git.sesse.net Git - casparcg/blob - common/os/linux/signal_handlers.cpp

   1 #include "../general_protection_fault.h"
   2
   3 #include "../../except.h"
   4 #include "../../log.h"
   5
   6 #include <signal.h>
   7
   8 namespace caspar {
   9
  10 struct floating_point_exception : virtual caspar_exception {};
  11 struct segmentation_fault_exception : virtual caspar_exception {};
  12
  13 void catch_fpe(int signum)
  14 {
  15         try
  16         {
  17                 CASPAR_THROW_EXCEPTION(floating_point_exception());
  18         }
  19         catch (...)
  20         {
  21                 CASPAR_LOG_CURRENT_EXCEPTION();
  22                 throw;
  23         }
  24 }
  25
  26 void catch_segv(int signum)
  27 {
  28         try
  29         {
  30                 CASPAR_THROW_EXCEPTION(segmentation_fault_exception());
  31         }
  32         catch (...)
  33         {
  34                 CASPAR_LOG_CURRENT_EXCEPTION();
  35                 throw;
  36         }
  37 }
  38
  39 void do_install_handlers()
  40 {
  41         signal(SIGFPE, catch_fpe);
  42         signal(SIGSEGV, catch_segv);
  43 }
  44
  45 void install_gpf_handler()
  46 {
  47         ensure_gpf_handler_installed_for_thread();
  48 }
  49
  50 void ensure_gpf_handler_installed_for_thread(
  51                 const char* thread_description)
  52 {
  53         static auto install = []() { do_install_handlers(); return 0; } ();
  54 }
  55
  56 }