o): CPPFLAGS += -DTEST_NO_MALLOPT

$(objpfx)tst-interpose-nothread: $(objpfx)tst-interpose-aux-nothread.o
$(objpfx)tst-interpose-thread: \
  $(objpfx)tst-interpose-aux-thread.o $(shared-thread-library)
$(objpfx)tst-interpose-static-nothread: $(objpfx)tst-interpose-aux-nothread.o
$(objpfx)tst-interpose-static-thread: \
  $(objpfx)tst-interpose-aux-thread.o $(static-thread-library)

tst-dynarray-ENV = MALLOC_TRACE=$(objpfx)tst-dynarray.mtrace
$(objpfx)tst-dynarray-mem.out: $(objpfx)tst-dynarray.out
	$(common-objpfx)malloc/mtrace $(objpfx)tst-dynarray.mtrace > $@; \
	$(evaluate-test)

tst-dynarray-fail-ENV = MALLOC_TRACE=$(objpfx)tst-dynarray-fail.mtrace
$(objpfx)tst-dynarray-fail-mem.out: $(objpfx)tst-dynarray-fail.out
	$(common-objpfx)malloc/mtrace $(objpfx)tst-dynarray-fail.mtrace > $@; \
	$(evaluate-test)

$(objpfx)tst-malloc-tcache-leak: $(shared-thread-library)
$(objpfx)tst-malloc_info: $(shared-thread-library)