collect logs

src/Makefile.am

@@ -25,7 +25,8 @@ OPT_FLAGS = -O3
 STRIP_FLAGS = -Os -s
 
 if DEBUG_SYMBOLS
-DEBUG_OPTS = -g
+DEBUG_OPTS = -g -DDEBUG
+austin_LDADD = -lm
 undefine STRIP_FLAGS
 endif
 
@@ -62,5 +63,5 @@ bin_PROGRAMS += austinp
 
 austinp_SOURCES = $(austin_SOURCES)
 austinp_CFLAGS = $(austin_CFLAGS) @AUSTINP_CFLAGS@
-austinp_LDADD = @AUSTINP_LDADD@
+austinp_LDADD = $(austin_LDADD) @AUSTINP_LDADD@
 endif

test/utils.py

@@ -31,14 +31,16 @@
 from pathlib import Path
 from shutil import rmtree
 from subprocess import PIPE
+from subprocess import CalledProcessError
 from subprocess import CompletedProcess
 from subprocess import Popen
+from subprocess import TimeoutExpired
 from subprocess import check_output
-from subprocess import run
 from test import PYTHON_VERSIONS
 from time import sleep
 from types import ModuleType
 from typing import Iterator
+from typing import List
 from typing import TypeVar
 
 
@@ -131,9 +133,60 @@ def bt(binary: Path) -> str:
     return "No core dump available."
 
 
+def collect_logs(variant: str, pid: int) -> List[str]:
+    match platform.system():
+        case "Linux":
+            with Path("/var/log/syslog").open() as logfile:
+                needle = f"{variant}[{pid}]"
+                return [_.strip() for _ in logfile.readlines() if needle in _]
+        case _:
+            return []
+
+
 EXEEXT = ".exe" if platform.system() == "Windows" else ""
 
 
+# Taken from the subprocess module
+def run(
+    *popenargs, input=None, capture_output=False, timeout=None, check=False, **kwargs
+):
+    if input is not None:
+        if kwargs.get("stdin") is not None:
+            raise ValueError("stdin and input arguments may not both be used.")
+        kwargs["stdin"] = PIPE
+
+    if capture_output:
+        if kwargs.get("stdout") is not None or kwargs.get("stderr") is not None:
+            raise ValueError(
+                "stdout and stderr arguments may not be used " "with capture_output."
+            )
+        kwargs["stdout"] = PIPE
+        kwargs["stderr"] = PIPE
+
+    with Popen(*popenargs, **kwargs) as process:
+        try:
+            stdout, stderr = process.communicate(input, timeout=timeout)
+        except TimeoutExpired as exc:
+            process.kill()
+            if platform.system() == "Windows":
+                exc.stdout, exc.stderr = process.communicate()
+            else:
+                process.wait()
+            raise
+        except:  # noqa
+            process.kill()
+            raise
+        retcode = process.poll()
+        if check and retcode:
+            raise CalledProcessError(
+                retcode, process.args, output=stdout, stderr=stderr
+            )
+    result = CompletedProcess(process.args, retcode, stdout, stderr)
+    result.pid = process.pid
+
+    return result
+
+
 class Variant(str):
     ALL: list["Variant"] = []
 
@@ -144,6 +197,7 @@ def __init__(self, name: str) -> None:
         if not path.is_file():
             path = Path(name).with_suffix(EXEEXT)
 
+        self.name = name
         self.path = path
 
         self.ALL.append(self)
@@ -174,6 +228,12 @@ def __call__(
             result.stdout = result.stdout.decode(errors="ignore")
         result.stderr = result.stderr.decode()
 
+        if result.returncode and (logs := collect_logs(self.name, result.pid)):
+            print(f"logs for {result.pid}".center(80, "="))
+            for log in logs:
+                print(log)
+            print(f"end of logs for {result.pid}".center(80, "="))
+
         return result