4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include <sys/syscall.h>
30 // glibc >= 2.30 provides gettid() in unistd
31 #if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30)
32 static inline int gettid() { return syscall(SYS_gettid, 0, 0, 0); }
35 // The thread does not autodelete by default.
36 // If autodelete is 1 the thread autodeletes.
37 // If it's synchronous the deletion occurs in join().
38 // If it's asynchronous the deletion occurs in entrypoint.
43 static void* entrypoint(void *parameters);
46 virtual void run() = 0;
48 Thread(int synchronous = 0, int realtime = 0, int autodelete = 0);
51 int cancel(); // end this thread
52 int join(); // join this thread
53 int suspend_thread(); // suspend this thread
54 int continue_thread(); // continue this thread
55 void exit_thread(); // exit this thread
58 int get_cancel_enabled();
59 bool exists() { return tid != ((pthread_t)-1); }
60 bool running() { return exists() && !finished; }
62 int get_synchronous();
63 int set_synchronous(int value);
65 int set_realtime(int value = 1);
67 int set_autodelete(int value);
68 // Return realtime variable
69 // Return 1 if querying the kernel returned a realtime policy
70 static bool calculate_realtime();
71 unsigned long get_tid();
72 static pthread_t get_self() { return pthread_self(); }
73 static void yield() { sched_yield(); }
74 static void dump_threads(FILE *fp=stdout);
77 bool synchronous; // force join() to end
78 bool realtime; // schedule realtime
79 bool autodelete; // autodelete when run() finishes
81 bool cancel_enabled, cancelled;