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import py, os
import pytest
import time
from rpython.tool.udir import udir
from rpython.rlib import rvmprof
from rpython.translator.c.test.test_genc import compile
from rpython.translator.tool.cbuild import ExternalCompilationInfo
from rpython.rtyper.lltypesystem import rffi, lltype
@pytest.mark.usefixtures('init')
class RVMProfTest(object):
ENTRY_POINT_ARGS = ()
class MyCode(object):
def __init__(self, name='py:code:0:noname'):
self.name = name
def get_name(self):
return self.name
@pytest.fixture
def init(self):
self.register()
self.rpy_entry_point = compile(self.entry_point, self.ENTRY_POINT_ARGS)
def register(self):
rvmprof.register_code_object_class(self.MyCode,
self.MyCode.get_name)
class TestExecuteCode(RVMProfTest):
def entry_point(self):
res = self.main(self.MyCode(), 5)
assert res == 42
return 0
@rvmprof.vmprof_execute_code("xcode1", lambda self, code, num: code)
def main(self, code, num):
print num
return 42
def test(self):
assert self.entry_point() == 0
assert self.rpy_entry_point() == 0
class TestResultClass(RVMProfTest):
class A: pass
@rvmprof.vmprof_execute_code("xcode2", lambda self, num, code: code,
result_class=A)
def main(self, num, code):
print num
return self.A()
def entry_point(self):
a = self.main(7, self.MyCode())
assert isinstance(a, self.A)
return 0
def test(self):
assert self.entry_point() == 0
assert self.rpy_entry_point() == 0
class TestRegisterCode(RVMProfTest):
@rvmprof.vmprof_execute_code("xcode1", lambda self, code, num: code)
def main(self, code, num):
print num
return 42
def entry_point(self):
code = self.MyCode()
rvmprof.register_code(code, lambda code: 'some code')
res = self.main(code, 5)
assert res == 42
return 0
def test(self):
assert self.entry_point() == 0
assert self.rpy_entry_point() == 0
class RVMProfSamplingTest(RVMProfTest):
# the kernel will deliver SIGPROF at max 250 Hz. See also
# https://github.com/vmprof/vmprof-python/issues/163
SAMPLING_INTERVAL = 1/250.0
@pytest.fixture
def init(self, tmpdir):
self.tmpdir = tmpdir
self.tmpfile = tmpdir.join('profile.vmprof')
self.tmpfilename = str(self.tmpfile)
super(RVMProfSamplingTest, self).init()
ENTRY_POINT_ARGS = (int, float)
def entry_point(self, value, delta_t):
code = self.MyCode('py:code:52:test_enable')
rvmprof.register_code(code, self.MyCode.get_name)
fd = os.open(self.tmpfilename, os.O_WRONLY | os.O_CREAT, 0666)
rvmprof.enable(fd, self.SAMPLING_INTERVAL)
start = time.time()
res = 0
while time.time() < start+delta_t:
res = self.main(code, value)
rvmprof.disable()
os.close(fd)
return res
def approx_equal(self, a, b, tolerance=0.1):
max_diff = (a+b)/2.0 * tolerance
return abs(a-b) < max_diff
class TestEnable(RVMProfSamplingTest):
@rvmprof.vmprof_execute_code("xcode1", lambda self, code, count: code)
def main(self, code, count):
s = 0
for i in range(count):
s += (i << 1)
return s
def test(self):
from vmprof import read_profile
assert self.entry_point(10**4, 0.1) == 99990000
assert self.tmpfile.check()
self.tmpfile.remove()
#
assert self.rpy_entry_point(10**4, 0.5) == 99990000
assert self.tmpfile.check()
prof = read_profile(self.tmpfilename)
tree = prof.get_tree()
assert tree.name == 'py:code:52:test_enable'
assert self.approx_equal(tree.count, 0.5/self.SAMPLING_INTERVAL)
class TestNative(RVMProfSamplingTest):
@pytest.fixture
def init(self, tmpdir):
eci = ExternalCompilationInfo(compile_extra=['-g','-O0', '-Werror'],
post_include_bits = ['int native_func(int);'],
separate_module_sources=["""
RPY_EXTERN int native_func(int d) {
int j = 0;
if (d > 0) {
return native_func(d-1);
} else {
for (int i = 0; i < 42000; i++) {
j += 1;
}
}
return j;
}
"""])
self.native_func = rffi.llexternal("native_func", [rffi.INT], rffi.INT,
compilation_info=eci)
super(TestNative, self).init(tmpdir)
@rvmprof.vmprof_execute_code("xcode1", lambda self, code, count: code)
def main(self, code, count):
code = self.MyCode('py:main:3:main')
rvmprof.register_code(code, self.MyCode.get_name)
code = self.MyCode('py:code:7:native_func')
rvmprof.register_code(code, self.MyCode.get_name)
if count > 0:
return self.main(code, count-1)
else:
return self.native_func(100)
def test(self):
from vmprof import read_profile
# from vmprof.show import PrettyPrinter
assert self.rpy_entry_point(3, 0.5) == 42000
assert self.tmpfile.check()
prof = read_profile(self.tmpfilename)
tree = prof.get_tree()
# p = PrettyPrinter()
# p._print_tree(tree)
def walk(tree, symbols):
symbols.append(tree.name)
if len(tree.children) == 0:
return
for child in tree.children.values():
walk(child, symbols)
symbols = []
walk(tree, symbols)
not_found = ['py:code:7:native_func']
for sym in symbols:
for i,name in enumerate(not_found):
if sym.startswith(name):
del not_found[i]
break
assert not_found == []
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