mach: Initial commit for gamemode
This commit is contained in:
PiergiorgioZagaria
Stephen Gutekanst
parent
25b6288efe
commit
509ebd13ab
9 changed files with 2617 additions and 0 deletions
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@ -7,6 +7,7 @@ pub const ecs = @import("ecs/build.zig");
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const freetype = @import("freetype/build.zig");
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const freetype = @import("freetype/build.zig");
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const sysaudio = @import("sysaudio/build.zig");
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const sysaudio = @import("sysaudio/build.zig");
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const sysjs = @import("sysjs/build.zig");
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const sysjs = @import("sysjs/build.zig");
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const gamemode = @import("gamemode-zig/build.zig");
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const Pkg = std.build.Pkg;
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const Pkg = std.build.Pkg;
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pub fn build(b: *std.build.Builder) void {
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pub fn build(b: *std.build.Builder) void {
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@ -226,6 +227,13 @@ pub const App = struct {
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exe.addPackage(gpu.pkg);
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exe.addPackage(gpu.pkg);
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exe.addPackage(glfw.pkg);
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exe.addPackage(glfw.pkg);
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if (target.os.tag == .linux) {
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exe.addPackage(gamemode.pkg);
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// TODO: choose between system lib vs buildlib?
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gamemode.link(exe);
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// gamemode.buildAndLink(b, exe);
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}
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break :blk exe;
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break :blk exe;
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}
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}
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};
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};
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23
gamemode-zig/build.zig
Normal file
23
gamemode-zig/build.zig
Normal file
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@ -0,0 +1,23 @@
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const std = @import("std");
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pub const pkg = std.build.Pkg{
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.name = "gamemode",
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.source = .{ .path = thisDir() ++ "/src/gamemode.zig" },
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};
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/// Link system library gamemode
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pub fn link(exe: *std.build.LibExeObjStep) void {
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exe.linkSystemLibrary("gamemode");
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}
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/// TODO:
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/// Build and link gamemode
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pub fn buildAndLink(b: *std.build.Builder, exe: *std.build.LibExeObjStep) void {
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const lib = b.addSharedLibrarySource("gamemode", std.build.FileSource{ .path = thisDir() ++ "/c/client_impl.c" }, .unversioned);
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lib.linkLibC();
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exe.linkLibrary(lib);
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}
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fn thisDir() []const u8 {
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return std.fs.path.dirname(@src().file) orelse ".";
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}
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395
gamemode-zig/c/client_impl.c
Normal file
395
gamemode-zig/c/client_impl.c
Normal file
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@ -0,0 +1,395 @@
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/*
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Copyright (c) 2017-2019, Feral Interactive
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Feral Interactive nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#define _GNU_SOURCE
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#include <common-helpers.h>
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#include <common-pidfds.h>
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#include <dbus/dbus.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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// For developmental purposes
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#define DO_TRACE 0
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// D-Bus name, path, iface
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#define DAEMON_DBUS_NAME "com.feralinteractive.GameMode"
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#define DAEMON_DBUS_PATH "/com/feralinteractive/GameMode"
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#define DAEMON_DBUS_IFACE "com.feralinteractive.GameMode"
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#define PORTAL_DBUS_NAME "org.freedesktop.portal.Desktop"
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#define PORTAL_DBUS_PATH "/org/freedesktop/portal/desktop"
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#define PORTAL_DBUS_IFACE "org.freedesktop.portal.GameMode"
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// Cleanup macros
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#define _cleanup_(x) __attribute__((cleanup(x)))
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#define _cleanup_bus_ _cleanup_(hop_off_the_bus)
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#define _cleanup_msg_ _cleanup_(cleanup_msg)
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#define _cleanup_dpc_ _cleanup_(cleanup_pending_call)
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#define _cleanup_fds_ _cleanup_(cleanup_fd_array)
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#ifdef NDEBUG
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#define DEBUG(...)
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#else
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#define DEBUG(...) fprintf(stderr, __VA_ARGS__)
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#endif
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#if DO_TRACE
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#define TRACE(...) fprintf(stderr, __VA_ARGS__)
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#else
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#define TRACE(...)
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#endif
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// Prototypes
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static int log_error(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
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// Storage for error strings
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static char error_string[512] = { 0 };
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// memory helpers
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static void cleanup_fd_array(int **fdlist)
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{
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if (fdlist == NULL || *fdlist == NULL)
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return;
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int errsave = errno;
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for (int *fd = *fdlist; *fd != -1; fd++) {
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TRACE("GM Closing fd %d\n", *fd);
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(void)close(*fd);
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}
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errno = errsave;
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free(*fdlist);
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}
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// Allocate a -1 termianted array of ints
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static inline int *alloc_fd_array(int n)
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{
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int *fds;
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size_t count = (size_t)n + 1; /* -1, terminated */
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fds = (int *)malloc(sizeof(int) * count);
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for (size_t i = 0; i < count; i++)
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fds[i] = -1;
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return fds;
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}
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// Helper to check if we are running inside a flatpak
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static int in_flatpak(void)
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{
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static int status = -1;
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if (status == -1) {
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struct stat sb;
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int r;
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r = lstat("/.flatpak-info", &sb);
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status = r == 0 && sb.st_size > 0;
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}
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return status;
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}
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static int log_error(const char *fmt, ...)
