Enrico Fraccaroli
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/// MentOS, The Mentoring Operating system project
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/// @file t_periodic1.c
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/// @brief
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/// @copyright (c) 2014-2021 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#include <stdio.h>
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#include <sched.h>
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#include <sys/unistd.h>
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#include <strerror.h>
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int main(int argc, char *argv[])
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{
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pid_t cpid = getpid();
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sched_param_t param;
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// Get current parameters.
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sched_getparam(cpid, ¶m);
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// Change parameters.
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param.period = 5000;
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param.deadline = 5000;
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param.is_periodic = true;
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// Set modified parameters.
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sched_setparam(cpid, ¶m);
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int counter = 0;
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if (fork() == 0) {
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char *_argv[] = { "/bin/periodic2", NULL };
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execv(_argv[0], _argv);
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printf("This is bad, I should not be here! EXEC NOT WORKING\n");
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}
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if (fork() == 0) {
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char *_argv[] = { "/bin/periodic3", NULL };
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execv(_argv[0], _argv);
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printf("This is bad, I should not be here! EXEC NOT WORKING\n");
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}
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while (1) {
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if (++counter == 10) {
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counter = 0;
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}
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printf("[periodic1]counter %d\n",counter);
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if (waitperiod() == -1) {
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printf("[%s] Error in waitperiod: %s\n", argv[0], strerror(errno));
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break;
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}
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}
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return 0;
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}
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