mirror of
https://github.com/minetest/minetest.git
synced 2024-11-30 11:33:44 +01:00
492 lines
10 KiB
C++
492 lines
10 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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Random portability stuff
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See comments in porting.h
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*/
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#if defined(linux)
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#include <unistd.h>
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#elif defined(__APPLE__)
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#include <unistd.h>
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#include <mach-o/dyld.h>
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#elif defined(__FreeBSD__)
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#endif
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#include "porting.h"
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#include "config.h"
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#include "debug.h"
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#include "filesys.h"
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#include "log.h"
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#include "util/string.h"
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#include <list>
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#ifdef __APPLE__
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#include "CoreFoundation/CoreFoundation.h"
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#endif
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namespace porting
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{
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/*
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Signal handler (grabs Ctrl-C on POSIX systems)
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*/
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bool g_killed = false;
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bool * signal_handler_killstatus(void)
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{
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return &g_killed;
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}
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#if !defined(_WIN32) // POSIX
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#include <signal.h>
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void sigint_handler(int sig)
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{
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if(g_killed == false)
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{
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dstream<<DTIME<<"INFO: sigint_handler(): "
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<<"Ctrl-C pressed, shutting down."<<std::endl;
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// Comment out for less clutter when testing scripts
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/*dstream<<DTIME<<"INFO: sigint_handler(): "
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<<"Printing debug stacks"<<std::endl;
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debug_stacks_print();*/
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g_killed = true;
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}
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else
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{
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(void)signal(SIGINT, SIG_DFL);
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}
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}
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void signal_handler_init(void)
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{
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(void)signal(SIGINT, sigint_handler);
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}
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#else // _WIN32
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#include <signal.h>
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BOOL WINAPI event_handler(DWORD sig)
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{
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switch(sig)
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{
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case CTRL_C_EVENT:
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case CTRL_CLOSE_EVENT:
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case CTRL_LOGOFF_EVENT:
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case CTRL_SHUTDOWN_EVENT:
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if(g_killed == false)
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{
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dstream<<DTIME<<"INFO: event_handler(): "
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<<"Ctrl+C, Close Event, Logoff Event or Shutdown Event, shutting down."<<std::endl;
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// Comment out for less clutter when testing scripts
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/*dstream<<DTIME<<"INFO: event_handler(): "
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<<"Printing debug stacks"<<std::endl;
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debug_stacks_print();*/
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g_killed = true;
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}
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else
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{
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(void)signal(SIGINT, SIG_DFL);
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}
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break;
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case CTRL_BREAK_EVENT:
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break;
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}
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return TRUE;
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}
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void signal_handler_init(void)
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{
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SetConsoleCtrlHandler( (PHANDLER_ROUTINE)event_handler,TRUE);
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}
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#endif
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/*
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Multithreading support
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*/
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int getNumberOfProcessors() {
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#if defined(_SC_NPROCESSORS_ONLN)
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return sysconf(_SC_NPROCESSORS_ONLN);
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#elif defined(__FreeBSD__) || defined(__APPLE__)
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unsigned int len, count;
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len = sizeof(count);
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return sysctlbyname("hw.ncpu", &count, &len, NULL, 0);
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#elif defined(_GNU_SOURCE)
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return get_nprocs();
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#elif defined(_WIN32)
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SYSTEM_INFO sysinfo;
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GetSystemInfo(&sysinfo);
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return sysinfo.dwNumberOfProcessors;
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#elif defined(PTW32_VERSION) || defined(__hpux)
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return pthread_num_processors_np();
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#else
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return 1;
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#endif
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}
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bool threadBindToProcessor(threadid_t tid, int pnumber) {
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#if defined(_WIN32)
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HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, 0, tid);
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if (!hThread)
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return false;
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bool success = SetThreadAffinityMask(hThread, 1 << pnumber) != 0;
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CloseHandle(hThread);
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return success;
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#elif (defined(__FreeBSD__) && (__FreeBSD_version >= 702106)) \
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|| defined(__linux) || defined(linux)
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cpu_set_t cpuset;
