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godot/drivers/unix/os_unix.cpp
Fabio Alessandrelli b8ddaf9c33 Refactor ScriptDebugger. 
EngineDebugger is the new interface to access the debugger.
It tries to be as agnostic as possible on the data that various
subsystems can expose.

It allows 2 types of interactions:

- Profilers:
  A subsystem can register a profiler, assigning it a unique name.
  That name can be used to activate the profiler or add data to it.
  The registered profiler can be composed of up to 3 functions:
    - Toggle: called when the profiler is activated/deactivated.
    - Add: called whenever data is added to the debugger
      (via `EngineDebugger::profiler_add_frame_data`)
    - Tick: called every frame (during idle), receives frame times.

- Captures: (Only relevant in remote debugger for now)
  A subsystem can register a capture, assigning it a unique name.
  When receiving a message, the remote debugger will check if it starts
  with `[prefix]:` and call the associated capture with name `prefix`.

Port MultiplayerAPI, Servers, Scripts, Visual, Performance to the new
profiler system.

Port SceneDebugger and RemoteDebugger to the new capture system.
The LocalDebugger also uses the new profiler system for scripts
profiling.
2020-03-08 12:36:39 +01:00

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/*************************************************************************/
/* os_unix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "os_unix.h"
#ifdef UNIX_ENABLED
#include "core/debugger/engine_debugger.h"
#include "core/debugger/script_debugger.h"
#include "core/os/thread_dummy.h"
#include "core/project_settings.h"
#include "drivers/unix/dir_access_unix.h"
#include "drivers/unix/file_access_unix.h"
#include "drivers/unix/net_socket_posix.h"
#include "drivers/unix/rw_lock_posix.h"
#include "drivers/unix/thread_posix.h"
#include "servers/visual_server.h"
#ifdef __APPLE__
#include <mach-o/dyld.h>
#include <mach/mach_time.h>
#endif
#if defined(__FreeBSD__) || defined(__OpenBSD__)
#include <sys/param.h>
#include <sys/sysctl.h>
#endif
#include <assert.h>
#include <dlfcn.h>
#include <errno.h>
#include <poll.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <unistd.h>
/// Clock Setup function (used by get_ticks_usec)
static uint64_t _clock_start = 0;
#if defined(__APPLE__)
static double _clock_scale = 0;
static void _setup_clock() {
mach_timebase_info_data_t info;
kern_return_t ret = mach_timebase_info(&info);
ERR_FAIL_COND_MSG(ret != 0, "OS CLOCK IS NOT WORKING!");
_clock_scale = ((double)info.numer / (double)info.denom) / 1000.0;
_clock_start = mach_absolute_time() * _clock_scale;
}
#else
#if defined(CLOCK_MONOTONIC_RAW) && !defined(JAVASCRIPT_ENABLED) // This is a better clock on Linux.
#define GODOT_CLOCK CLOCK_MONOTONIC_RAW
#else
#define GODOT_CLOCK CLOCK_MONOTONIC
#endif
static void _setup_clock() {
struct timespec tv_now = { 0, 0 };
ERR_FAIL_COND_MSG(clock_gettime(GODOT_CLOCK, &tv_now) != 0, "OS CLOCK IS NOT WORKING!");
_clock_start = ((uint64_t)tv_now.tv_nsec / 1000L) + (uint64_t)tv_now.tv_sec * 1000000L;
}
#endif
void OS_Unix::debug_break() {
assert(false);
};
static void handle_interrupt(int sig) {
if (!EngineDebugger::is_active())
return;
EngineDebugger::get_script_debugger()->set_depth(-1);
EngineDebugger::get_script_debugger()->set_lines_left(1);
}
void OS_Unix::initialize_debugging() {
if (EngineDebugger::is_active()) {
struct sigaction action;
memset(&action, 0, sizeof(action));
action.sa_handler = handle_interrupt;
sigaction(SIGINT, &action, NULL);
}
}
int OS_Unix::unix_initialize_audio(int p_audio_driver) {
return 0;
}
void OS_Unix::initialize_core() {
#ifdef NO_THREADS
ThreadDummy::make_default();
