benchtests/Makefile

   1 # Copyright (C) 2013-2014 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   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.
   8
   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.
  13
  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/>.
  17
  18
  19 # Makefile for benchmark tests.  The only useful target here is `bench`.
  20 # Add benchmark functions in alphabetical order.
  21
  22 subdir := benchtests
  23
  24 include ../Makeconfig
  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
  27
  28 bench-pthread := pthread_once
  29
  30 bench := $(bench-math) $(bench-pthread)
  31
  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)
  39
  40 stdlib-bench := strtod
  41
  42 benchset := $(string-bench-all) $(stdlib-bench)
  43
  44 CFLAGS-bench-ffs.c += -fno-builtin
  45 CFLAGS-bench-ffsll.c += -fno-builtin
  46
  47 $(addprefix $(objpfx)bench-,$(bench-math)): $(common-objpfx)math/libm.so
  48 $(addprefix $(objpfx)bench-,$(bench-pthread)): \
  49         $(common-objpfx)nptl/libpthread.so
  50
  51 \f
  52
  53 # Rules to build and execute the benchmarks.  Do not put any benchmark
  54 # parameters beyond this point.
  55
  56 # We don't want the benchmark programs to run in parallel since that could
  57 # affect their performance.
  58 .NOTPARALLEL:
  59
  60 include ../Rules
  61
  62 binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
  63 binaries-benchset := $(addprefix $(objpfx)bench-,$(benchset))
  64
  65 # The default duration: 10 seconds.
  66 ifndef BENCH_DURATION
  67 BENCH_DURATION := 10
  68 endif
  69
  70 CPPFLAGS-nonlib += -DDURATION=$(BENCH_DURATION)
  71
  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
  76 endif
  77
  78 DETAILED_OPT :=
  79
  80 ifdef DETAILED
  81 DETAILED_OPT := -d
  82 endif
  83
  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)
  87 lib := nonlib
  88 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
  89
  90 extra-objs += json-lib.o
  91
  92 bench-deps := bench-skeleton.c bench-timing.h Makefile
  93
  94 run-bench = $(test-wrapper-env) \
  95             GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
  96             $($*-ENV) $(rtld-prefix) $${run}
  97
  98 timing-type := $(objpfx)bench-timing-type
  99
 100 bench-clean:
 101         rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
 102         rm -f $(binaries-benchset) $(addsuffix .o,$(binaries-benchset))
 103         rm -f $(timing-type) $(addsuffix .o,$(timing-type))
 104
 105 bench: $(timing-type) bench-set bench-func
 106
 107 bench-set: $(binaries-benchset)
 108         for run in $^; do \
 109           echo "Running $${run}"; \
 110           $(run-bench) > $${run}.out; \
 111         done
 112
 113 # Build and execute the benchmark functions.  This target generates JSON
 114 # formatted bench.out.  Each of the programs produce independent JSON output,
 115 # so one could even execute them individually and process it using any JSON
 116 # capable language or tool.
 117 bench-func: $(binaries-bench)
 118         { timing_type=$$($(timing-type)); \
 119         echo "{\"timing_type\": \"$${timing_type}\","; \
 120         echo " \"functions\": {"; \
 121         for run in $^; do \
 122           if ! [ "x$${run}" = "x$<" ]; then \
 123             echo ","; \
 124           fi; \
 125           echo "Running $${run}" >&2; \
 126           $(run-bench) $(DETAILED_OPT); \
 127         done; \
 128         echo; \
 129         echo " }"; \
 130         echo "}"; } > $(objpfx)bench.out-tmp; \
 131         if [ -f $(objpfx)bench.out ]; then \
 132           mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
 133         fi; \
 134         mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
 135
 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)
 139         $(+link)
 140
 141 $(objpfx)bench-%.c: %-inputs $(bench-deps)
 142         { if [ -n "$($*-INCLUDE)" ]; then \
 143           cat $($*-INCLUDE); \
 144         fi; \
 145         $(.)scripts/bench.py $(patsubst %-inputs,%,$<); } > $@-tmp
 146         mv -f $@-tmp $@