diff options
Diffstat (limited to 'man3/pthread_setschedparam.3')
| -rw-r--r-- | man3/pthread_setschedparam.3 | 82 |
1 files changed, 41 insertions, 41 deletions
diff --git a/man3/pthread_setschedparam.3 b/man3/pthread_setschedparam.3 index 4de5d4cd7..7b34fdb84 100644 --- a/man3/pthread_setschedparam.3 +++ b/man3/pthread_setschedparam.3 @@ -178,11 +178,11 @@ Password: # \fB./a.out \-mf10 \-ar20 \-i e\fP Scheduler settings of main thread policy=SCHED_FIFO, priority=10 - +\& Scheduler settings in \[aq]attr\[aq] policy=SCHED_RR, priority=20 inheritsched is EXPLICIT - +\& Scheduler attributes of new thread policy=SCHED_RR, priority=20 .EE @@ -203,11 +203,11 @@ and instead take their scheduling attributes from the creating thread. # \fB./a.out \-mf10 \-ar20 \-i i\fP Scheduler settings of main thread policy=SCHED_FIFO, priority=10 - +\& Scheduler settings in \[aq]attr\[aq] policy=SCHED_RR, priority=20 inheritsched is INHERIT - +\& Scheduler attributes of new thread policy=SCHED_FIFO, priority=10 .EE @@ -227,22 +227,22 @@ is the default for the inherit scheduler attribute. .\" SRC BEGIN (pthreads_sched_test.c) .EX /* pthreads_sched_test.c */ - +\& #include <errno.h> #include <pthread.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> - +\& #define handle_error_en(en, msg) \e do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0) - +\& static void usage(char *prog_name, char *msg) { if (msg != NULL) fputs(msg, stderr); - +\& fprintf(stderr, "Usage: %s [options]\en", prog_name); fprintf(stderr, "Options are:\en"); #define fpe(msg) fprintf(stderr, "\et%s", msg) /* Shorter */ @@ -259,7 +259,7 @@ usage(char *prog_name, char *msg) fpe(" main thread before pthread_create() call\en"); exit(EXIT_FAILURE); } - +\& static int get_policy(char p, int *policy) { @@ -270,7 +270,7 @@ get_policy(char p, int *policy) default: return 0; } } - +\& static void display_sched_attr(int policy, struct sched_param *param) { @@ -281,29 +281,29 @@ display_sched_attr(int policy, struct sched_param *param) "???", param\->sched_priority); } - +\& static void display_thread_sched_attr(char *msg) { int policy, s; struct sched_param param; - +\& s = pthread_getschedparam(pthread_self(), &policy, ¶m); if (s != 0) handle_error_en(s, "pthread_getschedparam"); - +\& printf("%s\en", msg); display_sched_attr(policy, ¶m); } - +\& static void * thread_start(void *arg) { display_thread_sched_attr("Scheduler attributes of new thread"); - +\& return NULL; } - +\& int main(int argc, char *argv[]) { @@ -313,14 +313,14 @@ main(int argc, char *argv[]) pthread_attr_t *attrp; char *attr_sched_str, *main_sched_str, *inheritsched_str; struct sched_param param; - +\& /* Process command\-line options. */ - +\& use_null_attrib = 0; attr_sched_str = NULL; main_sched_str = NULL; inheritsched_str = NULL; - +\& while ((opt = getopt(argc, argv, "a:Ai:m:")) != \-1) { switch (opt) { case \[aq]a\[aq]: attr_sched_str = optarg; break; @@ -330,40 +330,40 @@ main(int argc, char *argv[]) default: usage(argv[0], "Unrecognized option\en"); } } - +\& if (use_null_attrib && (inheritsched_str != NULL || attr_sched_str != NULL)) { usage(argv[0], "Can\[aq]t specify \-A with \-i or \-a\en"); } - +\& /* Optionally set scheduling attributes of main thread, and display the attributes. */ - +\& if (main_sched_str != NULL) { if (!get_policy(main_sched_str[0], &policy)) usage(argv[0], "Bad policy for main thread (\-m)\en"); param.sched_priority = strtol(&main_sched_str[1], NULL, 0); - +\& s = pthread_setschedparam(pthread_self(), policy, ¶m); if (s != 0) handle_error_en(s, "pthread_setschedparam"); } - +\& display_thread_sched_attr("Scheduler settings of main thread"); printf("\en"); - +\& /* Initialize thread attributes object according to options. */ - +\& attrp = NULL; - +\& if (!use_null_attrib) { s = pthread_attr_init(&attr); if (s != 0) handle_error_en(s, "pthread_attr_init"); attrp = &attr; } - +\& if (inheritsched_str != NULL) { if (inheritsched_str[0] == \[aq]e\[aq]) inheritsched = PTHREAD_EXPLICIT_SCHED; @@ -371,17 +371,17 @@ main(int argc, char *argv[]) inheritsched = PTHREAD_INHERIT_SCHED; else usage(argv[0], "Value for \-i must be \[aq]e\[aq] or \[aq]i\[aq]\en"); - +\& s = pthread_attr_setinheritsched(&attr, inheritsched); if (s != 0) handle_error_en(s, "pthread_attr_setinheritsched"); } - +\& if (attr_sched_str != NULL) { if (!get_policy(attr_sched_str[0], &policy)) usage(argv[0], "Bad policy for \[aq]attr\[aq] (\-a)\en"); param.sched_priority = strtol(&attr_sched_str[1], NULL, 0); - +\& s = pthread_attr_setschedpolicy(&attr, policy); if (s != 0) handle_error_en(s, "pthread_attr_setschedpolicy"); @@ -389,10 +389,10 @@ main(int argc, char *argv[]) if (s != 0) handle_error_en(s, "pthread_attr_setschedparam"); } - +\& /* If we initialized a thread attributes object, display the scheduling attributes that were set in the object. */ - +\& if (attrp != NULL) { s = pthread_attr_getschedparam(&attr, ¶m); if (s != 0) @@ -400,10 +400,10 @@ main(int argc, char *argv[]) s = pthread_attr_getschedpolicy(&attr, &policy); if (s != 0) handle_error_en(s, "pthread_attr_getschedpolicy"); - +\& printf("Scheduler settings in \[aq]attr\[aq]\en"); display_sched_attr(policy, ¶m); - +\& pthread_attr_getinheritsched(&attr, &inheritsched); printf(" inheritsched is %s\en", (inheritsched == PTHREAD_INHERIT_SCHED) ? "INHERIT" : @@ -411,25 +411,25 @@ main(int argc, char *argv[]) "???"); printf("\en"); } - +\& /* Create a thread that will display its scheduling attributes. */ - +\& s = pthread_create(&thread, attrp, &thread_start, NULL); if (s != 0) handle_error_en(s, "pthread_create"); - +\& /* Destroy unneeded thread attributes object. */ - +\& if (!use_null_attrib) { s = pthread_attr_destroy(&attr); if (s != 0) handle_error_en(s, "pthread_attr_destroy"); } - +\& s = pthread_join(thread, NULL); if (s != 0) handle_error_en(s, "pthread_join"); - +\& exit(EXIT_SUCCESS); } .EE |