57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <cutils/iosched_policy.h>
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static char *classes[] = {"none", "rt", "be", "idle", NULL};
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int ionice_main(int argc, char *argv[])
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{
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IoSchedClass clazz = IoSchedClass_NONE;
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int ioprio = 0;
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int pid;
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if(argc != 2 && argc != 4) {
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fprintf(stderr, "usage: ionice <pid> [none|rt|be|idle] [prio]\n");
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return 1;
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}
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if (!(pid = atoi(argv[1]))) {
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fprintf(stderr, "Invalid pid specified\n");
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return 1;
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}
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if (argc == 2) {
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if (android_get_ioprio(pid, &clazz, &ioprio)) {
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fprintf(stderr, "Failed to read priority (%s)\n", strerror(errno));
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return 1;
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}
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fprintf(stdout, "Pid %d, class %s (%d), prio %d\n", pid, classes[clazz], clazz, ioprio);
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return 0;
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}
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if (!strcmp(argv[2], "none")) {
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clazz = IoSchedClass_NONE;
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} else if (!strcmp(argv[2], "rt")) {
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clazz = IoSchedClass_RT;
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} else if (!strcmp(argv[2], "be")) {
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clazz = IoSchedClass_BE;
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} else if (!strcmp(argv[2], "idle")) {
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clazz = IoSchedClass_IDLE;
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} else {
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fprintf(stderr, "Unsupported class '%s'\n", argv[2]);
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return 1;
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}
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ioprio = atoi(argv[3]);
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printf("Setting pid %d i/o class to %d, prio %d\n", pid, clazz, ioprio);
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if (android_set_ioprio(pid, clazz, ioprio)) {
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fprintf(stderr, "Failed to set priority (%s)\n", strerror(errno));
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return 1;
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}
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return 0;
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}
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