pcsx2/common/Linux/LnxMisc.cpp

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// SPDX-FileCopyrightText: 2002-2023 PCSX2 Dev Team
// SPDX-License-Identifier: LGPL-3.0+
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#if !defined(_WIN32) && !defined(__APPLE__)
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#include "common/Pcsx2Types.h"
#include "common/HostSys.h"
#include "common/ScopedGuard.h"
#include "common/StringUtil.h"
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#include "common/Threading.h"
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#include "common/WindowInfo.h"
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#include "fmt/core.h"
#include <ctype.h>
#include <time.h>
#include <unistd.h>
#include <optional>
#include <spawn.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <unistd.h>
#include <dbus/dbus.h>
// Returns 0 on failure (not supported by the operating system).
u64 GetPhysicalMemory()
{
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u64 pages = 0;
#ifdef _SC_PHYS_PAGES
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pages = sysconf(_SC_PHYS_PAGES);
#endif
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return pages * getpagesize();
}
u64 GetTickFrequency()
{
return 1000000000; // unix measures in nanoseconds
}
u64 GetCPUTicks()
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (static_cast<u64>(ts.tv_sec) * 1000000000ULL) + ts.tv_nsec;
}
std::string GetOSVersionString()
{
#if defined(__linux__)
return "Linux";
#else // freebsd
return "Other Unix";
#endif
}
static bool SetScreensaverInhibitDBus(const bool inhibit_requested, const char* program_name, const char* reason)
{
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static dbus_uint32_t s_cookie;
const char* bus_method = (inhibit_requested) ? "Inhibit" : "UnInhibit";
DBusError error_dbus;
DBusConnection* connection = nullptr;
static DBusConnection* s_comparison_connection;
DBusMessage* message = nullptr;
DBusMessage* response = nullptr;
DBusMessageIter message_itr;
ScopedGuard cleanup = [&]() {
if (dbus_error_is_set(&error_dbus))
dbus_error_free(&error_dbus);
if (message)
dbus_message_unref(message);
if (response)
dbus_message_unref(response);
};
dbus_error_init(&error_dbus);
// Calling dbus_bus_get() after the first time returns a pointer to the existing connection.
connection = dbus_bus_get(DBUS_BUS_SESSION, &error_dbus);
if (!connection || (dbus_error_is_set(&error_dbus)))
return false;
if (s_comparison_connection != connection)
{
dbus_connection_set_exit_on_disconnect(connection, false);
s_cookie = 0;
s_comparison_connection = connection;
}
message = dbus_message_new_method_call("org.freedesktop.ScreenSaver", "/org/freedesktop/ScreenSaver", "org.freedesktop.ScreenSaver", bus_method);
if (!message)
return false;
// Initialize an append iterator for the message, gets freed with the message.
dbus_message_iter_init_append(message, &message_itr);
if (inhibit_requested)
{
// Guard against repeat inhibitions which would add extra inhibitors each generating a different cookie.
if (s_cookie)
return false;
// Append process/window name.
if (!dbus_message_iter_append_basic(&message_itr, DBUS_TYPE_STRING, &program_name))
return false;
// Append reason for inhibiting the screensaver.
if (!dbus_message_iter_append_basic(&message_itr, DBUS_TYPE_STRING, &reason))
return false;
}
else
{
// Only Append the cookie.
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if (!dbus_message_iter_append_basic(&message_itr, DBUS_TYPE_UINT32, &s_cookie))
return false;
}
// Send message and get response.
response = dbus_connection_send_with_reply_and_block(connection, message, DBUS_TIMEOUT_USE_DEFAULT, &error_dbus);
if (!response || dbus_error_is_set(&error_dbus))
return false;
s_cookie = 0;
if (inhibit_requested)
{
// Get the cookie from the response message.
if (!dbus_message_get_args(response, &error_dbus, DBUS_TYPE_UINT32, &s_cookie, DBUS_TYPE_INVALID) || dbus_error_is_set(&error_dbus))
return false;
}
return true;
}
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bool WindowInfo::InhibitScreensaver(const WindowInfo& wi, bool inhibit)
{
return SetScreensaverInhibitDBus(inhibit, "PCSX2", "PCSX2 VM is running.");
}
bool Common::PlaySoundAsync(const char* path)
{
#ifdef __linux__
// This is... pretty awful. But I can't think of a better way without linking to e.g. gstreamer.
const char* cmdname = "aplay";
const char* argv[] = {cmdname, path, nullptr};
pid_t pid;
// Since we set SA_NOCLDWAIT in Qt, we don't need to wait here.
int res = posix_spawnp(&pid, cmdname, nullptr, nullptr, const_cast<char**>(argv), environ);
return (res == 0);
#else
return false;
#endif
}
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void Threading::Sleep(int ms)
{
usleep(1000 * ms);
}
void Threading::SleepUntil(u64 ticks)
{
struct timespec ts;
ts.tv_sec = static_cast<time_t>(ticks / 1000000000ULL);
ts.tv_nsec = static_cast<long>(ticks % 1000000000ULL);
clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts, nullptr);
}
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#endif