RWLockDummy::make_default();
#else
ThreadPosix::make_default();
RWLockPosix::make_default();
#endif
FileAccess::make_default<FileAccessUnix>(FileAccess::ACCESS_RESOURCES);
FileAccess::make_default<FileAccessUnix>(FileAccess::ACCESS_USERDATA);
FileAccess::make_default<FileAccessUnix>(FileAccess::ACCESS_FILESYSTEM);
//FileAccessBufferedFA<FileAccessUnix>::make_default();
DirAccess::make_default<DirAccessUnix>(DirAccess::ACCESS_RESOURCES);
DirAccess::make_default<DirAccessUnix>(DirAccess::ACCESS_USERDATA);
DirAccess::make_default<DirAccessUnix>(DirAccess::ACCESS_FILESYSTEM);
#ifndef NO_NETWORK
NetSocketPosix::make_default();
IP_Unix::make_default();
#endif
_setup_clock();
}
void OS_Unix::finalize_core() {
NetSocketPosix::cleanup();
}
void OS_Unix::alert(const String &p_alert, const String &p_title) {
fprintf(stderr, "ERROR: %s\n", p_alert.utf8().get_data());
}
String OS_Unix::get_stdin_string(bool p_block) {
if (p_block) {
char buff[1024];
String ret = stdin_buf + fgets(buff, 1024, stdin);
stdin_buf = "";
return ret;
}
return "";
}
String OS_Unix::get_name() const {
return "Unix";
}
uint64_t OS_Unix::get_unix_time() const {
return time(NULL);
};
uint64_t OS_Unix::get_system_time_secs() const {
struct timeval tv_now;
gettimeofday(&tv_now, NULL);
return uint64_t(tv_now.tv_sec);
}
uint64_t OS_Unix::get_system_time_msecs() const {
struct timeval tv_now;
gettimeofday(&tv_now, NULL);
return uint64_t(tv_now.tv_sec) * 1000 + uint64_t(tv_now.tv_usec) / 1000;
}
OS::Date OS_Unix::get_date(bool utc) const {
time_t t = time(NULL);
struct tm *lt;
if (utc)
lt = gmtime(&t);
else
lt = localtime(&t);
Date ret;
ret.year = 1900 + lt->tm_year;
// Index starting at 1 to match OS_Unix::get_date
// and Windows SYSTEMTIME and tm_mon follows the typical structure
// of 0-11, noted here: http://www.cplusplus.com/reference/ctime/tm/
ret.month = (Month)(lt->tm_mon + 1);
ret.day = lt->tm_mday;
ret.weekday = (Weekday)lt->tm_wday;
ret.dst = lt->tm_isdst;
return ret;
}
OS::Time OS_Unix::get_time(bool utc) const {
time_t t = time(NULL);
struct tm *lt;
if (utc)
lt = gmtime(&t);
else
lt = localtime(&t);
Time ret;
ret.hour = lt->tm_hour;
ret.min = lt->tm_min;
ret.sec = lt->tm_sec;
get_time_zone_info();
return ret;
}
OS::TimeZoneInfo OS_Unix::get_time_zone_info() const {
time_t t = time(NULL);
struct tm *lt = localtime(&t);
char name[16];
strftime(name, 16, "%Z", lt);
name[15] = 0;
TimeZoneInfo ret;
ret.name = name;
char bias_buf[16];
strftime(bias_buf, 16, "%z", lt);
int bias;
bias_buf[15] = 0;
sscanf(bias_buf, "%d", &bias);
// convert from ISO 8601 (1 minute=1, 1 hour=100) to minutes
int hour = (int)bias / 100;
int minutes = bias % 100;
if (bias < 0)
ret.bias = hour * 60 - minutes;
else
ret.bias = hour * 60 + minutes;
return ret;
}
void OS_Unix::delay_usec(uint32_t p_usec) const {
struct timespec rem = { static_cast<time_t>(p_usec / 1000000), (static_cast<long>(p_usec) % 1000000) * 1000 };
while (nanosleep(&rem, &rem) == EINTR) {
}
}
uint64_t OS_Unix::get_ticks_usec() const {
#if defined(__APPLE__)
uint64_t longtime = mach_absolute_time() * _clock_scale;
#else
// Unchecked return. Static analyzers might complain.
// If _setup_clock() succeeded, we assume clock_gettime() works.
struct timespec tv_now = { 0, 0 };
clock_gettime(GODOT_CLOCK, &tv_now);
uint64_t longtime = ((uint64_t)tv_now.tv_nsec / 1000L) + (uint64_t)tv_now.tv_sec * 1000000L;
#endif
longtime -= _clock_start;
return longtime;
}
Error OS_Unix::execute(const String &p_path, const List<String> &p_arguments, bool p_blocking, ProcessID *r_child_id, String *r_pipe, int *r_exitcode, bool read_stderr, Mutex *p_pipe_mutex) {
#ifdef __EMSCRIPTEN__
// Don't compile this code at all to avoid undefined references.
// Actual virtual call goes to OS_JavaScript.
