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)): $(libm)
  48 $(addprefix $(objpfx)bench-,$(bench-pthread)): $(shared-thread-library)
  49
  50 \f
  51
  52 # Rules to build and execute the benchmarks.  Do not put any benchmark
  53 # parameters beyond this point.
  54
  55 # We don't want the benchmark programs to run in parallel since that could
  56 # affect their performance.
  57 .NOTPARALLEL:
  58
  59 include ../Rules
  60
  61 binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
  62 binaries-benchset := $(addprefix $(objpfx)bench-,$(benchset))
  63
  64 # The default duration: 10 seconds.
  65 ifndef BENCH_DURATION
  66 BENCH_DURATION := 10
  67 endif
  68
  69 CPPFLAGS-nonlib += -DDURATION=$(BENCH_DURATION)
  70
  71 # Use clock_gettime to measure performance of functions.  The default is to use
  72 # HP_TIMING if it is available.
  73 ifdef USE_CLOCK_GETTIME
  74 CPPFLAGS-nonlib += -DUSE_CLOCK_GETTIME
  75 endif
  76
  77 DETAILED_OPT :=
  78
  79 ifdef DETAILED
  80 DETAILED_OPT := -d
  81 endif
  82
  83 # This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
  84 # for all these modules.
  85 cpp-srcs-left := $(binaries-benchset:=.c) $(binaries-bench:=.c)
  86 lib := nonlib
  87 include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
  88
  89 extra-objs += json-lib.o
  90
  91 bench-deps := bench-skeleton.c bench-timing.h Makefile
  92
  93 run-bench = $(test-wrapper-env) \
  94             $(run-program-env) \
  95             $($*-ENV) $(rtld-prefix) $${run}
  96
  97 timing-type := $(objpfx)bench-timing-type
  98
  99 bench-clean:
 100         rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
 101         rm -f $(binaries-benchset) $(addsuffix .o,$(binaries-benchset))
 102         rm -f $(timing-type) $(addsuffix .o,$(timing-type))
 103
 104 bench: $(timing-type) bench-set bench-func
 105
 106 bench-set: $(binaries-benchset)
 107         for run in $^; do \
 108           echo "Running $${run}"; \
 109           $(run-bench) > $${run}.out; \
 110         done
 111
 112 # Build and execute the benchmark functions.  This target generates JSON
 113 # formatted bench.out.  Each of the programs produce independent JSON output,
 114 # so one could even execute them individually and process it using any JSON
 115 # capable language or tool.
 116 bench-func: $(binaries-bench)
 117         { timing_type=$$($(timing-type)); \
 118         echo "{\"timing_type\": \"$${timing_type}\","; \
 119         echo " \"functions\": {"; \
 120         for run in $^; do \
 121           if ! [ "x$${run}" = "x$<" ]; then \
 122             echo ","; \
 123           fi; \
 124           echo "Running $${run}" >&2; \
 125           $(run-bench) $(DETAILED_OPT); \
 126         done; \
 127         echo; \
 128         echo " }"; \
 129         echo "}"; } > $(objpfx)bench.out-tmp; \
 130         if [ -f $(objpfx)bench.out ]; then \
 131           mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
 132         fi; \
 133         mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
 134         scripts/validate_benchout.py $(objpfx)bench.out \
 135                 scripts/benchout.schema.json
 136
 137 $(timing-type) $(binaries-bench) $(binaries-benchset): %: %.o $(objpfx)json-lib.o \
 138   $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
 139   $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
 140         $(+link)
 141
 142 $(objpfx)bench-%.c: %-inputs $(bench-deps)
 143         { if [ -n "$($*-INCLUDE)" ]; then \
 144           cat $($*-INCLUDE); \
 145         fi; \
 146         scripts/bench.py $(patsubst %-inputs,%,$<); } > $@-tmp
 147         mv -f $@-tmp $@