minetest.git - modified minetest for gpcfs purposes

	Commit message (Expand)	Author	Age
*	Implement proper font handling	sapier	2014-11-30

/* This file is a part of the JThread package, which contains some object- oriented thread wrappers for different thread implementations. Copyright (c) 2000-2006 Jori Liesenborgs (jori.liesenborgs@gmail.com) 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 "threading/thread.h" #include "threading/mutex_auto_lock.h" #include "log.h" #if __cplusplus >= 201103L #include <chrono> #else #define UNUSED(expr) do { (void)(expr); } while (0) # ifdef _WIN32 # ifndef _WIN32_WCE #include <process.h> # endif # else #include <ctime> #include <cassert> #include <cstdlib> #include <sys/time.h> // For getNumberOfProcessors #include <unistd.h> # if defined(__FreeBSD__) || defined(__APPLE__) #include <sys/types.h> #include <sys/sysctl.h> # elif defined(_GNU_SOURCE) #include <sys/sysinfo.h> # endif # endif #endif // For setName #if defined(linux) || defined(__linux) #include <sys/prctl.h> #elif defined(__FreeBSD__) || defined(__OpenBSD__) #include <pthread_np.h> #elif defined(_MSC_VER) struct THREADNAME_INFO { DWORD dwType; // Must be 0x1000 LPCSTR szName; // Pointer to name (in user addr space) DWORD dwThreadID; // Thread ID (-1=caller thread) DWORD dwFlags; // Reserved for future use, must be zero }; #endif // For bindToProcessor #if __FreeBSD_version >= 702106 typedef cpuset_t cpu_set_t; #elif defined(__linux) || defined(linux) #include <sched.h> #elif defined(__sun) || defined(sun) #include <sys/types.h> #include <sys/processor.h> #include <sys/procset.h> #elif defined(_AIX) #include <sys/processor.h> #elif defined(__APPLE__) #include <mach/mach_init.h> #include <mach/thread_act.h> #endif Thread::Thread(const std::string &name) : name(name), retval(NULL), request_stop(false), running(false) #if __cplusplus >= 201103L , thread(NULL) #elif !defined(_WIN32) , started(false) #endif {} void Thread::wait() { #if __cplusplus >= 201103L if (!thread || !thread->joinable()) return; thread->join(); #elif defined(_WIN32) if (!running) return; WaitForSingleObject(thread, INFINITE); #else // pthread void *status; if (!started) return; int ret = pthread_join(thread, &status); assert(!ret); UNUSED(ret); started = false; #endif } bool Thread::start() { if (running) return false; request_stop = false; #if __cplusplus >= 201103L MutexAutoLock l(continue_mutex); thread = new std::thread(theThread, this); #elif defined(_WIN32) MutexAutoLock l(continue_mutex); # ifdef _WIN32_WCE thread = CreateThread(NULL, 0, theThread, this, 0, &thread_id); # else thread = (HANDLE)_beginthreadex(NULL, 0, theThread, this, 0, &thread_id); # endif if (!thread) return false; #else int status; MutexAutoLock l(continue_mutex); status = pthread_create(&thread, NULL, theThread, this); if (status) return false; #endif #if __cplusplus < 201103L // Wait until running while (!running) { # ifdef _WIN32 Sleep(1); } # else struct timespec req, rem; req.tv_sec = 0; req.tv_nsec = 1000000; nanosleep(&req, &rem); } started = true; # endif #endif return true; } bool Thread::kill() { #ifdef _WIN32 if (!running) return false; TerminateThread(getThreadHandle(), 0); CloseHandle(getThreadHandle()); #else if (!running) { wait(); return false; } # ifdef __ANDROID__ pthread_kill(getThreadHandle(), SIGKILL); # else pthread_cancel(getThreadHandle()); # endif wait(); #endif #if __cplusplus >= 201103L delete thread; #endif running = false; return true; } bool Thread::isSameThread() { #if __cplusplus >= 201103L return thread->get_id() == std::this_thread::get_id(); #elif defined(_WIN32) return GetCurrentThreadId() == thread_id; #else return pthread_equal(pthread_self(), thread); #endif } #if __cplusplus >= 201103L void Thread::theThread(Thread *th) #elif defined(_WIN32_WCE) DWORD WINAPI Thread::theThread(void *param) #elif defined(_WIN32) UINT __stdcall Thread::theThread(void *param) #else void *Thread::theThread(void *param) #endif { #if __cplusplus < 201103L Thread *th = static_cast<Thread *>(param); #endif th->running = true; th->setName(); log_register_thread(th->name); th->retval = th->run(); log_deregister_thread(); th->running = false; #if __cplusplus < 201103L # ifdef _WIN32 CloseHandle(th->thread); # endif return NULL; #endif } void Thread::setName(const std::string &name) { #if defined(linux) || defined(__linux) /* It would be cleaner to do this with pthread_setname_np, * which was added to glibc in version 2.12, but some major * distributions are still runing 2.11 and previous versions. */ prctl(PR_SET_NAME, name.c_str()); #elif defined(__FreeBSD__) || defined(__OpenBSD__) pthread_set_name_np(pthread_self(), name.c_str()); #elif defined(__NetBSD__) pthread_setname_np(pthread_self(), name.c_str()); #elif defined(__APPLE__) pthread_setname_np(name.c_str()); #elif defined(_MSC_VER) // Windows itself doesn't support thread names, // but the MSVC debugger does... THREADNAME_INFO info; info.dwType = 0x1000; info.szName = name.c_str(); info.dwThreadID = -1; info.dwFlags = 0; __try { RaiseException(0x406D1388, 0, sizeof(info) / sizeof(DWORD), (ULONG_PTR *)&info); } __except (EXCEPTION_CONTINUE_EXECUTION) { } #elif defined(_WIN32) || defined(__GNU__) // These platforms are known to not support thread names. // Silently ignore the request. #else #warning "Unrecognized platform, thread names will not be available." #endif } unsigned int Thread::getNumberOfProcessors() { #if __cplusplus >= 201103L return std::thread::hardware_concurrency(); #elif defined(_SC_NPROCESSORS_ONLN) return sysconf(_SC_NPROCESSORS_ONLN); #elif defined(__FreeBSD__) || defined(__APPLE__) unsigned int len, count; len = sizeof(count); return sysctlbyname("hw.ncpu", &count, &len, NULL, 0); #elif defined(_GNU_SOURCE) return get_nprocs(); #elif defined(_WIN32) SYSTEM_INFO sysinfo; GetSystemInfo(&sysinfo); return sysinfo.dwNumberOfProcessors; #elif defined(PTW32_VERSION) || defined(__hpux) return pthread_num_processors_np(); #else return 1; #endif } bool Thread::bindToProcessor(unsigned int num) { #if defined(__ANDROID__) return false; #elif defined(_WIN32) return SetThreadAffinityMask(getThreadHandle(), 1 << num); #elif __FreeBSD_version >= 702106 || defined(__linux) || defined(linux) cpu_set_t cpuset; CPU_ZERO(&cpuset); CPU_SET(num, &cpuset); return pthread_setaffinity_np(getThreadHandle(), sizeof(cpuset), &cpuset) == 0; #elif defined(__sun) || defined(sun) return processor_bind(P_LWPID, MAKE_LWPID_PTHREAD(getThreadHandle()), num, NULL) == 0 #elif defined(_AIX) return bindprocessor(BINDTHREAD, (tid_t) getThreadHandle(), pnumber) == 0; #elif defined(__hpux) || defined(hpux) pthread_spu_t answer; return pthread_processor_bind_np(PTHREAD_BIND_ADVISORY_NP, &answer, num, getThreadHandle()) == 0; #elif defined(__APPLE__) struct thread_affinity_policy tapol; thread_port_t threadport = pthread_mach_thread_np(getThreadHandle()); tapol.affinity_tag = num + 1; return thread_policy_set(threadport, THREAD_AFFINITY_POLICY, (thread_policy_t)&tapol, THREAD_AFFINITY_POLICY_COUNT) == KERN_SUCCESS; #else return false; #endif } bool Thread::setPriority(int prio) { #if defined(_WIN32) return SetThreadPriority(getThreadHandle(), prio); #else struct sched_param sparam; int policy; if (pthread_getschedparam(getThreadHandle(), &policy, &sparam) != 0) return false; int min = sched_get_priority_min(policy); int max = sched_get_priority_max(policy); sparam.sched_priority = min + prio * (max - min) / THREAD_PRIORITY_HIGHEST; return pthread_setschedparam(getThreadHandle(), policy, &sparam) == 0; #endif }