ERR_FAIL_V(ERR_BUG);
#else
if (p_blocking && r_pipe) {
String argss;
argss = "\"" + p_path + "\"";
for (int i = 0; i < p_arguments.size(); i++) {
argss += String(" \"") + p_arguments[i] + "\"";
}
if (read_stderr) {
argss += " 2>&1"; // Read stderr too
} else {
argss += " 2>/dev/null"; //silence stderr
}
FILE *f = popen(argss.utf8().get_data(), "r");
ERR_FAIL_COND_V_MSG(!f, ERR_CANT_OPEN, "Cannot pipe stream from process running with following arguments '" + argss + "'.");
char buf[65535];
while (fgets(buf, 65535, f)) {
if (p_pipe_mutex) {
p_pipe_mutex->lock();
}
(*r_pipe) += String::utf8(buf);
if (p_pipe_mutex) {
p_pipe_mutex->unlock();
}
}
int rv = pclose(f);
if (r_exitcode)
*r_exitcode = WEXITSTATUS(rv);
return OK;
}
pid_t pid = fork();
ERR_FAIL_COND_V(pid < 0, ERR_CANT_FORK);
if (pid == 0) {
// is child
if (!p_blocking) {
// For non blocking calls, create a new session-ID so parent won't wait for it.
// This ensures the process won't go zombie at end.
setsid();
}
Vector<CharString> cs;
cs.push_back(p_path.utf8());
for (int i = 0; i < p_arguments.size(); i++)
cs.push_back(p_arguments[i].utf8());
Vector<char *> args;
for (int i = 0; i < cs.size(); i++)
args.push_back((char *)cs[i].get_data());
args.push_back(0);
execvp(p_path.utf8().get_data(), &args[0]);
// still alive? something failed..
fprintf(stderr, "**ERROR** OS_Unix::execute - Could not create child process while executing: %s\n", p_path.utf8().get_data());
abort();
}
if (p_blocking) {
int status;
waitpid(pid, &status, 0);
if (r_exitcode)
*r_exitcode = WEXITSTATUS(status);
} else {
if (r_child_id)
*r_child_id = pid;
}
return OK;
#endif
}
Error OS_Unix::kill(const ProcessID &p_pid) {
int ret = ::kill(p_pid, SIGKILL);
if (!ret) {
//avoid zombie process
int st;
::waitpid(p_pid, &st, 0);
}
return ret ? ERR_INVALID_PARAMETER : OK;
}
int OS_Unix::get_process_id() const {
return getpid();
};
bool OS_Unix::has_environment(const String &p_var) const {
return getenv(p_var.utf8().get_data()) != NULL;
}
String OS_Unix::get_locale() const {
if (!has_environment("LANG"))
return "en";
String locale = get_environment("LANG");
int tp = locale.find(".");
if (tp != -1)
locale = locale.substr(0, tp);
return locale;
}
Error OS_Unix::open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path) {
String path = p_path;
if (FileAccess::exists(path) && path.is_rel_path()) {
// dlopen expects a slash, in this case a leading ./ for it to be interpreted as a relative path,
// otherwise it will end up searching various system directories for the lib instead and finally failing.
path = "./" + path;
}
if (!FileAccess::exists(path)) {
//this code exists so gdnative can load .so files from within the executable path
path = get_executable_path().get_base_dir().plus_file(p_path.get_file());
}
if (!FileAccess::exists(path)) {
//this code exists so gdnative can load .so files from a standard unix location
path = get_executable_path().get_base_dir().plus_file("../lib").plus_file(p_path.get_file());
}
p_library_handle = dlopen(path.utf8().get_data(), RTLD_NOW);
ERR_FAIL_COND_V_MSG(!p_library_handle, ERR_CANT_OPEN, "Can't open dynamic library: " + p_path + ". Error: " + dlerror());
return OK;
}
Error OS_Unix::close_dynamic_library(void *p_library_handle) {
if (dlclose(p_library_handle)) {
return FAILED;
}
return OK;
}
Error OS_Unix::get_dynamic_library_symbol_handle(void *p_library_handle, const String p_name, void *&p_symbol_handle, bool p_optional) {
const char *error;
dlerror(); // Clear existing errors
p_symbol_handle = dlsym(p_library_handle, p_name.utf8().get_data());
error = dlerror();
if (error != NULL) {
ERR_FAIL_COND_V_MSG(!p_optional, ERR_CANT_RESOLVE, "Can't resolve symbol " + p_name + ". Error: " + error + ".");
return ERR_CANT_RESOLVE;
}
return OK;
}
Error OS_Unix::set_cwd(const String &p_cwd) {
if (chdir(p_cwd.utf8().get_data()) != 0)
return ERR_CANT_OPEN;
return OK;
}
String OS_Unix::get_environment(const String &p_var) const {
if (getenv(p_var.utf8().get_data()))
return getenv(p_var.utf8().get_data());
return "";
}
bool OS_Unix::set_environment(const String &p_var, const String &p_value) const {
