23
23
'this': 'bounce memchr memcpy memset strchr strcpy strlen',
24
'bionic': 'memcmp memcpy memset strcmp strcpy strlen',
24
'bionic-a9': 'memcmp memcpy memset strcmp strcpy strlen',
25
'bionic-a15': 'memcmp memcpy memset strcmp strcpy strlen',
26
27
'csl': 'memcpy memset',
27
28
'glibc': 'memcpy memset strlen',
32
33
'plain': 'memset memcpy strcmp strcpy',
35
def run(cache, variant, function, bytes, loops, alignment=8, quiet=False):
36
BOUNCE_ALIGNMENTS = ['1']
37
SINGLE_BUFFER_ALIGNMENTS = ['1', '2', '4', '8', '16', '32']
38
DUAL_BUFFER_ALIGNMENTS = ['1:32', '2:32', '4:32', '8:32', '16:32', '32:32']
41
'bounce': BOUNCE_ALIGNMENTS,
42
'memchr': SINGLE_BUFFER_ALIGNMENTS,
43
'memset': SINGLE_BUFFER_ALIGNMENTS,
44
'strchr': SINGLE_BUFFER_ALIGNMENTS,
45
'strlen': SINGLE_BUFFER_ALIGNMENTS,
46
'memcmp': DUAL_BUFFER_ALIGNMENTS,
47
'memcpy': DUAL_BUFFER_ALIGNMENTS,
48
'strcmp': DUAL_BUFFER_ALIGNMENTS,
49
'strcpy': DUAL_BUFFER_ALIGNMENTS,
52
def run(cache, variant, function, bytes, loops, alignment, quiet=False):
36
53
"""Perform a single run, exercising the cache as appropriate."""
37
54
key = ':'.join('%s' % x for x in (variant, function, bytes, loops, alignment))
61
def run_many(cache, variants, bytes, alignments):
78
def run_many(cache, variants, bytes, all_functions):
62
79
# We want the data to come out in a useful order. So fix an
63
80
# alignment and function, and do all sizes for a variant first
64
81
bytes = sorted(bytes)
65
mid = bytes[len(bytes)/2]
67
# Use the ordering in 'this' as the default
68
all_functions = HAS['this'].split()
70
# Find all other functions
71
for functions in HAS.values():
72
for function in functions.split():
73
if function not in all_functions:
74
all_functions.append(function)
76
for alignment in alignments:
77
for function in all_functions:
82
mid = bytes[int(len(bytes)/1.5)]
85
# Use the ordering in 'this' as the default
86
all_functions = HAS['this'].split()
88
# Find all other functions
89
for functions in HAS.values():
90
for function in functions.split():
91
if function not in all_functions:
92
all_functions.append(function)
94
for function in all_functions:
95
for alignment in ALIGNMENTS[function]:
78
96
for variant in variants:
79
97
if function not in HAS[variant].split():
119
138
steps = int(round(math.log(top) / math.log(step)))
120
139
bytes.extend([int(step**x) for x in range(0, steps+1)])
122
alignments = [8, 16, 4, 1, 2, 32]
124
run_many(cache, variants, bytes, alignments)
141
run_many(cache, variants, bytes, functions)
127
144
cachename = 'cache.txt'