1 # Copyright (C) 2013-2014 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with the GNU C Library; if not, see
16 # <http://www.gnu.org/licenses/>.
19 # Makefile for benchmark tests. The only useful target here is `bench`.
20 # Add benchmark functions in alphabetical order.
25 bench-math
:= acos acosh asin asinh atan atanh cos cosh exp exp2 ffs ffsll \
26 log log2 modf pow rint sin sincos sinh sqrt tan tanh
28 bench-pthread
:= pthread_once
30 bench
:= $(bench-math
) $(bench-pthread
)
32 # String function benchmarks.
33 string-bench
:= bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
34 mempcpy memset rawmemchr stpcpy stpncpy strcasecmp strcasestr \
35 strcat strchr strchrnul strcmp strcpy strcspn strlen \
36 strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
37 strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok
38 string-bench-all
:= $(string-bench
)
40 stdlib-bench
:= strtod
42 benchset
:= $(string-bench-all
) $(stdlib-bench
)
44 CFLAGS-bench-ffs.c
+= -fno-builtin
45 CFLAGS-bench-ffsll.c
+= -fno-builtin
47 $(addprefix $(objpfx
)bench-
,$(bench-math
)): $(common-objpfx
)math
/libm.so
48 $(addprefix $(objpfx
)bench-
,$(bench-pthread
)): \
49 $(common-objpfx
)nptl
/libpthread.so
53 # Rules to build and execute the benchmarks. Do not put any benchmark
54 # parameters beyond this point.
56 # We don't want the benchmark programs to run in parallel since that could
57 # affect their performance.
62 binaries-bench
:= $(addprefix $(objpfx
)bench-
,$(bench
))
63 binaries-benchset
:= $(addprefix $(objpfx
)bench-
,$(benchset
))
65 # The default duration: 10 seconds.
70 CPPFLAGS-nonlib
+= -DDURATION
=$(BENCH_DURATION
)
72 # Use clock_gettime to measure performance of functions. The default is to use
73 # HP_TIMING if it is available.
74 ifdef USE_CLOCK_GETTIME
75 CPPFLAGS-nonlib
+= -DUSE_CLOCK_GETTIME
84 # This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
85 # for all these modules.
86 cpp-srcs-left
:= $(binaries-benchset
:=.c
) $(binaries-bench
:=.c
)
88 include $(patsubst %,$(..
)cppflags-iterator.mk
,$(cpp-srcs-left
))
90 extra-objs
+= json-lib.o
92 bench-deps
:= bench-skeleton.c bench-timing.h Makefile
94 run-bench
= $(test-wrapper-env
) \
95 GCONV_PATH
=$(common-objpfx
)iconvdata LC_ALL
=C \
96 $($*-ENV
) $(rtld-prefix
) $${run}
98 timing-type
:= $(objpfx
)bench-timing-type
101 rm -f
$(binaries-bench
) $(addsuffix .o
,$(binaries-bench
))
102 rm -f
$(binaries-benchset
) $(addsuffix .o
,$(binaries-benchset
))
103 rm -f
$(timing-type
) $(addsuffix .o
,$(timing-type
))
105 bench
: $(timing-type
) bench-set bench-func
107 bench-set
: $(binaries-benchset
)
109 echo
"Running $${run}"; \
110 $(run-bench
) > $${run}.out
; \
113 # Build and execute the benchmark functions. This target generates JSON
114 # formatted bench.out. Each of the programs produce independent JSON output,
115 # so one could even execute them individually and process it using any JSON
116 # capable language or tool.
117 bench-func
: $(binaries-bench
)
118 { timing_type
=$$($(timing-type
)); \
119 echo
"{\"timing_type\": \"$${timing_type}\","; \
120 echo
" \"functions\": {"; \
122 if
! [ "x$${run}" = "x$<" ]; then \
125 echo
"Running $${run}" >&2; \
126 $(run-bench
) $(DETAILED_OPT
); \
130 echo
"}"; } > $(objpfx
)bench.out-tmp
; \
131 if
[ -f
$(objpfx
)bench.out
]; then \
132 mv
-f
$(objpfx
)bench.out
$(objpfx
)bench.out.old
; \
134 mv
-f
$(objpfx
)bench.out-tmp
$(objpfx
)bench.out
136 $(timing-type
) $(binaries-bench
) $(binaries-benchset
): %: %.o
$(objpfx
)json-lib.o \
137 $(sort $(filter $(common-objpfx
)lib
%,$(link-libc
))) \
138 $(addprefix $(csu-objpfx
),start.o
) $(+preinit
) $(+postinit
)
141 $(objpfx
)bench-
%.c
: %-inputs
$(bench-deps
)
142 { if
[ -n
"$($*-INCLUDE)" ]; then \
145 $(.
)scripts
/bench.py
$(patsubst %-inputs
,%,$<); } > $@
-tmp