return setenv(p_var.utf8().get_data(), p_value.utf8().get_data(), /* overwrite: */ true) == 0;
}
int OS_Unix::get_processor_count() const {
return sysconf(_SC_NPROCESSORS_CONF);
}
String OS_Unix::get_user_data_dir() const {
String appname = get_safe_dir_name(ProjectSettings::get_singleton()->get("application/config/name"));
if (appname != "") {
bool use_custom_dir = ProjectSettings::get_singleton()->get("application/config/use_custom_user_dir");
if (use_custom_dir) {
String custom_dir = get_safe_dir_name(ProjectSettings::get_singleton()->get("application/config/custom_user_dir_name"), true);
if (custom_dir == "") {
custom_dir = appname;
}
return get_data_path().plus_file(custom_dir);
} else {
return get_data_path().plus_file(get_godot_dir_name()).plus_file("app_userdata").plus_file(appname);
}
}
return ProjectSettings::get_singleton()->get_resource_path();
}
String OS_Unix::get_executable_path() const {
#ifdef __linux__
//fix for running from a symlink
char buf[256];
memset(buf, 0, 256);
ssize_t len = readlink("/proc/self/exe", buf, sizeof(buf));
String b;
if (len > 0) {
b.parse_utf8(buf, len);
}
if (b == "") {
WARN_PRINT("Couldn't get executable path from /proc/self/exe, using argv[0]");
return OS::get_executable_path();
}
return b;
#elif defined(__OpenBSD__)
char resolved_path[MAXPATHLEN];
realpath(OS::get_executable_path().utf8().get_data(), resolved_path);
return String(resolved_path);
#elif defined(__FreeBSD__)
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
char buf[MAXPATHLEN];
size_t len = sizeof(buf);
if (sysctl(mib, 4, buf, &len, NULL, 0) != 0) {
WARN_PRINT("Couldn't get executable path from sysctl");
return OS::get_executable_path();
}
String b;
b.parse_utf8(buf);
return b;
#elif defined(__APPLE__)
char temp_path[1];
uint32_t buff_size = 1;
_NSGetExecutablePath(temp_path, &buff_size);
char *resolved_path = new char[buff_size + 1];
if (_NSGetExecutablePath(resolved_path, &buff_size) == 1)
WARN_PRINT("MAXPATHLEN is too small");
String path(resolved_path);
delete[] resolved_path;
return path;
#else
ERR_PRINT("Warning, don't know how to obtain executable path on this OS! Please override this function properly.");
return OS::get_executable_path();
#endif
}
void UnixTerminalLogger::log_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, ErrorType p_type) {
if (!should_log(true)) {
return;
}
const char *err_details;
if (p_rationale && p_rationale[0])
err_details = p_rationale;
else
err_details = p_code;
// Disable color codes if stdout is not a TTY.
// This prevents Godot from writing ANSI escape codes when redirecting
// stdout and stderr to a file.
const bool tty = isatty(fileno(stdout));
const char *gray = tty ? "\E[0;90m" : "";
const char *red = tty ? "\E[0;91m" : "";
const char *red_bold = tty ? "\E[1;31m" : "";
const char *yellow = tty ? "\E[0;93m" : "";
const char *yellow_bold = tty ? "\E[1;33m" : "";
const char *magenta = tty ? "\E[0;95m" : "";
const char *magenta_bold = tty ? "\E[1;35m" : "";
const char *cyan = tty ? "\E[0;96m" : "";
const char *cyan_bold = tty ? "\E[1;36m" : "";
const char *reset = tty ? "\E[0m" : "";
switch (p_type) {
case ERR_WARNING:
logf_error("%sWARNING:%s %s\n", yellow_bold, yellow, err_details);
logf_error("%s at: %s (%s:%i)%s\n", gray, p_function, p_file, p_line, reset);
break;
case ERR_SCRIPT:
logf_error("%sSCRIPT ERROR:%s %s\n", magenta_bold, magenta, err_details);
logf_error("%s at: %s (%s:%i)%s\n", gray, p_function, p_file, p_line, reset);
break;
case ERR_SHADER:
logf_error("%sSHADER ERROR:%s %s\n", cyan_bold, cyan, err_details);
logf_error("%s at: %s (%s:%i)%s\n", gray, p_function, p_file, p_line, reset);
break;
case ERR_ERROR:
default:
logf_error("%sERROR:%s %s\n", red_bold, red, err_details);
logf_error("%s at: %s (%s:%i)%s\n", gray, p_function, p_file, p_line, reset);
break;
}
}
UnixTerminalLogger::~UnixTerminalLogger() {}
OS_Unix::OS_Unix() {
Vector<Logger *> loggers;
loggers.push_back(memnew(UnixTerminalLogger));
_set_logger(memnew(CompositeLogger(loggers)));
}
#endif
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