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{
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va_list args;
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int n;
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va_start(args, fmt);
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n = vsnprintf(error_string, sizeof(error_string), fmt, args);
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va_end(args);
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if (n < 0)
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DEBUG("Failed to format error string");
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else if ((size_t)n >= sizeof(error_string))
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DEBUG("Error log overflow");
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fprintf(stderr, "GameMode ERROR: %s\n", error_string);
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return -1;
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}
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static void hop_off_the_bus(DBusConnection **bus)
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{
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if (bus == NULL)
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return;
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dbus_connection_unref(*bus);
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}
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static DBusConnection *hop_on_the_bus(void)
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{
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DBusConnection *bus;
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DBusError err;
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dbus_error_init(&err);
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bus = dbus_bus_get(DBUS_BUS_SESSION, &err);
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if (bus == NULL) {
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log_error("Could not connect to bus: %s", err.message);
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dbus_error_free(&err);
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}
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return bus;
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}
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/* cleanup functions */
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static void cleanup_msg(DBusMessage **msg)
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{
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if (msg == NULL || *msg == NULL)
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return;
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dbus_message_unref(*msg);
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}
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static void cleanup_pending_call(DBusPendingCall **call)
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{
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if (call == NULL || *call == NULL)
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return;
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dbus_pending_call_unref(*call);
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}
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/* internal API */
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static int make_request(DBusConnection *bus, int native, int use_pidfds, const char *method,
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pid_t *pids, int npids, DBusError *error)
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{
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_cleanup_msg_ DBusMessage *msg = NULL;
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_cleanup_dpc_ DBusPendingCall *call = NULL;
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_cleanup_fds_ int *fds = NULL;
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char action[256] = {
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0,
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};
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DBusError err;
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DBusMessageIter iter;
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int res = -1;
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TRACE("GM: Incoming request: %s, npids: %d, native: %d pifds: %d\n",
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method,
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npids,
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native,
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use_pidfds);
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if (use_pidfds) {
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fds = alloc_fd_array(npids);
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res = open_pidfds(pids, fds, npids);
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if (res != npids) {
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dbus_set_error(error, DBUS_ERROR_FAILED, "Could not open pidfd for %d", (int)pids[res]);
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return -1;
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}
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if (strstr(method, "ByPID"))
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snprintf(action, sizeof(action), "%sFd", method);
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else
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snprintf(action, sizeof(action), "%sByPIDFd", method);
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method = action;
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}
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TRACE("GM: Making request: %s, npids: %d, native: %d pifds: %d\n",
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method,
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npids,
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native,
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use_pidfds);
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// If we are inside a flatpak we need to talk to the portal instead
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const char *dest = native ? DAEMON_DBUS_NAME : PORTAL_DBUS_NAME;
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const char *path = native ? DAEMON_DBUS_PATH : PORTAL_DBUS_PATH;
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const char *iface = native ? DAEMON_DBUS_IFACE : PORTAL_DBUS_IFACE;
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msg = dbus_message_new_method_call(dest, path, iface, method);
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if (!msg) {
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dbus_set_error_const(error, DBUS_ERROR_FAILED, "Could not create dbus message");
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return -1;
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}
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dbus_message_iter_init_append(msg, &iter);
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for (int i = 0; i < npids; i++) {
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dbus_int32_t p;
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int type;
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if (use_pidfds) {
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type = DBUS_TYPE_UNIX_FD;
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p = (dbus_int32_t)fds[i];
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} else {
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type = DBUS_TYPE_INT32;
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p = (dbus_int32_t)pids[i];
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}
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dbus_message_iter_append_basic(&iter, type, &p);
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}
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dbus_connection_send_with_reply(bus, msg, &call, -1);
