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comparison src/os/posix/vm/os_posix.hpp @ 11151:5e3b6f79d280

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8020701: Avoid crashes in WatcherThread Reviewed-by: acorn, dcubed, dsimms
author rbackman
date Wed, 17 Jul 2013 13:48:15 +0200
parents b9a9ed0f8eeb
children de6a9e811145 f42f2e2a1518
comparison
equal deleted inserted replaced
11150:c29568b733d2 11151:5e3b6f79d280
35 static void print_load_average(outputStream* st); 35 static void print_load_average(outputStream* st);
36 36
37 37
38 }; 38 };
39 39
40 /*
41 * Crash protection for the watcher thread. Wrap the callback
42 * with a sigsetjmp and in case of a SIGSEGV/SIGBUS we siglongjmp
43 * back.
44 * To be able to use this - don't take locks, don't rely on destructors,
45 * don't make OS library calls, don't allocate memory, don't print,
46 * don't call code that could leave the heap / memory in an inconsistent state,
47 * or anything else where we are not in control if we suddenly jump out.
48 */
49 class WatcherThreadCrashProtection : public StackObj {
50 public:
51 WatcherThreadCrashProtection();
52 bool call(os::CrashProtectionCallback& cb);
53
54 static void check_crash_protection(int signal, Thread* thread);
55 private:
56 void restore();
57 sigjmp_buf _jmpbuf;
58 };
40 59
41 #endif 60 #endif