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virtualx-engine/drivers/unix/os_unix.cpp
Rémi Verschelde c7bc44d5ad Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
2017-01-01 22:03:33 +01:00

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/*************************************************************************/
/* os_unix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "memory_pool_static_malloc.h"
#include "os/memory_pool_dynamic_static.h"
#include "thread_posix.h"
#include "semaphore_posix.h"
#include "mutex_posix.h"
#include "core/os/thread_dummy.h"
//#include "core/io/file_access_buffered_fa.h"
#include "file_access_unix.h"
#include "dir_access_unix.h"
#include "tcp_server_posix.h"
#include "stream_peer_tcp_posix.h"
#include "packet_peer_udp_posix.h"
#ifdef __APPLE__
#include <mach-o/dyld.h>
#endif
#ifdef __FreeBSD__
#include <sys/param.h>
#endif
#include <stdarg.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <poll.h>
#include <errno.h>
#include <assert.h>
#include "globals.h"
extern bool _print_error_enabled;
void OS_Unix::print_error(const char* p_function,const char* p_file,int p_line,const char *p_code,const char*p_rationale,ErrorType p_type) {
if (!_print_error_enabled)
return;
const char* err_details;
if (p_rationale && p_rationale[0])
err_details=p_rationale;
else
err_details=p_code;
switch(p_type) {
case ERR_ERROR:
print("\E[1;31mERROR: %s: \E[0m\E[1m%s\n",p_function,err_details);
print("\E[0;31m At: %s:%i.\E[0m\n",p_file,p_line);
break;
case ERR_WARNING:
print("\E[1;33mWARNING: %s: \E[0m\E[1m%s\n",p_function,err_details);
print("\E[0;33m At: %s:%i.\E[0m\n",p_file,p_line);
break;
case ERR_SCRIPT:
print("\E[1;35mSCRIPT ERROR: %s: \E[0m\E[1m%s\n",p_function,err_details);
print("\E[0;35m At: %s:%i.\E[0m\n",p_file,p_line);
break;
}
}
void OS_Unix::debug_break() {
assert(false);
};
int OS_Unix::get_audio_driver_count() const {
return 1;
}
const char * OS_Unix::get_audio_driver_name(int p_driver) const {
return "dummy";
}
int OS_Unix::unix_initialize_audio(int p_audio_driver) {
return 0;
}
static MemoryPoolStaticMalloc *mempool_static=NULL;
static MemoryPoolDynamicStatic *mempool_dynamic=NULL;
void OS_Unix::initialize_core() {
#ifdef NO_PTHREADS
ThreadDummy::make_default();
SemaphoreDummy::make_default();
MutexDummy::make_default();
#else
ThreadPosix::make_default();
SemaphorePosix::make_default();
MutexPosix::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
TCPServerPosix::make_default();
StreamPeerTCPPosix::make_default();
PacketPeerUDPPosix::make_default();
IP_Unix::make_default();
#endif
mempool_static = new MemoryPoolStaticMalloc;
mempool_dynamic = memnew( MemoryPoolDynamicStatic );
ticks_start=0;
ticks_start=get_ticks_usec();
}
void OS_Unix::finalize_core() {
if (mempool_dynamic)
memdelete( mempool_dynamic );
delete mempool_static;
}
void OS_Unix::vprint(const char* p_format, va_list p_list,bool p_stder) {
if (p_stder) {
vfprintf(stderr,p_format,p_list);
fflush(stderr);
} else {
vprintf(p_format,p_list);
fflush(stdout);
}
}
void OS_Unix::print(const char *p_format, ... ) {
va_list argp;
va_start(argp, p_format);
vprintf(p_format, argp );
va_end(argp);
}
void OS_Unix::alert(const String& p_alert,const String& p_title) {
fprintf(stderr,"ERROR: %s\n",p_alert.utf8().get_data());
}
static int has_data(FILE* p_fd, int timeout_usec = 0) {
fd_set readset;
int fd = fileno(p_fd);
FD_ZERO(&readset);
FD_SET(fd, &readset);
timeval time;
time.tv_sec = 0;
time.tv_usec = timeout_usec;
int res = 0;//select(fd + 1, &readset, NULL, NULL, &time);
return res > 0;
};
String OS_Unix::get_stdin_string(bool p_block) {
String ret;
if (p_block) {
char buff[1024];
ret = stdin_buf + fgets(buff,1024,stdin);
stdin_buf = "";
return ret;
};
while (has_data(stdin)) {
char ch;
read(fileno(stdin), &ch, 1);
if (ch == '\n') {
ret = stdin_buf;
stdin_buf = "";
return ret;
} else {
char str[2] = { ch, 0 };
stdin_buf += str;
};
};
return "";
}
String OS_Unix::get_name() {
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);
//localtime(&tv_now.tv_usec);
//localtime((const long *)&tv_now.tv_usec);
return uint64_t(tv_now.tv_sec);
}
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 {
usleep(p_usec);
}
uint64_t OS_Unix::get_ticks_usec() const {
struct timeval tv_now;
gettimeofday(&tv_now,NULL);
uint64_t longtime = (uint64_t)tv_now.tv_usec + (uint64_t)tv_now.tv_sec*1000000L;
longtime-=ticks_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) {
if (p_blocking && r_pipe) {
String argss;
argss="\""+p_path+"\"";
for(int i=0;i<p_arguments.size();i++) {
argss+=String(" \"")+p_arguments[i]+"\"";
}
argss+=" 2>/dev/null"; //silence stderr
FILE* f=popen(argss.utf8().get_data(),"r");
ERR_FAIL_COND_V(!f,ERR_CANT_OPEN);
char buf[65535];
while(fgets(buf,65535,f)) {
(*r_pipe)+=buf;
}
int rv = pclose(f);
if (r_exitcode)
*r_exitcode=rv;
return OK;
}
pid_t pid = fork();
ERR_FAIL_COND_V(pid<0,ERR_CANT_FORK);
if (pid==0) {
// is child
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());// shitty C cast
args.push_back(0);
#ifdef __FreeBSD__
if(p_path.find("/")) {
// exec name contains path so use it
execv(p_path.utf8().get_data(),&args[0]);
}else{
// use program name and search through PATH to find it
execvp(getprogname(),&args[0]);
}
#else
execv(p_path.utf8().get_data(),&args[0]);
#endif
// 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;
}
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::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 "";
}
int OS_Unix::get_processor_count() const {
return sysconf(_SC_NPROCESSORS_CONF);
}
String OS_Unix::get_data_dir() const {
String an = get_safe_application_name();
if (an!="") {
if (has_environment("HOME")) {
bool use_godot = Globals::get_singleton()->get("application/use_shared_user_dir");
if (use_godot)
return get_environment("HOME")+"/.godot/app_userdata/"+an;
else
return get_environment("HOME")+"/."+an;
}
}
return Globals::get_singleton()->get_resource_path();
}
String OS_Unix::get_installed_templates_path() const {
String p=get_global_settings_path();
if (p!="")
return p+"/templates/";
else
return "";
}
String OS_Unix::get_executable_path() const {
#ifdef __linux__
//fix for running from a symlink
char buf[256];
memset(buf,0,256);
readlink("/proc/self/exe", buf, sizeof(buf));
String b;
b.parse_utf8(buf);
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(__FreeBSD__)
char resolved_path[MAXPATHLEN];
realpath(OS::get_executable_path().utf8().get_data(), resolved_path);
return String(resolved_path);
#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
}
#endif
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