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dbus_connection_flush(bus);
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dbus_message_unref(msg);
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msg = NULL;
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dbus_pending_call_block(call);
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msg = dbus_pending_call_steal_reply(call);
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if (msg == NULL) {
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dbus_set_error_const(error, DBUS_ERROR_FAILED, "Did not receive a reply");
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return -1;
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}
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dbus_error_init(&err);
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res = -1;
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if (dbus_set_error_from_message(&err, msg)) {
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dbus_set_error(error,
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err.name,
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"Could not call method '%s' on '%s': %s",
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method,
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dest,
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err.message);
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} else if (!dbus_message_iter_init(msg, &iter) ||
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dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_INT32) {
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dbus_set_error(error, DBUS_ERROR_INVALID_SIGNATURE, "Failed to parse response");
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} else {
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dbus_message_iter_get_basic(&iter, &res);
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}
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/* free the local error */
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if (dbus_error_is_set(&err))
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dbus_error_free(&err);
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return res;
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}
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static int gamemode_request(const char *method, pid_t for_pid)
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{
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_cleanup_bus_ DBusConnection *bus = NULL;
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static int use_pidfs = 1;
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DBusError err;
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pid_t pids[2];
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int npids;
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int native;
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int res = -1;
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native = !in_flatpak();
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/* pid[0] is the client, i.e. the game
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* pid[1] is the requestor, i.e. this process
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*
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* we setup the array such that pids[1] will always be a valid
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* pid, because if we are going to use the pidfd based API,
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* both pids are being sent, even if they are the same
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*/
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pids[1] = getpid();
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pids[0] = for_pid != 0 ? for_pid : pids[1];
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TRACE("GM: [%d] request '%s' received (by: %d) [portal: %s]\n",
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(int)pids[0],
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method,
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(int)pids[1],
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(native ? "n" : "y"));
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bus = hop_on_the_bus();
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if (bus == NULL)
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return -1;
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dbus_error_init(&err);
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retry:
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if (for_pid != 0 || use_pidfs)
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npids = 2;
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else
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npids = 1;
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res = make_request(bus, native, use_pidfs, method, pids, npids, &err);
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if (res == -1 && use_pidfs && dbus_error_is_set(&err)) {
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||||||
|
TRACE("GM: Request with pidfds failed (%s). Retrying.\n", err.message);
|
||||||
|
use_pidfs = 0;
|
||||||
|
dbus_error_free(&err);
|
||||||
|
goto retry;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (res == -1 && dbus_error_is_set(&err))
|
||||||
|
log_error("D-Bus error: %s", err.message);
|
||||||
|
|
||||||
|
TRACE("GM: [%d] request '%s' done: %d\n", (int)pids[0], method, res);
|
||||||
|
|
||||||
|
if (dbus_error_is_set(&err))
|
||||||
|
dbus_error_free(&err);
|
||||||
|
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get the error string
|
||||||
|
extern const char *real_gamemode_error_string(void)
|
||||||
|
{
|
||||||
|
return error_string;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapper to call RegisterGame
|
||||||
|
extern int real_gamemode_request_start(void)
|
||||||
|
{
|
||||||
|
return gamemode_request("RegisterGame", 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapper to call UnregisterGame
|
||||||
|
extern int real_gamemode_request_end(void)
|
||||||
|
{
|
||||||
|
return gamemode_request("UnregisterGame", 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapper to call QueryStatus
|
||||||
|
extern int real_gamemode_query_status(void)
|
||||||
|
{
|
||||||
|
return gamemode_request("QueryStatus", 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapper to call RegisterGameByPID
|
||||||
|
extern int real_gamemode_request_start_for(pid_t pid)
|
||||||
|
{
|
||||||
|
return gamemode_request("RegisterGameByPID", pid);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapper to call UnregisterGameByPID
|
||||||
|
extern int real_gamemode_request_end_for(pid_t pid)
|
||||||
|
{
|
||||||
|
return gamemode_request("UnregisterGameByPID", pid);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wrapper to call QueryStatusByPID
|
||||||
|
extern int real_gamemode_query_status_for(pid_t pid)
|
||||||
|
{
|
||||||
|
return gamemode_request("QueryStatusByPID", pid);
|
||||||
|
}
|
||||||
35
gamemode-zig/c/client_loader.c
Normal file
35
gamemode-zig/c/client_loader.c
Normal file
|
|
@ -0,0 +1,35 @@
|
||||||
|
/*
|
||||||
|
|
||||||
|
Copyright (c) 2017-2019, Feral Interactive
|
||||||
|
All rights reserved.
|
||||||
|
|
||||||
|
Redistribution and use in source and binary forms, with or without
|
||||||
|
modification, are permitted provided that the following conditions are met:
|
||||||
|
|
||||||
|
* Redistributions of source code must retain the above copyright notice,
|
||||||
|
this list of conditions and the following disclaimer.
|
||||||
|
* Redistributions in binary form must reproduce the above copyright
|
||||||
|
notice, this list of conditions and the following disclaimer in the
|
||||||
|
documentation and/or other materials provided with the distribution.
|
||||||
|
* Neither the name of Feral Interactive nor the names of its contributors
|
||||||
|
may be used to endorse or promote products derived from this software
|
||||||
|
without specific prior written permission.
