fix: add mode to benchmarking, refactor slightly

.gitignore

@@ -13,3 +13,4 @@ build/*
 .pytype/*
 instruct/about.py
 python*/
+.coverage

instruct/__main__.py

@@ -1,39 +1,46 @@
+from __future__ import annotations
+
 from typing import Union
-from instruct import Base, clear
+from instruct import SimpleBase, clear
 import timeit
 
+try:
+    from typing import assert_never
+except ImportError:
+    from typing_extensions import assert_never
+
 clear
 
 test_statement = """
-t.name_or_id = 1
+t.name_or_id += 1
 """
 
 
-class TestH(Base, history=True):
+class TestH(SimpleBase, history=True):
     name_or_id: Union[int, str]
 
     def __init__(self, **kwargs):
         self.name_or_id = 1
         super().__init__(**kwargs)
 
 
-class Test(Base):
+class Test(SimpleBase):
     name_or_id: Union[int, str]
 
     def __init__(self, **kwargs):
         self.name_or_id = 1
         super().__init__(**kwargs)
 
 
-class TestOptimized(Base, fast=True):
+class TestOptimized(SimpleBase, fast=True):
     name_or_id: Union[int, str]
 
     def __init__(self, **kwargs):
         self.name_or_id = 1
         super().__init__(**kwargs)
 
 
-class ComplexTest(Base):
+class ComplexTest(SimpleBase):
     id: int
     name: str
     type: int
@@ -51,51 +58,72 @@ class Next(ComplexTest):
     next: int
 
 
-def main(count=1_000_000):
-    ttl = timeit.timeit(
-        't = Test(name_or_id="name")', setup="from __main__ import Test", number=count
-    )
+US_IN_S: int = 1_000_000
+
+
+def main(unit: Literal["ns", "us"] = "us", limit: int = 10_000):
+    if "us" == unit:
+        multiplier = 1
+        fmt = "{:.2f}"
+    elif "ns" == unit:
+        multiplier = 1000
+        fmt = "{:.0f}"
+    else:
+        assert_never(unit)
+    ttl = timeit.timeit('t = Test(name_or_id="name")', number=limit, globals={"Test": Test})
     print("Overhead of allocation")
-    per_round_ms = (ttl / count) * count
-    print("one field, safeties on: {:.2f} us".format(per_round_ms))
+    per_round_us = (ttl * US_IN_S) / limit
+    print("one field, safeties on: {} {}".format(fmt.format(per_round_us * multiplier), unit))
 
     ttl = timeit.timeit(
-        't = Test(name_or_id="name")',
-        setup="from __main__ import TestOptimized as Test",
-        number=count,
+        't = TestOptimized(name_or_id="name")',
+        number=limit,
+        globals={"TestOptimized": TestOptimized},
     )
-    per_round_ms = (ttl / count) * count
-    print("one field, safeties off: {:.2f} us".format(per_round_ms))
+    per_round_us = (ttl * US_IN_S) / limit
+    print("one field, safeties off: {} {}".format(fmt.format(per_round_us * multiplier), unit))
+
+    unit = "ns"
+    multiplier = 1_000
+    fmt = "{:.0f}"
 
     print("Overhead of setting a field")
-    ttl = timeit.timeit(test_statement, setup="from __main__ import Test;t = Test()")
-    per_round_ms = (ttl / count) * count
-    print("Test with safeties: {:.2f} us".format(per_round_ms))
+    ttl = timeit.timeit(test_statement, number=limit, globals={"t": Test()})
+    per_round_us = (ttl * US_IN_S) / limit
+    print("Test with safeties: {} {}".format(fmt.format(per_round_us * multiplier), unit))
 
     ttl = timeit.timeit(
         test_statement,
-        setup="from __main__ import TestOptimized as Test;t = Test()",
-        number=count,
+        number=limit,
+        globals={
+            "t": TestOptimized(),
+        },
     )
-    per_round_ms = (ttl / count) * count
-    print("Test without safeties: {:.2f} us".format(per_round_ms))
+    per_round_us = (ttl * US_IN_S) / limit
+    print("Test without safeties: {} {}".format(fmt.format(per_round_us * multiplier), unit))
 
     print("Overhead of clearing/setting")
     ttl = timeit.timeit(
         "clear(t);t.name_or_id = 1",
-        setup='from __main__ import Test, clear;t = Test(name_or_id="name")',
-        number=count,
+        number=limit,
+        globals={
+            "t": Test(name_or_id="name"),
+            "clear": clear,
+        },
     )
-    per_round_ms = (ttl / count) * count
-    print("Test with safeties: {:.2f} us".format(per_round_ms))
+    per_round_us = (ttl * US_IN_S) / limit
+    print("Test with safeties: {} {}".format(fmt.format(per_round_us * multiplier), unit))
 
     ttl = timeit.timeit(
         "clear(t);t.name_or_id = 1",
-        setup='from __main__ import TestOptimized as Test,clear;t = Test(name_or_id="name")',
-        number=count,
+        number=limit,
+        globals={
+            "t": TestOptimized(name_or_id="name"),
+            "clear": clear,
+        },
     )
-    per_round_ms = (ttl / count) * count
-    print("Test without safeties: {:.2f} us".format(per_round_ms))
+    per_round_us = (ttl * US_IN_S) / limit
+    print("Test without safeties: {} {}".format(fmt.format(per_round_us * multiplier), unit))
 
 
 if __name__ == "__main__":
@@ -113,7 +141,8 @@ def main(count=1_000_000):
     subparsers = parser.add_subparsers()
     benchmark = subparsers.add_parser("benchmark")
     benchmark.set_defaults(mode="benchmark")
-    benchmark.add_argument("count", default=1_000_000, type=int, nargs="?")
+    benchmark.add_argument("unit", choices=["us", "ns"], default="us", nargs="?")
+    benchmark.add_argument("limit", type=int, default=main.__defaults__[-1], nargs="?")
     if PyCallGraph is not None:
         callgraph = subparsers.add_parser("callgraph")
         callgraph.set_defaults(mode="callgraph")
@@ -123,7 +152,7 @@ def main(count=1_000_000):
     if not args.mode:
         raise SystemExit("Use benchmark or callgraph")
     if args.mode == "benchmark":
-        main(args.count)
+        main(args.unit, args.limit)
     if PyCallGraph and args.mode == "callgraph":
         names = [random.choice((("test",) * 10) + (-1, None)) for _ in range(1000)]
         ids = [random.randint(1, 232) for _ in range(1000)]

tasks.py

@@ -1015,6 +1015,7 @@ def benchmark(
     context: Context,
     type_: Union[Type[UnitValue], Type[str], Literal["UnitValue", "str"]] = "str",
     *,
+    mode: Literal["us", "ns"] = "us",
     count: Optional[int] = None,
 ) -> Union[UnitValue, Tuple[str, ...]]:
     if type_ == "UnitValue":
@@ -1023,7 +1024,7 @@ def benchmark(
         type_ = str
     assert type_ in (str, UnitValue)
     python_bin = _.python_path(str, silent=True)
-    fh = context.run(f"{python_bin} -m instruct benchmark {count or ''}", hide="stdout")
+    fh = context.run(f"{python_bin} -m instruct benchmark {mode} {count or ''}", hide="stdout")
     assert fh is not None
     tests = []
     section = None