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 #include "../../thread_info.h"
   6
   7 #include <signal.h>
   8
   9 namespace caspar {
  10
  11 struct floating_point_exception : virtual caspar_exception {};
  12 struct segmentation_fault_exception : virtual caspar_exception {};
  13
  14 void catch_fpe(int signum)
  15 {
  16         try
  17         {
  18                 CASPAR_THROW_EXCEPTION(floating_point_exception());
  19         }
  20         catch (...)
  21         {
  22                 CASPAR_LOG_CURRENT_EXCEPTION();
  23                 throw;
  24         }
  25 }
  26
  27 void catch_segv(int signum)
  28 {
  29         try
  30         {
  31                 CASPAR_THROW_EXCEPTION(segmentation_fault_exception());
  32         }
  33         catch (...)
  34         {
  35                 CASPAR_LOG_CURRENT_EXCEPTION();
  36                 throw;
  37         }
  38 }
  39
  40 void do_install_handlers()
  41 {
  42         signal(SIGFPE, catch_fpe);
  43         signal(SIGSEGV, catch_segv);
  44 }
  45
  46 void install_gpf_handler()
  47 {
  48         ensure_gpf_handler_installed_for_thread();
  49 }
  50
  51 void ensure_gpf_handler_installed_for_thread(
  52                 const char* thread_description)
  53 {
  54         static auto install = []() { do_install_handlers(); return 0; } ();
  55
  56         if (thread_description)
  57                 get_thread_info().name = thread_description;
  58 }
  59
  60 }