|
||||||
|
|
||||||
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||||
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||||
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||||
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||||
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||||
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||||
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||||
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||||
|
POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
// Simply include the header with GAMEMODE_AUTO set
|
||||||
|
// This will ensure it calls the functions when it's loaded
|
||||||
|
#define GAMEMODE_AUTO
|
||||||
|
#include "gamemode_client.h"
|
||||||
376
gamemode-zig/c/gamemode_client.h
Normal file
376
gamemode-zig/c/gamemode_client.h
Normal file
|
|
@ -0,0 +1,376 @@
|
||||||
|
/*
|
||||||
|
|
||||||
|
Copyright (c) 2017-2019, Feral Interactive
|
||||||
|
All rights reserved.
|
||||||
|
|
||||||
|
Redistribution and use in source and binary forms, with or without
|
||||||
|
modification, are permitted provided that the following conditions are met:
|
||||||
|
|
||||||
|
* Redistributions of source code must retain the above copyright notice,
|
||||||
|
this list of conditions and the following disclaimer.
|
||||||
|
* Redistributions in binary form must reproduce the above copyright
|
||||||
|
notice, this list of conditions and the following disclaimer in the
|
||||||
|
documentation and/or other materials provided with the distribution.
|
||||||
|
* Neither the name of Feral Interactive nor the names of its contributors
|
||||||
|
may be used to endorse or promote products derived from this software
|
||||||
|
without specific prior written permission.
|
||||||
|
|
||||||
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||||
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||||
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||||
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||||
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||||
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||||
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||||
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||||
|
POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
|
||||||
|
*/
|
||||||
|
#ifndef CLIENT_GAMEMODE_H
|
||||||
|
#define CLIENT_GAMEMODE_H
|
||||||
|
/*
|
||||||
|
* GameMode supports the following client functions
|
||||||
|
* Requests are refcounted in the daemon
|
||||||
|
*
|
||||||
|
* int gamemode_request_start() - Request gamemode starts
|
||||||
|
* 0 if the request was sent successfully
|
||||||
|
* -1 if the request failed
|
||||||
|
*
|
||||||
|
* int gamemode_request_end() - Request gamemode ends
|
||||||
|
* 0 if the request was sent successfully
|
||||||
|
* -1 if the request failed
|
||||||
|
*
|
||||||
|
* GAMEMODE_AUTO can be defined to make the above two functions apply during static init and
|
||||||
|
* destruction, as appropriate. In this configuration, errors will be printed to stderr
|
||||||
|
*
|
||||||
|
* int gamemode_query_status() - Query the current status of gamemode
|
||||||
|
* 0 if gamemode is inactive
|
||||||
|
* 1 if gamemode is active
|
||||||
|
* 2 if gamemode is active and this client is registered
|
||||||
|
* -1 if the query failed
|
||||||
|
*
|
||||||
|
* int gamemode_request_start_for(pid_t pid) - Request gamemode starts for another process
|
||||||
|
* 0 if the request was sent successfully
|
||||||
|
* -1 if the request failed
|
||||||
|
* -2 if the request was rejected
|
||||||
|
*
|
||||||
|
* int gamemode_request_end_for(pid_t pid) - Request gamemode ends for another process
|
||||||
|
* 0 if the request was sent successfully
|
||||||
|
* -1 if the request failed
|
||||||
|
* -2 if the request was rejected
|
||||||
|
*
|
||||||
|
* int gamemode_query_status_for(pid_t pid) - Query status of gamemode for another process
|
||||||
|
* 0 if gamemode is inactive
|
||||||
|
* 1 if gamemode is active
|
||||||
|
* 2 if gamemode is active and this client is registered
|
||||||
|
* -1 if the query failed
|
||||||
|
*
|
||||||
|
* const char* gamemode_error_string() - Get an error string
|
||||||
|
* returns a string describing any of the above errors
|
||||||
|
*
|
||||||
|
* Note: All the above requests can be blocking - dbus requests can and will block while the daemon
|
||||||
|
* handles the request. It is not recommended to make these calls in performance critical code
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <stdbool.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
#include <dlfcn.h>
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
#include <assert.h>
|
||||||
|
|
||||||
|
#include <sys/types.h>
|
||||||
|
|
||||||
|
static char internal_gamemode_client_error_string[512] = { 0 };
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Load libgamemode dynamically to dislodge us from most dependencies.
|
||||||
|
* This allows clients to link and/or use this regardless of runtime.
|
||||||
|
* See SDL2 for an example of the reasoning behind this in terms of
|
||||||
|
* dynamic versioning as well.
|
||||||
|
*/
|
||||||
|
static volatile int internal_libgamemode_loaded = 1;
|
||||||
|
|
||||||
|
/* Typedefs for the functions to load */
|
||||||
|
typedef int (*api_call_return_int)(void);
|
||||||
|
typedef const char *(*api_call_return_cstring)(void);
|
||||||
|
typedef int (*api_call_pid_return_int)(pid_t);
|
||||||
|
|
||||||
|
/* Storage for functors */
|
||||||
|
static api_call_return_int REAL_internal_gamemode_request_start = NULL;
|
||||||
|
static api_call_return_int REAL_internal_gamemode_request_end = NULL;
|
||||||
|
static api_call_return_int REAL_internal_gamemode_query_status = NULL;
|
||||||
|
static api_call_return_cstring REAL_internal_gamemode_error_string = NULL;
|
||||||
|
static api_call_pid_return_int REAL_internal_gamemode_request_start_for = NULL;
|
||||||
|
static api_call_pid_return_int REAL_internal_gamemode_request_end_for = NULL;
|
||||||
|
static api_call_pid_return_int REAL_internal_gamemode_query_status_for = NULL;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Internal helper to perform the symbol binding safely.
