1 | !--------------------------------------------------------------! |
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2 | ! 2012/04/20 (C) Gabriel Moreau |
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3 | ! Licence LGPLv2 or letter |
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4 | !--------------------------------------------------------------! |
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5 | |
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6 | |
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7 | |
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8 | module Signal_Checkpoint |
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9 | |
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10 | #ifdef __INTEL_COMPILER |
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11 | use IFPORT, only: signal |
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12 | #endif |
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13 | |
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14 | implicit none |
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15 | private |
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16 | |
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17 | integer, external :: signal_checkpoint_trap_callback_intel_ |
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18 | external :: signal_checkpoint_trap_callback_gfortran_ |
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19 | |
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20 | #ifdef __GNUC__ |
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21 | intrinsic signal |
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22 | #endif |
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23 | |
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24 | integer, parameter :: SIGUSR2 = 12 ! Signal USR2 |
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25 | |
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26 | integer, public :: INTERNAL_RECEIVED_COUNT_ = 0 ! Global Counter |
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27 | |
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28 | !public :: INTERNAL_RECEIVED_COUNT_ ! Public only for trap procedure |
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29 | |
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30 | public :: SIGUSR2 |
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31 | public :: signal_checkpoint_connect |
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32 | public :: signal_checkpoint_is_received |
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33 | public :: signal_checkpoint_received_times |
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34 | |
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35 | !--------------------------------------------------------------! |
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36 | contains |
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37 | !--------------------------------------------------------------! |
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38 | |
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39 | !--------------------------------------------------------------! |
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40 | subroutine signal_checkpoint_connect (SIG_NUM) |
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41 | integer, intent(in) :: SIG_NUM |
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42 | |
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43 | #ifdef __INTEL_COMPILER |
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44 | integer :: ERR |
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45 | |
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46 | ERR = signal(SIG_NUM, signal_checkpoint_trap_callback_intel_, -1) |
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47 | #endif |
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48 | #ifdef __GNUC__ |
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49 | call signal(SIG_NUM, signal_checkpoint_trap_callback_gfortran_) |
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50 | #endif |
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51 | |
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52 | end subroutine |
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53 | |
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54 | !--------------------------------------------------------------! |
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55 | function signal_checkpoint_is_received () result (IS_RECEIVED) |
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56 | logical :: IS_RECEIVED |
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57 | |
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58 | IS_RECEIVED = (INTERNAL_RECEIVED_COUNT_ > 0) |
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59 | end function |
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60 | |
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61 | !--------------------------------------------------------------! |
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62 | function signal_checkpoint_received_times () result (RECEIVED_TIMES) |
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63 | integer :: RECEIVED_TIMES |
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64 | |
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65 | RECEIVED_TIMES = INTERNAL_RECEIVED_COUNT_ |
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66 | end function |
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67 | |
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68 | !--------------------------------------------------------------! |
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69 | end module |
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70 | !--------------------------------------------------------------! |
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71 | |
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72 | |
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73 | !--------------------------------------------------------------! |
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74 | ! Internal trap procedure and function |
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75 | ! Must be external to be C compatible |
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76 | !--------------------------------------------------------------! |
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77 | |
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78 | subroutine signal_checkpoint_trap_callback_gfortran_ (SIG_NUM) |
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79 | use Signal_Checkpoint |
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80 | integer, intent(in) :: SIG_NUM |
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81 | |
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82 | INTERNAL_RECEIVED_COUNT_ = INTERNAL_RECEIVED_COUNT_ + 1 |
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83 | end subroutine |
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84 | |
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85 | function signal_checkpoint_trap_callback_intel_ (SIG_NUM) result (ONE) |
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86 | use Signal_Checkpoint |
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87 | integer, intent(in) :: SIG_NUM |
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88 | integer :: ONE |
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89 | |
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90 | INTERNAL_RECEIVED_COUNT_ = INTERNAL_RECEIVED_COUNT_ + 1 |
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91 | ONE = 1 |
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92 | end |
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