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CPU_ZERO(&cpuset);
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CPU_SET(pnumber, &cpuset);
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return pthread_setaffinity_np(tid, sizeof(cpuset), &cpuset) == 0;
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#elif defined(__sun) || defined(sun)
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return processor_bind(P_LWPID, MAKE_LWPID_PTHREAD(tid),
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pnumber, NULL) == 0;
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#elif defined(_AIX)
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return bindprocessor(BINDTHREAD, (tid_t)tid, pnumber) == 0;
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#elif defined(__hpux) || defined(hpux)
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pthread_spu_t answer;
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return pthread_processor_bind_np(PTHREAD_BIND_ADVISORY_NP,
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&answer, pnumber, tid) == 0;
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#elif defined(__APPLE__)
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struct thread_affinity_policy tapol;
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thread_port_t threadport = pthread_mach_thread_np(tid);
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tapol.affinity_tag = pnumber + 1;
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return thread_policy_set(threadport, THREAD_AFFINITY_POLICY,
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(thread_policy_t)&tapol, THREAD_AFFINITY_POLICY_COUNT) == KERN_SUCCESS;
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#else
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return false;
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#endif
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}
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bool threadSetPriority(threadid_t tid, int prio) {
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#if defined(_WIN32)
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HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, 0, tid);
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if (!hThread)
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return false;
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bool success = SetThreadPriority(hThread, prio) != 0;
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CloseHandle(hThread);
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return success;
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#else
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struct sched_param sparam;
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int policy;
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if (pthread_getschedparam(tid, &policy, &sparam) != 0)
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return false;
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int min = sched_get_priority_min(policy);
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int max = sched_get_priority_max(policy);
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sparam.sched_priority = min + prio * (max - min) / THREAD_PRIORITY_HIGHEST;
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return pthread_setschedparam(tid, policy, &sparam) == 0;
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#endif
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}
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/*
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Path mangler
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*/
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// Default to RUN_IN_PLACE style relative paths
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std::string path_share = "..";
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std::string path_user = "..";
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std::string getDataPath(const char *subpath)
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{
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return path_share + DIR_DELIM + subpath;
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}
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void pathRemoveFile(char *path, char delim)
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{
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// Remove filename and path delimiter
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int i;
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for(i = strlen(path)-1; i>=0; i--)
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{
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if(path[i] == delim)
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break;
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}
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path[i] = 0;
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}
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bool detectMSVCBuildDir(char *c_path)
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{
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std::string path(c_path);
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const char *ends[] = {"bin\\Release", "bin\\Build", NULL};
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return (removeStringEnd(path, ends) != "");
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}
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void initializePaths()
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{
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#if RUN_IN_PLACE
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/*
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Use relative paths if RUN_IN_PLACE
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*/
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infostream<<"Using relative paths (RUN_IN_PLACE)"<<std::endl;
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/*
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Windows
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*/
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#if defined(_WIN32)
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const DWORD buflen = 1000;
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char buf[buflen];
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DWORD len;
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// Find path of executable and set path_share relative to it
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len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
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assert(len < buflen);
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pathRemoveFile(buf, '\\');
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if(detectMSVCBuildDir(buf)){
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infostream<<"MSVC build directory detected"<<std::endl;
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path_share = std::string(buf) + "\\..\\..";
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path_user = std::string(buf) + "\\..\\..";
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}
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else{
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path_share = std::string(buf) + "\\..";
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path_user = std::string(buf) + "\\..";
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}
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/*
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Linux
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*/
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#elif defined(linux)
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char buf[BUFSIZ];
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memset(buf, 0, BUFSIZ);
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// Get path to executable
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assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);
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pathRemoveFile(buf, '/');
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path_share = std::string(buf) + "/..";
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path_user = std::string(buf) + "/..";
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/*
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OS X
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*/
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#elif defined(__APPLE__)
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//https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/dyld.3.html
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//TODO: Test this code
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char buf[BUFSIZ];
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uint32_t len = sizeof(buf);
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assert(_NSGetExecutablePath(buf, &len) != -1);
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pathRemoveFile(buf, '/');
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path_share = std::string(buf) + "/..";