|
||||||
|
*
|
||||||
|
* Returns 0 on success and -1 on failure
|
||||||
|
*/
|
||||||
|
__attribute__((always_inline)) static inline int internal_bind_libgamemode_symbol(
|
||||||
|
void *handle, const char *name, void **out_func, size_t func_size, bool required)
|
||||||
|
{
|
||||||
|
void *symbol_lookup = NULL;
|
||||||
|
char *dl_error = NULL;
|
||||||
|
|
||||||
|
/* Safely look up the symbol */
|
||||||
|
symbol_lookup = dlsym(handle, name);
|
||||||
|
dl_error = dlerror();
|
||||||
|
if (required && (dl_error || !symbol_lookup)) {
|
||||||
|
snprintf(internal_gamemode_client_error_string,
|
||||||
|
sizeof(internal_gamemode_client_error_string),
|
||||||
|
"dlsym failed - %s",
|
||||||
|
dl_error);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Have the symbol correctly, copy it to make it usable */
|
||||||
|
memcpy(out_func, &symbol_lookup, func_size);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Loads libgamemode and needed functions
|
||||||
|
*
|
||||||
|
* Returns 0 on success and -1 on failure
|
||||||
|
*/
|
||||||
|
__attribute__((always_inline)) static inline int internal_load_libgamemode(void)
|
||||||
|
{
|
||||||
|
/* We start at 1, 0 is a success and -1 is a fail */
|
||||||
|
if (internal_libgamemode_loaded != 1) {
|
||||||
|
return internal_libgamemode_loaded;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Anonymous struct type to define our bindings */
|
||||||
|
struct binding {
|
||||||
|
const char *name;
|
||||||
|
void **functor;
|
||||||
|
size_t func_size;
|
||||||
|
bool required;
|
||||||
|
} bindings[] = {
|
||||||
|
{ "real_gamemode_request_start",
|
||||||
|
(void **)&REAL_internal_gamemode_request_start,
|
||||||
|
sizeof(REAL_internal_gamemode_request_start),
|
||||||
|
true },
|
||||||
|
{ "real_gamemode_request_end",
|
||||||
|
(void **)&REAL_internal_gamemode_request_end,
|
||||||
|
sizeof(REAL_internal_gamemode_request_end),
|
||||||
|
true },
|
||||||
|
{ "real_gamemode_query_status",
|
||||||
|
(void **)&REAL_internal_gamemode_query_status,
|
||||||
|
sizeof(REAL_internal_gamemode_query_status),
|
||||||
|
false },
|
||||||
|
{ "real_gamemode_error_string",
|
||||||
|
(void **)&REAL_internal_gamemode_error_string,
|
||||||
|
sizeof(REAL_internal_gamemode_error_string),
|
||||||
|
true },
|
||||||
|
{ "real_gamemode_request_start_for",
|
||||||
|
(void **)&REAL_internal_gamemode_request_start_for,
|
||||||
|
sizeof(REAL_internal_gamemode_request_start_for),
|
||||||
|
false },
|
||||||
|
{ "real_gamemode_request_end_for",
|
||||||
|
(void **)&REAL_internal_gamemode_request_end_for,
|
||||||
|
sizeof(REAL_internal_gamemode_request_end_for),
|
||||||
|
false },
|
||||||
|
{ "real_gamemode_query_status_for",
|
||||||
|
(void **)&REAL_internal_gamemode_query_status_for,
|
||||||
|
sizeof(REAL_internal_gamemode_query_status_for),
|
||||||
|
false },
|
||||||
|
};
|
||||||
|
|
||||||
|
void *libgamemode = NULL;
|
||||||
|
|
||||||
|
/* Try and load libgamemode */
|
||||||
|
libgamemode = dlopen("libgamemode.so.0", RTLD_NOW);
|
||||||
|
if (!libgamemode) {
|
||||||
|
/* Attempt to load unversioned library for compatibility with older
|
||||||
|
* versions (as of writing, there are no ABI changes between the two -
|
||||||
|
* this may need to change if ever ABI-breaking changes are made) */
|
||||||
|
libgamemode = dlopen("libgamemode.so", RTLD_NOW);
|
||||||
|
if (!libgamemode) {
|
||||||
|
snprintf(internal_gamemode_client_error_string,
|
||||||
|
sizeof(internal_gamemode_client_error_string),
|
||||||
|
"dlopen failed - %s",
|
||||||
|
dlerror());
|
||||||
|
internal_libgamemode_loaded = -1;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Attempt to bind all symbols */
|
||||||
|
for (size_t i = 0; i < sizeof(bindings) / sizeof(bindings[0]); i++) {
|
||||||
|
struct binding *binder = &bindings[i];
|
||||||
|
|
||||||
|
if (internal_bind_libgamemode_symbol(libgamemode,
|
||||||
|
binder->name,
|
||||||
|
binder->functor,
|
||||||
|
binder->func_size,
|
||||||
|
binder->required)) {
|
||||||
|
internal_libgamemode_loaded = -1;
|
||||||
|
return -1;
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Success */
|
