1const std = @import("../std.zig");
 2const valgrind = std.valgrind;
 3
 4pub const ClientRequest = enum(usize) {
 5    DumpStats = valgrind.ToolBase("CT".*),
 6    ZeroStats,
 7    ToggleCollect,
 8    DumpStatsAt,
 9    StartInstrumentation,
10    StopInstrumentation,
11};
12
13fn doClientRequestExpr(default: usize, request: ClientRequest, a1: usize, a2: usize, a3: usize, a4: usize, a5: usize) usize {
14    return valgrind.doClientRequest(default, @as(usize, @intCast(@intFromEnum(request))), a1, a2, a3, a4, a5);
15}
16
17fn doClientRequestStmt(request: ClientRequest, a1: usize, a2: usize, a3: usize, a4: usize, a5: usize) void {
18    _ = doClientRequestExpr(0, request, a1, a2, a3, a4, a5);
19}
20
21/// Dump current state of cost centers, and zero them afterwards
22pub fn dumpStats() void {
23    doClientRequestStmt(.DumpStats, 0, 0, 0, 0, 0);
24}
25
26/// Dump current state of cost centers, and zero them afterwards.
27/// The argument is appended to a string stating the reason which triggered
28/// the dump. This string is written as a description field into the
29/// profile data dump.
30pub fn dumpStatsAt(pos_str: [*:0]const u8) void {
31    doClientRequestStmt(.DumpStatsAt, @intFromPtr(pos_str), 0, 0, 0, 0);
32}
33
34/// Zero cost centers
35pub fn zeroStats() void {
36    doClientRequestStmt(.ZeroStats, 0, 0, 0, 0, 0);
37}
38
39/// Toggles collection state.
40/// The collection state specifies whether the happening of events
41/// should be noted or if they are to be ignored. Events are noted
42/// by increment of counters in a cost center
43pub fn toggleCollect() void {
44    doClientRequestStmt(.ToggleCollect, 0, 0, 0, 0, 0);
45}
46
47/// Start full callgrind instrumentation if not already switched on.
48/// When cache simulation is done, it will flush the simulated cache;
49/// this will lead to an artificial cache warmup phase afterwards with
50/// cache misses which would not have happened in reality.
51pub fn startInstrumentation() void {
52    doClientRequestStmt(.StartInstrumentation, 0, 0, 0, 0, 0);
53}
54
55/// Stop full callgrind instrumentation if not already switched off.
56/// This flushes Valgrinds translation cache, and does no additional
57/// instrumentation afterwards, which effectively will run at the same
58/// speed as the "none" tool (ie. at minimal slowdown).
59/// Use this to bypass Callgrind aggregation for uninteresting code parts.
60/// To start Callgrind in this mode to ignore the setup phase, use
61/// the option "--instr-atstart=no".
62pub fn stopInstrumentation() void {
63    doClientRequestStmt(.StopInstrumentation, 0, 0, 0, 0, 0);
64}