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path_user = std::string(buf) + "/..";
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/*
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FreeBSD
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*/
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#elif defined(__FreeBSD__)
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int mib[4];
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char buf[BUFSIZ];
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size_t len = sizeof(buf);
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mib[0] = CTL_KERN;
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mib[1] = KERN_PROC;
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mib[2] = KERN_PROC_PATHNAME;
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mib[3] = -1;
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assert(sysctl(mib, 4, buf, &len, NULL, 0) != -1);
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pathRemoveFile(buf, '/');
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path_share = std::string(buf) + "/..";
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path_user = std::string(buf) + "/..";
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#else
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//TODO: Get path of executable. This assumes working directory is bin/
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dstream<<"WARNING: Relative path not properly supported on this platform"
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<<std::endl;
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path_share = std::string("..");
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path_user = std::string("..");
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#endif
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#else // RUN_IN_PLACE
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/*
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Use platform-specific paths otherwise
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*/
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infostream<<"Using system-wide paths (NOT RUN_IN_PLACE)"<<std::endl;
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/*
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Windows
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*/
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#if defined(_WIN32)
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const DWORD buflen = 1000;
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char buf[buflen];
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DWORD len;
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// Find path of executable and set path_share relative to it
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len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
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assert(len < buflen);
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pathRemoveFile(buf, '\\');
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// Use ".\bin\.."
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path_share = std::string(buf) + "\\..";
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// Use "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
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len = GetEnvironmentVariable("APPDATA", buf, buflen);
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assert(len < buflen);
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path_user = std::string(buf) + DIR_DELIM + PROJECT_NAME;
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/*
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Linux
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*/
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#elif defined(linux)
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// Get path to executable
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std::string bindir = "";
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{
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char buf[BUFSIZ];
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memset(buf, 0, BUFSIZ);
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assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);
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pathRemoveFile(buf, '/');
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bindir = buf;
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}
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// Find share directory from these.
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// It is identified by containing the subdirectory "builtin".
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std::list<std::string> trylist;
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std::string static_sharedir = STATIC_SHAREDIR;
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if(static_sharedir != "" && static_sharedir != ".")
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trylist.push_back(static_sharedir);
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trylist.push_back(bindir + "/../share/" + PROJECT_NAME);
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trylist.push_back(bindir + "/..");
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for(std::list<std::string>::const_iterator i = trylist.begin();
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i != trylist.end(); i++)
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{
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const std::string &trypath = *i;
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if(!fs::PathExists(trypath) || !fs::PathExists(trypath + "/builtin")){
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dstream<<"WARNING: system-wide share not found at \""
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<<trypath<<"\""<<std::endl;
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continue;
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}
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// Warn if was not the first alternative
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if(i != trylist.begin()){
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dstream<<"WARNING: system-wide share found at \""
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<<trypath<<"\""<<std::endl;
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}
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path_share = trypath;
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break;
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}
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path_user = std::string(getenv("HOME")) + "/." + PROJECT_NAME;
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/*
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OS X
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*/
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#elif defined(__APPLE__)
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// Code based on
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// http://stackoverflow.com/questions/516200/relative-paths-not-working-in-xcode-c
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CFBundleRef main_bundle = CFBundleGetMainBundle();
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CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
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char path[PATH_MAX];
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if(CFURLGetFileSystemRepresentation(resources_url, TRUE, (UInt8 *)path, PATH_MAX))
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{
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dstream<<"Bundle resource path: "<<path<<std::endl;
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//chdir(path);
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path_share = std::string(path) + "/share";
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}
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else
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{
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// error!
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dstream<<"WARNING: Could not determine bundle resource path"<<std::endl;
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}
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CFRelease(resources_url);
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path_user = std::string(getenv("HOME")) + "/Library/Application Support/" + PROJECT_NAME;
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#elif defined(__FreeBSD__)
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path_share = STATIC_SHAREDIR;
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path_user = std::string(getenv("HOME")) + "/." + PROJECT_NAME;
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#endif
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#endif // RUN_IN_PLACE
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}
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} //namespace porting
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