||||||
|
internal_libgamemode_loaded = 0;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Redirect to the real libgamemode
|
||||||
|
*/
|
||||||
|
__attribute__((always_inline)) static inline const char *gamemode_error_string(void)
|
||||||
|
{
|
||||||
|
/* If we fail to load the system gamemode, or we have an error string already, return our error
|
||||||
|
* string instead of diverting to the system version */
|
||||||
|
if (internal_load_libgamemode() < 0 || internal_gamemode_client_error_string[0] != '\0') {
|
||||||
|
return internal_gamemode_client_error_string;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Assert for static analyser that the function is not NULL */
|
||||||
|
assert(REAL_internal_gamemode_error_string != NULL);
|
||||||
|
|
||||||
|
return REAL_internal_gamemode_error_string();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Redirect to the real libgamemode
|
||||||
|
* Allow automatically requesting game mode
|
||||||
|
* Also prints errors as they happen.
|
||||||
|
*/
|
||||||
|
#ifdef GAMEMODE_AUTO
|
||||||
|
__attribute__((constructor))
|
||||||
|
#else
|
||||||
|
__attribute__((always_inline)) static inline
|
||||||
|
#endif
|
||||||
|
int gamemode_request_start(void)
|
||||||
|
{
|
||||||
|
/* Need to load gamemode */
|
||||||
|
if (internal_load_libgamemode() < 0) {
|
||||||
|
#ifdef GAMEMODE_AUTO
|
||||||
|
fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
|
||||||
|
#endif
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Assert for static analyser that the function is not NULL */
|
||||||
|
assert(REAL_internal_gamemode_request_start != NULL);
|
||||||
|
|
||||||
|
if (REAL_internal_gamemode_request_start() < 0) {
|
||||||
|
#ifdef GAMEMODE_AUTO
|
||||||
|
fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
|
||||||
|
#endif
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Redirect to the real libgamemode */
|
||||||
|
#ifdef GAMEMODE_AUTO
|
||||||
|
__attribute__((destructor))
|
||||||
|
#else
|
||||||
|
__attribute__((always_inline)) static inline
|
||||||
|
#endif
|
||||||
|
int gamemode_request_end(void)
|
||||||
|
{
|
||||||
|
/* Need to load gamemode */
|
||||||
|
if (internal_load_libgamemode() < 0) {
|
||||||
|
#ifdef GAMEMODE_AUTO
|
||||||
|
fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
|
||||||
|
#endif
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Assert for static analyser that the function is not NULL */
|
||||||
|
assert(REAL_internal_gamemode_request_end != NULL);
|
||||||
|
|
||||||
|
if (REAL_internal_gamemode_request_end() < 0) {
|
||||||
|
#ifdef GAMEMODE_AUTO
|
||||||
|
fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
|
||||||
|
#endif
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Redirect to the real libgamemode */
|
||||||
|
__attribute__((always_inline)) static inline int gamemode_query_status(void)
|
||||||
|
{
|
||||||
|
/* Need to load gamemode */
|
||||||
|
if (internal_load_libgamemode() < 0) {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (REAL_internal_gamemode_query_status == NULL) {
|
||||||
|
snprintf(internal_gamemode_client_error_string,
|
||||||
|
sizeof(internal_gamemode_client_error_string),
|
||||||
|
"gamemode_query_status missing (older host?)");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return REAL_internal_gamemode_query_status();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Redirect to the real libgamemode */
|
||||||
|
__attribute__((always_inline)) static inline int gamemode_request_start_for(pid_t pid)
|
||||||
|
{
|
||||||
|
/* Need to load gamemode */
|
||||||
|
if (internal_load_libgamemode() < 0) {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (REAL_internal_gamemode_request_start_for == NULL) {
|
||||||
|
snprintf(internal_gamemode_client_error_string,
|
||||||
|
sizeof(internal_gamemode_client_error_string),
|
||||||
|
"gamemode_request_start_for missing (older host?)");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return REAL_internal_gamemode_request_start_for(pid);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Redirect to the real libgamemode */
|
||||||
|
