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package bisect_ppx
This module provides type definitions, and functions used by the various parts of Bisect.
type point_definition = {offset : int;(*Point offset, relative to file beginning.
*)identifier : int;(*Point identifier, unique in file.
*)
}The type of point definitions, that is places of interest in the source code.
Utility functions
try_finally x f h implements the try/finally logic. f is the body of the try clause, while h is the finally handler. Errors raised by handler are silently ignored.
val try_in_channel : bool -> string -> (in_channel -> 'a) -> 'atry_in_channel bin filename f is equivalent to try_finally x f h where:
xis an input channel for filefilename(opened in binary mode iffbinistrue);hjust closes the input channel. Raises an exception if any error occurs.
val try_out_channel : bool -> string -> (out_channel -> 'a) -> 'atry_out_channel bin filename f is equivalent to try_finally x f h where:
xis an output channel for filefilename(opened in binary mode iffbinistrue);hjust closes the output channel. Raises an exception if any error occurs.
I/O functions
Exception to be raised when a read file does not conform to the Bisect format. The parameter is the name of the incriminated file and the reason of the error.
val write_runtime_data : out_channel -> unitwrite_runtime_data o writes the current runtime data to the output channel oc using the Bisect file format. The runtime data list encodes a map (through an association list) from files to arrays of integers (the value at index i being the number of times point i has been visited). The arrays are paired with point definition lists, giving the location of each point in the file.
Raises Sys_error if an i/o error occurs.
Same as write_runtime_data, but accumulates output in a string instead.
val write_points : point_definition list -> stringwrite_points pts converts the point definitions pts to a string. The string is a binary byte sequence; it is not meant to be legible.
read_runtime_data f reads the runtime data from file f.
Raises Sys_error if an i/o error occurs. May also raise Invalid_file, Unsupported_version, or Modified_file.
val read_points : string -> point_definition listread_points s reads point definitions from the string s.
Coverage statistics table used by the runtime.
val register_file :
string ->
point_count:int ->
point_definitions:string ->
[ `Staged of int -> unit ]register_file file ~point_count ~point_definitions indicates that the file file is part of the application that has been instrumented. point_definitions is a serialized Common.point_definition list giving the locations of all points in the file. The returned callback is used to increment visitation counts.
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