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godot/drivers/unix/os_unix.cpp
Rémi Verschelde d8223ffa75 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!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

533 lines
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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;
pid_t rpid = 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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