__attribute__((always_inline)) static inline int gamemode_request_end_for(pid_t pid)
|
||||||
|
{
|
||||||
|
/* Need to load gamemode */
|
||||||
|
if (internal_load_libgamemode() < 0) {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (REAL_internal_gamemode_request_end_for == NULL) {
|
||||||
|
snprintf(internal_gamemode_client_error_string,
|
||||||
|
sizeof(internal_gamemode_client_error_string),
|
||||||
|
"gamemode_request_end_for missing (older host?)");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return REAL_internal_gamemode_request_end_for(pid);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Redirect to the real libgamemode */
|
||||||
|
__attribute__((always_inline)) static inline int gamemode_query_status_for(pid_t pid)
|
||||||
|
{
|
||||||
|
/* Need to load gamemode */
|
||||||
|
if (internal_load_libgamemode() < 0) {
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (REAL_internal_gamemode_query_status_for == NULL) {
|
||||||
|
snprintf(internal_gamemode_client_error_string,
|
||||||
|
sizeof(internal_gamemode_client_error_string),
|
||||||
|
"gamemode_query_status_for missing (older host?)");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return REAL_internal_gamemode_query_status_for(pid);
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif // CLIENT_GAMEMODE_H
|
||||||
13
gamemode-zig/fetch_upstream.sh
Executable file
13
gamemode-zig/fetch_upstream.sh
Executable file
|
|
@ -0,0 +1,13 @@
|
||||||
|
#!/usr/bin/env bash
|
||||||
|
|
||||||
|
rm ./c/*
|
||||||
|
cd ./c
|
||||||
|
wget "https://github.com/FeralInteractive/gamemode/raw/master/lib/gamemode_client.h"
|
||||||
|
wget "https://github.com/FeralInteractive/gamemode/raw/master/lib/client_impl.c"
|
||||||
|
wget "https://github.com/FeralInteractive/gamemode/raw/master/lib/client_loader.c"
|
||||||
|
cd ..
|
||||||
|
|
||||||
|
# The output from translate-c isn't perfect, so we need this fix
|
||||||
|
zig translate-c ./c/gamemode_client.h -lc | sed "s#functor\(.*\)@alignCast\(.*\),\(.*\))#functor\1\3#" > ./src/gamemode_client.zig
|
||||||
|
|
||||||
|
rm -r ./zig-cache
|
||||||
76
gamemode-zig/src/gamemode.zig
Normal file
76
gamemode-zig/src/gamemode.zig
Normal file
|
|
@ -0,0 +1,76 @@
|
||||||
|
//! Note: All the above requests can be blocking - dbus requests can and will block while the daemon
|
||||||
|
//! handles the request. It is not recommended to make these calls in performance critical code
|
||||||
|
|
||||||
|
pub const c = @import("gamemode_client.zig");
|
||||||
|
|
||||||
|
pub const GamemodeError = error{
|
||||||
|
RequestFailed,
|
||||||
|
RequestRejected,
|
||||||
|
QueryFailed,
|
||||||
|
};
|
||||||
|
|
||||||
|
pub const GamemodeStatus = enum(c_int) {
|
||||||
|
Inactive = 0,
|
||||||
|
Active = 1,
|
||||||
|
/// Gamemode is active and the client is registered
|
||||||
|
ActiveAndRegistered = 2,
|
||||||
|
};
|
||||||
|
|
||||||
|
/// Request gamemode starts
|
||||||
|
pub fn requestStart() GamemodeError!void {
|
||||||
|
if (c.gamemode_request_start() == -1)
|
||||||
|
return GamemodeError.RequestFailed;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Request gamemode ends
|
||||||
|
pub fn requestEnd() GamemodeError!void {
|
||||||
|
if (c.gamemode_request_end() == -1)
|
||||||
|
return GamemodeError.RequestFailed;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Query the current status of gamemode
|
||||||
|
pub fn queryStatus() GamemodeError!GamemodeStatus {
|
||||||
|
const status = c.gamemode_query_status();
|
||||||
|
if (status == -1)
|
||||||
|
return GamemodeError.QueryFailed;
|
||||||
|
|
||||||
|
return @intToEnum(GamemodeStatus, status);
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Request gamemode starts for another process
|
||||||
|
pub fn requestStartFor(pid: c.pid_t) GamemodeError!void {
|
||||||
|
const res = c.gamemode_request_start_for(pid);
|
||||||
|
if (res == 0) {
|
||||||
|
return;
|
||||||
|
} else if (res == -1) {
|
||||||
|
return GamemodeError.RequestFailed;
|
||||||
|
} else if (res == -2) {
|
||||||
|
return GamemodeError.RequestRejected;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Request gamemode ends for another process
|
