OpenCoverage

nproc.c

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/coreutils/src/src/nproc.c

Source code

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Line Source Count

1 /* nproc - print the number of processors. -

3 -

4 This program is free software: you can redistribute it and/or modify -

5 it under the terms of the GNU General Public License as published by -

6 the Free Software Foundation, either version 3 of the License, or -

7 (at your option) any later version. -

8 -

9 This program is distributed in the hope that it will be useful, -

10 but WITHOUT ANY WARRANTY; without even the implied warranty of -

11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -

12 GNU General Public License for more details. -

13 -

14 You should have received a copy of the GNU General Public License -

15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ -

16 -

17 /* Written by Giuseppe Scrivano. */ -

18 -

19 #include <config.h> -

20 #include <getopt.h> -

21 #include <stdio.h> -

22 #include <sys/types.h> -

23 -

24 #include "system.h" -

25 #include "error.h" -

26 #include "nproc.h" -

27 #include "quote.h" -

28 #include "xdectoint.h" -

29 -

30 /* The official name of this program (e.g., no 'g' prefix). */ -

31 #define PROGRAM_NAME "nproc" -

32 -

33 #define AUTHORS proper_name ("Giuseppe Scrivano") -

34 -

35 enum -

36 { -

37 ALL_OPTION = CHAR_MAX + 1, -

38 IGNORE_OPTION -

39 }; -

40 -

41 static struct option const longopts[] = -

42 { -

43 {"all", no_argument, NULL, ALL_OPTION}, -

44 {"ignore", required_argument, NULL, IGNORE_OPTION}, -

45 {GETOPT_HELP_OPTION_DECL}, -

46 {GETOPT_VERSION_OPTION_DECL}, -

47 {NULL, 0, NULL, 0} -

48 }; -

49 -

50 void -

51 usage (int status) -

52 { -

if (status != EXIT_SUCCESS)

status != 0	Description
TRUE	evaluated 3 times by 1 test Evaluated by: nproc
FALSE	evaluated 4 times by 1 test Evaluated by: nproc

3-4

emit_try_help ();

executed 3 times by 1 test: end of block

Executed by:

nproc

55 else -

56 { -

57 printf (_("Usage: %s [OPTION]...\n"), program_name); -

58 fputs (_("\ -

59 Print the number of processing units available to the current process,\n\ -

60 which may be less than the number of online processors\n\ -

61 \n\ -

62 "), stdout); -

63 fputs (_("\ -

64 --all print the number of installed processors\n\ -

65 --ignore=N if possible, exclude N processing units\n\ -

66 "), stdout); -

67 -

68 fputs (HELP_OPTION_DESCRIPTION, stdout); -

69 fputs (VERSION_OPTION_DESCRIPTION, stdout); -

70 emit_ancillary_info (PROGRAM_NAME); -

}

executed 4 times by 1 test: end of block

Executed by:

nproc

exit (status);

executed 7 times by 1 test: exit (status);

Executed by:

nproc

73 } -

74 -

75 int -

76 main (int argc, char **argv) -

77 { -

78 unsigned long nproc, ignore = 0; -

79 initialize_main (&argc, &argv); -

80 set_program_name (argv[0]); -

81 setlocale (LC_ALL, ""); -

82 bindtextdomain (PACKAGE, LOCALEDIR); -

83 textdomain (PACKAGE); -

84 -

85 atexit (close_stdout); -

86 -

87 enum nproc_query mode = NPROC_CURRENT_OVERRIDABLE; -

88 -

89 while (1) -

90 { -

91 int c = getopt_long (argc, argv, "", longopts, NULL); -

if (c == -1)

c == -1	Description
TRUE	evaluated 30 times by 1 test Evaluated by: nproc
FALSE	evaluated 23 times by 1 test Evaluated by: nproc

23-30

break;

executed 30 times by 1 test: break;

Executed by:

nproc

94 switch (c) -

95 { -

case_GETOPT_HELP_CHAR;

never executed: break;

executed 4 times by 1 test: case GETOPT_HELP_CHAR:

Executed by:

nproc

0-4

97 -

case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);

executed 6 times by 1 test: exit ( 0 );

Executed by:

nproc

never executed: break;

executed 6 times by 1 test: case GETOPT_VERSION_CHAR:

Executed by:

nproc

0-6

99 -

100

case ALL_OPTION:

executed 3 times by 1 test: case ALL_OPTION:

Executed by:

nproc

101 mode = NPROC_ALL; -

102

break;

executed 3 times by 1 test: break;

Executed by:

nproc

103 -

104

case IGNORE_OPTION:

executed 7 times by 1 test: case IGNORE_OPTION:

Executed by:

nproc

105 ignore = xdectoumax (optarg, 0, ULONG_MAX, "", _("invalid number"),0); -

106

break;

executed 4 times by 1 test: break;

Executed by:

nproc

107 -

108

default:

executed 3 times by 1 test: default:

Executed by:

nproc

109 usage (EXIT_FAILURE); -

110

}

never executed: end of block

111 } -

112 -

113

if (argc != optind)

argc != optind	Description
TRUE	never evaluated
FALSE	evaluated 30 times by 1 test Evaluated by: nproc

0-30

114 { -

115 error (0, 0, _("extra operand %s"), quote (argv[optind])); -

116 usage (EXIT_FAILURE); -

117

}

never executed: end of block

118 -

119 nproc = num_processors (mode); -

120 -

121

if (ignore < nproc)

ignore < nproc	Description
TRUE	evaluated 29 times by 1 test Evaluated by: nproc
FALSE	evaluated 1 time by 1 test Evaluated by: nproc

1-29

122

nproc -= ignore;

executed 29 times by 1 test: nproc -= ignore;

Executed by:

nproc

123 else -

124

nproc = 1;

executed 1 time by 1 test: nproc = 1;

Executed by:

nproc

125 -

126 printf ("%lu\n", nproc); -

127 -

128

return EXIT_SUCCESS;

executed 30 times by 1 test: return 0 ;

Executed by:

nproc

129 } -

Source code

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