fix: commit lldbinit.py

Author: alehander92

src/db-backend/lldbinit.py

@@ -0,0 +1,144 @@
+# GENERATED BY `RR`: rr lldbinit
+#   supposedly we assume MIT License as RR
+# TODO: maybe autogenerate in replay
+
+# This is a Python script. Save it to a file and run it from LLDB using
+#     script exec(open('<filename>').read())
+# or similar.
+
+def hex_unescape(string):
+    str_len = len(string)
+    if str_len % 2: # check for unexpected string length
+        return ""
+    result = bytearray()
+    try:
+        pos = 0
+        while pos < str_len:
+            hex_char = string[pos:pos+2]
+            result.append(int(hex_char, 16))
+            pos += 2
+    except: # check for unexpected string value
+        return ""
+    return result.decode('utf-8')
+
+def hex_escape(string):
+    result = ""
+    for curr_char in string.encode('utf-8'):
+        if isinstance(curr_char, str):
+            curr_char = ord(curr_char)
+        result += format(curr_char, '02x')
+    return result
+
+
+import lldb
+import re
+import shlex
+
+def run_command_and_get_output(debugger, command):
+    result = lldb.SBCommandReturnObject()
+    debugger.GetCommandInterpreter().HandleCommand(command, result)
+    assert result.Succeeded()
+    return result.GetOutput()
+
+def command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args):
+    interpreter = debugger.GetCommandInterpreter()
+    args = shlex.split(command)
+    # Ensure lldb tells rr its current thread
+    curr_thread = exe_ctx.thread
+    cmd_prefix = ("process plugin packet send qRRCmd:%s:%d"%
+        (cmd_name, -1 if curr_thread is None else curr_thread.GetThreadID()))
+    arg_strs = []
+    for auto_arg in auto_args:
+        arg_strs.append(":" + hex_escape(run_command_and_get_output(debugger, auto_arg)))
+    for arg in args:
+        arg_strs.append(":" + hex_escape(arg))
+    rv = run_command_and_get_output(debugger, cmd_prefix + ''.join(arg_strs));
+    rv_match = re.search('response: (.*)$', rv, re.MULTILINE);
+    if not rv_match:
+        result.SetError(None, "Invalid response: %s" % rv)
+        return
+    response = hex_unescape(rv_match.group(1))
+    result.Print(response.strip())
+
+def rr_command_elapsed_time(debugger, command, exe_ctx, result, internal_dict):
+    """Print elapsed time (in seconds) since the start of the trace, in the 'record' timeline."""
+    cmd_name = 'elapsed-time'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_elapsed_time elapsed-time')
+
+def rr_command_when(debugger, command, exe_ctx, result, internal_dict):
+    """Print the number of the last completely replayed rr event."""
+    cmd_name = 'when'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_when when')
+
+def rr_command_when_ticks(debugger, command, exe_ctx, result, internal_dict):
+    """Print the current rr tick count for the current thread."""
+    cmd_name = 'when-ticks'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_when_ticks when-ticks')
+
+def rr_command_when_tid(debugger, command, exe_ctx, result, internal_dict):
+    """Print the real tid for the current thread."""
+    cmd_name = 'when-tid'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_when_tid when-tid')
+
+def rr_command_seek_ticks(debugger, command, exe_ctx, result, internal_dict):
+    """Print the current rr tick count for the current thread."""
+    cmd_name = 'seek-ticks'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_seek_ticks seek-ticks')
+
+def rr_command_reverse_finish(debugger, command, exe_ctx, result, internal_dict):
+    """Print the current rr tick count for the current thread."""
+    cmd_name = 'reverse-finish'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_reverse_finish reverse-finish')
+
+def rr_command_rr_history_push(debugger, command, exe_ctx, result, internal_dict):
+    """Push an entry into the rr history."""
+    cmd_name = 'rr-history-push'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_rr_history_push rr-history-push')
+
+def rr_command_back(debugger, command, exe_ctx, result, internal_dict):
+    """Go back one entry in the rr history."""
+    cmd_name = 'back'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_back back')
+
+def rr_command_forward(debugger, command, exe_ctx, result, internal_dict):
+    """Go forward one entry in the rr history."""
+    cmd_name = 'forward'
+    auto_args = []
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_forward forward')
+
+def rr_command_checkpoint(debugger, command, exe_ctx, result, internal_dict):
+    """create a checkpoint representing a point in the execution
+use the 'restart' command to return to the checkpoint"""
+    cmd_name = 'checkpoint'
+    auto_args = ['rr-where']
+    command_impl(debugger, command, exe_ctx, result, cmd_name, auto_args)
+
+lldb.debugger.HandleCommand('command script add -f rr_command_checkpoint checkpoint')
+
+lldb.debugger.HandleCommand('set set prompt "(rr) "')