||||||
|
pub fn requestEndFor(pid: c.pid_t) GamemodeError!void {
|
||||||
|
const res = c.gamemode_request_end_for(pid);
|
||||||
|
if (res == 0) {
|
||||||
|
return;
|
||||||
|
} else if (res == -1) {
|
||||||
|
return GamemodeError.RequestFailed;
|
||||||
|
} else if (res == -2) {
|
||||||
|
return GamemodeError.RequestRejected;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Query the current status of gamemode for another process
|
||||||
|
pub fn queryStatusFor(pid: c.pid_t) GamemodeError!GamemodeStatus {
|
||||||
|
const status = c.gamemode_query_status_for(pid);
|
||||||
|
if (status == -1)
|
||||||
|
return GamemodeError.QueryFailed;
|
||||||
|
|
||||||
|
return @intToEnum(GamemodeStatus, status);
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Get an error string
|
||||||
|
pub fn errorString() []const u8 {
|
||||||
|
return @import("std").mem.sliceTo(c.gamemode_error_string(), 0);
|
||||||
|
}
|
||||||
1650
gamemode-zig/src/gamemode_client.zig
Normal file
1650
gamemode-zig/src/gamemode_client.zig
Normal file
File diff suppressed because it is too large
Load diff
|
|
@ -1,4 +1,5 @@
|
||||||
const std = @import("std");
|
const std = @import("std");
|
||||||
|
const builtin = @import("builtin");
|
||||||
const glfw = @import("glfw");
|
const glfw = @import("glfw");
|
||||||
const gpu = @import("gpu");
|
const gpu = @import("gpu");
|
||||||
const app_pkg = @import("app");
|
const app_pkg = @import("app");
|
||||||
|
|
@ -44,7 +45,30 @@ pub const Platform = struct {
|
||||||
platform: *Platform,
|
platform: *Platform,
|
||||||
};
|
};
|
||||||
|
|
||||||
|
fn getEnvVarOwned(allocator: std.mem.Allocator, key: []const u8) error{ OutOfMemory, InvalidUtf8 }!?[]u8 {
|
||||||
|
return std.process.getEnvVarOwned(allocator, key) catch |err| switch (err) {
|
||||||
|
error.EnvironmentVariableNotFound => @as(?[]u8, null),
|
||||||
|
else => |e| e,
|
||||||
|
};
|
||||||
|
}
|
||||||
pub fn init(allocator: std.mem.Allocator, core: *Core) !Platform {
|
pub fn init(allocator: std.mem.Allocator, core: *Core) !Platform {
|
||||||
|
if (builtin.os.tag == .linux) {
|
||||||
|
const gamemode = @import("gamemode");
|
||||||
|
const GAMEMODE_ENV = try getEnvVarOwned(allocator, "GAMEMODE");
|
||||||
|
if (GAMEMODE_ENV == null) {
|
||||||
|
gamemode.requestStart() catch |err| {
|
||||||
|
std.log.err("Gamemode error {} -> {s}", .{ err, gamemode.errorString() });
|
||||||
|
};
|
||||||
|
} else {
|
||||||
|
if (!std.ascii.eqlIgnoreCase(GAMEMODE_ENV.?, "off")) {
|
||||||
|
gamemode.requestStart() catch |err| {
|
||||||
|
std.log.err("Gamemode error {} -> {s}", .{ err, gamemode.errorString() });
|
||||||
|
};
|
||||||
|
}
|
||||||
|
allocator.free(GAMEMODE_ENV.?);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
const options = core.options;
|
const options = core.options;
|
||||||
const backend_type = try util.detectBackendType(allocator);
|
const backend_type = try util.detectBackendType(allocator);
|
||||||
|
|
||||||
|
|
@ -214,6 +238,23 @@ pub const Platform = struct {
|
||||||
while (platform.events.popFirst()) |ev| {
|
while (platform.events.popFirst()) |ev| {
|
||||||
platform.allocator.destroy(ev);
|
platform.allocator.destroy(ev);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (builtin.os.tag == .linux) {
|
||||||
|
const gamemode = @import("gamemode");
|
||||||
|
const GAMEMODE_ENV = getEnvVarOwned(platform.allocator, "GAMEMODE") catch unreachable;
|
||||||
|
if (GAMEMODE_ENV == null) {
|
||||||
|
gamemode.requestEnd() catch |err| {
|
||||||
|
std.log.err("Gamemode error {} -> {s}", .{ err, gamemode.errorString() });
|
||||||
|
};
|
||||||
|
} else {
|
||||||
|
if (!std.ascii.eqlIgnoreCase(GAMEMODE_ENV.?, "off")) {
|
||||||
|
gamemode.requestEnd() catch |err| {
|
||||||
|
std.log.err("Gamemode error {} -> {s}", .{ err, gamemode.errorString() });
|
||||||
|
};
|
||||||
|
}
|
||||||
|
platform.allocator.free(GAMEMODE_ENV.?);
|
||||||
|
}
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
fn pushEvent(platform: *Platform, event: structs.Event) void {
|
fn pushEvent(platform: *Platform, event: structs.Event) void {
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue